InputText: fixed a crash using Home key with WordWrap+ReadOnly. (#9561)

Only the change in STB_TEXTEDIT_MOVELINESTART_IMPL() is required. The others are just for nicer semantic.

.github/ISSUE_TEMPLATE/issue_template.yml

@@ -14,6 +14,7 @@ body:
     attributes:
       value: |
         **Prerequisites:**
+        - I am not using a LLM to think or write for me. Please distill information to what's necessary and meaningful.
         - I have read [Frequently Asked Questions](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md).
         - I have read [Contributing Guidelines -> General Advices](https://github.com/ocornut/imgui/blob/master/docs/CONTRIBUTING.md#getting-started--general-advice).
         - I have read [Contributing Guidelines -> How to open an Issue](https://github.com/ocornut/imgui/blob/master/docs/CONTRIBUTING.md#how-to-open-an-issue).

.github/pull_request_template.md

@@ -1,10 +1,12 @@
 (Click "Preview" to turn any http URL into a clickable link)
 
-1. PLEASE CAREFULLY READ: [Contributing Guidelines](https://github.com/ocornut/imgui/blob/master/docs/CONTRIBUTING.md)
+1. PLEASE CAREFULLY READ: [Contributing Guidelines](https://github.com/ocornut/imgui/blob/master/docs/CONTRIBUTING.md). By submitting a PR you are agreeing with the [CLA](https://github.com/ocornut/imgui/blob/master/docs/CONTRIBUTING.md#copyright--contributor-license-agreement).
 
 2. **Make sure you're using a special branch just for this pull request**. (In git, 1 PR = 1 branch. If you update the branch the PR will be updated.)
 
 3. Consider running the [imgui_test_suite](https://github.com/ocornut/imgui_test_engine) or adding new tests to test for expected behaviors.
 
-4. Clear this template before submitting your PR.
+4. PLEASE DO NOT SUBMIT AI-GENERATED PROSE. ONLY SUBMIT CODE THAT YOU REVIEWED AND UNDERSTAND. Submissions that are lacking proper human review/judgement before being passed to us are not welcome.
+
+5. Clear this template before submitting your PR.
 

.github/workflows/build.yml

@@ -25,8 +25,8 @@ jobs:
         working-directory: ${{ github.workspace }}/imgui
 
     env:
-      VS_PATH: C:\Program Files\Microsoft Visual Studio\2022\Enterprise\
-      MSBUILD_PATH: C:\Program Files\Microsoft Visual Studio\2022\Enterprise\MSBuild\Current\Bin\
+      VS_PATH: C:\Program Files\Microsoft Visual Studio\18\Enterprise
+      MSBUILD_PATH: C:\Program Files\Microsoft Visual Studio\18\Enterprise\MSBuild\Current\Bin\
     steps:
       - uses: actions/checkout@v6
         with:
@@ -116,7 +116,7 @@ jobs:
           cl.exe /D_USRDLL /D_WINDLL /I. example_single_file.cpp /LD /FeImGui.dll /link
           cl.exe /DIMGUI_API=__declspec(dllimport) -DIMGUI_IMPL_API= /I. ImGui.lib /Feexample_null.exe examples/example_null/main.cpp
 
-      # Win64 examples are more frequently compilted than the Win32 examples.
+      # Win64 examples are more frequently compiled than the Win32 examples.
       # More of the Win32 examples requires 'workflow_run' to reduce waste.
       - name: Build Win32 example_glfw_opengl2
         shell: cmd
@@ -160,6 +160,7 @@ jobs:
       - name: Build Win32 example_sdl3_opengl3
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl3_opengl3/example_sdl3_opengl3.vcxproj /p:Platform=Win32 /p:Configuration=Release'
+        if: github.event_name == 'workflow_run'
 
       - name: Build Win32 example_sdl3_sdlgpu3
         shell: cmd
@@ -200,6 +201,7 @@ jobs:
       - name: Build Win64 example_glfw_opengl3
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'workflow_run'
 
       - name: Build Win64 example_glfw_vulkan
         shell: cmd
@@ -228,6 +230,7 @@ jobs:
       - name: Build Win64 example_sdl2_directx11
         shell: cmd
         run: '"%MSBUILD_PATH%\MSBuild.exe" examples/example_sdl2_directx11/example_sdl2_directx11.vcxproj /p:Platform=x64 /p:Configuration=Release'
+        if: github.event_name == 'workflow_run'
 
       - name: Build Win64 example_sdl3_opengl3
         shell: cmd
@@ -506,7 +509,7 @@ jobs:
       run: g++ -c -I. -std=c++11 -DIMGUI_IMPL_VULKAN_NO_PROTOTYPES=1 backends/imgui_impl_vulkan.cpp
 
   Build-MacOS:
-    runs-on: macos-latest
+    runs-on: macos-26
     name: Build - MacOS
 
     defaults:
@@ -572,6 +575,9 @@ jobs:
     - name: Build macOS example_sdl2_metal
       run: make -C examples/example_sdl2_metal
 
+    - name: Build macOS example_sdl3_metal4
+      run: make -C examples/example_sdl3_metal4
+
     - name: Build macOS example_sdl2_opengl2
       run: make -C examples/example_sdl2_opengl2
       if: github.event_name == 'workflow_run'
@@ -587,10 +593,18 @@ jobs:
       run: xcodebuild -project examples/example_apple_metal/example_apple_metal.xcodeproj -target example_apple_metal_macos
       if: github.event_name == 'workflow_run'
 
+    - name: Build macOS example_apple_metal4
+      run: xcodebuild -project examples/example_apple_metal4/example_apple_metal4.xcodeproj -target example_apple_metal_macos
+      if: github.event_name == 'workflow_run'
+
     - name: Build macOS example_apple_opengl2
       run: xcodebuild -project examples/example_apple_opengl2/example_apple_opengl2.xcodeproj -target example_osx_opengl2
       if: github.event_name == 'workflow_run'
 
+    - name: Build macOS example_apple_opengl3
+      run: xcodebuild -project examples/example_apple_opengl3/example_apple_opengl3.xcodeproj -target example_osx_opengl3
+      if: github.event_name == 'workflow_run'
+
   Build-iOS:
     runs-on: macos-14
     name: Build - iOS
@@ -651,8 +665,12 @@ jobs:
     name: Build - Android
 
     steps:
-    - uses: actions/checkout@v6
+    - name: Setup Gradle 9.4.1
+      uses: gradle/actions/setup-gradle@v6
+      with:
+        gradle-version: '9.4.1'
 
+    - uses: actions/checkout@v6
     - name: Build example_android_opengl3
       run: |
         cd examples/example_android_opengl3/android
@@ -667,7 +685,7 @@ jobs:
         working-directory: ${{ github.workspace }}/imgui
 
     env:
-      MSBUILD_PATH: C:\Program Files\Microsoft Visual Studio\2022\Enterprise\MSBuild\Current\Bin\
+      MSBUILD_PATH: C:\Program Files\Microsoft Visual Studio\18\Enterprise\MSBuild\Current\Bin\
 
     steps:
       - uses: actions/checkout@v6

.github/workflows/static-analysis.yml

@@ -23,9 +23,9 @@ jobs:
         run: |
           if [[ "$PVS_STUDIO_LICENSE" != "" ]];
           then
-            wget -q https://files.viva64.com/etc/pubkey.txt
+            wget -q https://files.pvs-studio.com/etc/pubkey.txt
             sudo apt-key add pubkey.txt
-            sudo wget -O /etc/apt/sources.list.d/viva64.list https://files.viva64.com/etc/viva64.list
+            sudo wget -O /etc/apt/sources.list.d/viva64.list https://files.pvs-studio.com/etc/viva64.list
             sudo apt-get update
             sudo apt-get install -y pvs-studio
             pvs-studio-analyzer credentials -o pvs-studio.lic $PVS_STUDIO_LICENSE

.gitignore

@@ -1,5 +1,7 @@
-## OSX artifacts
+## Misc artifacts
 .DS_Store
+.claude
+.vscode
 
 ## Dear ImGui artifacts
 imgui.ini
@@ -7,6 +9,8 @@ imgui*.ini
 
 ## General build artifacts
 *.o
+*.so*
+*.a
 *.obj
 *.exe
 examples/*/Debug/*
@@ -55,12 +59,15 @@ examples/example_sdl3_wgpu/web/*
 .idea
 cmake-build-*
 
-## VS code artifacts
-.vscode
+## QNX artifacts
+*.pinfo
+*.dep
+*.gcno
 
 ## Unix executables from our example Makefiles
 examples/example_apple_metal/example_apple_metal
 examples/example_apple_opengl2/example_apple_opengl2
+examples/example_apple_opengl3/example_apple_opengl3
 examples/example_glfw_metal/example_glfw_metal
 examples/example_glfw_opengl2/example_glfw_opengl2
 examples/example_glfw_opengl3/example_glfw_opengl3
@@ -73,6 +80,7 @@ examples/example_sdl2_opengl3/example_sdl2_opengl3
 examples/example_sdl2_sdlrenderer2/example_sdl2_sdlrenderer2
 examples/example_sdl2_vulkan/example_sdl2_vulkan
 examples/example_sdl3_metal/example_sdl3_metal
+examples/example_sdl3_metal4/example_sdl3_metal4
 examples/example_sdl3_opengl3/example_sdl3_opengl3
 examples/example_sdl3_sdlgpu3/example_sdl3_sdlgpu3
 examples/example_sdl3_sdlrenderer3/example_sdl3_sdlrenderer3

backends/imgui_impl_allegro5.cpp

@@ -9,6 +9,7 @@
 //  [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 // Missing features or Issues:
 //  [ ] Renderer: The renderer is suboptimal as we need to unindex our buffers and convert vertices manually.
+//  [ ] Renderer: Missing support for DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest callbacks: Allegro5 cannot enable/disable LINEAR bitmap flags after creation.
 //  [ ] Platform: Missing gamepad support.
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
@@ -21,6 +22,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState (others cannot be supported by Allegro5). (#9378)
 //  2025-09-18: Call platform_io.ClearRendererHandlers() and platform_io.ClearPlatformHandlers() on shutdown.
 //  2025-08-12: Inputs: fixed missing support for ImGuiKey_PrintScreen under Windows, as raw Allegro 5 does not receive it.
 //  2025-08-12: Added ImGui_ImplAllegro5_SetDisplay() function to change current ALLEGRO_DISPLAY, as Allegro applications often need to do that.
@@ -136,7 +138,10 @@ static void ImGui_ImplAllegro5_SetupRenderState(ImDrawData* draw_data)
     }
 }
 
-// Render function.
+// Draw callbacks
+static void ImGui_ImplAllegro5_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*) {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+
+// Render function
 void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
 {
     // Avoid rendering when minimized
@@ -152,6 +157,7 @@ void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
 
     // Backup Allegro state that will be modified
     ImGui_ImplAllegro5_Data* bd = ImGui_ImplAllegro5_GetBackendData();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     ALLEGRO_TRANSFORM last_transform = *al_get_current_transform();
     ALLEGRO_TRANSFORM last_projection_transform = *al_get_current_projection_transform();
     int last_clip_x, last_clip_y, last_clip_w, last_clip_h;
@@ -208,8 +214,7 @@ void ImGui_ImplAllegro5_RenderDrawData(ImDrawData* draw_data)
             if (pcmd->UserCallback)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplAllegro5_DrawCallback_ResetRenderState)
                     ImGui_ImplAllegro5_SetupRenderState(draw_data);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -263,8 +268,7 @@ void ImGui_ImplAllegro5_UpdateTexture(ImTextureData* tex)
         IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
         IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
 
-        // Create texture
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Create texture (bilinear sampling is required)
         const int new_bitmap_flags = al_get_new_bitmap_flags();
         int new_bitmap_format = al_get_new_bitmap_format();
         al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP | ALLEGRO_MIN_LINEAR | ALLEGRO_MAG_LINEAR);
@@ -486,11 +490,12 @@ bool ImGui_ImplAllegro5_Init(ALLEGRO_DISPLAY* display)
 
     ImGui_ImplAllegro5_SetDisplay(display);
 
-#if ALLEGRO_HAS_CLIPBOARD
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+#if ALLEGRO_HAS_CLIPBOARD
     platform_io.Platform_SetClipboardTextFn = ImGui_ImplAllegro5_SetClipboardText;
     platform_io.Platform_GetClipboardTextFn = ImGui_ImplAllegro5_GetClipboardText;
 #endif
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplAllegro5_DrawCallback_ResetRenderState;
 
     return true;
 }

backends/imgui_impl_allegro5.h

@@ -9,6 +9,7 @@
 //  [X] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors). Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'.
 // Missing features or Issues:
 //  [ ] Renderer: The renderer is suboptimal as we need to unindex our buffers and convert vertices manually.
+//  [ ] Renderer: Missing support for DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest callbacks: Allegro5 cannot enable/disable LINEAR bitmap flags after creation.
 //  [ ] Platform: Missing gamepad support.
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.

backends/imgui_impl_android.cpp

@@ -1,5 +1,5 @@
 // dear imgui: Platform Binding for Android native app
-// This needs to be used along with the OpenGL 3 Renderer (imgui_impl_opengl3)
+// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
 
 // Implemented features:
 //  [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy AKEYCODE_* values are obsolete since 1.87 and not supported since 1.91.5]
@@ -23,7 +23,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
-//  2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
+//  2026-07-15: Inputs: clear mouse position on touch release (AMOTION_EVENT_ACTION_UP) to prevent items from staying in hovered state. (#6627, #9474)
+//  2023-04-11: Inputs: calling new io.AddMouseSourceEvent() to discriminate Mouse from Touch events.
+//  2022-09-26: Inputs: renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
 //  2022-01-26: Inputs: replaced short-lived io.AddKeyModsEvent() (added two weeks ago) with io.AddKeyEvent() using ImGuiKey_ModXXX flags. Sorry for the confusion.
 //  2022-01-17: Inputs: calling new io.AddMousePosEvent(), io.AddMouseButtonEvent(), io.AddMouseWheelEvent() API (1.87+).
 //  2022-01-10: Inputs: calling new io.AddKeyEvent(), io.AddKeyModsEvent() + io.SetKeyEventNativeData() API (1.87+). Support for full ImGuiKey range.
@@ -230,6 +232,8 @@ int32_t ImGui_ImplAndroid_HandleInputEvent(const AInputEvent* input_event)
             {
                 io.AddMousePosEvent(AMotionEvent_getX(input_event, event_pointer_index), AMotionEvent_getY(input_event, event_pointer_index));
                 io.AddMouseButtonEvent(0, event_action == AMOTION_EVENT_ACTION_DOWN);
+                if (event_action == AMOTION_EVENT_ACTION_UP) // (#6627, #9474)
+                    io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
             }
             break;
         }

backends/imgui_impl_android.h

@@ -1,5 +1,5 @@
 // dear imgui: Platform Binding for Android native app
-// This needs to be used along with the OpenGL 3 Renderer (imgui_impl_opengl3)
+// This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..)
 
 // Implemented features:
 //  [X] Platform: Keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy AKEYCODE_* values are obsolete since 1.87 and not supported since 1.91.5]

backends/imgui_impl_dx10.cpp

@@ -5,6 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplDX10_GetRenderState().
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -16,7 +17,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
-//  2026-01-19: DirectX11: Added 'SamplerNearest' in ImGui_ImplDX11_RenderState. Renamed 'SamplerDefault' to 'SamplerLinear'. 
+//  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-04-23: DirectX10: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. Obsoleting samplers from ImGui_ImplDX10_RenderState. (#9378)
+//  2026-01-19: DirectX10: Added 'SamplerNearest' in ImGui_ImplDX10_RenderState. Renamed 'SamplerDefault' to 'SamplerLinear'. 
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-06-11: DirectX10: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas.
 //  2025-05-07: DirectX10: Honor draw_data->FramebufferScale to allow for custom backends and experiment using it (consistently with other renderer backends, even though in normal condition it is not set under Windows).
@@ -98,6 +101,11 @@ static ImGui_ImplDX10_Data* ImGui_ImplDX10_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplDX10_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplDX10_RenderState* ImGui_ImplDX10_GetRenderState()
+{
+    return (ImGui_ImplDX10_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
 // Functions
 static void ImGui_ImplDX10_SetupRenderState(ImDrawData* draw_data, ID3D10Device* device)
 {
@@ -105,8 +113,8 @@ static void ImGui_ImplDX10_SetupRenderState(ImDrawData* draw_data, ID3D10Device*
 
     // Setup viewport
     D3D10_VIEWPORT vp = {};
-    vp.Width = (UINT)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    vp.Height = (UINT)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    vp.Width = (UINT)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    vp.Height = (UINT)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     vp.MinDepth = 0.0f;
     vp.MaxDepth = 1.0f;
     vp.TopLeftX = vp.TopLeftY = 0;
@@ -147,12 +155,17 @@ static void ImGui_ImplDX10_SetupRenderState(ImDrawData* draw_data, ID3D10Device*
     device->GSSetShader(nullptr);
 
     // Setup render state
-    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    const float blend_factor[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
     device->OMSetBlendState(bd->pBlendState, blend_factor, 0xffffffff);
     device->OMSetDepthStencilState(bd->pDepthStencilState, 0);
     device->RSSetState(bd->pRasterizerState);
 }
 
+// Draw callbacks
+static void ImGui_ImplDX10_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)       {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplDX10_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)       { ImGui_ImplDX10_Data* bd = ImGui_ImplDX10_GetBackendData(); bd->pd3dDevice->PSSetSamplers(0, 1, &bd->pTexSamplerLinear); }
+static void ImGui_ImplDX10_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)      { ImGui_ImplDX10_Data* bd = ImGui_ImplDX10_GetBackendData(); bd->pd3dDevice->PSSetSamplers(0, 1, &bd->pTexSamplerNearest); }
+
 // Render function
 void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
 {
@@ -177,7 +190,7 @@ void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
         bd->VertexBufferSize = draw_data->TotalVtxCount + 5000;
         D3D10_BUFFER_DESC desc = {};
         desc.Usage = D3D10_USAGE_DYNAMIC;
-        desc.ByteWidth = bd->VertexBufferSize * sizeof(ImDrawVert);
+        desc.ByteWidth = (UINT)bd->VertexBufferSize * sizeof(ImDrawVert);
         desc.BindFlags = D3D10_BIND_VERTEX_BUFFER;
         desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
         desc.MiscFlags = 0;
@@ -191,7 +204,7 @@ void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
         bd->IndexBufferSize = draw_data->TotalIdxCount + 10000;
         D3D10_BUFFER_DESC desc = {};
         desc.Usage = D3D10_USAGE_DYNAMIC;
-        desc.ByteWidth = bd->IndexBufferSize * sizeof(ImDrawIdx);
+        desc.ByteWidth = (UINT)bd->IndexBufferSize * sizeof(ImDrawIdx);
         desc.BindFlags = D3D10_BIND_INDEX_BUFFER;
         desc.CPUAccessFlags = D3D10_CPU_ACCESS_WRITE;
         if (device->CreateBuffer(&desc, nullptr, &bd->pIB) < 0)
@@ -260,8 +273,6 @@ void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     ImGui_ImplDX10_RenderState render_state;
     render_state.Device = bd->pd3dDevice;
-    render_state.SamplerLinear = bd->pTexSamplerLinear;
-    render_state.SamplerNearest = bd->pTexSamplerNearest;
     render_state.VertexConstantBuffer = bd->pVertexConstantBuffer;
     platform_io.Renderer_RenderState = &render_state;
 
@@ -279,8 +290,7 @@ void ImGui_ImplDX10_RenderDrawData(ImDrawData* draw_data)
             if (pcmd->UserCallback != nullptr)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplDX10_DrawCallback_ResetRenderState)
                     ImGui_ImplDX10_SetupRenderState(draw_data, device);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -443,7 +453,7 @@ bool    ImGui_ImplDX10_CreateDeviceObjects()
             PS_INPUT main(VS_INPUT input)\
             {\
               PS_INPUT output;\
-              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.0f, 1.0f));\
               output.col = input.col;\
               output.uv  = input.uv;\
               return output;\
@@ -554,8 +564,7 @@ bool    ImGui_ImplDX10_CreateDeviceObjects()
         bd->pd3dDevice->CreateDepthStencilState(&desc, &bd->pDepthStencilState);
     }
 
-    // Create texture sampler
-    // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+    // Create texture sampler (bilinear sampling is required)
     {
         D3D10_SAMPLER_DESC desc;
         ZeroMemory(&desc, sizeof(desc));
@@ -563,10 +572,10 @@ bool    ImGui_ImplDX10_CreateDeviceObjects()
         desc.AddressU = D3D10_TEXTURE_ADDRESS_CLAMP;
         desc.AddressV = D3D10_TEXTURE_ADDRESS_CLAMP;
         desc.AddressW = D3D10_TEXTURE_ADDRESS_CLAMP;
-        desc.MipLODBias = 0.f;
+        desc.MipLODBias = 0.0f;
         desc.ComparisonFunc = D3D10_COMPARISON_ALWAYS;
-        desc.MinLOD = 0.f;
-        desc.MaxLOD = 0.f;
+        desc.MinLOD = 0.0f;
+        desc.MaxLOD = 0.0f;
         bd->pd3dDevice->CreateSamplerState(&desc, &bd->pTexSamplerLinear);
         desc.Filter = D3D10_FILTER_MIN_MAG_MIP_POINT;
         bd->pd3dDevice->CreateSamplerState(&desc, &bd->pTexSamplerNearest);
@@ -613,6 +622,9 @@ bool    ImGui_ImplDX10_Init(ID3D10Device* device)
 
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = D3D10_REQ_TEXTURE2D_U_OR_V_DIMENSION;
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplDX10_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplDX10_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplDX10_DrawCallback_SetSamplerNearest;
 
     // Get factory from device
     IDXGIDevice* pDXGIDevice = nullptr;

backends/imgui_impl_dx10.h

@@ -5,6 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'ID3D10ShaderResourceView*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplDX10_GetRenderState().
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -41,9 +42,10 @@ IMGUI_IMPL_API void     ImGui_ImplDX10_UpdateTexture(ImTextureData* tex);
 struct ImGui_ImplDX10_RenderState
 {
     ID3D10Device*           Device;
-    ID3D10SamplerState*     SamplerLinear;
-    ID3D10SamplerState*     SamplerNearest;
     ID3D10Buffer*           VertexConstantBuffer;
+    //ID3D10SamplerState*   SamplerLinear;          // Use ImDrawList::AddCallback(ImGui::GetPlatform().DrawCallback_SetSamplerLinear)
+    //ID3D10SamplerState*   SamplerNearest;         // Use ImDrawList::AddCallback(ImGui::GetPlatform().DrawCallback_SetSamplerNearest)
 };
+IMGUI_IMPL_API ImGui_ImplDX10_RenderState* ImGui_ImplDX10_GetRenderState();
 
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_dx11.cpp

@@ -5,7 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplDX11_GetRenderState().
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -17,6 +17,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-04-23: DirectX11: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. Obsoleting samplers from ImGui_ImplDX11_RenderState. (#9378)
 //  2026-01-19: DirectX11: Added 'SamplerNearest' in ImGui_ImplDX11_RenderState. Renamed 'SamplerDefault' to 'SamplerLinear'.
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-06-11: DirectX11: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas.
@@ -85,6 +86,7 @@ struct ImGui_ImplDX11_Data
     ID3D11DepthStencilState*    pDepthStencilState;
     int                         VertexBufferSize;
     int                         IndexBufferSize;
+    ImGui_ImplDX11_RenderState* RenderState;            // == (ImGui_ImplDX11_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState during rendering.
 
     ImGui_ImplDX11_Data()       { memset((void*)this, 0, sizeof(*this)); VertexBufferSize = 5000; IndexBufferSize = 10000; }
 };
@@ -101,6 +103,11 @@ static ImGui_ImplDX11_Data* ImGui_ImplDX11_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplDX11_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplDX11_RenderState* ImGui_ImplDX11_GetRenderState()
+{
+    return (ImGui_ImplDX11_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
 // Functions
 static void ImGui_ImplDX11_SetupRenderState(const ImDrawData* draw_data, ID3D11DeviceContext* device_ctx)
 {
@@ -108,8 +115,8 @@ static void ImGui_ImplDX11_SetupRenderState(const ImDrawData* draw_data, ID3D11D
 
     // Setup viewport
     D3D11_VIEWPORT vp = {};
-    vp.Width = draw_data->DisplaySize.x * draw_data->FramebufferScale.x;
-    vp.Height = draw_data->DisplaySize.y * draw_data->FramebufferScale.y;
+    vp.Width = (float)(int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    vp.Height = (float)(int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     vp.MinDepth = 0.0f;
     vp.MaxDepth = 1.0f;
     vp.TopLeftX = vp.TopLeftY = 0;
@@ -153,12 +160,17 @@ static void ImGui_ImplDX11_SetupRenderState(const ImDrawData* draw_data, ID3D11D
     device_ctx->CSSetShader(nullptr, nullptr, 0); // In theory we should backup and restore this as well.. very infrequently used..
 
     // Setup render state
-    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    const float blend_factor[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
     device_ctx->OMSetBlendState(bd->pBlendState, blend_factor, 0xffffffff);
     device_ctx->OMSetDepthStencilState(bd->pDepthStencilState, 0);
     device_ctx->RSSetState(bd->pRasterizerState);
 }
 
+// Draw callbacks
+static void ImGui_ImplDX11_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)       {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplDX11_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)       { ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData(); bd->RenderState->DeviceContext->PSSetSamplers(0, 1, &bd->pTexSamplerLinear); }
+static void ImGui_ImplDX11_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)      { ImGui_ImplDX11_Data* bd = ImGui_ImplDX11_GetBackendData(); bd->RenderState->DeviceContext->PSSetSamplers(0, 1, &bd->pTexSamplerNearest); }
+
 // Render function
 void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
 {
@@ -183,7 +195,7 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
         bd->VertexBufferSize = draw_data->TotalVtxCount + 5000;
         D3D11_BUFFER_DESC desc = {};
         desc.Usage = D3D11_USAGE_DYNAMIC;
-        desc.ByteWidth = bd->VertexBufferSize * sizeof(ImDrawVert);
+        desc.ByteWidth = (UINT)bd->VertexBufferSize * sizeof(ImDrawVert);
         desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
         desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
         desc.MiscFlags = 0;
@@ -196,7 +208,7 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
         bd->IndexBufferSize = draw_data->TotalIdxCount + 10000;
         D3D11_BUFFER_DESC desc = {};
         desc.Usage = D3D11_USAGE_DYNAMIC;
-        desc.ByteWidth = bd->IndexBufferSize * sizeof(ImDrawIdx);
+        desc.ByteWidth = (UINT)bd->IndexBufferSize * sizeof(ImDrawIdx);
         desc.BindFlags = D3D11_BIND_INDEX_BUFFER;
         desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
         if (bd->pd3dDevice->CreateBuffer(&desc, nullptr, &bd->pIB) < 0)
@@ -274,10 +286,8 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
     ImGui_ImplDX11_RenderState render_state;
     render_state.Device = bd->pd3dDevice;
     render_state.DeviceContext = bd->pd3dDeviceContext;
-    render_state.SamplerLinear = bd->pTexSamplerLinear;
-    render_state.SamplerNearest = bd->pTexSamplerNearest;
     render_state.VertexConstantBuffer = bd->pVertexConstantBuffer;
-    platform_io.Renderer_RenderState = &render_state;
+    platform_io.Renderer_RenderState = bd->RenderState = &render_state;
 
     // Render command lists
     // (Because we merged all buffers into a single one, we maintain our own offset into them)
@@ -293,8 +303,7 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
             if (pcmd->UserCallback != nullptr)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplDX11_DrawCallback_ResetRenderState)
                     ImGui_ImplDX11_SetupRenderState(draw_data, device);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -320,7 +329,7 @@ void ImGui_ImplDX11_RenderDrawData(ImDrawData* draw_data)
         global_idx_offset += draw_list->IdxBuffer.Size;
         global_vtx_offset += draw_list->VtxBuffer.Size;
     }
-    platform_io.Renderer_RenderState = nullptr;
+    platform_io.Renderer_RenderState = bd->RenderState = nullptr;
 
     // Restore modified DX state
     device->RSSetScissorRects(old.ScissorRectsCount, old.ScissorRects);
@@ -458,7 +467,7 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
             PS_INPUT main(VS_INPUT input)\
             {\
               PS_INPUT output;\
-              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.0f, 1.0f));\
               output.col = input.col;\
               output.uv  = input.uv;\
               return output;\
@@ -570,7 +579,6 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
     }
 
     // Create texture sampler
-    // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
     {
         D3D11_SAMPLER_DESC desc;
         ZeroMemory(&desc, sizeof(desc));
@@ -578,10 +586,10 @@ bool    ImGui_ImplDX11_CreateDeviceObjects()
         desc.AddressU = D3D11_TEXTURE_ADDRESS_CLAMP;
         desc.AddressV = D3D11_TEXTURE_ADDRESS_CLAMP;
         desc.AddressW = D3D11_TEXTURE_ADDRESS_CLAMP;
-        desc.MipLODBias = 0.f;
+        desc.MipLODBias = 0.0f;
         desc.ComparisonFunc = D3D11_COMPARISON_ALWAYS;
-        desc.MinLOD = 0.f;
-        desc.MaxLOD = 0.f;
+        desc.MinLOD = 0.0f;
+        desc.MaxLOD = 0.0f;
         bd->pd3dDevice->CreateSamplerState(&desc, &bd->pTexSamplerLinear);
         desc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT;
         bd->pd3dDevice->CreateSamplerState(&desc, &bd->pTexSamplerNearest);
@@ -629,6 +637,9 @@ bool    ImGui_ImplDX11_Init(ID3D11Device* device, ID3D11DeviceContext* device_co
 
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = D3D11_REQ_TEXTURE2D_U_OR_V_DIMENSION;
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplDX11_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplDX11_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplDX11_DrawCallback_SetSamplerNearest;
 
     // Get factory from device
     IDXGIDevice* pDXGIDevice = nullptr;

backends/imgui_impl_dx11.h

@@ -5,7 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'ID3D11ShaderResourceView*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplDX11_GetRenderState().
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -44,9 +44,10 @@ struct ImGui_ImplDX11_RenderState
 {
     ID3D11Device*           Device;
     ID3D11DeviceContext*    DeviceContext;
-    ID3D11SamplerState*     SamplerLinear;
-    ID3D11SamplerState*     SamplerNearest;
     ID3D11Buffer*           VertexConstantBuffer;
+    //ID3D11SamplerState*   SamplerLinear;          // Use ImDrawList::AddCallback(ImGui::GetPlatform().DrawCallback_SetSamplerLinear)
+    //ID3D11SamplerState*   SamplerNearest;         // Use ImDrawList::AddCallback(ImGui::GetPlatform().DrawCallback_SetSamplerNearest)
 };
+IMGUI_IMPL_API ImGui_ImplDX11_RenderState* ImGui_ImplDX11_GetRenderState();
 
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_dx12.cpp

@@ -5,7 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplDX12_GetRenderState().
 
 // The aim of imgui_impl_dx12.h/.cpp is to be usable in your engine without any modification.
 // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
@@ -20,6 +20,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-08-05: DirectX12: *BREAKING CHANGE* Removed support for legacy `ImGui_ImplDX12_Init()` signature obsoleted in 1.91.6 (2024-11-15) because it needed to forcefully disable support for ImGuiBackendFlags_RendererHasTextures. (#9487)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
 //  2025-10-11: DirectX12: Reuse texture upload buffer and grow it only when necessary. (#9002)
 //  2025-09-29: DirectX12: Rework synchronization logic. (#8961)
 //  2025-09-29: DirectX12: Enable swapchain tearing to eliminate viewports framerate throttling. (#8965)
@@ -91,6 +94,8 @@ struct ImGui_ImplDX12_Texture
 struct ImGui_ImplDX12_Data
 {
     ImGui_ImplDX12_InitInfo     InitInfo;
+    ImGui_ImplDX12_RenderState* RenderState;
+        
     IDXGIFactory5*              pdxgiFactory;
     ID3D12Device*               pd3dDevice;
     ID3D12RootSignature*        pRootSignatureLinear;
@@ -128,6 +133,11 @@ static ImGui_ImplDX12_Data* ImGui_ImplDX12_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplDX12_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplDX12_RenderState* ImGui_ImplDX12_GetRenderState()
+{
+    return (ImGui_ImplDX12_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
 // Buffers used during the rendering of a frame
 struct ImGui_ImplDX12_RenderBuffers
 {
@@ -142,19 +152,15 @@ struct VERTEX_CONSTANT_BUFFER_DX12
     float   mvp[4][4];
 };
 
-// FIXME-WIP: Allow user to forward declare those two, for until we come up with a backend agnostic API to do this. (#9173)
-void ImGui_ImplDX12_SetupSamplerLinear(ID3D12GraphicsCommandList* command_list);
-void ImGui_ImplDX12_SetupSamplerNearest(ID3D12GraphicsCommandList* command_list);
-
 // Functions
-void ImGui_ImplDX12_SetupSamplerLinear(ID3D12GraphicsCommandList* command_list)
+static void ImGui_ImplDX12_SetupSamplerLinear(ID3D12GraphicsCommandList* command_list)
 {
     ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
     command_list->SetPipelineState(bd->pPipelineStateLinear);
     command_list->SetGraphicsRootSignature(bd->pRootSignatureLinear);
 }
 
-void ImGui_ImplDX12_SetupSamplerNearest(ID3D12GraphicsCommandList* command_list)
+static void ImGui_ImplDX12_SetupSamplerNearest(ID3D12GraphicsCommandList* command_list)
 {
     ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
     command_list->SetPipelineState(bd->pPipelineStateNearest);
@@ -183,8 +189,8 @@ static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12Graphic
 
     // Setup viewport
     D3D12_VIEWPORT vp = {};
-    vp.Width = draw_data->DisplaySize.x * draw_data->FramebufferScale.x;
-    vp.Height = draw_data->DisplaySize.y * draw_data->FramebufferScale.y;
+    vp.Width = (float)(int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    vp.Height = (float)(int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     vp.MinDepth = 0.0f;
     vp.MaxDepth = 1.0f;
     vp.TopLeftX = vp.TopLeftY = 0.0f;
@@ -200,7 +206,7 @@ static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12Graphic
     command_list->IASetVertexBuffers(0, 1, &vbv);
     D3D12_INDEX_BUFFER_VIEW ibv = {};
     ibv.BufferLocation = fr->IndexBuffer->GetGPUVirtualAddress();
-    ibv.SizeInBytes = fr->IndexBufferSize * sizeof(ImDrawIdx);
+    ibv.SizeInBytes = (UINT)fr->IndexBufferSize * sizeof(ImDrawIdx);
     ibv.Format = sizeof(ImDrawIdx) == 2 ? DXGI_FORMAT_R16_UINT : DXGI_FORMAT_R32_UINT;
     command_list->IASetIndexBuffer(&ibv);
     command_list->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
@@ -208,7 +214,7 @@ static void ImGui_ImplDX12_SetupRenderState(ImDrawData* draw_data, ID3D12Graphic
     command_list->SetGraphicsRoot32BitConstants(0, 16, &vertex_constant_buffer, 0);
 
     // Setup blend factor
-    const float blend_factor[4] = { 0.f, 0.f, 0.f, 0.f };
+    const float blend_factor[4] = { 0.0f, 0.0f, 0.0f, 0.0f };
     command_list->OMSetBlendFactor(blend_factor);
 }
 
@@ -220,6 +226,11 @@ static inline void SafeRelease(T*& res)
     res = nullptr;
 }
 
+// Draw callbacks
+static void ImGui_ImplDX12_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)   {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplDX12_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)   { ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData(); ImGui_ImplDX12_SetupSamplerLinear(bd->RenderState->CommandList); }
+static void ImGui_ImplDX12_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData(); ImGui_ImplDX12_SetupSamplerNearest(bd->RenderState->CommandList); }
+
 // Render function
 void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* command_list)
 {
@@ -317,7 +328,7 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
     ImGui_ImplDX12_RenderState render_state;
     render_state.Device = bd->pd3dDevice;
     render_state.CommandList = command_list;
-    platform_io.Renderer_RenderState = &render_state;
+    platform_io.Renderer_RenderState = bd->RenderState = &render_state;
 
     // Render command lists
     // (Because we merged all buffers into a single one, we maintain our own offset into them)
@@ -334,7 +345,7 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
             {
                 // User callback, registered via ImDrawList::AddCallback()
                 // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplDX12_DrawCallback_ResetRenderState)
                     ImGui_ImplDX12_SetupRenderState(draw_data, command_list, fr);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -361,7 +372,7 @@ void ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandL
         global_idx_offset += draw_list->IdxBuffer.Size;
         global_vtx_offset += draw_list->VtxBuffer.Size;
     }
-    platform_io.Renderer_RenderState = nullptr;
+    platform_io.Renderer_RenderState = bd->RenderState = nullptr;
 }
 
 static void ImGui_ImplDX12_DestroyTexture(ImTextureData* tex)
@@ -604,17 +615,17 @@ bool    ImGui_ImplDX12_CreateDeviceObjects()
         param[1].DescriptorTable.pDescriptorRanges = &descRange;
         param[1].ShaderVisibility = D3D12_SHADER_VISIBILITY_PIXEL;
 
-        // Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
+        // Bilinear sampling is required
         D3D12_STATIC_SAMPLER_DESC staticSampler[1] = {};
         staticSampler[0].Filter = D3D12_FILTER_MIN_MAG_MIP_LINEAR;
         staticSampler[0].AddressU = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
         staticSampler[0].AddressV = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
         staticSampler[0].AddressW = D3D12_TEXTURE_ADDRESS_MODE_CLAMP;
-        staticSampler[0].MipLODBias = 0.f;
+        staticSampler[0].MipLODBias = 0.0f;
         staticSampler[0].MaxAnisotropy = 0;
         staticSampler[0].ComparisonFunc = D3D12_COMPARISON_FUNC_ALWAYS;
         staticSampler[0].BorderColor = D3D12_STATIC_BORDER_COLOR_TRANSPARENT_BLACK;
-        staticSampler[0].MinLOD = 0.f;
+        staticSampler[0].MinLOD = 0.0f;
         staticSampler[0].MaxLOD = D3D12_FLOAT32_MAX;
         staticSampler[0].ShaderRegister = 0;
         staticSampler[0].RegisterSpace = 0;
@@ -664,7 +675,7 @@ bool    ImGui_ImplDX12_CreateDeviceObjects()
         bd->pd3dDevice->CreateRootSignature(0, blob->GetBufferPointer(), blob->GetBufferSize(), IID_PPV_ARGS(&bd->pRootSignatureLinear));
         blob->Release();
 
-        // Root Signature for ImDrawCallback_SetSamplerNearest
+        // Nearest sampler
         staticSampler[0].Filter = D3D12_FILTER_MIN_MAG_MIP_POINT;
         if (D3D12SerializeRootSignatureFn(&desc, D3D_ROOT_SIGNATURE_VERSION_1, &blob, nullptr) != S_OK)
             return false;
@@ -717,7 +728,7 @@ bool    ImGui_ImplDX12_CreateDeviceObjects()
             PS_INPUT main(VS_INPUT input)\
             {\
               PS_INPUT output;\
-              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.f, 1.f));\
+              output.pos = mul( ProjectionMatrix, float4(input.pos.xy, 0.0f, 1.0f));\
               output.col = input.col;\
               output.uv  = input.uv;\
               return output;\
@@ -813,7 +824,6 @@ bool    ImGui_ImplDX12_CreateDeviceObjects()
         return false;
     }
 
-    // Pipeline State for ImDrawCallback_SetSamplerNearest
     psoDesc.pRootSignature = bd->pRootSignatureNearest;
 
     result_pipeline_state = bd->pd3dDevice->CreateGraphicsPipelineState(&psoDesc, IID_PPV_ARGS(&bd->pPipelineStateNearest));
@@ -927,6 +937,11 @@ bool ImGui_ImplDX12_Init(ImGui_ImplDX12_InitInfo* init_info)
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
     io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
 
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplDX12_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplDX12_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplDX12_DrawCallback_SetSamplerNearest;
+
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
     if (init_info->SrvDescriptorAllocFn == nullptr)
         ImGui_ImplDX12_InitLegacySingleDescriptorMode(init_info);
@@ -948,36 +963,6 @@ bool ImGui_ImplDX12_Init(ImGui_ImplDX12_InitInfo* init_info)
     return true;
 }
 
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-// Legacy initialization API Obsoleted in 1.91.5
-// font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture, they must be in 'srv_descriptor_heap'
-bool ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* srv_descriptor_heap, D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle)
-{
-    ImGui_ImplDX12_InitInfo init_info;
-    init_info.Device = device;
-    init_info.NumFramesInFlight = num_frames_in_flight;
-    init_info.RTVFormat = rtv_format;
-    init_info.SrvDescriptorHeap = srv_descriptor_heap;
-    init_info.LegacySingleSrvCpuDescriptor = font_srv_cpu_desc_handle;
-    init_info.LegacySingleSrvGpuDescriptor = font_srv_gpu_desc_handle;
-
-    D3D12_COMMAND_QUEUE_DESC queueDesc = {};
-    queueDesc.Type = D3D12_COMMAND_LIST_TYPE_DIRECT;
-    queueDesc.Flags = D3D12_COMMAND_QUEUE_FLAG_NONE;
-    queueDesc.NodeMask = 1;
-    HRESULT hr = device->CreateCommandQueue(&queueDesc, IID_PPV_ARGS(&init_info.CommandQueue));
-    IM_ASSERT(SUCCEEDED(hr));
-
-    bool ret = ImGui_ImplDX12_Init(&init_info);
-    ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();
-    bd->commandQueueOwned = true;
-    ImGuiIO& io = ImGui::GetIO();
-    io.BackendFlags &= ~ImGuiBackendFlags_RendererHasTextures; // Using legacy ImGui_ImplDX12_Init() call with 1 SRV descriptor we cannot support multiple textures.
-
-    return ret;
-}
-#endif
-
 void ImGui_ImplDX12_Shutdown()
 {
     ImGui_ImplDX12_Data* bd = ImGui_ImplDX12_GetBackendData();

backends/imgui_impl_dx12.h

@@ -5,7 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'D3D12_GPU_DESCRIPTOR_HANDLE' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplDX12_GetRenderState().
 
 // The aim of imgui_impl_dx12.h/.cpp is to be usable in your engine without any modification.
 // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
@@ -59,13 +59,6 @@ IMGUI_IMPL_API void     ImGui_ImplDX12_Shutdown();
 IMGUI_IMPL_API void     ImGui_ImplDX12_NewFrame();
 IMGUI_IMPL_API void     ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* graphics_command_list);
 
-#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
-// Legacy initialization API Obsoleted in 1.91.5
-// - font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture, they must be in 'srv_descriptor_heap'
-// - When we introduced the ImGui_ImplDX12_InitInfo struct we also added a 'ID3D12CommandQueue* CommandQueue' field.
-IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* srv_descriptor_heap, D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle);
-#endif
-
 // Use if you want to reset your rendering device without losing Dear ImGui state.
 IMGUI_IMPL_API bool     ImGui_ImplDX12_CreateDeviceObjects();
 IMGUI_IMPL_API void     ImGui_ImplDX12_InvalidateDeviceObjects();
@@ -81,6 +74,15 @@ struct ImGui_ImplDX12_RenderState
     ID3D12Device*               Device;
     ID3D12GraphicsCommandList*  CommandList;
 };
+IMGUI_IMPL_API ImGui_ImplDX12_RenderState* ImGui_ImplDX12_GetRenderState();
+
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+// Legacy initialization API Obsoleted in 1.91.5
+// - font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture, they must be in 'srv_descriptor_heap'
+// - When we introduced the ImGui_ImplDX12_InitInfo struct we also added a 'ID3D12CommandQueue* CommandQueue' field.
+// - DOES NOT SUPPORT ImGuiBackendFlags_RendererHasTextures.
+//IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* srv_descriptor_heap, D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle);
+#endif
 
 #if defined(__clang__)
 #pragma clang diagnostic pop

backends/imgui_impl_dx9.cpp

@@ -17,6 +17,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
 //  2026-03-19: Fixed issue in ImGui_ImplDX9_UpdateTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295, #9310)
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-06-11: DirectX9: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas.
@@ -162,6 +163,11 @@ static void ImGui_ImplDX9_SetupRenderState(ImDrawData* draw_data)
     }
 }
 
+// Draw callbacks
+static void ImGui_ImplDX9_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)    {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplDX9_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)    { ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); bd->pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR); bd->pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR); }
+static void ImGui_ImplDX9_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)   { ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); bd->pd3dDevice->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_POINT); bd->pd3dDevice->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_POINT); }
+
 // Render function.
 void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
 {
@@ -184,14 +190,14 @@ void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
     {
         if (bd->pVB) { bd->pVB->Release(); bd->pVB = nullptr; }
         bd->VertexBufferSize = draw_data->TotalVtxCount + 5000;
-        if (device->CreateVertexBuffer(bd->VertexBufferSize * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &bd->pVB, nullptr) < 0)
+        if (device->CreateVertexBuffer((UINT)bd->VertexBufferSize * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &bd->pVB, nullptr) < 0)
             return;
     }
     if (!bd->pIB || bd->IndexBufferSize < draw_data->TotalIdxCount)
     {
         if (bd->pIB) { bd->pIB->Release(); bd->pIB = nullptr; }
         bd->IndexBufferSize = draw_data->TotalIdxCount + 10000;
-        if (device->CreateIndexBuffer(bd->IndexBufferSize * sizeof(ImDrawIdx), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, sizeof(ImDrawIdx) == 2 ? D3DFMT_INDEX16 : D3DFMT_INDEX32, D3DPOOL_DEFAULT, &bd->pIB, nullptr) < 0)
+        if (device->CreateIndexBuffer((UINT)bd->IndexBufferSize * sizeof(ImDrawIdx), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, sizeof(ImDrawIdx) == 2 ? D3DFMT_INDEX16 : D3DFMT_INDEX32, D3DPOOL_DEFAULT, &bd->pIB, nullptr) < 0)
             return;
     }
 
@@ -269,8 +275,7 @@ void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
             if (pcmd->UserCallback != nullptr)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplDX9_DrawCallback_ResetRenderState)
                     ImGui_ImplDX9_SetupRenderState(draw_data);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -325,46 +330,6 @@ static bool ImGui_ImplDX9_CheckFormatSupport(LPDIRECT3DDEVICE9 pDevice, D3DFORMA
     return support;
 }
 
-bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
-{
-    ImGuiIO& io = ImGui::GetIO();
-    IMGUI_CHECKVERSION();
-    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
-
-    // Setup backend capabilities flags
-    ImGui_ImplDX9_Data* bd = IM_NEW(ImGui_ImplDX9_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_dx9";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
-
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-    platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = 4096;
-
-    bd->pd3dDevice = device;
-    bd->pd3dDevice->AddRef();
-    bd->HasRgbaSupport = ImGui_ImplDX9_CheckFormatSupport(bd->pd3dDevice, D3DFMT_A8B8G8R8);
-
-    return true;
-}
-
-void ImGui_ImplDX9_Shutdown()
-{
-    ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData();
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-
-    ImGui_ImplDX9_InvalidateDeviceObjects();
-    if (bd->pd3dDevice) { bd->pd3dDevice->Release(); }
-
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
-    platform_io.ClearRendererHandlers();
-    IM_DELETE(bd);
-}
-
 // Convert RGBA32 to BGRA32 (because RGBA32 is not well supported by DX9 devices)
 static void ImGui_ImplDX9_CopyTextureRegion(bool tex_use_colors, const ImU32* src, int src_pitch, ImU32* dst, int dst_pitch, int w, int h)
 {
@@ -477,6 +442,50 @@ void ImGui_ImplDX9_NewFrame()
     IM_UNUSED(bd);
 }
 
+
+bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+
+    // Setup backend capabilities flags
+    ImGui_ImplDX9_Data* bd = IM_NEW(ImGui_ImplDX9_Data)();
+    io.BackendRendererUserData = (void*)bd;
+    io.BackendRendererName = "imgui_impl_dx9";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
+
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = 4096;
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplDX9_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplDX9_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplDX9_DrawCallback_SetSamplerNearest;
+
+    bd->pd3dDevice = device;
+    bd->pd3dDevice->AddRef();
+    bd->HasRgbaSupport = ImGui_ImplDX9_CheckFormatSupport(bd->pd3dDevice, D3DFMT_A8B8G8R8);
+
+    return true;
+}
+
+void ImGui_ImplDX9_Shutdown()
+{
+    ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+
+    ImGui_ImplDX9_InvalidateDeviceObjects();
+    if (bd->pd3dDevice) { bd->pd3dDevice->Release(); }
+
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
+    platform_io.ClearRendererHandlers();
+    IM_DELETE(bd);
+}
+
 //-----------------------------------------------------------------------------
 
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_glfw.cpp

@@ -29,6 +29,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-04-21: Added a Win32-specific implementation of ImGui_ImplGlfw_GetContentScaleXXXX functions for legacy GLFW 3.2.
 //  2026-03-25: Mouse cursor is properly restored if changed by user app/code while using glfwSetInputMode(..., GLFW_CURSOR_DISABLED) or ImGuiConfigFlags_NoMouseCursorChange. Amend change from 2025-12-10.
 //  2026-02-10: Try to set IMGUI_IMPL_GLFW_DISABLE_X11 / IMGUI_IMPL_GLFW_DISABLE_WAYLAND automatically if corresponding headers are not accessible. (#9225)
 //  2025-12-12: Added IMGUI_IMPL_GLFW_DISABLE_X11 / IMGUI_IMPL_GLFW_DISABLE_WAYLAND to forcefully disable either.
@@ -212,7 +213,7 @@ struct ImGui_ImplGlfw_Data
     bool                    IsWayland;
     bool                    InstalledCallbacks;
     bool                    CallbacksChainForAllWindows;
-    char                    BackendPlatformName[32];
+    char                    BackendPlatformName[40];
 #ifdef EMSCRIPTEN_USE_EMBEDDED_GLFW3
     const char*             CanvasSelector;
 #endif
@@ -675,7 +676,13 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
 
     // Setup backend capabilities flags
     ImGui_ImplGlfw_Data* bd = IM_NEW(ImGui_ImplGlfw_Data)();
-    snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_glfw (%d)", GLFW_VERSION_COMBINED);
+    bd->Context = ImGui::GetCurrentContext();
+    bd->Window = window;
+    bd->Time = 0.0;
+    bd->IsWayland = ImGui_ImplGlfw_IsWayland();
+    ImGui_ImplGlfw_ContextMap_Add(window, bd->Context);
+
+    snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_glfw (%d)%s", GLFW_VERSION_COMBINED, bd->IsWayland ? " (Wayland)" : "");
     io.BackendPlatformUserData = (void*)bd;
     io.BackendPlatformName = bd->BackendPlatformName;
 #if GLFW_HAS_CREATECURSOR
@@ -683,12 +690,6 @@ static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, Glfw
 #endif
     io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
 
-    bd->Context = ImGui::GetCurrentContext();
-    bd->Window = window;
-    bd->Time = 0.0;
-    bd->IsWayland = ImGui_ImplGlfw_IsWayland();
-    ImGui_ImplGlfw_ContextMap_Add(window, bd->Context);
-
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
 #if GLFW_VERSION_COMBINED < 3300
     platform_io.Platform_SetClipboardTextFn = [](ImGuiContext*, const char* text) { glfwSetClipboardString(ImGui_ImplGlfw_GetBackendData()->Window, text); };
@@ -948,6 +949,16 @@ static void ImGui_ImplGlfw_UpdateGamepads()
     #undef MAP_ANALOG
 }
 
+// For GFLW 3.2 + Windows: include a simplified non-monitor aware version of ImGui_ImplWin32_GetDpiScaleForMonitor().
+// This is merely a band-aid to make using GLFW 3.2 a little bit nicer, but prefer to use GLFW 3.3+ or the full correct functions from the Win32 backend.
+#if !GLFW_HAS_PER_MONITOR_DPI && defined(_WIN32) && !defined(NOGDI)
+static float   ImGui_ImplWin32_GetLegacyDpiScale()   { const HDC dc = ::GetDC(nullptr); UINT xdpi = ::GetDeviceCaps(dc, LOGPIXELSX); ::ReleaseDC(nullptr, dc); return (float)xdpi / 96.0f; }
+static void    glfwGetWindowContentScale(GLFWwindow*, float* x_scale, float* y_scale)   { *x_scale = *y_scale = ImGui_ImplWin32_GetLegacyDpiScale(); }
+static void    glfwGetMonitorContentScale(GLFWmonitor*, float* x_scale, float* y_scale) { *x_scale = *y_scale = ImGui_ImplWin32_GetLegacyDpiScale(); }
+#undef GLFW_HAS_PER_MONITOR_DPI
+#define GLFW_HAS_PER_MONITOR_DPI 1
+#endif
+
 // - On Windows the process needs to be marked DPI-aware!! SDL2 doesn't do it by default. You can call ::SetProcessDPIAware() or call ImGui_ImplWin32_EnableDpiAwareness() from Win32 backend.
 // - Apple platforms use FramebufferScale so we always return 1.0f.
 // - Some accessibility applications are declaring virtual monitors with a DPI of 0.0f, see #7902. We preserve this value for caller to handle.
@@ -1016,7 +1027,7 @@ void ImGui_ImplGlfw_NewFrame()
     // (Accept glfwGetTime() not returning a monotonically increasing value. Seems to happens on disconnecting peripherals and probably on VMs and Emscripten, see #6491, #6189, #6114, #3644)
     double current_time = glfwGetTime();
     if (current_time <= bd->Time)
-        current_time = bd->Time + 0.00001f;
+        current_time = bd->Time + 0.00001;
     io.DeltaTime = bd->Time > 0.0 ? (float)(current_time - bd->Time) : (float)(1.0f / 60.0f);
     bd->Time = current_time;
 

backends/imgui_impl_metal.mm

@@ -16,6 +16,11 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-04-28: Added support for standard draw callbacks (in platform_io): DrawCallback_SetSamplerLinear and DrawCallback_SetSamplerNearest. (#9378, #9381)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState (others are not yet supported). (#9378)
+//  2026-04-14: Metal: use a dedicated bufferCacheLock to avoid crashing when bufferCache is replaced by a new object while being used for @synchronize(). (#9367)
+//  2026-04-03: Metal: avoid redundant vertex buffer bind in SetupRenderState. (#9343)
 //  2026-03-19: Fixed issue in ImGui_ImplMetal_RenderDrawData() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295, #9310)
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-06-11: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplMetal_CreateFontsTexture() and ImGui_ImplMetal_DestroyFontsTexture().
@@ -74,9 +79,12 @@
 @interface MetalContext : NSObject
 @property (nonatomic, strong) id<MTLDevice>                 device;
 @property (nonatomic, strong) id<MTLDepthStencilState>      depthStencilState;
+@property (nonatomic, strong) id<MTLSamplerState>           samplerStateLinear;
+@property (nonatomic, strong) id<MTLSamplerState>           samplerStateNearest;
 @property (nonatomic, strong) FramebufferDescriptor*        framebufferDescriptor; // framebuffer descriptor for current frame; transient
 @property (nonatomic, strong) NSMutableDictionary*          renderPipelineStateCache; // pipeline cache; keyed on framebuffer descriptors
 @property (nonatomic, strong) NSMutableArray<MetalBuffer*>* bufferCache;
+@property (nonatomic, strong) NSObject*                     bufferCacheLock;
 @property (nonatomic, assign) double                        lastBufferCachePurge;
 - (MetalBuffer*)dequeueReusableBufferOfLength:(NSUInteger)length device:(id<MTLDevice>)device;
 - (id<MTLRenderPipelineState>)renderPipelineStateForFramebufferDescriptor:(FramebufferDescriptor*)descriptor device:(id<MTLDevice>)device;
@@ -85,6 +93,7 @@
 struct ImGui_ImplMetal_Data
 {
     MetalContext*               SharedMetalContext;
+    id<MTLRenderCommandEncoder> RenderCommandEncoder;
 
     ImGui_ImplMetal_Data()      { memset((void*)this, 0, sizeof(*this)); }
 };
@@ -115,7 +124,6 @@ void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data,
     ImGui_ImplMetal_RenderDrawData(draw_data,
                                    (__bridge id<MTLCommandBuffer>)(commandBuffer),
                                    (__bridge id<MTLRenderCommandEncoder>)(commandEncoder));
-
 }
 
 bool ImGui_ImplMetal_CreateDeviceObjects(MTL::Device* device)
@@ -127,41 +135,6 @@ bool ImGui_ImplMetal_CreateDeviceObjects(MTL::Device* device)
 
 #pragma mark - Dear ImGui Metal Backend API
 
-bool ImGui_ImplMetal_Init(id<MTLDevice> device)
-{
-    ImGuiIO& io = ImGui::GetIO();
-    IMGUI_CHECKVERSION();
-    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
-
-    ImGui_ImplMetal_Data* bd = IM_NEW(ImGui_ImplMetal_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_metal";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
-
-    bd->SharedMetalContext = [[MetalContext alloc] init];
-    bd->SharedMetalContext.device = device;
-
-    return true;
-}
-
-void ImGui_ImplMetal_Shutdown()
-{
-    ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
-    IM_UNUSED(bd);
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-
-    ImGui_ImplMetal_DestroyDeviceObjects();
-    ImGui_ImplMetal_DestroyBackendData();
-
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
-    platform_io.ClearRendererHandlers();
-}
-
 void ImGui_ImplMetal_NewFrame(MTLRenderPassDescriptor* renderPassDescriptor)
 {
     ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
@@ -191,8 +164,8 @@ static void ImGui_ImplMetal_SetupRenderState(ImDrawData* draw_data, id<MTLComman
     {
         .originX = 0.0,
         .originY = 0.0,
-        .width = (double)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x),
-        .height = (double)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y),
+        .width = (double)(int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f),
+        .height = (double)(int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f),
         .znear = 0.0,
         .zfar = 1.0
     };
@@ -214,11 +187,16 @@ static void ImGui_ImplMetal_SetupRenderState(ImDrawData* draw_data, id<MTLComman
     [commandEncoder setVertexBytes:&ortho_projection length:sizeof(ortho_projection) atIndex:1];
 
     [commandEncoder setRenderPipelineState:renderPipelineState];
+    [commandEncoder setFragmentSamplerState:bd->SharedMetalContext.samplerStateLinear atIndex:0];
 
-    [commandEncoder setVertexBuffer:vertexBuffer.buffer offset:0 atIndex:0];
-    [commandEncoder setVertexBufferOffset:vertexBufferOffset atIndex:0];
+    [commandEncoder setVertexBuffer:vertexBuffer.buffer offset:vertexBufferOffset atIndex:0];
 }
 
+// Draw callbacks
+static void ImGui_ImplMetal_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)  {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplMetal_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData(); [bd->RenderCommandEncoder setFragmentSamplerState:bd->SharedMetalContext.samplerStateLinear atIndex:0]; }
+static void ImGui_ImplMetal_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData(); [bd->RenderCommandEncoder setFragmentSamplerState:bd->SharedMetalContext.samplerStateNearest atIndex:0]; }
+
 // Metal Render function.
 void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data, id<MTLCommandBuffer> commandBuffer, id<MTLRenderCommandEncoder> commandEncoder)
 {
@@ -226,8 +204,8 @@ void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data, id<MTLCommandBuffer>
     MetalContext* ctx = bd->SharedMetalContext;
 
     // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     if (fb_width <= 0 || fb_height <= 0 || draw_data->CmdLists.Size == 0)
         return;
 
@@ -255,6 +233,7 @@ void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data, id<MTLCommandBuffer>
     MetalBuffer* vertexBuffer = [ctx dequeueReusableBufferOfLength:vertexBufferLength device:commandBuffer.device];
     MetalBuffer* indexBuffer = [ctx dequeueReusableBufferOfLength:indexBufferLength device:commandBuffer.device];
 
+    bd->RenderCommandEncoder = commandEncoder;
     ImGui_ImplMetal_SetupRenderState(draw_data, commandBuffer, commandEncoder, renderPipelineState, vertexBuffer, 0);
 
     // Will project scissor/clipping rectangles into framebuffer space
@@ -275,8 +254,7 @@ void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data, id<MTLCommandBuffer>
             if (pcmd->UserCallback)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplMetal_DrawCallback_ResetRenderState)
                     ImGui_ImplMetal_SetupRenderState(draw_data, commandBuffer, commandEncoder, renderPipelineState, vertexBuffer, vertexBufferOffset);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -290,8 +268,8 @@ void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data, id<MTLCommandBuffer>
                 // Clamp to viewport as setScissorRect() won't accept values that are off bounds
                 if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
                 if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
-                if (clip_max.x > fb_width) { clip_max.x = (float)fb_width; }
-                if (clip_max.y > fb_height) { clip_max.y = (float)fb_height; }
+                if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
+                if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
                 if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
                     continue;
                 if (pcmd->ElemCount == 0) // drawIndexedPrimitives() validation doesn't accept this
@@ -328,14 +306,13 @@ void ImGui_ImplMetal_RenderDrawData(ImDrawData* draw_data, id<MTLCommandBuffer>
     MetalContext* sharedMetalContext = bd->SharedMetalContext;
     [commandBuffer addCompletedHandler:^(id<MTLCommandBuffer>)
     {
-        dispatch_async(dispatch_get_main_queue(), ^{
-            @synchronized(sharedMetalContext.bufferCache)
-            {
-                [sharedMetalContext.bufferCache addObject:vertexBuffer];
-                [sharedMetalContext.bufferCache addObject:indexBuffer];
-            }
-        });
+        @synchronized(sharedMetalContext.bufferCacheLock)
+        {
+            [sharedMetalContext.bufferCache addObject:vertexBuffer];
+            [sharedMetalContext.bufferCache addObject:indexBuffer];
+        }
     }];
+    bd->RenderCommandEncoder = nil;
 }
 
 static void ImGui_ImplMetal_DestroyTexture(ImTextureData* tex)
@@ -412,7 +389,17 @@ bool ImGui_ImplMetal_CreateDeviceObjects(id<MTLDevice> device)
     depthStencilDescriptor.depthWriteEnabled = NO;
     depthStencilDescriptor.depthCompareFunction = MTLCompareFunctionAlways;
     bd->SharedMetalContext.depthStencilState = [device newDepthStencilStateWithDescriptor:depthStencilDescriptor];
+    MTLSamplerDescriptor* samplerDescriptor = [[MTLSamplerDescriptor alloc] init];
+    samplerDescriptor.minFilter = MTLSamplerMinMagFilterLinear;
+    samplerDescriptor.magFilter = MTLSamplerMinMagFilterLinear;
+    samplerDescriptor.mipFilter = MTLSamplerMipFilterLinear;
+    bd->SharedMetalContext.samplerStateLinear = [device newSamplerStateWithDescriptor:samplerDescriptor];
+    samplerDescriptor.minFilter = MTLSamplerMinMagFilterNearest;
+    samplerDescriptor.magFilter = MTLSamplerMinMagFilterNearest;
+    samplerDescriptor.mipFilter = MTLSamplerMipFilterNearest;
+    bd->SharedMetalContext.samplerStateNearest = [device newSamplerStateWithDescriptor:samplerDescriptor];
 #ifdef IMGUI_IMPL_METAL_CPP
+    [samplerDescriptor release];
     [depthStencilDescriptor release];
 #endif
 
@@ -429,6 +416,48 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
             ImGui_ImplMetal_DestroyTexture(tex);
 
     [bd->SharedMetalContext.renderPipelineStateCache removeAllObjects];
+    bd->SharedMetalContext.samplerStateLinear = nil;
+    bd->SharedMetalContext.samplerStateNearest = nil;
+}
+
+bool ImGui_ImplMetal_Init(id<MTLDevice> device)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+
+    ImGui_ImplMetal_Data* bd = IM_NEW(ImGui_ImplMetal_Data)();
+    io.BackendRendererUserData = (void*)bd;
+    io.BackendRendererName = "imgui_impl_metal";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
+
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplMetal_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplMetal_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplMetal_DrawCallback_SetSamplerNearest;
+
+    bd->SharedMetalContext = [[MetalContext alloc] init];
+    bd->SharedMetalContext.device = device;
+
+    return true;
+}
+
+void ImGui_ImplMetal_Shutdown()
+{
+    ImGui_ImplMetal_Data* bd = ImGui_ImplMetal_GetBackendData();
+    IM_UNUSED(bd);
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+
+    ImGui_ImplMetal_DestroyDeviceObjects();
+    ImGui_ImplMetal_DestroyBackendData();
+
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
+    platform_io.ClearRendererHandlers();
 }
 
 #pragma mark - MetalBuffer implementation
@@ -514,6 +543,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     {
         self.renderPipelineStateCache = [NSMutableDictionary dictionary];
         self.bufferCache = [NSMutableArray array];
+        self.bufferCacheLock = [[NSObject alloc] init];
         _lastBufferCachePurge = GetMachAbsoluteTimeInSeconds();
     }
     return self;
@@ -521,9 +551,9 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
 
 - (MetalBuffer*)dequeueReusableBufferOfLength:(NSUInteger)length device:(id<MTLDevice>)device
 {
-    uint64_t now = GetMachAbsoluteTimeInSeconds();
+    double now = GetMachAbsoluteTimeInSeconds();
 
-    @synchronized(self.bufferCache)
+    @synchronized(self.bufferCacheLock)
     {
         // Purge old buffers that haven't been useful for a while
         if (now - self.lastBufferCachePurge > 1.0)
@@ -555,7 +585,7 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     return [[MetalBuffer alloc] initWithBuffer:backing];
 }
 
-// Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
+// Bilinear sampling is required.
 - (id<MTLRenderPipelineState>)renderPipelineStateForFramebufferDescriptor:(FramebufferDescriptor*)descriptor device:(id<MTLDevice>)device
 {
     NSError* error = nil;
@@ -590,9 +620,9 @@ void ImGui_ImplMetal_DestroyDeviceObjects()
     "}\n"
     "\n"
     "fragment half4 fragment_main(VertexOut in [[stage_in]],\n"
-    "                             texture2d<half, access::sample> texture [[texture(0)]]) {\n"
-    "    constexpr sampler linearSampler(coord::normalized, min_filter::linear, mag_filter::linear, mip_filter::linear);\n"
-    "    half4 texColor = texture.sample(linearSampler, in.texCoords);\n"
+    "                             texture2d<half, access::sample> texture [[texture(0)]],\n"
+    "                             sampler textureSampler [[sampler(0)]]) {\n"
+    "    half4 texColor = texture.sample(textureSampler, in.texCoords);\n"
     "    return half4(in.color) * texColor;\n"
     "}\n";
 

backends/imgui_impl_metal4.h

@@ -0,0 +1,89 @@
+// dear imgui: Renderer Backend for Metal 4
+// This needs to be used along with a Platform Backend (e.g. OSX)
+// Metal 4 requires Apple Silicon and macOS 26+.
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'MTLTexture.gpuResourceID' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
+//  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
+//  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+// Missing features or Issues:
+//  [ ] Texture view pool support? Reevaluate which type to use for ImtextureID.
+
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+#ifndef IMGUI_DISABLE
+
+//-----------------------------------------------------------------------------
+// ObjC API
+//-----------------------------------------------------------------------------
+
+#ifdef __OBJC__
+
+@class MTL4RenderPassDescriptor;
+@protocol MTLDevice, MTL4CommandBuffer, MTL4RenderCommandEncoder, MTL4CommandQueue;
+
+// framesInFlight must match the number of frames your application keeps in flight (e.g. the size of your own
+// command buffer/allocator ring). The backend uses it to size its own per-frame-in-flight resources (constant
+// buffer, vertex/index buffer cache) so the CPU never overwrites a slot the GPU may still be reading.
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+IMGUI_IMPL_API bool ImGui_ImplMetal4_Init(id<MTLDevice> device, id<MTL4CommandQueue> commandQueue, int framesInFlight);
+IMGUI_IMPL_API void ImGui_ImplMetal4_Shutdown();
+// frameInFlightIndex must match the slot you use to index your own per-frame-in-flight resources
+// (e.g. the same index used to pick your command buffer/allocator), and must be < framesInFlight passed to Init().
+IMGUI_IMPL_API void ImGui_ImplMetal4_NewFrame(MTL4RenderPassDescriptor* renderPassDescriptor, int frameInFlightIndex);
+IMGUI_IMPL_API void ImGui_ImplMetal4_RenderDrawData(ImDrawData* drawData,
+                                                   id<MTL4CommandBuffer> commandBuffer,
+                                                   id<MTL4RenderCommandEncoder> commandEncoder);
+
+// Called by Init/NewFrame/Shutdown
+IMGUI_IMPL_API bool ImGui_ImplMetal4_CreateDeviceObjects(id<MTLDevice> device);
+IMGUI_IMPL_API void ImGui_ImplMetal4_DestroyDeviceObjects();
+
+// (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = nullptr to handle this manually.
+IMGUI_IMPL_API void ImGui_ImplMetal4_UpdateTexture(ImTextureData* tex);
+
+#endif
+
+//-----------------------------------------------------------------------------
+// C++ API
+//-----------------------------------------------------------------------------
+
+// Enable Metal C++ binding support with '#define IMGUI_IMPL_METAL_CPP' in your imconfig.h file
+// More info about using Metal from C++: https://developer.apple.com/metal/cpp/
+
+#ifdef IMGUI_IMPL_METAL_CPP
+#ifndef __OBJC__
+
+// Forward declare relevant classes from the MTL and MTL4 namespace
+namespace MTL { class Device; }
+namespace MTL4 { class CommandQueue; class CommandBuffer; class RenderPassDescriptor; class RenderCommandEncoder; }
+
+// Follow "Getting Started" link and check examples/ folder to learn about using backends!
+IMGUI_IMPL_API bool ImGui_ImplMetal4_Init(MTL::Device* device, MTL4::CommandQueue* commandQueue, int framesInFlight);
+IMGUI_IMPL_API void ImGui_ImplMetal4_Shutdown();
+IMGUI_IMPL_API void ImGui_ImplMetal4_NewFrame(MTL4::RenderPassDescriptor* renderPassDescriptor, int frameInFlightIndex);
+IMGUI_IMPL_API void ImGui_ImplMetal4_RenderDrawData(ImDrawData* draw_data,
+                                                   MTL4::CommandBuffer* commandBuffer,
+                                                   MTL4::RenderCommandEncoder* commandEncoder);
+
+// Called by Init/NewFrame/Shutdown
+IMGUI_IMPL_API bool ImGui_ImplMetal4_CreateDeviceObjects(MTL::Device* device);
+IMGUI_IMPL_API void ImGui_ImplMetal4_DestroyDeviceObjects();
+
+// (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = nullptr to handle this manually.
+IMGUI_IMPL_API void ImGui_ImplMetal4_UpdateTexture(ImTextureData* tex);
+
+#endif
+#endif
+
+//-----------------------------------------------------------------------------
+
+#endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_metal4.mm

@@ -0,0 +1,744 @@
+// dear imgui: Renderer Backend for Metal 4
+// This needs to be used along with a Platform Backend (e.g. OSX)
+// Metal 4 requires Apple Silicon and macOS 26+.
+
+// Implemented features:
+//  [X] Renderer: User texture binding. Use 'MTLTexture' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
+//  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
+//  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+// Missing features or Issues:
+//  [ ] Texture view pool support? Reevaluate which type to use for ImtextureID.
+
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-07-07: Metal 4: Added metal-cpp support. (#9461)
+//  2026-07-02: Metal 4: Added new Metal 4 backend implementation. (#9458)
+
+#include "imgui.h"
+#ifndef IMGUI_DISABLE
+#include "imgui_impl_metal4.h"
+#import <time.h>
+#import <Metal/Metal.h>
+
+#ifdef IMGUI_IMPL_METAL_CPP
+#include <Metal/Metal.hpp>
+#endif
+
+#pragma mark - Support classes and structs
+
+struct ImGui_Metal4_ConstantData
+{
+    float ModelViewProjectionMatrix[4][4];
+};
+
+@interface MetalBuffer : NSObject
+@property (nonatomic, strong) id<MTLBuffer> buffer;
+@property (nonatomic, assign) double        lastReuseTime;
+- (instancetype)initWithBuffer:(id<MTLBuffer>)buffer;
+@end
+
+// An object that encapsulates the data necessary to uniquely identify a
+// render pipeline state. These are used as cache keys.
+@interface FramebufferDescriptor : NSObject<NSCopying>
+@property (nonatomic, assign) unsigned long  sampleCount;
+@property (nonatomic, assign) MTLPixelFormat colorPixelFormat;
+@property (nonatomic, assign) MTLPixelFormat depthPixelFormat;
+@property (nonatomic, assign) MTLPixelFormat stencilPixelFormat;
+- (instancetype)initWithRenderPassDescriptor:(MTL4RenderPassDescriptor*)renderPassDescriptor;
+@end
+
+@interface MetalTexture : NSObject
+@property (nonatomic, strong) id<MTLTexture> metalTexture;
+- (instancetype)initWithTexture:(id<MTLTexture>)metalTexture;
+@end
+
+// A singleton that stores long-lived objects that are needed by the Metal
+// renderer backend. Stores the render pipeline state cache and the default
+// font texture, and manages the reusable buffer cache.
+@interface MetalContext : NSObject
+@property (nonatomic, strong) id<MTLDevice>                 device;
+@property (nonatomic, strong) id<MTL4CommandQueue>          commandQueue;
+@property (nonatomic, strong) id<MTLDepthStencilState>      depthStencilState;
+@property (nonatomic, strong) id<MTL4ArgumentTable>         argumentTable;
+@property (nonatomic, strong) id<MTLSamplerState>           samplerStateLinear;
+@property (nonatomic, strong) id<MTLSamplerState>           samplerStateNearest;
+@property (nonatomic, strong) id<MTLResidencySet>           residencySet;
+@property (nonatomic, strong) FramebufferDescriptor*        framebufferDescriptor;
+@property (nonatomic, strong) NSMutableDictionary*          renderPipelineStateCache;
+@property (nonatomic, assign) NSUInteger                    framesInFlight;
+@property (nonatomic, assign) NSUInteger                    currentFrameSlot;
+@property (nonatomic, strong) NSArray<id<MTLBuffer>>*       constantBuffers;
+@property (nonatomic, assign) ImGui_Metal4_ConstantData**   constantBufferContentsArray;
+@property (nonatomic, strong) NSMutableArray<NSMutableArray<MetalBuffer*>*>* bufferCaches;
+@property (nonatomic, strong) NSObject*                     bufferCacheLock;
+@property (nonatomic, assign) double                        lastBufferCachePurge;
+- (id<MTLBuffer>)currentConstantBuffer;
+- (ImGui_Metal4_ConstantData*)currentConstantBufferContents;
+- (MetalBuffer*)dequeueReusableBufferOfLength:(NSUInteger)length device:(id<MTLDevice>)device;
+- (id<MTLRenderPipelineState>)renderPipelineStateForFramebufferDescriptor:(FramebufferDescriptor*)descriptor device:(id<MTLDevice>)device;
+@end
+
+struct ImGui_ImplMetal4_Data
+{
+    MetalContext*                SharedMetalContext;
+    id<MTL4RenderCommandEncoder> RenderCommandEncoder;
+
+    ImGui_ImplMetal4_Data()       { memset((void*)this, 0, sizeof(*this)); }
+};
+
+static ImGui_ImplMetal4_Data*    ImGui_ImplMetal4_GetBackendData()    { return ImGui::GetCurrentContext() ? (ImGui_ImplMetal4_Data*)ImGui::GetIO().BackendRendererUserData : nullptr; }
+static void                      ImGui_ImplMetal4_DestroyBackendData(){ IM_DELETE(ImGui_ImplMetal4_GetBackendData()); }
+
+static inline CFTimeInterval    GetMachAbsoluteTimeInSeconds()      { return (CFTimeInterval)(double)(clock_gettime_nsec_np(CLOCK_UPTIME_RAW) / 1e9); }
+
+#ifdef IMGUI_IMPL_METAL_CPP
+
+#pragma mark - Dear ImGui Metal C++ Backend API
+
+bool ImGui_ImplMetal4_Init(MTL::Device* device, MTL4::CommandQueue* commandQueue, int framesInFlight)
+{
+    return ImGui_ImplMetal4_Init((__bridge id<MTLDevice>)(device),(__bridge id<MTL4CommandQueue>)(commandQueue), framesInFlight);
+}
+
+void ImGui_ImplMetal4_NewFrame(MTL4::RenderPassDescriptor* renderPassDescriptor, int frameInFlightIndex)
+{
+    ImGui_ImplMetal4_NewFrame((__bridge MTL4RenderPassDescriptor*)(renderPassDescriptor), frameInFlightIndex);
+}
+
+void ImGui_ImplMetal4_RenderDrawData(ImDrawData* draw_data,
+                                    MTL4::CommandBuffer* commandBuffer,
+                                    MTL4::RenderCommandEncoder* commandEncoder)
+{
+    ImGui_ImplMetal4_RenderDrawData(draw_data,
+                                   (__bridge id<MTL4CommandBuffer>)(commandBuffer),
+                                   (__bridge id<MTL4RenderCommandEncoder>)(commandEncoder));
+}
+
+bool ImGui_ImplMetal_CreateDeviceObjects(MTL::Device* device)
+{
+    return ImGui_ImplMetal4_CreateDeviceObjects((__bridge id<MTLDevice>)(device));
+}
+
+#endif // #ifdef IMGUI_IMPL_METAL_CPP
+
+#pragma mark - Dear ImGui Metal Backend API
+
+void ImGui_ImplMetal4_NewFrame(MTL4RenderPassDescriptor* renderPassDescriptor, int frameInFlightIndex)
+{
+    ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData();
+    IM_ASSERT(bd != nil && "Context or backend not initialized! Did you call ImGui_ImplMetal4_Init()?");
+    IM_ASSERT(frameInFlightIndex < bd->SharedMetalContext.framesInFlight && "frameInFlightIndex out of range! See framesInFlight passed to ImGui_ImplMetal4_Init().");
+#ifdef IMGUI_IMPL_METAL_CPP
+    bd->SharedMetalContext.framebufferDescriptor = [[[FramebufferDescriptor alloc] initWithRenderPassDescriptor:renderPassDescriptor]autorelease];
+#else
+    bd->SharedMetalContext.framebufferDescriptor = [[FramebufferDescriptor alloc] initWithRenderPassDescriptor:renderPassDescriptor];
+#endif
+    bd->SharedMetalContext.currentFrameSlot = (NSUInteger)frameInFlightIndex;
+    if (bd->SharedMetalContext.depthStencilState == nil)
+        ImGui_ImplMetal4_CreateDeviceObjects(bd->SharedMetalContext.device);
+}
+
+static void ImGui_ImplMetal4_SetupRenderState(ImDrawData* draw_data, id<MTL4CommandBuffer> commandBuffer,
+    id<MTL4RenderCommandEncoder> commandEncoder, id<MTLRenderPipelineState> renderPipelineState,
+    MetalBuffer* vertexBuffer, size_t vertexBufferOffset)
+{
+    IM_UNUSED(commandBuffer);
+    ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData();
+    [commandEncoder setCullMode:MTLCullModeNone];
+    [commandEncoder setDepthStencilState:bd->SharedMetalContext.depthStencilState];
+
+    // Setup viewport, orthographic projection matrix
+    // Our visible imgui space lies from draw_data->DisplayPos (top left) to
+    // draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayMin is typically (0,0) for single viewport apps.
+    MTLViewport viewport =
+    {
+        .originX = 0.0,
+        .originY = 0.0,
+        .width = (double)(int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f),
+        .height = (double)(int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f),
+        .znear = 0.0,
+        .zfar = 1.0
+    };
+    [commandEncoder setViewport:viewport];
+
+    float L = draw_data->DisplayPos.x;
+    float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x;
+    float T = draw_data->DisplayPos.y;
+    float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y;
+    float N = (float)viewport.znear;
+    float F = (float)viewport.zfar;
+    const float ortho_projection[4][4] =
+    {
+        { 2.0f/(R-L),   0.0f,           0.0f,   0.0f },
+        { 0.0f,         2.0f/(T-B),     0.0f,   0.0f },
+        { 0.0f,         0.0f,        1/(F-N),   0.0f },
+        { (R+L)/(L-R),  (T+B)/(B-T), N/(F-N),   1.0f },
+    };
+    ImGui_Metal4_ConstantData* constantBufferContents = [bd->SharedMetalContext currentConstantBufferContents];
+    memcpy(constantBufferContents->ModelViewProjectionMatrix, ortho_projection, sizeof(ortho_projection));
+
+    id<MTL4ArgumentTable> argumentTable = bd->SharedMetalContext.argumentTable;
+    [argumentTable setAddress:[bd->SharedMetalContext currentConstantBuffer].gpuAddress atIndex:1];
+    [argumentTable setAddress:(vertexBuffer.buffer.gpuAddress + vertexBufferOffset) attributeStride:sizeof(ImDrawVert) atIndex:0];
+    [argumentTable setSamplerState:bd->SharedMetalContext.samplerStateLinear.gpuResourceID atIndex:0];
+    [commandEncoder setArgumentTable:argumentTable atStages:MTLRenderStageVertex | MTLRenderStageFragment];
+    [commandEncoder setRenderPipelineState:renderPipelineState];
+}
+
+static void ImGui_ImplMetal4_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)  {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplMetal4_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData(); [bd->SharedMetalContext.argumentTable setSamplerState:bd->SharedMetalContext.samplerStateLinear.gpuResourceID atIndex:0]; }
+static void ImGui_ImplMetal4_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData(); [bd->SharedMetalContext.argumentTable setSamplerState:bd->SharedMetalContext.samplerStateNearest.gpuResourceID atIndex:0]; }
+
+void ImGui_ImplMetal4_RenderDrawData(ImDrawData* draw_data, id<MTL4CommandBuffer> commandBuffer, id<MTL4RenderCommandEncoder> commandEncoder)
+{
+    ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData();
+    MetalContext* ctx = bd->SharedMetalContext;
+
+    // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
+    if (fb_width <= 0 || fb_height <= 0 || draw_data->CmdLists.Size == 0)
+        return;
+
+    // Catch up with texture updates. Most of the times, the list will have 1 element with an OK status, aka nothing to do.
+    // (This almost always points to ImGui::GetPlatformIO().Textures[] but is part of ImDrawData to allow overriding or disabling texture updates).
+    if (draw_data->Textures != nullptr)
+        for (ImTextureData* tex : *draw_data->Textures)
+            if (tex->Status != ImTextureStatus_OK)
+                ImGui_ImplMetal4_UpdateTexture(tex);
+
+    // Try to retrieve a render pipeline state that is compatible with the framebuffer config for this frame
+    // The hit rate for this cache should be very near 100%.
+    id<MTLRenderPipelineState> renderPipelineState = ctx.renderPipelineStateCache[ctx.framebufferDescriptor];
+    if (renderPipelineState == nil)
+    {
+        // No luck; make a new render pipeline state
+        renderPipelineState = [ctx renderPipelineStateForFramebufferDescriptor:ctx.framebufferDescriptor device:commandBuffer.device];
+
+        // Cache render pipeline state for later reuse
+        ctx.renderPipelineStateCache[ctx.framebufferDescriptor] = renderPipelineState;
+    }
+
+    size_t vertexBufferLength = (size_t)draw_data->TotalVtxCount * sizeof(ImDrawVert);
+    size_t indexBufferLength = (size_t)draw_data->TotalIdxCount * sizeof(ImDrawIdx);
+    MetalBuffer* vertexBuffer = [ctx dequeueReusableBufferOfLength:vertexBufferLength device:commandBuffer.device];
+    MetalBuffer* indexBuffer = [ctx dequeueReusableBufferOfLength:indexBufferLength device:commandBuffer.device];
+
+    bd->RenderCommandEncoder = commandEncoder;
+    ImGui_ImplMetal4_SetupRenderState(draw_data, commandBuffer, commandEncoder, renderPipelineState, vertexBuffer, 0);
+
+    // Will project scissor/clipping rectangles into framebuffer space
+    ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
+    ImVec2 clip_scale = draw_data->FramebufferScale; // (1,1) unless using retina display which are often (2,2)
+
+    // Render command lists
+    size_t vertexBufferOffset = 0;
+    size_t indexBufferOffset = 0;
+    for (const ImDrawList* draw_list : draw_data->CmdLists)
+    {
+        memcpy((char*)vertexBuffer.buffer.contents + vertexBufferOffset, draw_list->VtxBuffer.Data, (size_t)draw_list->VtxBuffer.Size * sizeof(ImDrawVert));
+        memcpy((char*)indexBuffer.buffer.contents + indexBufferOffset, draw_list->IdxBuffer.Data, (size_t)draw_list->IdxBuffer.Size * sizeof(ImDrawIdx));
+
+        for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++)
+        {
+            const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i];
+            if (pcmd->UserCallback)
+            {
+                // User callback, registered via ImDrawList::AddCallback()
+                if (pcmd->UserCallback == ImGui_ImplMetal4_DrawCallback_ResetRenderState)
+                    ImGui_ImplMetal4_SetupRenderState(draw_data, commandBuffer, commandEncoder, renderPipelineState, vertexBuffer, vertexBufferOffset);
+                else
+                    pcmd->UserCallback(draw_list, pcmd);
+            }
+            else
+            {
+                // Project scissor/clipping rectangles into framebuffer space
+                ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
+                ImVec2 clip_max((pcmd->ClipRect.z - clip_off.x) * clip_scale.x, (pcmd->ClipRect.w - clip_off.y) * clip_scale.y);
+
+                // Clamp to viewport as setScissorRect() won't accept values that are off bounds
+                if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
+                if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
+                if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
+                if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
+                if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
+                    continue;
+                if (pcmd->ElemCount == 0) // drawIndexedPrimitives() validation doesn't accept this
+                    continue;
+
+                // Apply scissor/clipping rectangle
+                MTLScissorRect scissorRect =
+                {
+                    .x = NSUInteger(clip_min.x),
+                    .y = NSUInteger(clip_min.y),
+                    .width = NSUInteger(clip_max.x - clip_min.x),
+                    .height = NSUInteger(clip_max.y - clip_min.y)
+                };
+                [commandEncoder setScissorRect:scissorRect];
+
+                // Bind texture, Draw
+                ImTextureID tex_id = pcmd->GetTexID();
+                if (tex_id != ImTextureID_Invalid)
+                {
+                    id<MTLTexture> texture = (__bridge id<MTLTexture>)(void*)(intptr_t)tex_id;
+                    [bd->SharedMetalContext.residencySet addAllocation:texture];
+                    [bd->SharedMetalContext.argumentTable setTexture:texture.gpuResourceID atIndex:0];
+                }
+
+                [bd->SharedMetalContext.argumentTable setAddress:(vertexBuffer.buffer.gpuAddress + vertexBufferOffset + (pcmd->VtxOffset * sizeof(ImDrawVert))) attributeStride:sizeof(ImDrawVert) atIndex:0];
+
+                size_t indexBufferCmdOffset = indexBufferOffset + (pcmd->IdxOffset * sizeof(ImDrawIdx));
+                [commandEncoder drawIndexedPrimitives:MTLPrimitiveTypeTriangle
+                                   indexCount:pcmd->ElemCount
+                                    indexType:sizeof(ImDrawIdx) == 2 ? MTLIndexTypeUInt16 : MTLIndexTypeUInt32
+                                  indexBuffer:indexBuffer.buffer.gpuAddress + indexBufferCmdOffset
+                            indexBufferLength:indexBuffer.buffer.length - indexBufferCmdOffset];
+            }
+        }
+
+        vertexBufferOffset += (size_t)draw_list->VtxBuffer.Size * sizeof(ImDrawVert);
+        indexBufferOffset += (size_t)draw_list->IdxBuffer.Size * sizeof(ImDrawIdx);
+    }
+
+    MetalContext* sharedMetalContext = bd->SharedMetalContext;
+    @synchronized(sharedMetalContext.bufferCacheLock)
+    {
+        NSMutableArray<MetalBuffer*>* slotCache = sharedMetalContext.bufferCaches[sharedMetalContext.currentFrameSlot];
+        [slotCache addObject:vertexBuffer];
+        [slotCache addObject:indexBuffer];
+    }
+    
+    // Commit residency set
+    [bd->SharedMetalContext.residencySet commit];
+    bd->RenderCommandEncoder = nil;
+}
+
+static void ImGui_ImplMetal4_DestroyTexture(ImTextureData* tex)
+{
+    if (MetalTexture* backend_tex = (__bridge_transfer MetalTexture*)(tex->BackendUserData))
+    {
+        IM_ASSERT(backend_tex.metalTexture == (__bridge id<MTLTexture>)(void*)(intptr_t)tex->TexID);
+        backend_tex.metalTexture = nil;
+
+        // Clear identifiers and mark as destroyed (in order to allow e.g. calling InvalidateDeviceObjects while running)
+        tex->SetTexID(ImTextureID_Invalid);
+        tex->BackendUserData = nullptr;
+    }
+    tex->SetStatus(ImTextureStatus_Destroyed);
+}
+
+void ImGui_ImplMetal4_UpdateTexture(ImTextureData* tex)
+{
+    ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData();
+    if (tex->Status == ImTextureStatus_WantCreate)
+    {
+        // Create and upload new texture to graphics system
+        //IMGUI_DEBUG_LOG("UpdateTexture #%03d: WantCreate %dx%d\n", tex->UniqueID, tex->Width, tex->Height);
+        IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
+        IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
+
+        // We are retrieving and uploading the font atlas as a 4-channels RGBA texture here.
+        // In theory we could call GetTexDataAsAlpha8() and upload a 1-channel texture to save on memory access bandwidth.
+        // However, using a shader designed for 1-channel texture would make it less obvious to use the ImTextureID facility to render users own textures.
+        // You can make that change in your implementation.
+        MTLTextureDescriptor* textureDescriptor = [MTLTextureDescriptor texture2DDescriptorWithPixelFormat:MTLPixelFormatRGBA8Unorm
+                                                                                                     width:(NSUInteger)tex->Width
+                                                                                                    height:(NSUInteger)tex->Height
+                                                                                                 mipmapped:NO];
+        textureDescriptor.usage = MTLTextureUsageShaderRead;
+        textureDescriptor.storageMode = MTLStorageModeShared;
+
+        id <MTLTexture> texture = [bd->SharedMetalContext.device newTextureWithDescriptor:textureDescriptor];
+        [bd->SharedMetalContext.residencySet addAllocation:texture];
+        [texture replaceRegion:MTLRegionMake2D(0, 0, (NSUInteger)tex->Width, (NSUInteger)tex->Height) mipmapLevel:0 withBytes:tex->Pixels bytesPerRow:(NSUInteger)tex->Width * 4];
+        MetalTexture* backend_tex = [[MetalTexture alloc] initWithTexture:texture];
+
+        // Store identifiers
+        tex->SetTexID((ImTextureID)(intptr_t)texture);
+        tex->SetStatus(ImTextureStatus_OK);
+        tex->BackendUserData = (__bridge_retained void*)(backend_tex);
+    }
+    else if (tex->Status == ImTextureStatus_WantUpdates)
+    {
+        // Update selected blocks. We only ever write to textures regions which have never been used before!
+        // This backend choose to use tex->Updates[] but you can use tex->UpdateRect to upload a single region.
+        MetalTexture* backend_tex = (__bridge MetalTexture*)(tex->BackendUserData);
+        for (ImTextureRect& r : tex->Updates)
+        {
+            [backend_tex.metalTexture replaceRegion:MTLRegionMake2D((NSUInteger)r.x, (NSUInteger)r.y, (NSUInteger)r.w, (NSUInteger)r.h)
+                                        mipmapLevel:0
+                                          withBytes:tex->GetPixelsAt(r.x, r.y)
+                                        bytesPerRow:(NSUInteger)tex->Width * 4];
+        }
+        tex->SetStatus(ImTextureStatus_OK);
+    }
+    else if (tex->Status == ImTextureStatus_WantDestroy && tex->UnusedFrames > 0)
+    {
+        ImGui_ImplMetal4_DestroyTexture(tex);
+    }
+}
+
+bool ImGui_ImplMetal4_CreateDeviceObjects(id<MTLDevice> device)
+{
+    ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData();
+
+    MTLResidencySetDescriptor* residencySetDescriptor = [[MTLResidencySetDescriptor alloc] init];
+    residencySetDescriptor.initialCapacity = 1000;
+
+    NSError* error = nil;
+    bd->SharedMetalContext.residencySet = [device newResidencySetWithDescriptor:residencySetDescriptor error:&error];
+    IM_ASSERT(bd->SharedMetalContext.residencySet != nil && error == nil);
+
+    [bd->SharedMetalContext.commandQueue addResidencySet:bd->SharedMetalContext.residencySet];
+
+    MTLDepthStencilDescriptor* depthStencilDescriptor = [[MTLDepthStencilDescriptor alloc] init];
+    depthStencilDescriptor.depthWriteEnabled = NO;
+    depthStencilDescriptor.depthCompareFunction = MTLCompareFunctionAlways;
+    bd->SharedMetalContext.depthStencilState = [device newDepthStencilStateWithDescriptor:depthStencilDescriptor];
+    MTLSamplerDescriptor* samplerDescriptor = [[MTLSamplerDescriptor alloc] init];
+    samplerDescriptor.supportArgumentBuffers = YES;
+    samplerDescriptor.minFilter = MTLSamplerMinMagFilterLinear;
+    samplerDescriptor.magFilter = MTLSamplerMinMagFilterLinear;
+    samplerDescriptor.mipFilter = MTLSamplerMipFilterLinear;
+    bd->SharedMetalContext.samplerStateLinear = [device newSamplerStateWithDescriptor:samplerDescriptor];
+    samplerDescriptor.minFilter = MTLSamplerMinMagFilterNearest;
+    samplerDescriptor.magFilter = MTLSamplerMinMagFilterNearest;
+    samplerDescriptor.mipFilter = MTLSamplerMipFilterNearest;
+    bd->SharedMetalContext.samplerStateNearest = [device newSamplerStateWithDescriptor:samplerDescriptor];
+
+    NSMutableArray<id<MTLBuffer>>* constantBuffers = [NSMutableArray array];
+    ImGui_Metal4_ConstantData** constantBufferContentsArray = (ImGui_Metal4_ConstantData**)malloc(sizeof(ImGui_Metal4_ConstantData*) * bd->SharedMetalContext.framesInFlight);
+    for (NSUInteger i = 0; i < bd->SharedMetalContext.framesInFlight; i++)
+    {
+        id<MTLBuffer> constantBuffer = [device newBufferWithLength:sizeof(ImGui_Metal4_ConstantData) options:MTLResourceStorageModeShared];
+        [constantBuffers addObject:constantBuffer];
+        constantBufferContentsArray[i] = (ImGui_Metal4_ConstantData*)constantBuffer.contents;
+        [bd->SharedMetalContext.residencySet addAllocation:constantBuffer];
+    }
+    bd->SharedMetalContext.constantBuffers = constantBuffers;
+    bd->SharedMetalContext.constantBufferContentsArray = constantBufferContentsArray;
+
+    MTL4ArgumentTableDescriptor* argumentTableDescriptor = [[MTL4ArgumentTableDescriptor alloc] init];
+    argumentTableDescriptor.maxBufferBindCount = 8;
+    argumentTableDescriptor.maxTextureBindCount = 8;
+    argumentTableDescriptor.maxSamplerStateBindCount = 8;
+    argumentTableDescriptor.supportAttributeStrides = YES; // required: vertex buffer is bound via setAddress:stride:atIndex: for stage_in fetch
+
+    bd->SharedMetalContext.argumentTable = [device newArgumentTableWithDescriptor:argumentTableDescriptor error:&error];
+    IM_ASSERT(bd->SharedMetalContext.argumentTable != nil && error == nil);
+
+    return true;
+}
+
+void ImGui_ImplMetal4_DestroyDeviceObjects()
+{
+    ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData();
+
+    // Destroy all textures
+    for (ImTextureData* tex : ImGui::GetPlatformIO().Textures)
+        if (tex->RefCount == 1)
+            ImGui_ImplMetal4_DestroyTexture(tex);
+
+    [bd->SharedMetalContext.renderPipelineStateCache removeAllObjects];
+    bd->SharedMetalContext.samplerStateLinear = nil;
+    bd->SharedMetalContext.samplerStateNearest = nil;
+}
+
+bool ImGui_ImplMetal4_Init(id<MTLDevice> device, id<MTL4CommandQueue> commandQueue, int framesInFlight)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+    IM_ASSERT(framesInFlight > 0 && "framesInFlight must be at least 1!");
+
+    ImGui_ImplMetal4_Data* bd = IM_NEW(ImGui_ImplMetal4_Data)();
+    io.BackendRendererUserData = (void*)bd;
+    io.BackendRendererName = "imgui_impl_metal4";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
+
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplMetal4_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplMetal4_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplMetal4_DrawCallback_SetSamplerNearest;
+
+    bd->SharedMetalContext = [[MetalContext alloc] init];
+    bd->SharedMetalContext.device = device;
+    bd->SharedMetalContext.commandQueue = commandQueue;
+    bd->SharedMetalContext.framesInFlight = (NSUInteger)framesInFlight;
+    NSMutableArray<NSMutableArray<MetalBuffer*>*>* bufferCaches = [NSMutableArray array];
+    for (NSUInteger i = 0; i < framesInFlight; i++)
+        [bufferCaches addObject:[NSMutableArray array]];
+    bd->SharedMetalContext.bufferCaches = bufferCaches;
+    return true;
+}
+
+void ImGui_ImplMetal4_Shutdown()
+{
+    ImGui_ImplMetal4_Data* bd = ImGui_ImplMetal4_GetBackendData();
+    IM_UNUSED(bd);
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+
+    ImGui_ImplMetal4_DestroyDeviceObjects();
+    ImGui_ImplMetal4_DestroyBackendData();
+
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
+    platform_io.ClearRendererHandlers();
+}
+
+@implementation MetalBuffer
+- (instancetype)initWithBuffer:(id<MTLBuffer>)buffer
+{
+    if ((self = [super init]))
+    {
+        _buffer = buffer;
+        _lastReuseTime = GetMachAbsoluteTimeInSeconds();
+    }
+    return self;
+}
+@end
+
+#pragma mark - FramebufferDescriptor implementation
+
+@implementation FramebufferDescriptor
+- (instancetype)initWithRenderPassDescriptor:(MTL4RenderPassDescriptor*)renderPassDescriptor
+{
+    if ((self = [super init]))
+    {
+        _sampleCount = renderPassDescriptor.colorAttachments[0].texture.sampleCount;
+        _colorPixelFormat = renderPassDescriptor.colorAttachments[0].texture.pixelFormat;
+        _depthPixelFormat = renderPassDescriptor.depthAttachment.texture.pixelFormat;
+        _stencilPixelFormat = renderPassDescriptor.stencilAttachment.texture.pixelFormat;
+    }
+    return self;
+}
+
+- (nonnull id)copyWithZone:(nullable NSZone*)zone
+{
+    FramebufferDescriptor* copy = [[FramebufferDescriptor allocWithZone:zone] init];
+    copy.sampleCount = self.sampleCount;
+    copy.colorPixelFormat = self.colorPixelFormat;
+    copy.depthPixelFormat = self.depthPixelFormat;
+    copy.stencilPixelFormat = self.stencilPixelFormat;
+    return copy;
+}
+
+- (NSUInteger)hash
+{
+    NSUInteger sc = _sampleCount & 0x3;
+    NSUInteger cf = _colorPixelFormat & 0x3FF;
+    NSUInteger df = _depthPixelFormat & 0x3FF;
+    NSUInteger sf = _stencilPixelFormat & 0x3FF;
+    NSUInteger hash = (sf << 22) | (df << 12) | (cf << 2) | sc;
+    return hash;
+}
+
+- (BOOL)isEqual:(id)object
+{
+    FramebufferDescriptor* other = object;
+    if (![other isKindOfClass:[FramebufferDescriptor class]])
+        return NO;
+    return other.sampleCount == self.sampleCount      &&
+    other.colorPixelFormat   == self.colorPixelFormat &&
+    other.depthPixelFormat   == self.depthPixelFormat &&
+    other.stencilPixelFormat == self.stencilPixelFormat;
+}
+
+@end
+
+#pragma mark - MetalTexture implementation
+
+@implementation MetalTexture
+- (instancetype)initWithTexture:(id<MTLTexture>)metalTexture
+{
+    if ((self = [super init]))
+        self.metalTexture = metalTexture;
+    return self;
+}
+
+@end
+
+#pragma mark - MetalContext implementation
+
+@implementation MetalContext
+- (instancetype)init
+{
+    if ((self = [super init]))
+    {
+        self.renderPipelineStateCache = [NSMutableDictionary dictionary];
+        self.bufferCacheLock = [[NSObject alloc] init];
+        _lastBufferCachePurge = GetMachAbsoluteTimeInSeconds();
+    }
+    return self;
+}
+
+- (void)dealloc
+{
+    free(_constantBufferContentsArray);
+}
+
+- (id<MTLBuffer>)currentConstantBuffer
+{
+    return self.constantBuffers[self.currentFrameSlot];
+}
+
+- (ImGui_Metal4_ConstantData*)currentConstantBufferContents
+{
+    return self.constantBufferContentsArray[self.currentFrameSlot];
+}
+
+- (MetalBuffer*)dequeueReusableBufferOfLength:(NSUInteger)length device:(id<MTLDevice>)device
+{
+    double now = GetMachAbsoluteTimeInSeconds();
+    NSMutableArray<MetalBuffer*>* slotCache = self.bufferCaches[self.currentFrameSlot];
+
+    @synchronized(self.bufferCacheLock)
+    {
+        // Purge old buffers that haven't been useful for a while
+        if (now - self.lastBufferCachePurge > 1.0)
+        {
+            for (NSMutableArray<MetalBuffer*>* cache in self.bufferCaches)
+            {
+                NSMutableArray* survivors = [NSMutableArray array];
+                for (MetalBuffer* candidate in cache)
+                    if (candidate.lastReuseTime > self.lastBufferCachePurge)
+                        [survivors addObject:candidate];
+                [cache setArray:survivors];
+            }
+            self.lastBufferCachePurge = now;
+        }
+
+        // See if we have a buffer we can reuse, from this frame-in-flight slot's own cache
+        MetalBuffer* bestCandidate = nil;
+        for (MetalBuffer* candidate in slotCache)
+            if (candidate.buffer.length >= length && (bestCandidate == nil || bestCandidate.lastReuseTime > candidate.lastReuseTime))
+                bestCandidate = candidate;
+
+        if (bestCandidate != nil)
+        {
+            [slotCache removeObject:bestCandidate];
+            bestCandidate.lastReuseTime = now;
+            return bestCandidate;
+        }
+    }
+
+    // No luck; make a new buffer
+    id<MTLBuffer> backing = [device newBufferWithLength:length options:MTLResourceStorageModeShared];
+    [self.residencySet addAllocation:backing];
+    return [[MetalBuffer alloc] initWithBuffer:backing];
+}
+
+const char* shaderCode = R"(
+#include <metal_stdlib>
+using namespace metal;
+
+struct Uniforms {
+    float4x4 projectionMatrix;
+};
+
+struct VertexIn {
+    float2 position  [[attribute(0)]];
+    float2 texCoords [[attribute(1)]];
+    uchar4 color     [[attribute(2)]];
+};
+
+struct VertexOut {
+    float4 position [[position]];
+    float2 texCoords;
+    float4 color;
+};
+
+vertex VertexOut vertex_main(VertexIn in                 [[stage_in]],
+                             constant Uniforms &uniforms [[buffer(1)]])
+{
+    VertexOut out;
+    out.position = uniforms.projectionMatrix * float4(in.position, 0, 1);
+    out.texCoords = in.texCoords;
+    out.color = float4(in.color) / float4(255.0);
+    return out;
+}
+
+fragment half4 fragment_main(VertexOut in [[stage_in]],
+                             texture2d<half, access::sample> texture [[texture(0)]],
+                             sampler textureSampler [[sampler(0)]])
+{
+    half4 texColor = texture.sample(textureSampler, in.texCoords);
+    return half4(in.color) * texColor;
+}
+)";
+
+- (id<MTLRenderPipelineState>)renderPipelineStateForFramebufferDescriptor:(FramebufferDescriptor*)descriptor device:(id<MTLDevice>)device
+{
+    NSError* error = nil;
+
+    id<MTLLibrary> library = [device newLibraryWithSource:[NSString stringWithUTF8String:shaderCode] options:nil error:&error];
+    if (library == nil)
+    {
+        NSLog(@"Error: failed to create Metal library: %@", error);
+        return nil;
+    }
+
+    id<MTLFunction> vertexFunction = [library newFunctionWithName:@"vertex_main"];
+    id<MTLFunction> fragmentFunction = [library newFunctionWithName:@"fragment_main"];
+
+    if (vertexFunction == nil || fragmentFunction == nil)
+    {
+        NSLog(@"Error: failed to find Metal shader functions in library: %@", error);
+        return nil;
+    }
+
+    MTLVertexDescriptor* vertexDescriptor = [MTLVertexDescriptor vertexDescriptor];
+    vertexDescriptor.attributes[0].offset = offsetof(ImDrawVert, pos);
+    vertexDescriptor.attributes[0].format = MTLVertexFormatFloat2; // position
+    vertexDescriptor.attributes[0].bufferIndex = 0;
+    vertexDescriptor.attributes[1].offset = offsetof(ImDrawVert, uv);
+    vertexDescriptor.attributes[1].format = MTLVertexFormatFloat2; // texCoords
+    vertexDescriptor.attributes[1].bufferIndex = 0;
+    vertexDescriptor.attributes[2].offset = offsetof(ImDrawVert, col);
+    vertexDescriptor.attributes[2].format = MTLVertexFormatUChar4; // color
+    vertexDescriptor.attributes[2].bufferIndex = 0;
+    vertexDescriptor.layouts[0].stepRate = 1;
+    vertexDescriptor.layouts[0].stepFunction = MTLVertexStepFunctionPerVertex;
+    vertexDescriptor.layouts[0].stride = sizeof(ImDrawVert);
+
+    MTLRenderPipelineDescriptor* pipelineDescriptor = [[MTLRenderPipelineDescriptor alloc] init];
+    pipelineDescriptor.vertexFunction = vertexFunction;
+    pipelineDescriptor.fragmentFunction = fragmentFunction;
+    pipelineDescriptor.vertexDescriptor = vertexDescriptor;
+    pipelineDescriptor.rasterSampleCount = self.framebufferDescriptor.sampleCount;
+    pipelineDescriptor.colorAttachments[0].pixelFormat = self.framebufferDescriptor.colorPixelFormat;
+    pipelineDescriptor.colorAttachments[0].blendingEnabled = YES;
+    pipelineDescriptor.colorAttachments[0].rgbBlendOperation = MTLBlendOperationAdd;
+    pipelineDescriptor.colorAttachments[0].sourceRGBBlendFactor = MTLBlendFactorSourceAlpha;
+    pipelineDescriptor.colorAttachments[0].destinationRGBBlendFactor = MTLBlendFactorOneMinusSourceAlpha;
+    pipelineDescriptor.colorAttachments[0].alphaBlendOperation = MTLBlendOperationAdd;
+    pipelineDescriptor.colorAttachments[0].sourceAlphaBlendFactor = MTLBlendFactorOne;
+    pipelineDescriptor.colorAttachments[0].destinationAlphaBlendFactor = MTLBlendFactorOneMinusSourceAlpha;
+    pipelineDescriptor.depthAttachmentPixelFormat = self.framebufferDescriptor.depthPixelFormat;
+    pipelineDescriptor.stencilAttachmentPixelFormat = self.framebufferDescriptor.stencilPixelFormat;
+
+    id<MTLRenderPipelineState> renderPipelineState = [device newRenderPipelineStateWithDescriptor:pipelineDescriptor error:&error];
+    if (error != nil)
+        NSLog(@"Error: failed to create Metal pipeline state: %@", error);
+
+    return renderPipelineState;
+}
+
+@end
+
+//-----------------------------------------------------------------------------
+
+#endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_opengl2.cpp

@@ -6,6 +6,7 @@
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
 // Missing features or Issues:
 //  [ ] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
+//  [ ] Renderer: Use of DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest is emulated by poking to glTexParameter(), as legacy OpenGL doesn't have glBindSampler().
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -25,6 +26,10 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-09-17: OpenGL: Added support for platform_io.DrawCallback_SetSamplerFromTex. (#9378)
+//  2026-09-07: OpenGL: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-07-15: OpenGL: Backup and restore GL_UNPACK_ROW_LENGTH and GL_UNPACK_ALIGNMENT in UpdateTexture() to avoid corrupting caller GL state. (#8802, #9473)
+//  2026-04-23: OpenGL: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
 //  2026-03-12: OpenGL: Fixed invalid assert in ImGui_ImplOpenGL3_UpdateTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295)
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-07-15: OpenGL: Set GL_UNPACK_ALIGNMENT to 1 before updating textures. (#8802)
@@ -86,6 +91,9 @@
 // OpenGL data
 struct ImGui_ImplOpenGL2_Data
 {
+    bool        UseTexParameterToSetSampler;
+    GLuint      NextSampler;
+
     ImGui_ImplOpenGL2_Data() { memset((void*)this, 0, sizeof(*this)); }
 };
 
@@ -97,37 +105,6 @@ static ImGui_ImplOpenGL2_Data* ImGui_ImplOpenGL2_GetBackendData()
 }
 
 // Functions
-bool    ImGui_ImplOpenGL2_Init()
-{
-    ImGuiIO& io = ImGui::GetIO();
-    IMGUI_CHECKVERSION();
-    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
-
-    // Setup backend capabilities flags
-    ImGui_ImplOpenGL2_Data* bd = IM_NEW(ImGui_ImplOpenGL2_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_opengl2";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;       // We can honor ImGuiPlatformIO::Textures[] requests during render.
-
-    return true;
-}
-
-void    ImGui_ImplOpenGL2_Shutdown()
-{
-    ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-
-    ImGui_ImplOpenGL2_DestroyDeviceObjects();
-
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasTextures);
-    platform_io.ClearRendererHandlers();
-    IM_DELETE(bd);
-}
-
 void    ImGui_ImplOpenGL2_NewFrame()
 {
     ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
@@ -138,6 +115,7 @@ void    ImGui_ImplOpenGL2_NewFrame()
 static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height)
 {
     // Setup render state: alpha-blending enabled, no face culling, no depth testing, scissor enabled, vertex/texcoord/color pointers, polygon fill.
+    ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
     //glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_ONE, GL_ONE_MINUS_SRC_ALPHA); // In order to composite our output buffer we need to preserve alpha
@@ -156,6 +134,9 @@ static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_wid
     glShadeModel(GL_SMOOTH);
     glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 
+    bd->UseTexParameterToSetSampler = false;
+    bd->NextSampler = GL_LINEAR;
+
     // If you are using this code with non-legacy OpenGL header/contexts (which you should not, prefer using imgui_impl_opengl3.cpp!!),
     // you may need to backup/reset/restore other state, e.g. for current shader using the commented lines below.
     // (DO NOT MODIFY THIS FILE! Add the code in your calling function)
@@ -179,14 +160,24 @@ static void ImGui_ImplOpenGL2_SetupRenderState(ImDrawData* draw_data, int fb_wid
     glLoadIdentity();
 }
 
+// Draw callbacks
+// - IMPORTANT: Using DrawCallback_SetSamplerLinear/DrawCallback_SetSamplerNearest will trash glTexParameteri() values for the texture!!
+//   We cannot decently backup/restore that state because glGetTexParameteriv() is slow on many setups.
+// - Using DrawCallback_SetSamplerFromTex will basically instruct the backend to use existing glTexParameteri() values without modifying anything, which is the initial state.
+static void ImGui_ImplOpenGL2_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)  {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplOpenGL2_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData(); bd->UseTexParameterToSetSampler = true; bd->NextSampler = GL_LINEAR; }
+static void ImGui_ImplOpenGL2_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData(); bd->UseTexParameterToSetSampler = true; bd->NextSampler = GL_NEAREST; }
+static void ImGui_ImplOpenGL2_DrawCallback_SetSamplerFromTex(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData(); bd->UseTexParameterToSetSampler = false; }
+
 // OpenGL2 Render function.
 // Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly.
 // This is in order to be able to run within an OpenGL engine that doesn't do so.
 void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
 {
     // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     if (fb_width == 0 || fb_height == 0)
         return;
 
@@ -228,8 +219,7 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
             if (pcmd->UserCallback)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplOpenGL2_DrawCallback_ResetRenderState)
                     ImGui_ImplOpenGL2_SetupRenderState(draw_data, fb_width, fb_height);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -246,7 +236,17 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
                 glScissor((int)clip_min.x, (int)((float)fb_height - clip_max.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y));
 
                 // Bind texture, Draw
-                glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID());
+                GLuint pcmd_texture = (GLuint)(intptr_t)pcmd->GetTexID();
+                glBindTexture(GL_TEXTURE_2D, pcmd_texture);
+
+                // Emulate sampler change (even though it is technically part of texture data)
+                // As a sort of hack/workaround, we only start writing using glTextParameter() if sampler is ever changed explicitly.
+                if (bd->UseTexParameterToSetSampler)
+                {
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, bd->NextSampler);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, bd->NextSampler);
+                }
+
                 glDrawElements(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, idx_buffer + pcmd->IdxOffset);
             }
         }
@@ -271,6 +271,10 @@ void ImGui_ImplOpenGL2_RenderDrawData(ImDrawData* draw_data)
 
 void ImGui_ImplOpenGL2_UpdateTexture(ImTextureData* tex)
 {
+    // Backup GL_UNPACK state that we modify, restore on exit.
+    GLint last_unpack_row_length = 0; GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &last_unpack_row_length));
+    GLint last_unpack_alignment = 0; GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &last_unpack_alignment));
+
     if (tex->Status == ImTextureStatus_WantCreate)
     {
         // Create and upload new texture to graphics system
@@ -280,8 +284,7 @@ void ImGui_ImplOpenGL2_UpdateTexture(ImTextureData* tex)
         const void* pixels = tex->GetPixels();
         GLuint gl_texture_id = 0;
 
-        // Upload texture to graphics system
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Upload texture to graphics system (bilinear sampling is required).
         GLint last_texture;
         GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
         GL_CALL(glGenTextures(1, &gl_texture_id));
@@ -327,6 +330,10 @@ void ImGui_ImplOpenGL2_UpdateTexture(ImTextureData* tex)
         tex->SetTexID(ImTextureID_Invalid);
         tex->SetStatus(ImTextureStatus_Destroyed);
     }
+
+    // Restore GL_UNPACK state
+    GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, last_unpack_row_length));
+    GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, last_unpack_alignment));
 }
 
 bool    ImGui_ImplOpenGL2_CreateDeviceObjects()
@@ -344,6 +351,43 @@ void    ImGui_ImplOpenGL2_DestroyDeviceObjects()
         }
 }
 
+bool    ImGui_ImplOpenGL2_Init()
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+
+    // Setup backend capabilities flags
+    ImGui_ImplOpenGL2_Data* bd = IM_NEW(ImGui_ImplOpenGL2_Data)();
+    io.BackendRendererUserData = (void*)bd;
+    io.BackendRendererName = "imgui_impl_opengl2";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;       // We can honor ImGuiPlatformIO::Textures[] requests during render.
+
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplOpenGL2_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplOpenGL2_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplOpenGL2_DrawCallback_SetSamplerNearest;
+    platform_io.DrawCallback_SetSamplerFromTex = ImGui_ImplOpenGL2_DrawCallback_SetSamplerFromTex;
+
+    return true;
+}
+
+void    ImGui_ImplOpenGL2_Shutdown()
+{
+    ImGui_ImplOpenGL2_Data* bd = ImGui_ImplOpenGL2_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+
+    ImGui_ImplOpenGL2_DestroyDeviceObjects();
+
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasTextures);
+    platform_io.ClearRendererHandlers();
+    IM_DELETE(bd);
+}
+
 //-----------------------------------------------------------------------------
 
 #if defined(__clang__)

backends/imgui_impl_opengl2.h

@@ -6,6 +6,7 @@
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
 // Missing features or Issues:
 //  [ ] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
+//  [ ] Renderer: Use of DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest is emulated by poking to glTexParameter(), as legacy OpenGL doesn't have glBindSampler().
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.

backends/imgui_impl_opengl3.cpp

@@ -7,6 +7,7 @@
 //  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [x] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset) [Desktop OpenGL only!]
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplOpenGL3_GetRenderState().
 
 // About WebGL/ES:
 // - You need to '#define IMGUI_IMPL_OPENGL_ES2' or '#define IMGUI_IMPL_OPENGL_ES3' to use WebGL or OpenGL ES.
@@ -23,6 +24,13 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-09-17: OpenGL: Added support for platform_io.DrawCallback_SetSamplerFromTex. (#9378)
+//  2026-09-07: OpenGL: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-07-15: OpenGL: Backup and restore GL_UNPACK_ROW_LENGTH and GL_UNPACK_ALIGNMENT in UpdateTexture() to avoid corrupting caller GL state. (#8802, #9473)
+//  2026-06-17: OpenGL: Expose selected render state in ImGui_ImplOpenGL3_RenderState, Allowing to dynamically select between use of glBindSampler() and glTexParameter(). You can access in 'void* platform_io.Renderer_RenderState' during rendering.
+//  2026-06-03: OpenGL: GLSL version detection assume GLSL 410 when GL context is 4.1. Fixes an issue running on macOS with Wine. (#9427, #6577)
+//  2026-04-23: OpenGL: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
+//                      (Breaking): this change prioritize using glBindSampler() when available, which would override glTexParameter() settings you may have set on custom textures.
 //  2026-03-12: OpenGL: Fixed invalid assert in ImGui_ImplOpenGL3_UpdateTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295)
 //  2025-12-11: OpenGL: Fixed embedded loader multiple init/shutdown cycles broken on some platforms. (#8792, #9112)
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
@@ -252,6 +260,10 @@ struct ImGui_ImplOpenGL3_Data
     bool            HasBindSampler;
     bool            HasClipOrigin;
     bool            UseBufferSubData;
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
+    GLuint          TexSamplers[2];         // Used if HasBindSimpler. (0=linear, 1=nearest)
+#endif
+
     ImVector<char>  TempBuffer;
 
     ImGui_ImplOpenGL3_Data() { memset((void*)this, 0, sizeof(*this)); }
@@ -264,6 +276,11 @@ static ImGui_ImplOpenGL3_Data* ImGui_ImplOpenGL3_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplOpenGL3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplOpenGL3_RenderState* ImGui_ImplOpenGL3_GetRenderState()
+{
+    return (ImGui_ImplOpenGL3_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
 // OpenGL vertex attribute state (for ES 1.0 and ES 2.0 only)
 #ifndef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
 struct ImGui_ImplOpenGL3_VtxAttribState
@@ -312,139 +329,6 @@ static void ImGui_ImplOpenGL3_ShutdownLoader()
 }
 
 // Functions
-bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
-{
-    ImGuiIO& io = ImGui::GetIO();
-    IMGUI_CHECKVERSION();
-    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
-
-    // Initialize loader
-    if (!ImGui_ImplOpenGL3_InitLoader())
-        return false;
-
-    // Setup backend capabilities flags
-    ImGui_ImplOpenGL3_Data* bd = IM_NEW(ImGui_ImplOpenGL3_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_opengl3";
-
-    // Query for GL version (e.g. 320 for GL 3.2)
-    const char* gl_version_str = (const char*)glGetString(GL_VERSION);
-#if defined(IMGUI_IMPL_OPENGL_ES2)
-    // GLES 2
-    bd->GlVersion = 200;
-    bd->GlProfileIsES2 = true;
-    IM_UNUSED(gl_version_str);
-#else
-    // Desktop or GLES 3
-    GLint major = 0;
-    GLint minor = 0;
-    glGetIntegerv(GL_MAJOR_VERSION, &major);
-    glGetIntegerv(GL_MINOR_VERSION, &minor);
-    if (major == 0 && minor == 0)
-        sscanf(gl_version_str, "%d.%d", &major, &minor); // Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
-    bd->GlVersion = (GLuint)(major * 100 + minor * 10);
-    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &bd->MaxTextureSize);
-
-#if defined(IMGUI_IMPL_OPENGL_ES3)
-    bd->GlProfileIsES3 = true;
-#else
-    if (strncmp(gl_version_str, "OpenGL ES 3", 11) == 0)
-        bd->GlProfileIsES3 = true;
-#endif
-
-#if defined(GL_CONTEXT_PROFILE_MASK)
-    if (!bd->GlProfileIsES3 && bd->GlVersion >= 320)
-        glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &bd->GlProfileMask);
-    bd->GlProfileIsCompat = (bd->GlProfileMask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT) != 0;
-#endif
-
-    bd->UseBufferSubData = false;
-    /*
-    // Query vendor to enable glBufferSubData kludge
-#ifdef _WIN32
-    if (const char* vendor = (const char*)glGetString(GL_VENDOR))
-        if (strncmp(vendor, "Intel", 5) == 0)
-            bd->UseBufferSubData = true;
-#endif
-    */
-#endif
-
-#ifdef IMGUI_IMPL_OPENGL_DEBUG
-    printf("GlVersion = %d, \"%s\"\nGlProfileIsCompat = %d\nGlProfileMask = 0x%X\nGlProfileIsES2/IsEs3 = %d/%d\nGL_VENDOR = '%s'\nGL_RENDERER = '%s'\n", bd->GlVersion, gl_version_str, bd->GlProfileIsCompat, bd->GlProfileMask, bd->GlProfileIsES2, bd->GlProfileIsES3, (const char*)glGetString(GL_VENDOR), (const char*)glGetString(GL_RENDERER)); // [DEBUG]
-#endif
-
-#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
-    if (bd->GlVersion >= 320)
-        io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
-#endif
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;       // We can honor ImGuiPlatformIO::Textures[] requests during render.
-
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-    platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = (int)bd->MaxTextureSize;
-
-    // Store GLSL version string so we can refer to it later in case we recreate shaders.
-    // Note: GLSL version is NOT the same as GL version. Leave this to nullptr if unsure.
-    if (glsl_version == nullptr)
-    {
-#if defined(IMGUI_IMPL_OPENGL_ES2)
-        glsl_version = "#version 100";
-#elif defined(IMGUI_IMPL_OPENGL_ES3)
-        glsl_version = "#version 300 es";
-#elif defined(__APPLE__)
-        glsl_version = "#version 150";
-#else
-        glsl_version = "#version 130";
-#endif
-    }
-    IM_ASSERT((int)strlen(glsl_version) + 2 < IM_COUNTOF(bd->GlslVersionString));
-    strcpy(bd->GlslVersionString, glsl_version);
-    strcat(bd->GlslVersionString, "\n");
-
-    // Make an arbitrary GL call (we don't actually need the result)
-    // IF YOU GET A CRASH HERE: it probably means the OpenGL function loader didn't do its job. Let us know!
-    GLint current_texture;
-    glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_texture);
-
-    // Detect extensions we support
-#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE
-    bd->HasPolygonMode = (!bd->GlProfileIsES2 && !bd->GlProfileIsES3);
-#endif
-#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
-    bd->HasBindSampler = (bd->GlVersion >= 330 || bd->GlProfileIsES3);
-#endif
-    bd->HasClipOrigin = (bd->GlVersion >= 450);
-#ifdef IMGUI_IMPL_OPENGL_HAS_EXTENSIONS
-    GLint num_extensions = 0;
-    glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
-    for (GLint i = 0; i < num_extensions; i++)
-    {
-        const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
-        if (extension != nullptr && strcmp(extension, "GL_ARB_clip_control") == 0)
-            bd->HasClipOrigin = true;
-    }
-#endif
-
-    return true;
-}
-
-void    ImGui_ImplOpenGL3_Shutdown()
-{
-    ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-
-    ImGui_ImplOpenGL3_DestroyDeviceObjects();
-
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
-    platform_io.ClearRendererHandlers();
-    IM_DELETE(bd);
-
-    ImGui_ImplOpenGL3_ShutdownLoader();
-}
-
 void    ImGui_ImplOpenGL3_NewFrame()
 {
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
@@ -456,7 +340,7 @@ void    ImGui_ImplOpenGL3_NewFrame()
             IM_ASSERT(0 && "ImGui_ImplOpenGL3_CreateDeviceObjects() failed!");
 }
 
-static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_width, int fb_height, GLuint vertex_array_object)
+static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, ImGui_ImplOpenGL3_RenderState* render_state, int fb_width, int fb_height, GLuint vertex_array_object)
 {
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
 
@@ -509,9 +393,16 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
     glUniform1i(bd->AttribLocationTex, 0);
     glUniformMatrix4fv(bd->AttribLocationProjMtx, 1, GL_FALSE, &ortho_projection[0][0]);
 
+    render_state->UseBindSampler = bd->HasBindSampler;
+    render_state->UseTexParameterFilter = false;
+    render_state->CurrentSampler = 0;
+    render_state->CurrentTexParameterFilter = 0;
 #ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
-    if (bd->HasBindSampler)
-        glBindSampler(0, 0); // We use combined texture/sampler state. Applications using GL 3.3 and GL ES 3.0 may set that otherwise.
+    if (bd->HasBindSampler && render_state->UseBindSampler)
+    {
+        render_state->CurrentSampler = bd->TexSamplers[0];
+        glBindSampler(0, render_state->CurrentSampler); // We use combined texture/sampler state. Applications using GL 3.3 and GL ES 3.0 may set that otherwise.
+    }
 #endif
 
     (void)vertex_array_object;
@@ -530,14 +421,56 @@ static void ImGui_ImplOpenGL3_SetupRenderState(ImDrawData* draw_data, int fb_wid
     GL_CALL(glVertexAttribPointer(bd->AttribLocationVtxColor, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(ImDrawVert), (GLvoid*)offsetof(ImDrawVert, col)));
 }
 
+static void ImGui_ImplOpenGL3_DrawCallback_SetSampler(unsigned int sampler_idx, unsigned int tex_parameter_filter)
+{
+    ImGui_ImplOpenGL3_RenderState* render_state = ImGui_ImplOpenGL3_GetRenderState();
+    IM_UNUSED(sampler_idx);
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
+    ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
+    if (bd->HasBindSampler && render_state->UseBindSampler)
+    {
+        render_state->CurrentSampler = bd->TexSamplers[sampler_idx];
+        render_state->UseTexParameterFilter = false;
+        glBindSampler(0, render_state->CurrentSampler);
+    }
+    else
+#endif
+    {
+        render_state->UseTexParameterFilter = true;
+        render_state->CurrentTexParameterFilter = tex_parameter_filter;
+    }
+}
+
+// Draw callbacks
+// - IMPORTANT: Using DrawCallback_SetSamplerLinear/DrawCallback_SetSamplerNearest will trash glTexParameteri() values for the texture if used on a GL context not supporting glBindSampler()!!
+//   We cannot decently backup/restore that state because glGetTexParameteriv() is slow on many setups.
+// - Using DrawCallback_SetSamplerFromTex will basically instruct the backend to use existing glTexParameteri() values without modifying anything.
+static void ImGui_ImplOpenGL3_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)  {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplOpenGL3_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplOpenGL3_DrawCallback_SetSampler(0, GL_LINEAR); }
+static void ImGui_ImplOpenGL3_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*) { ImGui_ImplOpenGL3_DrawCallback_SetSampler(1, GL_NEAREST); }
+static void ImGui_ImplOpenGL3_DrawCallback_SetSamplerFromTex(const ImDrawList*, const ImDrawCmd*)
+{
+    ImGui_ImplOpenGL3_RenderState* render_state = ImGui_ImplOpenGL3_GetRenderState();
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
+    ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
+    if (bd->HasBindSampler)
+    {
+        render_state->CurrentSampler = 0;
+        glBindSampler(0, 0);
+    }
+#endif
+    render_state->UseBindSampler = false;
+    render_state->UseTexParameterFilter = false;
+}
+
 // OpenGL3 Render function.
 // Note that this implementation is little overcomplicated because we are saving/setting up/restoring every OpenGL state explicitly.
 // This is in order to be able to run within an OpenGL engine that doesn't do so.
 void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
 {
     // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     if (fb_width <= 0 || fb_height <= 0)
         return;
 
@@ -598,7 +531,13 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
 #ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
     GL_CALL(glGenVertexArrays(1, &vertex_array_object));
 #endif
-    ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
+
+    // Setup render state structure (for callbacks and custom texture bindings)
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    ImGui_ImplOpenGL3_RenderState render_state = {};
+    platform_io.Renderer_RenderState = &render_state;
+
+    ImGui_ImplOpenGL3_SetupRenderState(draw_data, &render_state, fb_width, fb_height, vertex_array_object);
 
     // Will project scissor/clipping rectangles into framebuffer space
     ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
@@ -644,9 +583,8 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
             if (pcmd->UserCallback != nullptr)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
-                    ImGui_ImplOpenGL3_SetupRenderState(draw_data, fb_width, fb_height, vertex_array_object);
+                if (pcmd->UserCallback == ImGui_ImplOpenGL3_DrawCallback_ResetRenderState)
+                    ImGui_ImplOpenGL3_SetupRenderState(draw_data, &render_state, fb_width, fb_height, vertex_array_object);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
             }
@@ -663,6 +601,15 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
 
                 // Bind texture, Draw
                 GL_CALL(glBindTexture(GL_TEXTURE_2D, (GLuint)(intptr_t)pcmd->GetTexID()));
+
+                // Emulate sampler change (even though it is technically part of texture data)
+                // As a sort of hack/workaround, we only start writing using glTexParameter() if sampler is ever changed explicitly.
+                if (render_state.UseTexParameterFilter)
+                {
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, render_state.CurrentTexParameterFilter);
+                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, render_state.CurrentTexParameterFilter);
+                }
+
 #ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
                 if (bd->GlVersion >= 320)
                     GL_CALL(glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei)pcmd->ElemCount, sizeof(ImDrawIdx) == 2 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_INT, (void*)(intptr_t)(pcmd->IdxOffset * sizeof(ImDrawIdx)), (GLint)pcmd->VtxOffset));
@@ -672,6 +619,7 @@ void    ImGui_ImplOpenGL3_RenderDrawData(ImDrawData* draw_data)
             }
         }
     }
+    platform_io.Renderer_RenderState = nullptr;
 
     // Destroy the temporary VAO
 #ifdef IMGUI_IMPL_OPENGL_USE_VERTEX_ARRAY
@@ -730,13 +678,15 @@ static void ImGui_ImplOpenGL3_DestroyTexture(ImTextureData* tex)
 
 void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex)
 {
-    // FIXME: Consider backing up and restoring
-    if (tex->Status == ImTextureStatus_WantCreate || tex->Status == ImTextureStatus_WantUpdates)
+    // Backup GL_UNPACK state that we modify, restore on exit.
+    GLint last_unpack_row_length = 0; (void)last_unpack_row_length;
+    GLint last_unpack_alignment = 0; (void)last_unpack_alignment;
+    const bool last_unpack_state_save_and_restore = (tex->Status == ImTextureStatus_WantCreate || tex->Status == ImTextureStatus_WantUpdates);
+    if (last_unpack_state_save_and_restore)
     {
 #ifdef GL_UNPACK_ROW_LENGTH // Not on WebGL/ES
-        GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0));
-#endif
-#ifdef GL_UNPACK_ALIGNMENT
+        GL_CALL(glGetIntegerv(GL_UNPACK_ROW_LENGTH, &last_unpack_row_length));
+        GL_CALL(glGetIntegerv(GL_UNPACK_ALIGNMENT, &last_unpack_alignment));
         GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, 1));
 #endif
     }
@@ -750,8 +700,7 @@ void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex)
         const void* pixels = tex->GetPixels();
         GLuint gl_texture_id = 0;
 
-        // Upload texture to graphics system
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Upload texture to graphics system (bilinear sampling is required).
         GLint last_texture;
         GL_CALL(glGetIntegerv(GL_TEXTURE_BINDING_2D, &last_texture));
         GL_CALL(glGenTextures(1, &gl_texture_id));
@@ -760,6 +709,9 @@ void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex)
         GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
         GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
         GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
+#if GL_UNPACK_ROW_LENGTH // Not on WebGL/ES
+        GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0));
+#endif
         GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex->Width, tex->Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, pixels));
 
         // Store identifiers
@@ -782,7 +734,6 @@ void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex)
         GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, tex->Width));
         for (ImTextureRect& r : tex->Updates)
             GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, r.x, r.y, r.w, r.h, GL_RGBA, GL_UNSIGNED_BYTE, tex->GetPixelsAt(r.x, r.y)));
-        GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, 0));
 #else
         // GL ES doesn't have GL_UNPACK_ROW_LENGTH, so we need to (A) copy to a contiguous buffer or (B) upload line by line.
         ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
@@ -802,6 +753,15 @@ void ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex)
     }
     else if (tex->Status == ImTextureStatus_WantDestroy && tex->UnusedFrames > 0)
         ImGui_ImplOpenGL3_DestroyTexture(tex);
+
+    // Restore GL_UNPACK state
+    if (last_unpack_state_save_and_restore)
+    {
+#ifdef GL_UNPACK_ROW_LENGTH
+        GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH, last_unpack_row_length));
+        GL_CALL(glPixelStorei(GL_UNPACK_ALIGNMENT, last_unpack_alignment));
+#endif
+    }
 }
 
 // If you get an error please report on github. You may try different GL context version or GLSL version. See GL<>GLSL version table at the top of this file.
@@ -1028,6 +988,20 @@ bool    ImGui_ImplOpenGL3_CreateDeviceObjects()
     glGenBuffers(1, &bd->VboHandle);
     glGenBuffers(1, &bd->ElementsHandle);
 
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
+    if (bd->HasBindSampler)
+    {
+        glGenSamplers(2, &bd->TexSamplers[0]);
+        for (int sampler_n = 0; sampler_n < 2; sampler_n++)
+        {
+            GL_CALL(glSamplerParameteri(bd->TexSamplers[sampler_n], GL_TEXTURE_MIN_FILTER, (sampler_n == 0) ? GL_LINEAR : GL_NEAREST));
+            GL_CALL(glSamplerParameteri(bd->TexSamplers[sampler_n], GL_TEXTURE_MAG_FILTER, (sampler_n == 0) ? GL_LINEAR : GL_NEAREST));
+            GL_CALL(glSamplerParameteri(bd->TexSamplers[sampler_n], GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE));
+            GL_CALL(glSamplerParameteri(bd->TexSamplers[sampler_n], GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE));
+        }
+    }
+#endif
+
     // Restore modified GL state
     glBindTexture(GL_TEXTURE_2D, last_texture);
     glBindBuffer(GL_ARRAY_BUFFER, last_array_buffer);
@@ -1045,6 +1019,9 @@ void    ImGui_ImplOpenGL3_DestroyDeviceObjects()
 {
     ImGui_ImplOpenGL3_InitLoader();
     ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
+    if (bd->TexSamplers[0]) { glDeleteSamplers(2, &bd->TexSamplers[0]); bd->TexSamplers[0] = bd->TexSamplers[1] = 0; }
+#endif
     if (bd->VboHandle)      { glDeleteBuffers(1, &bd->VboHandle); bd->VboHandle = 0; }
     if (bd->ElementsHandle) { glDeleteBuffers(1, &bd->ElementsHandle); bd->ElementsHandle = 0; }
     if (bd->ShaderHandle)   { glDeleteProgram(bd->ShaderHandle); bd->ShaderHandle = 0; }
@@ -1055,6 +1032,146 @@ void    ImGui_ImplOpenGL3_DestroyDeviceObjects()
             ImGui_ImplOpenGL3_DestroyTexture(tex);
 }
 
+bool    ImGui_ImplOpenGL3_Init(const char* glsl_version)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+
+    // Initialize loader
+    if (!ImGui_ImplOpenGL3_InitLoader())
+        return false;
+
+    // Setup backend capabilities flags
+    ImGui_ImplOpenGL3_Data* bd = IM_NEW(ImGui_ImplOpenGL3_Data)();
+    io.BackendRendererUserData = (void*)bd;
+    io.BackendRendererName = "imgui_impl_opengl3";
+
+    // Query for GL version (e.g. 320 for GL 3.2)
+    const char* gl_version_str = (const char*)glGetString(GL_VERSION);
+#if defined(IMGUI_IMPL_OPENGL_ES2)
+    // GLES 2
+    bd->GlVersion = 200;
+    bd->GlProfileIsES2 = true;
+    IM_UNUSED(gl_version_str);
+#else
+    // Desktop or GLES 3
+    GLint major = 0;
+    GLint minor = 0;
+    glGetIntegerv(GL_MAJOR_VERSION, &major);
+    glGetIntegerv(GL_MINOR_VERSION, &minor);
+    if (major == 0 && minor == 0)
+        sscanf(gl_version_str, "%d.%d", &major, &minor); // Query GL_VERSION in desktop GL 2.x, the string will start with "<major>.<minor>"
+    bd->GlVersion = (GLuint)(major * 100 + minor * 10);
+    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &bd->MaxTextureSize);
+
+#if defined(IMGUI_IMPL_OPENGL_ES3)
+    bd->GlProfileIsES3 = true;
+#else
+    if (strncmp(gl_version_str, "OpenGL ES 3", 11) == 0)
+        bd->GlProfileIsES3 = true;
+#endif
+
+#if defined(GL_CONTEXT_PROFILE_MASK)
+    if (!bd->GlProfileIsES3 && bd->GlVersion >= 320)
+        glGetIntegerv(GL_CONTEXT_PROFILE_MASK, &bd->GlProfileMask);
+    bd->GlProfileIsCompat = (bd->GlProfileMask & GL_CONTEXT_COMPATIBILITY_PROFILE_BIT) != 0;
+#endif
+
+    bd->UseBufferSubData = false;
+    /*
+    // Query vendor to enable glBufferSubData kludge
+#ifdef _WIN32
+    if (const char* vendor = (const char*)glGetString(GL_VENDOR))
+        if (strncmp(vendor, "Intel", 5) == 0)
+            bd->UseBufferSubData = true;
+#endif
+    */
+#endif
+
+#ifdef IMGUI_IMPL_OPENGL_DEBUG
+    printf("GlVersion = %d, \"%s\"\nGlProfileIsCompat = %d\nGlProfileMask = 0x%X\nGlProfileIsES2/IsEs3 = %d/%d\nGL_VENDOR = '%s'\nGL_RENDERER = '%s'\n", bd->GlVersion, gl_version_str, bd->GlProfileIsCompat, bd->GlProfileMask, bd->GlProfileIsES2, bd->GlProfileIsES3, (const char*)glGetString(GL_VENDOR), (const char*)glGetString(GL_RENDERER)); // [DEBUG]
+#endif
+
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_VTX_OFFSET
+    if (bd->GlVersion >= 320)
+        io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+#endif
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;       // We can honor ImGuiPlatformIO::Textures[] requests during render.
+
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = (int)bd->MaxTextureSize;
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplOpenGL3_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplOpenGL3_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplOpenGL3_DrawCallback_SetSamplerNearest;
+    platform_io.DrawCallback_SetSamplerFromTex = ImGui_ImplOpenGL3_DrawCallback_SetSamplerFromTex;
+
+    // Store GLSL version string so we can refer to it later in case we recreate shaders.
+    // Note: GLSL version is NOT the same as GL version. Leave this to nullptr if unsure.
+    if (glsl_version == nullptr)
+    {
+#if defined(IMGUI_IMPL_OPENGL_ES2)
+        glsl_version = "#version 100";
+#elif defined(IMGUI_IMPL_OPENGL_ES3)
+        glsl_version = "#version 300 es";
+#elif defined(__APPLE__)
+        glsl_version = "#version 150";
+#else
+        if (bd->GlVersion >= 410)
+            glsl_version = "#version 410";
+        else
+            glsl_version = "#version 130";
+#endif
+    }
+    IM_ASSERT((int)strlen(glsl_version) + 2 < IM_COUNTOF(bd->GlslVersionString));
+    strcpy(bd->GlslVersionString, glsl_version);
+    strcat(bd->GlslVersionString, "\n");
+
+    // Make an arbitrary GL call (we don't actually need the result)
+    // IF YOU GET A CRASH HERE: it probably means the OpenGL function loader didn't do its job. Let us know!
+    GLint current_texture;
+    glGetIntegerv(GL_TEXTURE_BINDING_2D, &current_texture);
+
+    // Detect extensions we support
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_POLYGON_MODE
+    bd->HasPolygonMode = (!bd->GlProfileIsES2 && !bd->GlProfileIsES3);
+#endif
+#ifdef IMGUI_IMPL_OPENGL_MAY_HAVE_BIND_SAMPLER
+    bd->HasBindSampler = (bd->GlVersion >= 330 || bd->GlProfileIsES3);
+#endif
+    bd->HasClipOrigin = (bd->GlVersion >= 450);
+#ifdef IMGUI_IMPL_OPENGL_HAS_EXTENSIONS
+    GLint num_extensions = 0;
+    glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
+    for (GLint i = 0; i < num_extensions; i++)
+    {
+        const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
+        if (extension != nullptr && strcmp(extension, "GL_ARB_clip_control") == 0)
+            bd->HasClipOrigin = true;
+    }
+#endif
+
+    return true;
+}
+
+void    ImGui_ImplOpenGL3_Shutdown()
+{
+    ImGui_ImplOpenGL3_Data* bd = ImGui_ImplOpenGL3_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+
+    ImGui_ImplOpenGL3_DestroyDeviceObjects();
+
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
+    platform_io.ClearRendererHandlers();
+    IM_DELETE(bd);
+
+    ImGui_ImplOpenGL3_ShutdownLoader();
+}
+
 //-----------------------------------------------------------------------------
 
 #if defined(__GNUC__)

backends/imgui_impl_opengl3.h

@@ -7,6 +7,7 @@
 //  [X] Renderer: User texture binding. Use 'GLuint' OpenGL texture as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [x] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset) [Desktop OpenGL only!]
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplOpenGL3_GetRenderState().
 
 // About WebGL/ES:
 // - You need to '#define IMGUI_IMPL_OPENGL_ES2' or '#define IMGUI_IMPL_OPENGL_ES3' to use WebGL or OpenGL ES.
@@ -65,4 +66,16 @@ IMGUI_IMPL_API void     ImGui_ImplOpenGL3_UpdateTexture(ImTextureData* tex);
 
 #endif
 
+// [BETA] Selected render state data shared with callbacks.
+// This is temporarily stored in GetPlatformIO().Renderer_RenderState during the ImGui_ImplOpenGL3_RenderDrawData() call.
+// (Please open an issue if you feel you need access to more data)
+struct ImGui_ImplOpenGL3_RenderState
+{
+    bool            UseBindSampler;
+    bool            UseTexParameterFilter;
+    unsigned int    CurrentSampler;                 // (GLuint) Used if UseBindSampler == true (and are available), otherwise always 0
+    unsigned int    CurrentTexParameterFilter;      // (GLuint) Used if UseTexParameterFilter == true
+};
+IMGUI_IMPL_API ImGui_ImplOpenGL3_RenderState* ImGui_ImplOpenGL3_GetRenderState();
+
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_opengl3_loader.h

@@ -114,7 +114,7 @@ extern "C" {
 #define GLAPI extern
 #endif
 /* glcorearb.h is for use with OpenGL core profile implementations.
-** It should should be placed in the same directory as gl.h and
+** It should be placed in the same directory as gl.h and
 ** included as <GL/glcorearb.h>.
 **
 ** glcorearb.h includes only APIs in the latest OpenGL core profile

backends/imgui_impl_qnx.cpp

@@ -0,0 +1,759 @@
+// dear imgui: Platform Backend for QNX Screen
+// This needs to be used along with a Renderer Backend (e.g. OpenGL3, Vulkan).
+
+// Implemented features:
+//  [X] Platform: Keyboard support. Uses io.AddKeyEvent() and native QNX key symbols.
+//  [X] Platform: Mouse support. Handles position, three buttons and horizontal/vertical wheels.
+//  [X] Platform: Touch support. Maps the first active touch contact to the primary mouse button.
+//  [X] Platform: Focus and window-size updates.
+// Missing features or Issues:
+//  [ ] Platform: Clipboard support.
+//  [ ] Platform: Gamepad support.
+//  [ ] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors).
+//  [ ] Platform: Multi-viewport support.
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2026-08-04: Initial QNX Screen backend. (#9492)
+
+#include "imgui.h"
+#ifndef IMGUI_DISABLE
+#include "imgui_impl_qnx.h"
+
+#include <float.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/keycodes.h>
+#include <time.h>
+
+static unsigned int ImGui_ImplQNX_KeySymToUnicode(unsigned int keysym);
+
+struct ImGui_ImplQNX_Data
+{
+    screen_context_t Context;
+    screen_window_t  Window;
+    uint64_t         TimeNanoseconds;
+    int              MouseButtons;
+    int              ActiveTouchId;
+    bool             LeftSuper;
+    bool             RightSuper;
+
+    ImGui_ImplQNX_Data()
+    {
+        memset(this, 0, sizeof(*this));
+        ActiveTouchId = -1;
+    }
+};
+
+static ImGui_ImplQNX_Data* ImGui_ImplQNX_GetBackendData()
+{
+    return ImGui::GetCurrentContext() != nullptr ? (ImGui_ImplQNX_Data*)ImGui::GetIO().BackendPlatformUserData : nullptr;
+}
+
+static uint64_t ImGui_ImplQNX_GetTimeNanoseconds()
+{
+    struct timespec timestamp = {};
+    if (clock_gettime(CLOCK_MONOTONIC, &timestamp) != 0)
+    {
+        return 0;
+    }
+    return (uint64_t)timestamp.tv_sec * UINT64_C(1000000000) + (uint64_t)timestamp.tv_nsec;
+}
+
+static ImGuiKey ImGui_ImplQNX_KeyCodeToImGuiKey(int key_code)
+{
+    switch (key_code)
+    {
+        case KEYCODE_TAB:              return ImGuiKey_Tab;
+        case KEYCODE_LEFT:             return ImGuiKey_LeftArrow;
+        case KEYCODE_RIGHT:            return ImGuiKey_RightArrow;
+        case KEYCODE_UP:               return ImGuiKey_UpArrow;
+        case KEYCODE_DOWN:             return ImGuiKey_DownArrow;
+        case KEYCODE_PG_UP:            return ImGuiKey_PageUp;
+        case KEYCODE_PG_DOWN:          return ImGuiKey_PageDown;
+        case KEYCODE_HOME:             return ImGuiKey_Home;
+        case KEYCODE_END:              return ImGuiKey_End;
+        case KEYCODE_INSERT:           return ImGuiKey_Insert;
+        case KEYCODE_DELETE:           return ImGuiKey_Delete;
+        case KEYCODE_BACKSPACE:        return ImGuiKey_Backspace;
+        case KEYCODE_SPACE:            return ImGuiKey_Space;
+        case KEYCODE_RETURN:           return ImGuiKey_Enter;
+        case KEYCODE_ESCAPE:           return ImGuiKey_Escape;
+        case KEYCODE_APOSTROPHE:       return ImGuiKey_Apostrophe;
+        case KEYCODE_COMMA:            return ImGuiKey_Comma;
+        case KEYCODE_MINUS:            return ImGuiKey_Minus;
+        case KEYCODE_PERIOD:           return ImGuiKey_Period;
+        case KEYCODE_SLASH:            return ImGuiKey_Slash;
+        case KEYCODE_SEMICOLON:        return ImGuiKey_Semicolon;
+        case KEYCODE_EQUAL:            return ImGuiKey_Equal;
+        case KEYCODE_LEFT_BRACKET:     return ImGuiKey_LeftBracket;
+        case KEYCODE_BACK_SLASH:       return ImGuiKey_Backslash;
+        case KEYCODE_RIGHT_BRACKET:    return ImGuiKey_RightBracket;
+        case KEYCODE_GRAVE:            return ImGuiKey_GraveAccent;
+        case KEYCODE_CAPS_LOCK:        return ImGuiKey_CapsLock;
+        case KEYCODE_SCROLL_LOCK:      return ImGuiKey_ScrollLock;
+        case KEYCODE_NUM_LOCK:         return ImGuiKey_NumLock;
+        case KEYCODE_PRINT:            return ImGuiKey_PrintScreen;
+        case KEYCODE_PAUSE:            return ImGuiKey_Pause;
+        case KEYCODE_KP_DIVIDE:        return ImGuiKey_KeypadDivide;
+        case KEYCODE_KP_MULTIPLY:      return ImGuiKey_KeypadMultiply;
+        case KEYCODE_KP_MINUS:         return ImGuiKey_KeypadSubtract;
+        case KEYCODE_KP_PLUS:          return ImGuiKey_KeypadAdd;
+        case KEYCODE_KP_ENTER:         return ImGuiKey_KeypadEnter;
+        // QNX reports keypad digits by their navigation key-cap names.
+        case KEYCODE_KP_INSERT:        return ImGuiKey_Keypad0;
+        case KEYCODE_KP_END:           return ImGuiKey_Keypad1;
+        case KEYCODE_KP_DOWN:          return ImGuiKey_Keypad2;
+        case KEYCODE_KP_PG_DOWN:       return ImGuiKey_Keypad3;
+        case KEYCODE_KP_LEFT:          return ImGuiKey_Keypad4;
+        case KEYCODE_KP_FIVE:          return ImGuiKey_Keypad5;
+        case KEYCODE_KP_RIGHT:         return ImGuiKey_Keypad6;
+        case KEYCODE_KP_HOME:          return ImGuiKey_Keypad7;
+        case KEYCODE_KP_UP:            return ImGuiKey_Keypad8;
+        case KEYCODE_KP_PG_UP:         return ImGuiKey_Keypad9;
+        case KEYCODE_KP_DELETE:        return ImGuiKey_KeypadDecimal;
+        case KEYCODE_LEFT_CTRL:        return ImGuiKey_LeftCtrl;
+        case KEYCODE_LEFT_SHIFT:       return ImGuiKey_LeftShift;
+        case KEYCODE_LEFT_ALT:         return ImGuiKey_LeftAlt;
+        case KEYCODE_RIGHT_CTRL:       return ImGuiKey_RightCtrl;
+        case KEYCODE_RIGHT_SHIFT:      return ImGuiKey_RightShift;
+        case KEYCODE_RIGHT_ALT:        return ImGuiKey_RightAlt;
+        case KEYCODE_LEFT_HYPER:       return ImGuiKey_LeftSuper;
+        case KEYCODE_RIGHT_HYPER:      return ImGuiKey_RightSuper;
+        case KEYCODE_MENU:             return ImGuiKey_Menu;
+        case KEYCODE_ZERO:             return ImGuiKey_0;
+        case KEYCODE_ONE:              return ImGuiKey_1;
+        case KEYCODE_TWO:              return ImGuiKey_2;
+        case KEYCODE_THREE:            return ImGuiKey_3;
+        case KEYCODE_FOUR:             return ImGuiKey_4;
+        case KEYCODE_FIVE:             return ImGuiKey_5;
+        case KEYCODE_SIX:              return ImGuiKey_6;
+        case KEYCODE_SEVEN:            return ImGuiKey_7;
+        case KEYCODE_EIGHT:            return ImGuiKey_8;
+        case KEYCODE_NINE:             return ImGuiKey_9;
+        case KEYCODE_A:                return ImGuiKey_A;
+        case KEYCODE_B:                return ImGuiKey_B;
+        case KEYCODE_C:                return ImGuiKey_C;
+        case KEYCODE_D:                return ImGuiKey_D;
+        case KEYCODE_E:                return ImGuiKey_E;
+        case KEYCODE_F:                return ImGuiKey_F;
+        case KEYCODE_G:                return ImGuiKey_G;
+        case KEYCODE_H:                return ImGuiKey_H;
+        case KEYCODE_I:                return ImGuiKey_I;
+        case KEYCODE_J:                return ImGuiKey_J;
+        case KEYCODE_K:                return ImGuiKey_K;
+        case KEYCODE_L:                return ImGuiKey_L;
+        case KEYCODE_M:                return ImGuiKey_M;
+        case KEYCODE_N:                return ImGuiKey_N;
+        case KEYCODE_O:                return ImGuiKey_O;
+        case KEYCODE_P:                return ImGuiKey_P;
+        case KEYCODE_Q:                return ImGuiKey_Q;
+        case KEYCODE_R:                return ImGuiKey_R;
+        case KEYCODE_S:                return ImGuiKey_S;
+        case KEYCODE_T:                return ImGuiKey_T;
+        case KEYCODE_U:                return ImGuiKey_U;
+        case KEYCODE_V:                return ImGuiKey_V;
+        case KEYCODE_W:                return ImGuiKey_W;
+        case KEYCODE_X:                return ImGuiKey_X;
+        case KEYCODE_Y:                return ImGuiKey_Y;
+        case KEYCODE_Z:                return ImGuiKey_Z;
+        case KEYCODE_F1:               return ImGuiKey_F1;
+        case KEYCODE_F2:               return ImGuiKey_F2;
+        case KEYCODE_F3:               return ImGuiKey_F3;
+        case KEYCODE_F4:               return ImGuiKey_F4;
+        case KEYCODE_F5:               return ImGuiKey_F5;
+        case KEYCODE_F6:               return ImGuiKey_F6;
+        case KEYCODE_F7:               return ImGuiKey_F7;
+        case KEYCODE_F8:               return ImGuiKey_F8;
+        case KEYCODE_F9:               return ImGuiKey_F9;
+        case KEYCODE_F10:              return ImGuiKey_F10;
+        case KEYCODE_F11:              return ImGuiKey_F11;
+        case KEYCODE_F12:              return ImGuiKey_F12;
+        default:                       return ImGuiKey_None;
+    }
+}
+
+static void ImGui_ImplQNX_UpdateKeyModifiers(ImGuiIO& io, ImGui_ImplQNX_Data* bd, int modifiers, ImGuiKey key, bool down)
+{
+    // SCREEN_PROPERTY_MODIFIERS is the authoritative state for Shift/Ctrl/Alt.
+    // Tracking those keys locally loses sticky modifiers and can become stale if
+    // a key transition is consumed elsewhere. qterm uses this same Screen state.
+    if (key == ImGuiKey_LeftSuper)
+    {
+        bd->LeftSuper = down;
+    }
+    else if (key == ImGuiKey_RightSuper)
+    {
+        bd->RightSuper = down;
+    }
+
+    io.AddKeyEvent(ImGuiMod_Ctrl, (modifiers & KEYMOD_CTRL) != 0);
+    io.AddKeyEvent(ImGuiMod_Shift, (modifiers & KEYMOD_SHIFT) != 0);
+    io.AddKeyEvent(ImGuiMod_Alt, (modifiers & KEYMOD_ALT) != 0);
+    io.AddKeyEvent(ImGuiMod_Super, bd->LeftSuper || bd->RightSuper);
+}
+
+static void ImGui_ImplQNX_ClearModifierState(ImGuiIO& io, ImGui_ImplQNX_Data* bd)
+{
+    bd->LeftSuper = false;
+    bd->RightSuper = false;
+    io.AddKeyEvent(ImGuiMod_Ctrl, false);
+    io.AddKeyEvent(ImGuiMod_Shift, false);
+    io.AddKeyEvent(ImGuiMod_Alt, false);
+    io.AddKeyEvent(ImGuiMod_Super, false);
+}
+
+static bool ImGui_ImplQNX_IsTextCodePoint(unsigned int code_point)
+{
+    // At this point the QNX keysym has already been converted to Unicode.
+    // Do not reject Unicode private-use characters: a user keymap may emit one.
+    const bool surrogate = code_point >= 0xd800u && code_point <= 0xdfffu;
+    const bool control = code_point < 0x20u || (code_point >= 0x7fu && code_point <= 0x9fu);
+    return code_point <= IM_UNICODE_CODEPOINT_MAX && !surrogate && !control;
+}
+
+static bool ImGui_ImplQNX_ProcessKeyboardEvent(ImGui_ImplQNX_Data* bd, screen_event_t event)
+{
+    int flags = 0;
+    int modifiers = 0;
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_FLAGS, &flags) != 0 ||
+        screen_get_event_property_iv(event, SCREEN_PROPERTY_MODIFIERS, &modifiers) != 0)
+    {
+        return false;
+    }
+
+    // KEY_CAP is the unmodified key identity used for ImGuiKey events. SYM is
+    // the layout/modifier-translated QNX keysym used for text input.
+    int key_cap = 0;
+    int key_sym = 0;
+    int scan_code = 0;
+    const bool cap_valid = (flags & SCREEN_FLAG_CAP_VALID) != 0;
+    const bool sym_valid = (flags & SCREEN_FLAG_SYM_VALID) != 0;
+    const bool scan_valid = (flags & SCREEN_FLAG_SCAN_VALID) != 0;
+    const bool down = (flags & (SCREEN_FLAG_KEY_DOWN | SCREEN_FLAG_KEY_REPEAT)) != 0;
+
+    if (cap_valid && screen_get_event_property_iv(event, SCREEN_PROPERTY_KEY_CAP, &key_cap) != 0)
+    {
+        return false;
+    }
+    if (sym_valid && screen_get_event_property_iv(event, SCREEN_PROPERTY_SYM, &key_sym) != 0)
+    {
+        return false;
+    }
+    if (scan_valid && screen_get_event_property_iv(event, SCREEN_PROPERTY_SCAN, &scan_code) != 0)
+    {
+        scan_code = 0;
+    }
+
+    const ImGuiKey key = cap_valid ? ImGui_ImplQNX_KeyCodeToImGuiKey(key_cap) : ImGuiKey_None;
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Modifier events must precede the ordinary key event in Dear ImGui's queue.
+    // Unlike qterm, we still submit the individual modifier key because ImGui
+    // exposes Left/Right Ctrl, Shift, Alt and Super as named keys.
+    ImGui_ImplQNX_UpdateKeyModifiers(io, bd, modifiers, key, down);
+
+    if (key != ImGuiKey_None)
+    {
+        io.AddKeyEvent(key, down);
+        io.SetKeyEventNativeData(key, key_cap, scan_code);
+    }
+
+    bool text_added = false;
+    if (down && sym_valid && key_sym >= 0)
+    {
+        const unsigned int keysym = (unsigned int)key_sym;
+        // QNX special/function symbols begin at KEYCODE_PC_KEYS. Printable
+        // symbols below that boundary use X11 keysym encoding. Also accept the
+        // standard directly encoded UCS keysym form (0x01000000 | codepoint).
+        if (keysym < (unsigned int)KEYCODE_PC_KEYS || (keysym & 0xff000000u) == 0x01000000u)
+        {
+            const unsigned int code_point = ImGui_ImplQNX_KeySymToUnicode(keysym);
+            if (ImGui_ImplQNX_IsTextCodePoint(code_point))
+            {
+                io.AddInputCharacter(code_point);
+                text_added = true;
+            }
+        }
+    }
+
+    return key != ImGuiKey_None || text_added || cap_valid || sym_valid;
+}
+
+static bool ImGui_ImplQNX_ProcessPointerEvent(ImGui_ImplQNX_Data* bd, screen_event_t event)
+{
+    int position[2] = {};
+    int buttons = 0;
+    int wheel_vertical = 0;
+    int wheel_horizontal = 0;
+
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_SOURCE_POSITION, position) != 0 &&
+        screen_get_event_property_iv(event, SCREEN_PROPERTY_POSITION, position) != 0)
+    {
+        return false;
+    }
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_BUTTONS, &buttons) != 0)
+    {
+        buttons = bd->MouseButtons;
+    }
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.AddMouseSourceEvent(ImGuiMouseSource_Mouse);
+    io.AddMousePosEvent((float)position[0], (float)position[1]);
+
+    const int changed_buttons = buttons ^ bd->MouseButtons;
+    if ((changed_buttons & SCREEN_LEFT_MOUSE_BUTTON) != 0)
+    {
+        io.AddMouseButtonEvent(0, (buttons & SCREEN_LEFT_MOUSE_BUTTON) != 0);
+    }
+    if ((changed_buttons & SCREEN_RIGHT_MOUSE_BUTTON) != 0)
+    {
+        io.AddMouseButtonEvent(1, (buttons & SCREEN_RIGHT_MOUSE_BUTTON) != 0);
+    }
+    if ((changed_buttons & SCREEN_MIDDLE_MOUSE_BUTTON) != 0)
+    {
+        io.AddMouseButtonEvent(2, (buttons & SCREEN_MIDDLE_MOUSE_BUTTON) != 0);
+    }
+    bd->MouseButtons = buttons;
+
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_MOUSE_WHEEL, &wheel_vertical) != 0)
+    {
+        wheel_vertical = 0;
+    }
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_MOUSE_HORIZONTAL_WHEEL, &wheel_horizontal) != 0)
+    {
+        wheel_horizontal = 0;
+    }
+    if (wheel_vertical != 0 || wheel_horizontal != 0)
+    {
+        // Screen: up/left are negative. Dear ImGui: up/left are positive.
+        io.AddMouseWheelEvent((float)-wheel_horizontal, (float)-wheel_vertical);
+    }
+    return true;
+}
+
+static bool ImGui_ImplQNX_ProcessTouchEvent(ImGui_ImplQNX_Data* bd, screen_event_t event, int event_type)
+{
+    int touch_id = -1;
+    int position[2] = {};
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_TOUCH_ID, &touch_id) != 0)
+    {
+        return false;
+    }
+
+    const bool is_release = event_type == SCREEN_EVENT_MTOUCH_RELEASE;
+    if (bd->ActiveTouchId != -1 && touch_id != bd->ActiveTouchId)
+    {
+        return false;
+    }
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.AddMouseSourceEvent(ImGuiMouseSource_TouchScreen);
+
+    if (!is_release)
+    {
+        if (screen_get_event_property_iv(event, SCREEN_PROPERTY_SOURCE_POSITION, position) != 0 &&
+            screen_get_event_property_iv(event, SCREEN_PROPERTY_POSITION, position) != 0)
+        {
+            return false;
+        }
+        io.AddMousePosEvent((float)position[0], (float)position[1]);
+    }
+
+    if (event_type == SCREEN_EVENT_MTOUCH_TOUCH)
+    {
+        bd->ActiveTouchId = touch_id;
+        io.AddMouseButtonEvent(0, true);
+    }
+    else if (is_release)
+    {
+        io.AddMouseButtonEvent(0, false);
+        io.AddMousePosEvent(-FLT_MAX, -FLT_MAX);
+        bd->ActiveTouchId = -1;
+    }
+    return true;
+}
+
+bool ImGui_ImplQNX_ProcessEvent(screen_event_t event)
+{
+    ImGui_ImplQNX_Data* bd = ImGui_ImplQNX_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplQNX_Init()?");
+    if (bd == nullptr || event == nullptr)
+    {
+        return false;
+    }
+
+    int event_type = SCREEN_EVENT_NONE;
+    if (screen_get_event_property_iv(event, SCREEN_PROPERTY_TYPE, &event_type) != 0 || event_type == SCREEN_EVENT_NONE)
+    {
+        return false;
+    }
+    switch (event_type)
+    {
+        case SCREEN_EVENT_KEYBOARD:
+            return ImGui_ImplQNX_ProcessKeyboardEvent(bd, event);
+        case SCREEN_EVENT_POINTER:
+            return ImGui_ImplQNX_ProcessPointerEvent(bd, event);
+        case SCREEN_EVENT_MTOUCH_TOUCH:
+        case SCREEN_EVENT_MTOUCH_MOVE:
+        case SCREEN_EVENT_MTOUCH_RELEASE:
+            return ImGui_ImplQNX_ProcessTouchEvent(bd, event, event_type);
+        case SCREEN_EVENT_PROPERTY:
+        {
+            int property = 0;
+            if (screen_get_event_property_iv(event, SCREEN_PROPERTY_NAME, &property) != 0)
+            {
+                return false;
+            }
+            if (property == SCREEN_PROPERTY_FOCUS)
+            {
+                int focused = 0;
+                if (screen_get_window_property_iv(bd->Window, SCREEN_PROPERTY_FOCUS, &focused) == 0)
+                {
+                    ImGuiIO& io = ImGui::GetIO();
+                    io.AddFocusEvent(focused != 0);
+                    if (focused == 0)
+                    {
+                        ImGui_ImplQNX_ClearModifierState(io, bd);
+                    }
+                }
+                return true;
+            }
+            if (property == SCREEN_PROPERTY_SIZE || property == SCREEN_PROPERTY_BUFFER_SIZE || property == SCREEN_PROPERTY_VISIBLE)
+            {
+                return true;
+            }
+            return false;
+        }
+        case SCREEN_EVENT_CLOSE:
+        {
+            ImGuiIO& io = ImGui::GetIO();
+            io.AddFocusEvent(false);
+            ImGui_ImplQNX_ClearModifierState(io, bd);
+            return true;
+        }
+        default:
+            return false;
+    }
+}
+
+bool ImGui_ImplQNX_Init(screen_context_t context, screen_window_t window)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendPlatformUserData == nullptr && "Already initialized a platform backend!");
+    IM_ASSERT(context != nullptr && window != nullptr);
+    if (context == nullptr || window == nullptr)
+    {
+        return false;
+    }
+
+    ImGui_ImplQNX_Data* bd = IM_NEW(ImGui_ImplQNX_Data)();
+    io.BackendPlatformUserData = (void*)bd;
+    io.BackendPlatformName = "imgui_impl_qnx";
+
+    bd->Context = context;
+    bd->Window = window;
+    bd->TimeNanoseconds = ImGui_ImplQNX_GetTimeNanoseconds();
+
+    int focused = 0;
+    if (screen_get_window_property_iv(window, SCREEN_PROPERTY_FOCUS, &focused) == 0)
+    {
+        io.AddFocusEvent(focused != 0);
+    }
+    return true;
+}
+
+void ImGui_ImplQNX_Shutdown()
+{
+    ImGui_ImplQNX_Data* bd = ImGui_ImplQNX_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No platform backend to shutdown, or already shutdown?");
+    if (bd == nullptr)
+    {
+        return;
+    }
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.BackendPlatformName = nullptr;
+    io.BackendPlatformUserData = nullptr;
+    IM_DELETE(bd);
+}
+
+void ImGui_ImplQNX_NewFrame()
+{
+    ImGui_ImplQNX_Data* bd = ImGui_ImplQNX_GetBackendData();
+    IM_ASSERT(bd != nullptr && "Did you call ImGui_ImplQNX_Init()?");
+    if (bd == nullptr)
+    {
+        return;
+    }
+
+    ImGuiIO& io = ImGui::GetIO();
+    int size[2] = {};
+    if (screen_get_window_property_iv(bd->Window, SCREEN_PROPERTY_BUFFER_SIZE, size) != 0 ||
+        size[0] <= 0 || size[1] <= 0)
+    {
+        size[0] = 0;
+        size[1] = 0;
+        (void)screen_get_window_property_iv(bd->Window, SCREEN_PROPERTY_SIZE, size);
+    }
+    if (size[0] > 0 && size[1] > 0)
+    {
+        io.DisplaySize = ImVec2((float)size[0], (float)size[1]);
+        io.DisplayFramebufferScale = ImVec2(1.0f, 1.0f);
+    }
+
+    const uint64_t current_time = ImGui_ImplQNX_GetTimeNanoseconds();
+    if (current_time > bd->TimeNanoseconds && bd->TimeNanoseconds != 0)
+    {
+        io.DeltaTime = (float)((double)(current_time - bd->TimeNanoseconds) / 1000000000.0);
+    }
+    else
+    {
+        io.DeltaTime = 1.0f / 60.0f;
+    }
+    bd->TimeNanoseconds = current_time;
+}
+
+// Generated by Markus Kuhn's public-domain unicode/convmap.pl from X11 keysymdef.h and UnicodeData.
+// Original source: https://www.cl.cam.ac.uk/~mgk25/ucs/keysym2ucs.c
+// The table must remain sorted by keysym for the binary search below.
+struct ImGui_ImplQNX_KeySymPair
+{
+    uint16_t KeySym;
+    uint16_t Unicode;
+};
+
+static const ImGui_ImplQNX_KeySymPair ImGui_ImplQNX_KeySymTable[] =
+{
+    { 0x01a1, 0x0104 }, { 0x01a2, 0x02d8 }, { 0x01a3, 0x0141 }, { 0x01a5, 0x013d },
+    { 0x01a6, 0x015a }, { 0x01a9, 0x0160 }, { 0x01aa, 0x015e }, { 0x01ab, 0x0164 },
+    { 0x01ac, 0x0179 }, { 0x01ae, 0x017d }, { 0x01af, 0x017b }, { 0x01b1, 0x0105 },
+    { 0x01b2, 0x02db }, { 0x01b3, 0x0142 }, { 0x01b5, 0x013e }, { 0x01b6, 0x015b },
+    { 0x01b7, 0x02c7 }, { 0x01b9, 0x0161 }, { 0x01ba, 0x015f }, { 0x01bb, 0x0165 },
+    { 0x01bc, 0x017a }, { 0x01bd, 0x02dd }, { 0x01be, 0x017e }, { 0x01bf, 0x017c },
+    { 0x01c0, 0x0154 }, { 0x01c3, 0x0102 }, { 0x01c5, 0x0139 }, { 0x01c6, 0x0106 },
+    { 0x01c8, 0x010c }, { 0x01ca, 0x0118 }, { 0x01cc, 0x011a }, { 0x01cf, 0x010e },
+    { 0x01d0, 0x0110 }, { 0x01d1, 0x0143 }, { 0x01d2, 0x0147 }, { 0x01d5, 0x0150 },
+    { 0x01d8, 0x0158 }, { 0x01d9, 0x016e }, { 0x01db, 0x0170 }, { 0x01de, 0x0162 },
+    { 0x01e0, 0x0155 }, { 0x01e3, 0x0103 }, { 0x01e5, 0x013a }, { 0x01e6, 0x0107 },
+    { 0x01e8, 0x010d }, { 0x01ea, 0x0119 }, { 0x01ec, 0x011b }, { 0x01ef, 0x010f },
+    { 0x01f0, 0x0111 }, { 0x01f1, 0x0144 }, { 0x01f2, 0x0148 }, { 0x01f5, 0x0151 },
+    { 0x01f8, 0x0159 }, { 0x01f9, 0x016f }, { 0x01fb, 0x0171 }, { 0x01fe, 0x0163 },
+    { 0x01ff, 0x02d9 }, { 0x02a1, 0x0126 }, { 0x02a6, 0x0124 }, { 0x02a9, 0x0130 },
+    { 0x02ab, 0x011e }, { 0x02ac, 0x0134 }, { 0x02b1, 0x0127 }, { 0x02b6, 0x0125 },
+    { 0x02b9, 0x0131 }, { 0x02bb, 0x011f }, { 0x02bc, 0x0135 }, { 0x02c5, 0x010a },
+    { 0x02c6, 0x0108 }, { 0x02d5, 0x0120 }, { 0x02d8, 0x011c }, { 0x02dd, 0x016c },
+    { 0x02de, 0x015c }, { 0x02e5, 0x010b }, { 0x02e6, 0x0109 }, { 0x02f5, 0x0121 },
+    { 0x02f8, 0x011d }, { 0x02fd, 0x016d }, { 0x02fe, 0x015d }, { 0x03a2, 0x0138 },
+    { 0x03a3, 0x0156 }, { 0x03a5, 0x0128 }, { 0x03a6, 0x013b }, { 0x03aa, 0x0112 },
+    { 0x03ab, 0x0122 }, { 0x03ac, 0x0166 }, { 0x03b3, 0x0157 }, { 0x03b5, 0x0129 },
+    { 0x03b6, 0x013c }, { 0x03ba, 0x0113 }, { 0x03bb, 0x0123 }, { 0x03bc, 0x0167 },
+    { 0x03bd, 0x014a }, { 0x03bf, 0x014b }, { 0x03c0, 0x0100 }, { 0x03c7, 0x012e },
+    { 0x03cc, 0x0116 }, { 0x03cf, 0x012a }, { 0x03d1, 0x0145 }, { 0x03d2, 0x014c },
+    { 0x03d3, 0x0136 }, { 0x03d9, 0x0172 }, { 0x03dd, 0x0168 }, { 0x03de, 0x016a },
+    { 0x03e0, 0x0101 }, { 0x03e7, 0x012f }, { 0x03ec, 0x0117 }, { 0x03ef, 0x012b },
+    { 0x03f1, 0x0146 }, { 0x03f2, 0x014d }, { 0x03f3, 0x0137 }, { 0x03f9, 0x0173 },
+    { 0x03fd, 0x0169 }, { 0x03fe, 0x016b }, { 0x047e, 0x203e }, { 0x04a1, 0x3002 },
+    { 0x04a2, 0x300c }, { 0x04a3, 0x300d }, { 0x04a4, 0x3001 }, { 0x04a5, 0x30fb },
+    { 0x04a6, 0x30f2 }, { 0x04a7, 0x30a1 }, { 0x04a8, 0x30a3 }, { 0x04a9, 0x30a5 },
+    { 0x04aa, 0x30a7 }, { 0x04ab, 0x30a9 }, { 0x04ac, 0x30e3 }, { 0x04ad, 0x30e5 },
+    { 0x04ae, 0x30e7 }, { 0x04af, 0x30c3 }, { 0x04b0, 0x30fc }, { 0x04b1, 0x30a2 },
+    { 0x04b2, 0x30a4 }, { 0x04b3, 0x30a6 }, { 0x04b4, 0x30a8 }, { 0x04b5, 0x30aa },
+    { 0x04b6, 0x30ab }, { 0x04b7, 0x30ad }, { 0x04b8, 0x30af }, { 0x04b9, 0x30b1 },
+    { 0x04ba, 0x30b3 }, { 0x04bb, 0x30b5 }, { 0x04bc, 0x30b7 }, { 0x04bd, 0x30b9 },
+    { 0x04be, 0x30bb }, { 0x04bf, 0x30bd }, { 0x04c0, 0x30bf }, { 0x04c1, 0x30c1 },
+    { 0x04c2, 0x30c4 }, { 0x04c3, 0x30c6 }, { 0x04c4, 0x30c8 }, { 0x04c5, 0x30ca },
+    { 0x04c6, 0x30cb }, { 0x04c7, 0x30cc }, { 0x04c8, 0x30cd }, { 0x04c9, 0x30ce },
+    { 0x04ca, 0x30cf }, { 0x04cb, 0x30d2 }, { 0x04cc, 0x30d5 }, { 0x04cd, 0x30d8 },
+    { 0x04ce, 0x30db }, { 0x04cf, 0x30de }, { 0x04d0, 0x30df }, { 0x04d1, 0x30e0 },
+    { 0x04d2, 0x30e1 }, { 0x04d3, 0x30e2 }, { 0x04d4, 0x30e4 }, { 0x04d5, 0x30e6 },
+    { 0x04d6, 0x30e8 }, { 0x04d7, 0x30e9 }, { 0x04d8, 0x30ea }, { 0x04d9, 0x30eb },
+    { 0x04da, 0x30ec }, { 0x04db, 0x30ed }, { 0x04dc, 0x30ef }, { 0x04dd, 0x30f3 },
+    { 0x04de, 0x309b }, { 0x04df, 0x309c }, { 0x05ac, 0x060c }, { 0x05bb, 0x061b },
+    { 0x05bf, 0x061f }, { 0x05c1, 0x0621 }, { 0x05c2, 0x0622 }, { 0x05c3, 0x0623 },
+    { 0x05c4, 0x0624 }, { 0x05c5, 0x0625 }, { 0x05c6, 0x0626 }, { 0x05c7, 0x0627 },
+    { 0x05c8, 0x0628 }, { 0x05c9, 0x0629 }, { 0x05ca, 0x062a }, { 0x05cb, 0x062b },
+    { 0x05cc, 0x062c }, { 0x05cd, 0x062d }, { 0x05ce, 0x062e }, { 0x05cf, 0x062f },
+    { 0x05d0, 0x0630 }, { 0x05d1, 0x0631 }, { 0x05d2, 0x0632 }, { 0x05d3, 0x0633 },
+    { 0x05d4, 0x0634 }, { 0x05d5, 0x0635 }, { 0x05d6, 0x0636 }, { 0x05d7, 0x0637 },
+    { 0x05d8, 0x0638 }, { 0x05d9, 0x0639 }, { 0x05da, 0x063a }, { 0x05e0, 0x0640 },
+    { 0x05e1, 0x0641 }, { 0x05e2, 0x0642 }, { 0x05e3, 0x0643 }, { 0x05e4, 0x0644 },
+    { 0x05e5, 0x0645 }, { 0x05e6, 0x0646 }, { 0x05e7, 0x0647 }, { 0x05e8, 0x0648 },
+    { 0x05e9, 0x0649 }, { 0x05ea, 0x064a }, { 0x05eb, 0x064b }, { 0x05ec, 0x064c },
+    { 0x05ed, 0x064d }, { 0x05ee, 0x064e }, { 0x05ef, 0x064f }, { 0x05f0, 0x0650 },
+    { 0x05f1, 0x0651 }, { 0x05f2, 0x0652 }, { 0x06a1, 0x0452 }, { 0x06a2, 0x0453 },
+    { 0x06a3, 0x0451 }, { 0x06a4, 0x0454 }, { 0x06a5, 0x0455 }, { 0x06a6, 0x0456 },
+    { 0x06a7, 0x0457 }, { 0x06a8, 0x0458 }, { 0x06a9, 0x0459 }, { 0x06aa, 0x045a },
+    { 0x06ab, 0x045b }, { 0x06ac, 0x045c }, { 0x06ae, 0x045e }, { 0x06af, 0x045f },
+    { 0x06b0, 0x2116 }, { 0x06b1, 0x0402 }, { 0x06b2, 0x0403 }, { 0x06b3, 0x0401 },
+    { 0x06b4, 0x0404 }, { 0x06b5, 0x0405 }, { 0x06b6, 0x0406 }, { 0x06b7, 0x0407 },
+    { 0x06b8, 0x0408 }, { 0x06b9, 0x0409 }, { 0x06ba, 0x040a }, { 0x06bb, 0x040b },
+    { 0x06bc, 0x040c }, { 0x06be, 0x040e }, { 0x06bf, 0x040f }, { 0x06c0, 0x044e },
+    { 0x06c1, 0x0430 }, { 0x06c2, 0x0431 }, { 0x06c3, 0x0446 }, { 0x06c4, 0x0434 },
+    { 0x06c5, 0x0435 }, { 0x06c6, 0x0444 }, { 0x06c7, 0x0433 }, { 0x06c8, 0x0445 },
+    { 0x06c9, 0x0438 }, { 0x06ca, 0x0439 }, { 0x06cb, 0x043a }, { 0x06cc, 0x043b },
+    { 0x06cd, 0x043c }, { 0x06ce, 0x043d }, { 0x06cf, 0x043e }, { 0x06d0, 0x043f },
+    { 0x06d1, 0x044f }, { 0x06d2, 0x0440 }, { 0x06d3, 0x0441 }, { 0x06d4, 0x0442 },
+    { 0x06d5, 0x0443 }, { 0x06d6, 0x0436 }, { 0x06d7, 0x0432 }, { 0x06d8, 0x044c },
+    { 0x06d9, 0x044b }, { 0x06da, 0x0437 }, { 0x06db, 0x0448 }, { 0x06dc, 0x044d },
+    { 0x06dd, 0x0449 }, { 0x06de, 0x0447 }, { 0x06df, 0x044a }, { 0x06e0, 0x042e },
+    { 0x06e1, 0x0410 }, { 0x06e2, 0x0411 }, { 0x06e3, 0x0426 }, { 0x06e4, 0x0414 },
+    { 0x06e5, 0x0415 }, { 0x06e6, 0x0424 }, { 0x06e7, 0x0413 }, { 0x06e8, 0x0425 },
+    { 0x06e9, 0x0418 }, { 0x06ea, 0x0419 }, { 0x06eb, 0x041a }, { 0x06ec, 0x041b },
+    { 0x06ed, 0x041c }, { 0x06ee, 0x041d }, { 0x06ef, 0x041e }, { 0x06f0, 0x041f },
+    { 0x06f1, 0x042f }, { 0x06f2, 0x0420 }, { 0x06f3, 0x0421 }, { 0x06f4, 0x0422 },
+    { 0x06f5, 0x0423 }, { 0x06f6, 0x0416 }, { 0x06f7, 0x0412 }, { 0x06f8, 0x042c },
+    { 0x06f9, 0x042b }, { 0x06fa, 0x0417 }, { 0x06fb, 0x0428 }, { 0x06fc, 0x042d },
+    { 0x06fd, 0x0429 }, { 0x06fe, 0x0427 }, { 0x06ff, 0x042a }, { 0x07a1, 0x0386 },
+    { 0x07a2, 0x0388 }, { 0x07a3, 0x0389 }, { 0x07a4, 0x038a }, { 0x07a5, 0x03aa },
+    { 0x07a7, 0x038c }, { 0x07a8, 0x038e }, { 0x07a9, 0x03ab }, { 0x07ab, 0x038f },
+    { 0x07ae, 0x0385 }, { 0x07af, 0x2015 }, { 0x07b1, 0x03ac }, { 0x07b2, 0x03ad },
+    { 0x07b3, 0x03ae }, { 0x07b4, 0x03af }, { 0x07b5, 0x03ca }, { 0x07b6, 0x0390 },
+    { 0x07b7, 0x03cc }, { 0x07b8, 0x03cd }, { 0x07b9, 0x03cb }, { 0x07ba, 0x03b0 },
+    { 0x07bb, 0x03ce }, { 0x07c1, 0x0391 }, { 0x07c2, 0x0392 }, { 0x07c3, 0x0393 },
+    { 0x07c4, 0x0394 }, { 0x07c5, 0x0395 }, { 0x07c6, 0x0396 }, { 0x07c7, 0x0397 },
+    { 0x07c8, 0x0398 }, { 0x07c9, 0x0399 }, { 0x07ca, 0x039a }, { 0x07cb, 0x039b },
+    { 0x07cc, 0x039c }, { 0x07cd, 0x039d }, { 0x07ce, 0x039e }, { 0x07cf, 0x039f },
+    { 0x07d0, 0x03a0 }, { 0x07d1, 0x03a1 }, { 0x07d2, 0x03a3 }, { 0x07d4, 0x03a4 },
+    { 0x07d5, 0x03a5 }, { 0x07d6, 0x03a6 }, { 0x07d7, 0x03a7 }, { 0x07d8, 0x03a8 },
+    { 0x07d9, 0x03a9 }, { 0x07e1, 0x03b1 }, { 0x07e2, 0x03b2 }, { 0x07e3, 0x03b3 },
+    { 0x07e4, 0x03b4 }, { 0x07e5, 0x03b5 }, { 0x07e6, 0x03b6 }, { 0x07e7, 0x03b7 },
+    { 0x07e8, 0x03b8 }, { 0x07e9, 0x03b9 }, { 0x07ea, 0x03ba }, { 0x07eb, 0x03bb },
+    { 0x07ec, 0x03bc }, { 0x07ed, 0x03bd }, { 0x07ee, 0x03be }, { 0x07ef, 0x03bf },
+    { 0x07f0, 0x03c0 }, { 0x07f1, 0x03c1 }, { 0x07f2, 0x03c3 }, { 0x07f3, 0x03c2 },
+    { 0x07f4, 0x03c4 }, { 0x07f5, 0x03c5 }, { 0x07f6, 0x03c6 }, { 0x07f7, 0x03c7 },
+    { 0x07f8, 0x03c8 }, { 0x07f9, 0x03c9 }, { 0x08a1, 0x23b7 }, { 0x08a2, 0x250c },
+    { 0x08a3, 0x2500 }, { 0x08a4, 0x2320 }, { 0x08a5, 0x2321 }, { 0x08a6, 0x2502 },
+    { 0x08a7, 0x23a1 }, { 0x08a8, 0x23a3 }, { 0x08a9, 0x23a4 }, { 0x08aa, 0x23a6 },
+    { 0x08ab, 0x239b }, { 0x08ac, 0x239d }, { 0x08ad, 0x239e }, { 0x08ae, 0x23a0 },
+    { 0x08af, 0x23a8 }, { 0x08b0, 0x23ac }, { 0x08bc, 0x2264 }, { 0x08bd, 0x2260 },
+    { 0x08be, 0x2265 }, { 0x08bf, 0x222b }, { 0x08c0, 0x2234 }, { 0x08c1, 0x221d },
+    { 0x08c2, 0x221e }, { 0x08c5, 0x2207 }, { 0x08c8, 0x223c }, { 0x08c9, 0x2243 },
+    { 0x08cd, 0x21d4 }, { 0x08ce, 0x21d2 }, { 0x08cf, 0x2261 }, { 0x08d6, 0x221a },
+    { 0x08da, 0x2282 }, { 0x08db, 0x2283 }, { 0x08dc, 0x2229 }, { 0x08dd, 0x222a },
+    { 0x08de, 0x2227 }, { 0x08df, 0x2228 }, { 0x08ef, 0x2202 }, { 0x08f6, 0x0192 },
+    { 0x08fb, 0x2190 }, { 0x08fc, 0x2191 }, { 0x08fd, 0x2192 }, { 0x08fe, 0x2193 },
+    { 0x09e0, 0x25c6 }, { 0x09e1, 0x2592 }, { 0x09e2, 0x2409 }, { 0x09e3, 0x240c },
+    { 0x09e4, 0x240d }, { 0x09e5, 0x240a }, { 0x09e8, 0x2424 }, { 0x09e9, 0x240b },
+    { 0x09ea, 0x2518 }, { 0x09eb, 0x2510 }, { 0x09ec, 0x250c }, { 0x09ed, 0x2514 },
+    { 0x09ee, 0x253c }, { 0x09ef, 0x23ba }, { 0x09f0, 0x23bb }, { 0x09f1, 0x2500 },
+    { 0x09f2, 0x23bc }, { 0x09f3, 0x23bd }, { 0x09f4, 0x251c }, { 0x09f5, 0x2524 },
+    { 0x09f6, 0x2534 }, { 0x09f7, 0x252c }, { 0x09f8, 0x2502 }, { 0x0aa1, 0x2003 },
+    { 0x0aa2, 0x2002 }, { 0x0aa3, 0x2004 }, { 0x0aa4, 0x2005 }, { 0x0aa5, 0x2007 },
+    { 0x0aa6, 0x2008 }, { 0x0aa7, 0x2009 }, { 0x0aa8, 0x200a }, { 0x0aa9, 0x2014 },
+    { 0x0aaa, 0x2013 }, { 0x0aae, 0x2026 }, { 0x0aaf, 0x2025 }, { 0x0ab0, 0x2153 },
+    { 0x0ab1, 0x2154 }, { 0x0ab2, 0x2155 }, { 0x0ab3, 0x2156 }, { 0x0ab4, 0x2157 },
+    { 0x0ab5, 0x2158 }, { 0x0ab6, 0x2159 }, { 0x0ab7, 0x215a }, { 0x0ab8, 0x2105 },
+    { 0x0abb, 0x2012 }, { 0x0abc, 0x2329 }, { 0x0abe, 0x232a }, { 0x0ac3, 0x215b },
+    { 0x0ac4, 0x215c }, { 0x0ac5, 0x215d }, { 0x0ac6, 0x215e }, { 0x0ac9, 0x2122 },
+    { 0x0aca, 0x2613 }, { 0x0acc, 0x25c1 }, { 0x0acd, 0x25b7 }, { 0x0ace, 0x25cb },
+    { 0x0acf, 0x25af }, { 0x0ad0, 0x2018 }, { 0x0ad1, 0x2019 }, { 0x0ad2, 0x201c },
+    { 0x0ad3, 0x201d }, { 0x0ad4, 0x211e }, { 0x0ad6, 0x2032 }, { 0x0ad7, 0x2033 },
+    { 0x0ad9, 0x271d }, { 0x0adb, 0x25ac }, { 0x0adc, 0x25c0 }, { 0x0add, 0x25b6 },
+    { 0x0ade, 0x25cf }, { 0x0adf, 0x25ae }, { 0x0ae0, 0x25e6 }, { 0x0ae1, 0x25ab },
+    { 0x0ae2, 0x25ad }, { 0x0ae3, 0x25b3 }, { 0x0ae4, 0x25bd }, { 0x0ae5, 0x2606 },
+    { 0x0ae6, 0x2022 }, { 0x0ae7, 0x25aa }, { 0x0ae8, 0x25b2 }, { 0x0ae9, 0x25bc },
+    { 0x0aea, 0x261c }, { 0x0aeb, 0x261e }, { 0x0aec, 0x2663 }, { 0x0aed, 0x2666 },
+    { 0x0aee, 0x2665 }, { 0x0af0, 0x2720 }, { 0x0af1, 0x2020 }, { 0x0af2, 0x2021 },
+    { 0x0af3, 0x2713 }, { 0x0af4, 0x2717 }, { 0x0af5, 0x266f }, { 0x0af6, 0x266d },
+    { 0x0af7, 0x2642 }, { 0x0af8, 0x2640 }, { 0x0af9, 0x260e }, { 0x0afa, 0x2315 },
+    { 0x0afb, 0x2117 }, { 0x0afc, 0x2038 }, { 0x0afd, 0x201a }, { 0x0afe, 0x201e },
+    { 0x0ba3, 0x003c }, { 0x0ba6, 0x003e }, { 0x0ba8, 0x2228 }, { 0x0ba9, 0x2227 },
+    { 0x0bc0, 0x00af }, { 0x0bc2, 0x22a5 }, { 0x0bc3, 0x2229 }, { 0x0bc4, 0x230a },
+    { 0x0bc6, 0x005f }, { 0x0bca, 0x2218 }, { 0x0bcc, 0x2395 }, { 0x0bce, 0x22a4 },
+    { 0x0bcf, 0x25cb }, { 0x0bd3, 0x2308 }, { 0x0bd6, 0x222a }, { 0x0bd8, 0x2283 },
+    { 0x0bda, 0x2282 }, { 0x0bdc, 0x22a2 }, { 0x0bfc, 0x22a3 }, { 0x0cdf, 0x2017 },
+    { 0x0ce0, 0x05d0 }, { 0x0ce1, 0x05d1 }, { 0x0ce2, 0x05d2 }, { 0x0ce3, 0x05d3 },
+    { 0x0ce4, 0x05d4 }, { 0x0ce5, 0x05d5 }, { 0x0ce6, 0x05d6 }, { 0x0ce7, 0x05d7 },
+    { 0x0ce8, 0x05d8 }, { 0x0ce9, 0x05d9 }, { 0x0cea, 0x05da }, { 0x0ceb, 0x05db },
+    { 0x0cec, 0x05dc }, { 0x0ced, 0x05dd }, { 0x0cee, 0x05de }, { 0x0cef, 0x05df },
+    { 0x0cf0, 0x05e0 }, { 0x0cf1, 0x05e1 }, { 0x0cf2, 0x05e2 }, { 0x0cf3, 0x05e3 },
+    { 0x0cf4, 0x05e4 }, { 0x0cf5, 0x05e5 }, { 0x0cf6, 0x05e6 }, { 0x0cf7, 0x05e7 },
+    { 0x0cf8, 0x05e8 }, { 0x0cf9, 0x05e9 }, { 0x0cfa, 0x05ea }, { 0x0da1, 0x0e01 },
+    { 0x0da2, 0x0e02 }, { 0x0da3, 0x0e03 }, { 0x0da4, 0x0e04 }, { 0x0da5, 0x0e05 },
+    { 0x0da6, 0x0e06 }, { 0x0da7, 0x0e07 }, { 0x0da8, 0x0e08 }, { 0x0da9, 0x0e09 },
+    { 0x0daa, 0x0e0a }, { 0x0dab, 0x0e0b }, { 0x0dac, 0x0e0c }, { 0x0dad, 0x0e0d },
+    { 0x0dae, 0x0e0e }, { 0x0daf, 0x0e0f }, { 0x0db0, 0x0e10 }, { 0x0db1, 0x0e11 },
+    { 0x0db2, 0x0e12 }, { 0x0db3, 0x0e13 }, { 0x0db4, 0x0e14 }, { 0x0db5, 0x0e15 },
+    { 0x0db6, 0x0e16 }, { 0x0db7, 0x0e17 }, { 0x0db8, 0x0e18 }, { 0x0db9, 0x0e19 },
+    { 0x0dba, 0x0e1a }, { 0x0dbb, 0x0e1b }, { 0x0dbc, 0x0e1c }, { 0x0dbd, 0x0e1d },
+    { 0x0dbe, 0x0e1e }, { 0x0dbf, 0x0e1f }, { 0x0dc0, 0x0e20 }, { 0x0dc1, 0x0e21 },
+    { 0x0dc2, 0x0e22 }, { 0x0dc3, 0x0e23 }, { 0x0dc4, 0x0e24 }, { 0x0dc5, 0x0e25 },
+    { 0x0dc6, 0x0e26 }, { 0x0dc7, 0x0e27 }, { 0x0dc8, 0x0e28 }, { 0x0dc9, 0x0e29 },
+    { 0x0dca, 0x0e2a }, { 0x0dcb, 0x0e2b }, { 0x0dcc, 0x0e2c }, { 0x0dcd, 0x0e2d },
+    { 0x0dce, 0x0e2e }, { 0x0dcf, 0x0e2f }, { 0x0dd0, 0x0e30 }, { 0x0dd1, 0x0e31 },
+    { 0x0dd2, 0x0e32 }, { 0x0dd3, 0x0e33 }, { 0x0dd4, 0x0e34 }, { 0x0dd5, 0x0e35 },
+    { 0x0dd6, 0x0e36 }, { 0x0dd7, 0x0e37 }, { 0x0dd8, 0x0e38 }, { 0x0dd9, 0x0e39 },
+    { 0x0dda, 0x0e3a }, { 0x0ddf, 0x0e3f }, { 0x0de0, 0x0e40 }, { 0x0de1, 0x0e41 },
+    { 0x0de2, 0x0e42 }, { 0x0de3, 0x0e43 }, { 0x0de4, 0x0e44 }, { 0x0de5, 0x0e45 },
+    { 0x0de6, 0x0e46 }, { 0x0de7, 0x0e47 }, { 0x0de8, 0x0e48 }, { 0x0de9, 0x0e49 },
+    { 0x0dea, 0x0e4a }, { 0x0deb, 0x0e4b }, { 0x0dec, 0x0e4c }, { 0x0ded, 0x0e4d },
+    { 0x0df0, 0x0e50 }, { 0x0df1, 0x0e51 }, { 0x0df2, 0x0e52 }, { 0x0df3, 0x0e53 },
+    { 0x0df4, 0x0e54 }, { 0x0df5, 0x0e55 }, { 0x0df6, 0x0e56 }, { 0x0df7, 0x0e57 },
+    { 0x0df8, 0x0e58 }, { 0x0df9, 0x0e59 }, { 0x0ea1, 0x3131 }, { 0x0ea2, 0x3132 },
+    { 0x0ea3, 0x3133 }, { 0x0ea4, 0x3134 }, { 0x0ea5, 0x3135 }, { 0x0ea6, 0x3136 },
+    { 0x0ea7, 0x3137 }, { 0x0ea8, 0x3138 }, { 0x0ea9, 0x3139 }, { 0x0eaa, 0x313a },
+    { 0x0eab, 0x313b }, { 0x0eac, 0x313c }, { 0x0ead, 0x313d }, { 0x0eae, 0x313e },
+    { 0x0eaf, 0x313f }, { 0x0eb0, 0x3140 }, { 0x0eb1, 0x3141 }, { 0x0eb2, 0x3142 },
+    { 0x0eb3, 0x3143 }, { 0x0eb4, 0x3144 }, { 0x0eb5, 0x3145 }, { 0x0eb6, 0x3146 },
+    { 0x0eb7, 0x3147 }, { 0x0eb8, 0x3148 }, { 0x0eb9, 0x3149 }, { 0x0eba, 0x314a },
+    { 0x0ebb, 0x314b }, { 0x0ebc, 0x314c }, { 0x0ebd, 0x314d }, { 0x0ebe, 0x314e },
+    { 0x0ebf, 0x314f }, { 0x0ec0, 0x3150 }, { 0x0ec1, 0x3151 }, { 0x0ec2, 0x3152 },
+    { 0x0ec3, 0x3153 }, { 0x0ec4, 0x3154 }, { 0x0ec5, 0x3155 }, { 0x0ec6, 0x3156 },
+    { 0x0ec7, 0x3157 }, { 0x0ec8, 0x3158 }, { 0x0ec9, 0x3159 }, { 0x0eca, 0x315a },
+    { 0x0ecb, 0x315b }, { 0x0ecc, 0x315c }, { 0x0ecd, 0x315d }, { 0x0ece, 0x315e },
+    { 0x0ecf, 0x315f }, { 0x0ed0, 0x3160 }, { 0x0ed1, 0x3161 }, { 0x0ed2, 0x3162 },
+    { 0x0ed3, 0x3163 }, { 0x0ed4, 0x11a8 }, { 0x0ed5, 0x11a9 }, { 0x0ed6, 0x11aa },
+    { 0x0ed7, 0x11ab }, { 0x0ed8, 0x11ac }, { 0x0ed9, 0x11ad }, { 0x0eda, 0x11ae },
+    { 0x0edb, 0x11af }, { 0x0edc, 0x11b0 }, { 0x0edd, 0x11b1 }, { 0x0ede, 0x11b2 },
+    { 0x0edf, 0x11b3 }, { 0x0ee0, 0x11b4 }, { 0x0ee1, 0x11b5 }, { 0x0ee2, 0x11b6 },
+    { 0x0ee3, 0x11b7 }, { 0x0ee4, 0x11b8 }, { 0x0ee5, 0x11b9 }, { 0x0ee6, 0x11ba },
+    { 0x0ee7, 0x11bb }, { 0x0ee8, 0x11bc }, { 0x0ee9, 0x11bd }, { 0x0eea, 0x11be },
+    { 0x0eeb, 0x11bf }, { 0x0eec, 0x11c0 }, { 0x0eed, 0x11c1 }, { 0x0eee, 0x11c2 },
+    { 0x0eef, 0x316d }, { 0x0ef0, 0x3171 }, { 0x0ef1, 0x3178 }, { 0x0ef2, 0x317f },
+    { 0x0ef3, 0x3181 }, { 0x0ef4, 0x3184 }, { 0x0ef5, 0x3186 }, { 0x0ef6, 0x318d },
+    { 0x0ef7, 0x318e }, { 0x0ef8, 0x11eb }, { 0x0ef9, 0x11f0 }, { 0x0efa, 0x11f9 },
+    { 0x0eff, 0x20a9 }, { 0x13a4, 0x20ac }, { 0x13bc, 0x0152 }, { 0x13bd, 0x0153 },
+    { 0x13be, 0x0178 }, { 0x20ac, 0x20ac },
+};
+
+static unsigned int ImGui_ImplQNX_KeySymToUnicode(unsigned int keysym)
+{
+    // Latin-1 keysyms map directly to Unicode.
+    if ((keysym >= 0x0020u && keysym <= 0x007eu) ||
+        (keysym >= 0x00a0u && keysym <= 0x00ffu))
+    {
+        return keysym;
+    }
+
+    // X11-style directly encoded UCS keysyms use 0x01000000 | codepoint.
+    if ((keysym & 0xff000000u) == 0x01000000u)
+    {
+        const unsigned int codepoint = keysym & 0x00ffffffu;
+        return codepoint <= IM_UNICODE_CODEPOINT_MAX ? codepoint : 0u;
+    }
+
+    int min = 0;
+    int max = (int)(sizeof(ImGui_ImplQNX_KeySymTable) / sizeof(ImGui_ImplQNX_KeySymTable[0])) - 1;
+    while (max >= min)
+    {
+        const int mid = min + (max - min) / 2;
+        if (ImGui_ImplQNX_KeySymTable[mid].KeySym < keysym)
+        {
+            min = mid + 1;
+        }
+        else if (ImGui_ImplQNX_KeySymTable[mid].KeySym > keysym)
+        {
+            max = mid - 1;
+        }
+        else
+        {
+            return ImGui_ImplQNX_KeySymTable[mid].Unicode;
+        }
+    }
+
+    return 0u;
+}
+
+#endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_qnx.h

@@ -0,0 +1,35 @@
+// dear imgui: Platform Backend for QNX Screen
+// This needs to be used along with a Renderer Backend (e.g. OpenGL3, Vulkan).
+
+// Implemented features:
+//  [X] Platform: Keyboard support. Uses io.AddKeyEvent() and native QNX key symbols.
+//  [X] Platform: Mouse support. Handles position, three buttons and horizontal/vertical wheels.
+//  [X] Platform: Touch support. Maps the first active touch contact to the primary mouse button.
+//  [X] Platform: Focus and window-size updates.
+// Missing features or Issues:
+//  [ ] Platform: Clipboard support.
+//  [ ] Platform: Gamepad support.
+//  [ ] Platform: Mouse cursor shape and visibility (ImGuiBackendFlags_HasMouseCursors).
+
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#pragma once
+#include "imgui.h"      // IMGUI_IMPL_API
+#ifndef IMGUI_DISABLE
+
+#include <screen/screen.h>
+
+// The application owns the Screen context, window and event object.
+// Poll events with screen_get_event() and pass each non-NONE event to ProcessEvent().
+IMGUI_IMPL_API bool     ImGui_ImplQNX_Init(screen_context_t context, screen_window_t window);
+IMGUI_IMPL_API void     ImGui_ImplQNX_Shutdown();
+IMGUI_IMPL_API void     ImGui_ImplQNX_NewFrame();
+IMGUI_IMPL_API bool     ImGui_ImplQNX_ProcessEvent(screen_event_t event);
+
+#endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_sdl2.cpp

@@ -21,6 +21,9 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-08-06: Fixed querying framebuffer scale when using Metal. (#5592)
+//  2026-07-15: Inputs: restore SDL_StartTextInput()/SDL_StopTextInput() in IME handler for on-screen keyboard support on Android/mobile. (#7636, #9474)
+//  2026-04-16: Made ImGui_ImplSDL2_GetContentScaleForWindow(), ImGui_ImplSDL2_GetContentScaleForDisplay() helpers return a minimum of 1.0f, as some Linux setup seems to report <1.0f value and this breaks scaling border size. (#9369)
 //  2026-02-13: Inputs: systems other than X11 are back to starting mouse capture on mouse down (reverts 2025-02-26 change). Only X11 requires waiting for a drag by default (not ideal, but a better default for X11 users). Added ImGui_ImplSDL2_SetMouseCaptureMode() for X11 debugger users. (#3650, #6410, #9235)
 //  2026-01-15: Changed GetClipboardText() handler to return nullptr on error aka clipboard contents is not text. Consistent with other backends. (#9168)
 //  2025-09-24: Skip using the SDL_GetGlobalMouseState() state when one of our window is hovered, as the SDL_MOUSEMOTION data is reliable. Fix macOS notch mouse coordinates issue in fullscreen mode + better perf on X11. (#7919, #7786)
@@ -133,10 +136,18 @@
 #endif
 #define SDL_HAS_PER_MONITOR_DPI             SDL_VERSION_ATLEAST(2,0,4)
 #define SDL_HAS_VULKAN                      SDL_VERSION_ATLEAST(2,0,6)
+#if defined(__APPLE__)
+#define SDL_HAS_METAL                       SDL_VERSION_ATLEAST(2,0,14)
+#else
+#define SDL_HAS_METAL                       0
+#endif
 #define SDL_HAS_OPEN_URL                    SDL_VERSION_ATLEAST(2,0,14)
 #if SDL_HAS_VULKAN
 #include <SDL_vulkan.h>
 #endif
+#if SDL_HAS_METAL
+#include <SDL_metal.h>
+#endif
 
 // SDL Data
 struct ImGui_ImplSDL2_Data
@@ -146,7 +157,8 @@ struct ImGui_ImplSDL2_Data
     SDL_Renderer*           Renderer;
     Uint64                  Time;
     char*                   ClipboardTextData;
-    char                    BackendPlatformName[48];
+    char                    BackendPlatformName[64];
+    bool                    IsWayland;
 
     // Mouse handling
     Uint32                  MouseWindowID;
@@ -203,6 +215,18 @@ static void ImGui_ImplSDL2_PlatformSetImeData(ImGuiContext*, ImGuiViewport*, ImG
         r.w = 1;
         r.h = (int)data->InputLineHeight;
         SDL_SetTextInputRect(&r);
+
+#ifdef __ANDROID__
+        // SDL_StartTextInput() is needed on Android (and some other platforms) to show the on-screen keyboard. (#7636, #9474, #6306)
+        // It was removed in a7703fe6 due to concerns about its relation to desktop IME, but is required on mobile.
+        SDL_StartTextInput();
+#endif
+    }
+    else
+    {
+#ifdef __ANDROID__
+        SDL_StopTextInput();
+#endif
     }
 }
 
@@ -498,11 +522,12 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void
     SDL_version ver_runtime;
     SDL_VERSION(&ver_compiled);
     SDL_GetVersion(&ver_runtime);
+    const char* sdl_video_driver = SDL_GetCurrentVideoDriver();
 
     // Setup backend capabilities flags
     ImGui_ImplSDL2_Data* bd = IM_NEW(ImGui_ImplSDL2_Data)();
-    snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_sdl2 (%u.%u.%u, %u.%u.%u)",
-        ver_compiled.major, ver_compiled.minor, ver_compiled.patch, ver_runtime.major, ver_runtime.minor, ver_runtime.patch);
+    snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_sdl2 (%u.%u.%u, %u.%u.%u) (%s)",
+        ver_compiled.major, ver_compiled.minor, ver_compiled.patch, ver_runtime.major, ver_runtime.minor, ver_runtime.patch, sdl_video_driver);
     io.BackendPlatformUserData = (void*)bd;
     io.BackendPlatformName = bd->BackendPlatformName;
     io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;           // We can honor GetMouseCursor() values (optional)
@@ -511,16 +536,16 @@ static bool ImGui_ImplSDL2_Init(SDL_Window* window, SDL_Renderer* renderer, void
     bd->Window = window;
     bd->WindowID = SDL_GetWindowID(window);
     bd->Renderer = renderer;
+    bd->IsWayland = strcmp(sdl_video_driver, "Wayland") == 0;
 
     // Check and store if we are on a SDL backend that supports SDL_GetGlobalMouseState() and SDL_CaptureMouse()
     // ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)
     bd->MouseCanUseGlobalState = false;
     bd->MouseCaptureMode = ImGui_ImplSDL2_MouseCaptureMode_Disabled;
 #if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
-    const char* sdl_backend = SDL_GetCurrentVideoDriver();
     const char* capture_and_global_state_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };
     for (const char* item : capture_and_global_state_whitelist)
-        if (strncmp(sdl_backend, item, strlen(item)) == 0)
+        if (strncmp(sdl_video_driver, item, strlen(item)) == 0)
         {
             bd->MouseCanUseGlobalState = true;
             bd->MouseCaptureMode = (strcmp(item, "x11") == 0) ? ImGui_ImplSDL2_MouseCaptureMode_EnabledAfterDrag : ImGui_ImplSDL2_MouseCaptureMode_Enabled;
@@ -748,6 +773,7 @@ float ImGui_ImplSDL2_GetContentScaleForWindow(SDL_Window* window)
     return ImGui_ImplSDL2_GetContentScaleForDisplay(SDL_GetWindowDisplayIndex(window));
 }
 
+// SDL_GetDisplayDPI() seems rather unreliable on Linux.
 float ImGui_ImplSDL2_GetContentScaleForDisplay(int display_index)
 {
     const char* sdl_driver = SDL_GetCurrentVideoDriver();
@@ -757,7 +783,11 @@ float ImGui_ImplSDL2_GetContentScaleForDisplay(int display_index)
 #if !defined(__APPLE__) && !defined(__EMSCRIPTEN__) && !defined(__ANDROID__)
     float dpi = 0.0f;
     if (SDL_GetDisplayDPI(display_index, &dpi, nullptr, nullptr) == 0)
+    {
+        if (dpi < 96.0f)
+            dpi = 96.0f;
         return dpi / 96.0f;
+    }
 #endif
 #endif
     IM_UNUSED(display_index);
@@ -878,13 +908,17 @@ static void ImGui_ImplSDL2_GetWindowSizeAndFramebufferScale(SDL_Window* window,
 #if SDL_HAS_VULKAN
     else if (SDL_GetWindowFlags(window) & SDL_WINDOW_VULKAN)
         SDL_Vulkan_GetDrawableSize(window, &display_w, &display_h);
+#endif
+#if SDL_HAS_METAL
+    else if (SDL_GetWindowFlags(window) & SDL_WINDOW_METAL)
+        SDL_Metal_GetDrawableSize(window, &display_w, &display_h);
 #endif
     else
         SDL_GL_GetDrawableSize(window, &display_w, &display_h);
     if (out_size != nullptr)
         *out_size = ImVec2((float)w, (float)h);
     if (out_framebuffer_scale != nullptr)
-        *out_framebuffer_scale = (w > 0 && h > 0) ? ImVec2((float)display_w / w, (float)display_h / h) : ImVec2(1.0f, 1.0f);
+        *out_framebuffer_scale = (w > 0 && h > 0) ? ImVec2((float)display_w / (float)w, (float)display_h / (float)h) : ImVec2(1.0f, 1.0f);
 }
 
 void ImGui_ImplSDL2_NewFrame()
@@ -902,7 +936,7 @@ void ImGui_ImplSDL2_NewFrame()
     Uint64 current_time = SDL_GetPerformanceCounter();
     if (current_time <= bd->Time)
         current_time = bd->Time + 1;
-    io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
+    io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / (double)frequency) : (float)(1.0f / 60.0f);
     bd->Time = current_time;
 
     if (bd->MouseLastLeaveFrame && bd->MouseLastLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)

backends/imgui_impl_sdl3.cpp

@@ -111,7 +111,8 @@ struct ImGui_ImplSDL3_Data
     SDL_Renderer*           Renderer;
     Uint64                  Time;
     char*                   ClipboardTextData;
-    char                    BackendPlatformName[48];
+    char                    BackendPlatformName[64];
+    bool                    IsWayland;
 
     // IME handling
     SDL_Window*             ImeWindow;
@@ -502,11 +503,13 @@ static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void
     //SDL_SetHint(SDL_HINT_EVENT_LOGGING, "2");
 
     const int ver_linked = SDL_GetVersion();
+    const char* sdl_video_driver = SDL_GetCurrentVideoDriver();
 
     // Setup backend capabilities flags
     ImGui_ImplSDL3_Data* bd = IM_NEW(ImGui_ImplSDL3_Data)();
-    snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_sdl3 (%d.%d.%d; %d.%d.%d)",
-        SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_MICRO_VERSION, SDL_VERSIONNUM_MAJOR(ver_linked), SDL_VERSIONNUM_MINOR(ver_linked), SDL_VERSIONNUM_MICRO(ver_linked));
+    snprintf(bd->BackendPlatformName, sizeof(bd->BackendPlatformName), "imgui_impl_sdl3 (%d.%d.%d; %d.%d.%d) (%s)",
+        SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_MICRO_VERSION, SDL_VERSIONNUM_MAJOR(ver_linked), SDL_VERSIONNUM_MINOR(ver_linked), SDL_VERSIONNUM_MICRO(ver_linked),
+        sdl_video_driver);
     io.BackendPlatformUserData = (void*)bd;
     io.BackendPlatformName = bd->BackendPlatformName;
     io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;           // We can honor GetMouseCursor() values (optional)
@@ -515,16 +518,16 @@ static bool ImGui_ImplSDL3_Init(SDL_Window* window, SDL_Renderer* renderer, void
     bd->Window = window;
     bd->WindowID = SDL_GetWindowID(window);
     bd->Renderer = renderer;
+    bd->IsWayland = strcmp(sdl_video_driver, "wayland") == 0;
 
     // Check and store if we are on a SDL backend that supports SDL_GetGlobalMouseState() and SDL_CaptureMouse()
     // ("wayland" and "rpi" don't support it, but we chose to use a white-list instead of a black-list)
     bd->MouseCanUseGlobalState = false;
     bd->MouseCaptureMode = ImGui_ImplSDL3_MouseCaptureMode_Disabled;
 #if SDL_HAS_CAPTURE_AND_GLOBAL_MOUSE
-    const char* sdl_backend = SDL_GetCurrentVideoDriver();
     const char* capture_and_global_state_whitelist[] = { "windows", "cocoa", "x11", "DIVE", "VMAN" };
     for (const char* item : capture_and_global_state_whitelist)
-        if (strncmp(sdl_backend, item, strlen(item)) == 0)
+        if (strncmp(sdl_video_driver, item, strlen(item)) == 0)
         {
             bd->MouseCanUseGlobalState = true;
             bd->MouseCaptureMode = (strcmp(item, "x11") == 0) ? ImGui_ImplSDL3_MouseCaptureMode_EnabledAfterDrag : ImGui_ImplSDL3_MouseCaptureMode_Enabled;
@@ -686,8 +689,8 @@ static void ImGui_ImplSDL3_UpdateMouseData()
             int window_x, window_y;
             SDL_GetGlobalMouseState(&mouse_x, &mouse_y);
             SDL_GetWindowPosition(focused_window, &window_x, &window_y);
-            mouse_x -= window_x;
-            mouse_y -= window_y;
+            mouse_x -= (float)window_x;
+            mouse_y -= (float)window_y;
             io.AddMousePosEvent(mouse_x, mouse_y);
         }
     }
@@ -860,7 +863,7 @@ void ImGui_ImplSDL3_NewFrame()
     Uint64 current_time = SDL_GetPerformanceCounter();
     if (current_time <= bd->Time)
         current_time = bd->Time + 1;
-    io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / frequency) : (float)(1.0f / 60.0f);
+    io.DeltaTime = bd->Time > 0 ? (float)((double)(current_time - bd->Time) / (double)frequency) : (float)(1.0f / 60.0f);
     bd->Time = current_time;
 
     if (bd->MousePendingLeaveFrame && bd->MousePendingLeaveFrame >= ImGui::GetFrameCount() && bd->MouseButtonsDown == 0)

backends/imgui_impl_sdlgpu3.cpp

@@ -5,6 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'SDL_GPUTexture*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef! **IMPORTANT** Before 2025/08/08, ImTextureID was a reference to a SDL_GPUTextureSamplerBinding struct.
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplSDLGPU3_GetRenderState().
 
 // The aim of imgui_impl_sdlgpu3.h/.cpp is to be usable in your engine without any modification.
 // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
@@ -22,6 +23,8 @@
 //   Calling the function is MANDATORY, otherwise the ImGui will not upload neither the vertex nor the index buffer for the GPU. See imgui_impl_sdlgpu3.cpp for more info.
 
 // CHANGELOG
+//  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. Obsoleting samplers from ImGui_ImplSDLGPU3_RenderState. (#9378)
 //  2026-03-19: Fixed issue in ImGui_ImplSDLGPU3_DestroyTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295, #9310)
 //  2026-02-25: Removed unnecessary call to SDL_WaitForGPUIdle when releasing vertex/index buffers. (#9262)
 //  2025-11-26: macOS version can use MSL shaders in order to support macOS 10.14+ (vs Metallib shaders requiring macOS 14+). Requires calling SDL_CreateGPUDevice() with SDL_GPU_SHADERFORMAT_MSL.
@@ -59,6 +62,10 @@ struct ImGui_ImplSDLGPU3_Data
 {
     ImGui_ImplSDLGPU3_InitInfo   InitInfo;
 
+    // Render state
+    ImGui_ImplSDLGPU3_RenderState*  RenderState         = nullptr; // == ImGui::GetPlatformIO().Renderer_RenderState during rendering.
+    SDL_GPUSampler*                 CurrentSampler      = nullptr;
+
     // Graphics pipeline & shaders
     SDL_GPUShader*               VertexShader           = nullptr;
     SDL_GPUShader*               FragmentShader         = nullptr;
@@ -87,10 +94,15 @@ static ImGui_ImplSDLGPU3_Data* ImGui_ImplSDLGPU3_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplSDLGPU3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
-static void ImGui_ImplSDLGPU3_SetupRenderState(ImDrawData* draw_data, ImGui_ImplSDLGPU3_RenderState* render_state, SDL_GPUGraphicsPipeline* pipeline, SDL_GPUCommandBuffer* command_buffer, SDL_GPURenderPass* render_pass, ImGui_ImplSDLGPU3_FrameData* fd, uint32_t fb_width, uint32_t fb_height)
+ImGui_ImplSDLGPU3_RenderState* ImGui_ImplSDLGPU3_GetRenderState()
+{
+    return (ImGui_ImplSDLGPU3_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
+static void ImGui_ImplSDLGPU3_SetupRenderState(ImDrawData* draw_data, SDL_GPUGraphicsPipeline* pipeline, SDL_GPUCommandBuffer* command_buffer, SDL_GPURenderPass* render_pass, ImGui_ImplSDLGPU3_FrameData* fd, uint32_t fb_width, uint32_t fb_height)
 {
     ImGui_ImplSDLGPU3_Data* bd = ImGui_ImplSDLGPU3_GetBackendData();
-    render_state->SamplerCurrent = bd->TexSamplerLinear;
+    bd->CurrentSampler = bd->TexSamplerLinear;
 
     // Bind graphics pipeline
     SDL_BindGPUGraphicsPipeline(render_pass, pipeline);
@@ -158,8 +170,8 @@ static void CreateOrResizeBuffers(SDL_GPUBuffer** buffer, SDL_GPUTransferBuffer*
 void ImGui_ImplSDLGPU3_PrepareDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffer* command_buffer)
 {
     // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     if (fb_width <= 0 || fb_height <= 0 || draw_data->TotalVtxCount <= 0)
         return;
 
@@ -174,8 +186,8 @@ void ImGui_ImplSDLGPU3_PrepareDrawData(ImDrawData* draw_data, SDL_GPUCommandBuff
     ImGui_ImplSDLGPU3_InitInfo* v = &bd->InitInfo;
     ImGui_ImplSDLGPU3_FrameData* fd = &bd->MainWindowFrameData;
 
-    uint32_t vertex_size = draw_data->TotalVtxCount * sizeof(ImDrawVert);
-    uint32_t index_size  = draw_data->TotalIdxCount * sizeof(ImDrawIdx);
+    uint32_t vertex_size = (uint32_t)draw_data->TotalVtxCount * sizeof(ImDrawVert);
+    uint32_t index_size  = (uint32_t)draw_data->TotalIdxCount * sizeof(ImDrawIdx);
     if (fd->VertexBuffer == nullptr || fd->VertexBufferSize < vertex_size)
         CreateOrResizeBuffers(&fd->VertexBuffer, &fd->VertexTransferBuffer, &fd->VertexBufferSize, vertex_size, SDL_GPU_BUFFERUSAGE_VERTEX);
     if (fd->IndexBuffer == nullptr || fd->IndexBufferSize < index_size)
@@ -216,11 +228,16 @@ void ImGui_ImplSDLGPU3_PrepareDrawData(ImDrawData* draw_data, SDL_GPUCommandBuff
     SDL_EndGPUCopyPass(copy_pass);
 }
 
+// Draw callbacks
+static void ImGui_ImplSDLGPU3_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)    {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplSDLGPU3_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)    { ImGui_ImplSDLGPU3_Data* bd = ImGui_ImplSDLGPU3_GetBackendData(); bd->CurrentSampler = bd->TexSamplerLinear; }
+static void ImGui_ImplSDLGPU3_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)   { ImGui_ImplSDLGPU3_Data* bd = ImGui_ImplSDLGPU3_GetBackendData(); bd->CurrentSampler = bd->TexSamplerNearest; }
+
 void ImGui_ImplSDLGPU3_RenderDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffer* command_buffer, SDL_GPURenderPass* render_pass, SDL_GPUGraphicsPipeline* pipeline)
 {
     // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     if (fb_width <= 0 || fb_height <= 0)
         return;
 
@@ -238,11 +255,9 @@ void ImGui_ImplSDLGPU3_RenderDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffe
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     ImGui_ImplSDLGPU3_RenderState render_state;
     render_state.Device = bd->InitInfo.Device;
-    render_state.SamplerLinear = render_state.SamplerCurrent = bd->TexSamplerLinear;
-    render_state.SamplerNearest = bd->TexSamplerNearest;
-    platform_io.Renderer_RenderState = &render_state;
+    platform_io.Renderer_RenderState = bd->RenderState = &render_state;
 
-    ImGui_ImplSDLGPU3_SetupRenderState(draw_data, &render_state, pipeline, command_buffer, render_pass, fd, fb_width, fb_height);
+    ImGui_ImplSDLGPU3_SetupRenderState(draw_data, pipeline, command_buffer, render_pass, fd, fb_width, fb_height);
 
     // Render command lists
     // (Because we merged all buffers into a single one, we maintain our own offset into them)
@@ -256,9 +271,8 @@ void ImGui_ImplSDLGPU3_RenderDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffe
             if (pcmd->UserCallback != nullptr)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
-                    ImGui_ImplSDLGPU3_SetupRenderState(draw_data, &render_state, pipeline, command_buffer, render_pass, fd, fb_width, fb_height);
+                if (pcmd->UserCallback == ImGui_ImplSDLGPU3_DrawCallback_ResetRenderState)
+                    ImGui_ImplSDLGPU3_SetupRenderState(draw_data, pipeline, command_buffer, render_pass, fd, fb_width, fb_height);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
             }
@@ -271,8 +285,8 @@ void ImGui_ImplSDLGPU3_RenderDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffe
                 // Clamp to viewport as SDL_SetGPUScissor() won't accept values that are off bounds
                 if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
                 if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
-                if (clip_max.x > fb_width) { clip_max.x = (float)fb_width; }
-                if (clip_max.y > fb_height) { clip_max.y = (float)fb_height; }
+                if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
+                if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
                 if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
                     continue;
 
@@ -287,7 +301,7 @@ void ImGui_ImplSDLGPU3_RenderDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffe
                 // Bind DescriptorSet with font or user texture
                 SDL_GPUTextureSamplerBinding texture_sampler_binding;
                 texture_sampler_binding.texture = (SDL_GPUTexture*)(intptr_t)pcmd->GetTexID();
-                texture_sampler_binding.sampler = render_state.SamplerCurrent;
+                texture_sampler_binding.sampler = bd->CurrentSampler;
                 SDL_BindGPUFragmentSamplers(render_pass, 0, &texture_sampler_binding, 1);
 
                 // Draw
@@ -306,6 +320,8 @@ void ImGui_ImplSDLGPU3_RenderDrawData(ImDrawData* draw_data, SDL_GPUCommandBuffe
     // We perform a call to SDL_SetGPUScissor() to set back a full viewport which is likely to fix things for 99% users but technically this is not perfect. (See github #4644)
     SDL_Rect scissor_rect { 0, 0, fb_width, fb_height };
     SDL_SetGPUScissor(render_pass, &scissor_rect);
+
+    platform_io.Renderer_RenderState = bd->RenderState = nullptr;
 }
 
 static void ImGui_ImplSDLGPU3_DestroyTexture(ImTextureData* tex)
@@ -582,7 +598,7 @@ void ImGui_ImplSDLGPU3_CreateDeviceObjects()
 
     if (bd->TexSamplerLinear == nullptr)
     {
-        // Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
+        // Bilinear sampling is required.
         SDL_GPUSamplerCreateInfo sampler_info = {};
         sampler_info.min_filter = SDL_GPU_FILTER_LINEAR;
         sampler_info.mag_filter = SDL_GPU_FILTER_LINEAR;
@@ -656,6 +672,11 @@ bool ImGui_ImplSDLGPU3_Init(ImGui_ImplSDLGPU3_InitInfo* info)
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
     io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
 
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplSDLGPU3_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplSDLGPU3_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplSDLGPU3_DrawCallback_SetSamplerNearest;
+
     IM_ASSERT(info->Device != nullptr);
     IM_ASSERT(info->ColorTargetFormat != SDL_GPU_TEXTUREFORMAT_INVALID);
 

backends/imgui_impl_sdlgpu3.h

@@ -5,6 +5,7 @@
 //  [X] Renderer: User texture binding. Use 'SDL_GPUTexture*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef! **IMPORTANT** Before 2025/08/08, ImTextureID was a reference to a SDL_GPUTextureSamplerBinding struct.
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplSDLGPU3_GetRenderState().
 
 // The aim of imgui_impl_sdlgpu3.h/.cpp is to be usable in your engine without any modification.
 // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
@@ -57,9 +58,7 @@ IMGUI_IMPL_API void     ImGui_ImplSDLGPU3_UpdateTexture(ImTextureData* tex);
 struct ImGui_ImplSDLGPU3_RenderState
 {
     SDL_GPUDevice*      Device;
-    SDL_GPUSampler*     SamplerLinear;      // Bilinear filtering sampler
-    SDL_GPUSampler*     SamplerNearest;     // Nearest/point filtering sampler
-    SDL_GPUSampler*     SamplerCurrent;     // Current sampler (may be changed by callback)
 };
+IMGUI_IMPL_API ImGui_ImplSDLGPU3_RenderState* ImGui_ImplSDLGPU3_GetRenderState();
 
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_sdlrenderer2.cpp

@@ -14,8 +14,10 @@
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
 //  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+// Missing features or Issues:
+//  [ ] Renderer: Missing support for DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest callbacks: SDLRenderer2 does not support changing SDL_SCALE_MODE while rendering.
 
-// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
 // Learn about Dear ImGui:
 // - FAQ                  https://dearimgui.com/faq
@@ -24,6 +26,8 @@
 // - Introduction, links and more at the top of imgui.cpp
 
 // CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState (others cannot be supported). (#9378)
 //  2026-03-12: Fixed invalid assert in ImGui_ImplSDLRenderer2_UpdateTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295)
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-06-11: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplSDLRenderer2_CreateFontsTexture() and ImGui_ImplSDLRenderer2_DestroyFontsTexture().
@@ -51,7 +55,8 @@
 #endif
 
 // SDL
-#include <SDL.h>
+#include <SDL_render.h>
+#include <SDL_version.h>
 #if !SDL_VERSION_ATLEAST(2,0,17)
 #error This backend requires SDL 2.0.17+ because of SDL_RenderGeometry() function
 #endif
@@ -71,42 +76,12 @@ static ImGui_ImplSDLRenderer2_Data* ImGui_ImplSDLRenderer2_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer2_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplSDLRenderer2_RenderState* ImGui_ImplSDLRenderer2_GetRenderState()
+{
+    return (ImGui_ImplSDLRenderer2_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
 // Functions
-bool ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer)
-{
-    ImGuiIO& io = ImGui::GetIO();
-    IMGUI_CHECKVERSION();
-    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
-    IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
-
-    // Setup backend capabilities flags
-    ImGui_ImplSDLRenderer2_Data* bd = IM_NEW(ImGui_ImplSDLRenderer2_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_sdlrenderer2";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
-
-    bd->Renderer = renderer;
-
-    return true;
-}
-
-void ImGui_ImplSDLRenderer2_Shutdown()
-{
-    ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-
-    ImGui_ImplSDLRenderer2_DestroyDeviceObjects();
-
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
-    platform_io.ClearRendererHandlers();
-    IM_DELETE(bd);
-}
-
 static void ImGui_ImplSDLRenderer2_SetupRenderState(SDL_Renderer* renderer)
 {
     // Clear out any viewports and cliprect set by the user
@@ -122,6 +97,9 @@ void ImGui_ImplSDLRenderer2_NewFrame()
     IM_UNUSED(bd);
 }
 
+// Draw callbacks
+static void ImGui_ImplSDLRenderer2_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*) {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+
 void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
 {
     // If there's a scale factor set by the user, use that instead
@@ -184,8 +162,7 @@ void ImGui_ImplSDLRenderer2_RenderDrawData(ImDrawData* draw_data, SDL_Renderer*
             if (pcmd->UserCallback)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplSDLRenderer2_DrawCallback_ResetRenderState)
                     ImGui_ImplSDLRenderer2_SetupRenderState(renderer);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -242,8 +219,7 @@ void ImGui_ImplSDLRenderer2_UpdateTexture(ImTextureData* tex)
         IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
         IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
 
-        // Create texture
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Create texture (bilinear sampling is required)
         SDL_Texture* sdl_texture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, tex->Width, tex->Height);
         IM_ASSERT(sdl_texture != nullptr && "Backend failed to create texture!");
         SDL_UpdateTexture(sdl_texture, nullptr, tex->GetPixels(), tex->GetPitch());
@@ -293,6 +269,44 @@ void ImGui_ImplSDLRenderer2_DestroyDeviceObjects()
         }
 }
 
+bool ImGui_ImplSDLRenderer2_Init(SDL_Renderer* renderer)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+    IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
+
+    // Setup backend capabilities flags
+    ImGui_ImplSDLRenderer2_Data* bd = IM_NEW(ImGui_ImplSDLRenderer2_Data)();
+    io.BackendRendererUserData = (void*)bd;
+    io.BackendRendererName = "imgui_impl_sdlrenderer2";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
+
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplSDLRenderer2_DrawCallback_ResetRenderState;
+
+    bd->Renderer = renderer;
+
+    return true;
+}
+
+void ImGui_ImplSDLRenderer2_Shutdown()
+{
+    ImGui_ImplSDLRenderer2_Data* bd = ImGui_ImplSDLRenderer2_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+
+    ImGui_ImplSDLRenderer2_DestroyDeviceObjects();
+
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
+    platform_io.ClearRendererHandlers();
+    IM_DELETE(bd);
+}
+
 //-----------------------------------------------------------------------------
 
 #if defined(__clang__)

backends/imgui_impl_sdlrenderer2.h

@@ -14,6 +14,8 @@
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
 //  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+// Missing features or Issues:
+//  [ ] Renderer: Missing support for DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest callbacks: SDLRenderer2 does not support changing SDL_SCALE_MODE while rendering.
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -49,5 +51,6 @@ struct ImGui_ImplSDLRenderer2_RenderState
 {
     SDL_Renderer*       Renderer;
 };
+IMGUI_IMPL_API ImGui_ImplSDLRenderer2_RenderState* ImGui_ImplSDLRenderer2_GetRenderState();
 
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_sdlrenderer3.cpp

@@ -13,9 +13,9 @@
 //  [X] Renderer: User texture binding. Use 'SDL_Texture*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplSDLRenderer3_GetRenderState().
 
-// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
 // Learn about Dear ImGui:
 // - FAQ                  https://dearimgui.com/faq
@@ -24,6 +24,10 @@
 // - Introduction, links and more at the top of imgui.cpp
 
 // CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2026-09-17: Restore modified texture scale modes at the end of RenderDrawData(). Added DrawCallback_SetSamplerFromTex support. Added CurrentScaleMode in ImGui_ImplSDLRenderer3_RenderState (#9543, #9378)
+//  2026-07-15: Fixed default sampler state to be linear (broken 2026-04-23). (#9470, #9378)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
 //  2026-03-12: Fixed invalid assert in ImGui_ImplSDLRenderer3_UpdateTexture() if ImTextureID_Invalid is defined to be != 0, which became the default since 2026-03-12. (#9295)
 //  2025-09-18: Call platform_io.ClearRendererHandlers() on shutdown.
 //  2025-06-11: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. Removed ImGui_ImplSDLRenderer3_CreateFontsTexture() and ImGui_ImplSDLRenderer3_DestroyFontsTexture().
@@ -48,16 +52,24 @@
 #endif
 
 // SDL
-#include <SDL3/SDL.h>
+#include <SDL3/SDL_render.h>
+#include <SDL3/SDL_version.h>
 #if !SDL_VERSION_ATLEAST(3,0,0)
 #error This backend requires SDL 3.0.0+
 #endif
 
 // SDL_Renderer data
+struct ImGui_ImplSDLRenderer3_TexScaleModeEntry
+{
+    SDL_Texture*    Texture;
+    SDL_ScaleMode   ScaleModeBackup;
+};
+
 struct ImGui_ImplSDLRenderer3_Data
 {
     SDL_Renderer*           Renderer;       // Main viewport's renderer
     ImVector<SDL_FColor>    ColorBuffer;
+    ImVector<ImGui_ImplSDLRenderer3_TexScaleModeEntry> TexScaleModeBackups;  // Backup of texture scale modes
 
     ImGui_ImplSDLRenderer3_Data()   { memset((void*)this, 0, sizeof(*this)); }
 };
@@ -69,48 +81,21 @@ static ImGui_ImplSDLRenderer3_Data* ImGui_ImplSDLRenderer3_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplSDLRenderer3_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplSDLRenderer3_RenderState* ImGui_ImplSDLRenderer3_GetRenderState()
+{
+    return (ImGui_ImplSDLRenderer3_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
 // Functions
-bool ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer)
-{
-    ImGuiIO& io = ImGui::GetIO();
-    IMGUI_CHECKVERSION();
-    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
-    IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
-
-    // Setup backend capabilities flags
-    ImGui_ImplSDLRenderer3_Data* bd = IM_NEW(ImGui_ImplSDLRenderer3_Data)();
-    io.BackendRendererUserData = (void*)bd;
-    io.BackendRendererName = "imgui_impl_sdlrenderer3";
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
-    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
-
-    bd->Renderer = renderer;
-
-    return true;
-}
-
-void ImGui_ImplSDLRenderer3_Shutdown()
-{
-    ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
-    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
-    ImGuiIO& io = ImGui::GetIO();
-    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
-
-    ImGui_ImplSDLRenderer3_DestroyDeviceObjects();
-
-    io.BackendRendererName = nullptr;
-    io.BackendRendererUserData = nullptr;
-    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
-    platform_io.ClearRendererHandlers();
-    IM_DELETE(bd);
-}
-
 static void ImGui_ImplSDLRenderer3_SetupRenderState(SDL_Renderer* renderer)
 {
+    ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState();
+
     // Clear out any viewports and cliprect set by the user
     // FIXME: Technically speaking there are lots of other things we could backup/setup/restore during our render process.
     SDL_SetRenderViewport(renderer, nullptr);
     SDL_SetRenderClipRect(renderer, nullptr);
+    render_state->CurrentScaleMode = SDL_SCALEMODE_LINEAR;
 }
 
 void ImGui_ImplSDLRenderer3_NewFrame()
@@ -138,6 +123,64 @@ static int SDL_RenderGeometryRaw8BitColor(SDL_Renderer* renderer, ImVector<SDL_F
     return SDL_RenderGeometryRaw(renderer, texture, xy, xy_stride, color3, sizeof(*color3), uv, uv_stride, num_vertices, indices, num_indices, size_indices);
 }
 
+// Draw callbacks
+static void ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)   {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)   { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_LINEAR; }
+static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_NEAREST; }
+static void ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerFromTex(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplSDLRenderer3_RenderState* render_state = ImGui_ImplSDLRenderer3_GetRenderState(); render_state->CurrentScaleMode = SDL_SCALEMODE_INVALID; } // SDL_SCALEMODE_INVALID = use/keep value in texture.
+
+// SDLRenderer has various design issues which makes it hard to do it compared to regular graphics API.
+// - scale/filtering mode is tied to a texture.
+// - scale/filtering mode is not queued as part of the SDL_RenderGeometryXXX commands, so a change in one texture requires a flush.
+static void ImGui_ImplSDLRenderer3_TexScaleModeUpdate(SDL_Renderer* renderer, SDL_Texture* tex, SDL_ScaleMode desired_scale_mode)
+{
+    ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
+    if (desired_scale_mode != SDL_SCALEMODE_INVALID)
+    {
+        // Enforce a scale mode
+        SDL_ScaleMode tex_scale_mode = desired_scale_mode;
+        if (!SDL_GetTextureScaleMode(tex, &tex_scale_mode) || tex_scale_mode == desired_scale_mode)
+            return;
+        SDL_FlushRenderer(renderer);
+        SDL_SetTextureScaleMode(tex, desired_scale_mode);
+
+        // Store backup of old scale mode (FIXME-OPT)
+        for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)
+            if (entry.Texture == tex)
+            {
+                if (entry.ScaleModeBackup == SDL_SCALEMODE_INVALID)
+                    entry.ScaleModeBackup = tex_scale_mode;
+                return;
+            }
+        ImGui_ImplSDLRenderer3_TexScaleModeEntry entry = { tex, tex_scale_mode };
+        bd->TexScaleModeBackups.push_back(entry);
+    }
+    else
+    {
+        // Use scale mode that was set in texture by user. If there is an entry, restore it and clear the entry.
+        for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)
+            if (entry.Texture == tex && entry.ScaleModeBackup != SDL_SCALEMODE_INVALID)
+            {
+                SDL_FlushRenderer(renderer);
+                SDL_SetTextureScaleMode(tex, entry.ScaleModeBackup);
+                entry.ScaleModeBackup = SDL_SCALEMODE_INVALID;
+                return;
+            }
+    }
+}
+
+static void ImGui_ImplSDLRenderer3_TexScaleModeRestoreBackups(SDL_Renderer* renderer)
+{
+    ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
+    if (bd->TexScaleModeBackups.Size == 0)
+        return;
+    SDL_FlushRenderer(renderer);
+    for (ImGui_ImplSDLRenderer3_TexScaleModeEntry& entry : bd->TexScaleModeBackups)
+        if (entry.ScaleModeBackup != SDL_SCALEMODE_INVALID)
+            SDL_SetTextureScaleMode(entry.Texture, entry.ScaleModeBackup);
+    bd->TexScaleModeBackups.resize(0);
+}
+
 void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer* renderer)
 {
     ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
@@ -179,15 +222,16 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer*
     SDL_GetRenderViewport(renderer, &old.Viewport);
     SDL_GetRenderClipRect(renderer, &old.ClipRect);
 
-    // Setup desired state
-    ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
-
     // Setup render state structure (for callbacks and custom texture bindings)
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     ImGui_ImplSDLRenderer3_RenderState render_state;
     render_state.Renderer = renderer;
     platform_io.Renderer_RenderState = &render_state;
 
+    // Setup desired state
+    ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
+    IM_ASSERT(bd->TexScaleModeBackups.Size == 0);
+
     // Will project scissor/clipping rectangles into framebuffer space
     ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
     ImVec2 clip_scale = render_scale;
@@ -204,8 +248,7 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer*
             if (pcmd->UserCallback)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState)
                     ImGui_ImplSDLRenderer3_SetupRenderState(renderer);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -221,16 +264,17 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer*
                 if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
                 if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
                     continue;
-
                 SDL_Rect r = { (int)(clip_min.x), (int)(clip_min.y), (int)(clip_max.x - clip_min.x), (int)(clip_max.y - clip_min.y) };
                 SDL_SetRenderClipRect(renderer, &r);
 
+                // Setup texture scale/filtering mode
+                SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
+                ImGui_ImplSDLRenderer3_TexScaleModeUpdate(renderer, tex, render_state.CurrentScaleMode);
+
+                // Draw
                 const float* xy = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, pos));
                 const float* uv = (const float*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, uv));
-                const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col)); // SDL 2.0.19+
-
-                // Bind texture, Draw
-                SDL_Texture* tex = (SDL_Texture*)pcmd->GetTexID();
+                const SDL_Color* color = (const SDL_Color*)(const void*)((const char*)(vtx_buffer + pcmd->VtxOffset) + offsetof(ImDrawVert, col));
                 SDL_RenderGeometryRaw8BitColor(renderer, bd->ColorBuffer, tex,
                     xy, (int)sizeof(ImDrawVert),
                     color, (int)sizeof(ImDrawVert),
@@ -245,6 +289,7 @@ void ImGui_ImplSDLRenderer3_RenderDrawData(ImDrawData* draw_data, SDL_Renderer*
     // Restore modified SDL_Renderer state
     SDL_SetRenderViewport(renderer, old.ViewportEnabled ? &old.Viewport : nullptr);
     SDL_SetRenderClipRect(renderer, old.ClipEnabled ? &old.ClipRect : nullptr);
+    ImGui_ImplSDLRenderer3_TexScaleModeRestoreBackups(renderer);
 }
 
 void ImGui_ImplSDLRenderer3_UpdateTexture(ImTextureData* tex)
@@ -258,8 +303,7 @@ void ImGui_ImplSDLRenderer3_UpdateTexture(ImTextureData* tex)
         IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr);
         IM_ASSERT(tex->Format == ImTextureFormat_RGBA32);
 
-        // Create texture
-        // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+        // Create texture (bilinear sampling is required)
         SDL_Texture* sdl_texture = SDL_CreateTexture(bd->Renderer, SDL_PIXELFORMAT_RGBA32, SDL_TEXTUREACCESS_STATIC, tex->Width, tex->Height);
         IM_ASSERT(sdl_texture != nullptr && "Backend failed to create texture!");
         SDL_UpdateTexture(sdl_texture, nullptr, tex->GetPixels(), tex->GetPitch());
@@ -309,6 +353,47 @@ void ImGui_ImplSDLRenderer3_DestroyDeviceObjects()
         }
 }
 
+bool ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer)
+{
+    ImGuiIO& io = ImGui::GetIO();
+    IMGUI_CHECKVERSION();
+    IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!");
+    IM_ASSERT(renderer != nullptr && "SDL_Renderer not initialized!");
+
+    // Setup backend capabilities flags
+    ImGui_ImplSDLRenderer3_Data* bd = IM_NEW(ImGui_ImplSDLRenderer3_Data)();
+    io.BackendRendererUserData = (void*)bd;
+    io.BackendRendererName = "imgui_impl_sdlrenderer3";
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
+    io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
+
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplSDLRenderer3_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerNearest;
+    platform_io.DrawCallback_SetSamplerFromTex = ImGui_ImplSDLRenderer3_DrawCallback_SetSamplerFromTex;
+
+    bd->Renderer = renderer;
+
+    return true;
+}
+
+void ImGui_ImplSDLRenderer3_Shutdown()
+{
+    ImGui_ImplSDLRenderer3_Data* bd = ImGui_ImplSDLRenderer3_GetBackendData();
+    IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?");
+    ImGuiIO& io = ImGui::GetIO();
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+
+    ImGui_ImplSDLRenderer3_DestroyDeviceObjects();
+
+    io.BackendRendererName = nullptr;
+    io.BackendRendererUserData = nullptr;
+    io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures);
+    platform_io.ClearRendererHandlers();
+    IM_DELETE(bd);
+}
+
 //-----------------------------------------------------------------------------
 
 #if defined(__clang__)

backends/imgui_impl_sdlrenderer3.h

@@ -13,9 +13,9 @@
 //  [X] Renderer: User texture binding. Use 'SDL_Texture*' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplSDLRenderer3_GetRenderState().
 
-// You can copy and use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
+// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
 // Learn about Dear ImGui:
 // - FAQ                  https://dearimgui.com/faq
@@ -27,7 +27,8 @@
 #include "imgui.h"      // IMGUI_IMPL_API
 #ifndef IMGUI_DISABLE
 
-struct SDL_Renderer;
+// For SDL_ScaleMode which cannot be forward declared.
+#include <SDL3/SDL_render.h>
 
 // Follow "Getting Started" link and check examples/ folder to learn about using backends!
 IMGUI_IMPL_API bool     ImGui_ImplSDLRenderer3_Init(SDL_Renderer* renderer);
@@ -48,6 +49,8 @@ IMGUI_IMPL_API void     ImGui_ImplSDLRenderer3_UpdateTexture(ImTextureData* tex)
 struct ImGui_ImplSDLRenderer3_RenderState
 {
     SDL_Renderer*       Renderer;
+    SDL_ScaleMode       CurrentScaleMode;   // Current scale mode during render. Set to SDL_SCALEMODE_INVALID to use "SetSamplerFromTex" mode.
 };
+IMGUI_IMPL_API ImGui_ImplSDLRenderer3_RenderState* ImGui_ImplSDLRenderer3_GetRenderState();
 
 #endif // #ifndef IMGUI_DISABLE

backends/imgui_impl_vulkan.cpp

@@ -2,10 +2,10 @@
 // This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [!] Renderer: User texture binding. Use 'VkDescriptorSet' as texture identifier. Call ImGui_ImplVulkan_AddTexture() to register one. Read the FAQ about ImTextureID/ImTextureRef + https://github.com/ocornut/imgui/pull/914 for discussions.
+//  [!] Renderer: User texture binding. Use a VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE 'VkDescriptorSet' as texture identifier. Call ImGui_ImplVulkan_AddTexture() to register one. Read the FAQ about ImTextureID/ImTextureRef + https://github.com/ocornut/imgui/pull/914 for discussions.
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplVulkan_GetRenderState().
 
 // The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
 // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
@@ -27,6 +27,18 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-09-03: Added for support for multiple Vulkan contexts with custom loaders. (#6616)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
+//  2026-04-22: *BREAKING CHANGE* redesigned to use separate ImageView + Sampler instead of Combined Image Sampler. This change allows us to facilitate changing samplers, in line with other backends.
+//              - When registering custom textures: changed ImGui_ImplVulkan_AddTexture() signature to remove Sampler.
+//                - Before: ImGui_ImplVulkan_AddTexture(VkSampler, VkImageView, VkImageLayout)
+//                - After:  ImGui_ImplVulkan_AddTexture(VkImageView, VkImageLayout)
+//                - Kept inline redirection function that ignores the sampler.
+//              - When creating your own descriptor pool (instead of letting backend creates its own):
+//                - Before: need at least IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE descriptors of type VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER.
+//                - After:  need at least IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE descriptors of type VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE.
+//                                      + IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE       descriptors of type VK_DESCRIPTOR_TYPE_SAMPLER.
 //  2026-03-11: Vulkan: Added ImGui_ImplVulkan_PipelineInfo::ExtraDynamicStates[] to allow specifying extra dynamic states to add when creating the VkPipeline. (#9211)
 //  2025-09-26: [Helpers] *BREAKING CHANGE*: Vulkan: Helper ImGui_ImplVulkanH_DestroyWindow() does not call vkDestroySurfaceKHR(): as surface is created by caller of ImGui_ImplVulkanH_CreateOrResizeWindow(), it is more consistent that we don't destroy it. (#9163)
 //  2026-01-05: [Helpers] *BREAKING CHANGE*: Vulkan: Helper for creating render pass uses ImGui_ImplVulkanH_Window::AttachmentDesc to create render pass. Removed ClearEnabled. (#9152)
@@ -220,10 +232,28 @@ static bool g_FunctionsLoaded = true;
     IMGUI_VULKAN_FUNC_MAP_MACRO(vkUpdateDescriptorSets) \
     IMGUI_VULKAN_FUNC_MAP_MACRO(vkWaitForFences)
 
+struct ImGui_ImplVulkan_Functions
+{
 // Define function pointers
-#define IMGUI_VULKAN_FUNC_DEF(func) static PFN_##func func;
+#define IMGUI_VULKAN_FUNC_DEF(func) PFN_##func pfn_##func;
 IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_DEF)
 #undef IMGUI_VULKAN_FUNC_DEF
+};
+
+// Globally available function pointers used for initialization of the backend data
+static ImGui_ImplVulkan_Functions   ImGuiImplVulkanFuncs;
+
+// Multi Vulkan contexts support: wrap each Vulkan function pointer to properly dispatch it using the current backend data
+static ImGui_ImplVulkan_Functions&  ImGui_ImplVulkan_GetFunctions();
+#define IMGUI_VULKAN_FUNC_WRAPPER(func) \
+    template<typename... Args> \
+    auto func(Args&&... args) -> decltype(ImGui_ImplVulkan_GetFunctions().pfn_##func(args...)) \
+    { \
+        return ImGui_ImplVulkan_GetFunctions().pfn_##func(args...); \
+    }
+IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_WRAPPER)
+#undef IMGUI_VULKAN_FUNC_WRAPPER
+
 #endif // IMGUI_IMPL_VULKAN_USE_LOADER
 
 #ifdef IMGUI_IMPL_VULKAN_HAS_DYNAMIC_RENDERING
@@ -266,10 +296,12 @@ struct ImGui_ImplVulkan_Texture
 struct ImGui_ImplVulkan_Data
 {
     ImGui_ImplVulkan_InitInfo   VulkanInitInfo;
+    ImGui_ImplVulkan_RenderState* RenderState;          // == ImGui::GetPlatformIO().Renderer_RenderState during rendering.
     VkDeviceSize                BufferMemoryAlignment;
     VkDeviceSize                NonCoherentAtomSize;
     VkPipelineCreateFlags       PipelineCreateFlags;
-    VkDescriptorSetLayout       DescriptorSetLayout;
+    VkDescriptorSetLayout       DescriptorSetLayoutTexture;
+    VkDescriptorSetLayout       DescriptorSetLayoutSampler;
     VkPipelineLayout            PipelineLayout;
     VkPipeline                  Pipeline;               // pipeline for main render pass (created by app)
     VkShaderModule              ShaderModuleVert;
@@ -278,13 +310,21 @@ struct ImGui_ImplVulkan_Data
     ImVector<VkFormat>          PipelineRenderingCreateInfoColorAttachmentFormats; // Deep copy of format array
 
     // Texture management
-    VkSampler                   TexSamplerLinear;
+    VkSampler                   SamplerLinear;
+    VkSampler                   SamplerNearest;
+    VkDescriptorSet             SamplerLinearDS;
+    VkDescriptorSet             SamplerNearestDS;
     VkCommandPool               TexCommandPool;
     VkCommandBuffer             TexCommandBuffer;
 
     // Render buffers for main window
     ImGui_ImplVulkan_WindowRenderBuffers MainWindowRenderBuffers;
 
+    // Vulkan function pointers loaded for this context
+#ifdef IMGUI_IMPL_VULKAN_USE_LOADER
+    ImGui_ImplVulkan_Functions  Functions;
+#endif
+
     ImGui_ImplVulkan_Data()
     {
         memset((void*)this, 0, sizeof(*this));
@@ -318,7 +358,7 @@ void main()
 */
 static uint32_t __glsl_shader_vert_spv[] =
 {
-    0x07230203,0x00010000,0x00080001,0x0000002e,0x00000000,0x00020011,0x00000001,0x0006000b,
+    0x07230203,0x00010000,0x0008000b,0x0000002e,0x00000000,0x00020011,0x00000001,0x0006000b,
     0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
     0x000a000f,0x00000000,0x00000004,0x6e69616d,0x00000000,0x0000000b,0x0000000f,0x00000015,
     0x0000001b,0x0000001c,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
@@ -331,10 +371,10 @@ static uint32_t __glsl_shader_vert_spv[] =
     0x00050006,0x0000001e,0x00000000,0x61635375,0x0000656c,0x00060006,0x0000001e,0x00000001,
     0x61725475,0x616c736e,0x00006574,0x00030005,0x00000020,0x00006370,0x00040047,0x0000000b,
     0x0000001e,0x00000000,0x00040047,0x0000000f,0x0000001e,0x00000002,0x00040047,0x00000015,
-    0x0000001e,0x00000001,0x00050048,0x00000019,0x00000000,0x0000000b,0x00000000,0x00030047,
-    0x00000019,0x00000002,0x00040047,0x0000001c,0x0000001e,0x00000000,0x00050048,0x0000001e,
-    0x00000000,0x00000023,0x00000000,0x00050048,0x0000001e,0x00000001,0x00000023,0x00000008,
-    0x00030047,0x0000001e,0x00000002,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,
+    0x0000001e,0x00000001,0x00030047,0x00000019,0x00000002,0x00050048,0x00000019,0x00000000,
+    0x0000000b,0x00000000,0x00040047,0x0000001c,0x0000001e,0x00000000,0x00030047,0x0000001e,
+    0x00000002,0x00050048,0x0000001e,0x00000000,0x00000023,0x00000000,0x00050048,0x0000001e,
+    0x00000001,0x00000023,0x00000008,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,
     0x00030016,0x00000006,0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040017,
     0x00000008,0x00000006,0x00000002,0x0004001e,0x00000009,0x00000007,0x00000008,0x00040020,
     0x0000000a,0x00000003,0x00000009,0x0004003b,0x0000000a,0x0000000b,0x00000003,0x00040015,
@@ -366,39 +406,44 @@ static uint32_t __glsl_shader_vert_spv[] =
 /*
 #version 450 core
 layout(location = 0) out vec4 fColor;
-layout(set=0, binding=0) uniform sampler2D sTexture;
+layout(set=0, binding=0) uniform texture2D _Texture;
+layout(set=1, binding=0) uniform sampler _Sampler;
 layout(location = 0) in struct { vec4 Color; vec2 UV; } In;
 void main()
 {
-    fColor = In.Color * texture(sTexture, In.UV.st);
+    fColor = In.Color * texture(sampler2D(_Texture, _Sampler), In.UV.st);
 }
 */
 static uint32_t __glsl_shader_frag_spv[] =
 {
-    0x07230203,0x00010000,0x00080001,0x0000001e,0x00000000,0x00020011,0x00000001,0x0006000b,
+    0x07230203,0x00010000,0x0008000b,0x00000023,0x00000000,0x00020011,0x00000001,0x0006000b,
     0x00000001,0x4c534c47,0x6474732e,0x3035342e,0x00000000,0x0003000e,0x00000000,0x00000001,
     0x0007000f,0x00000004,0x00000004,0x6e69616d,0x00000000,0x00000009,0x0000000d,0x00030010,
     0x00000004,0x00000007,0x00030003,0x00000002,0x000001c2,0x00040005,0x00000004,0x6e69616d,
     0x00000000,0x00040005,0x00000009,0x6c6f4366,0x0000726f,0x00030005,0x0000000b,0x00000000,
     0x00050006,0x0000000b,0x00000000,0x6f6c6f43,0x00000072,0x00040006,0x0000000b,0x00000001,
-    0x00005655,0x00030005,0x0000000d,0x00006e49,0x00050005,0x00000016,0x78655473,0x65727574,
-    0x00000000,0x00040047,0x00000009,0x0000001e,0x00000000,0x00040047,0x0000000d,0x0000001e,
-    0x00000000,0x00040047,0x00000016,0x00000022,0x00000000,0x00040047,0x00000016,0x00000021,
-    0x00000000,0x00020013,0x00000002,0x00030021,0x00000003,0x00000002,0x00030016,0x00000006,
-    0x00000020,0x00040017,0x00000007,0x00000006,0x00000004,0x00040020,0x00000008,0x00000003,
-    0x00000007,0x0004003b,0x00000008,0x00000009,0x00000003,0x00040017,0x0000000a,0x00000006,
-    0x00000002,0x0004001e,0x0000000b,0x00000007,0x0000000a,0x00040020,0x0000000c,0x00000001,
-    0x0000000b,0x0004003b,0x0000000c,0x0000000d,0x00000001,0x00040015,0x0000000e,0x00000020,
-    0x00000001,0x0004002b,0x0000000e,0x0000000f,0x00000000,0x00040020,0x00000010,0x00000001,
-    0x00000007,0x00090019,0x00000013,0x00000006,0x00000001,0x00000000,0x00000000,0x00000000,
-    0x00000001,0x00000000,0x0003001b,0x00000014,0x00000013,0x00040020,0x00000015,0x00000000,
-    0x00000014,0x0004003b,0x00000015,0x00000016,0x00000000,0x0004002b,0x0000000e,0x00000018,
-    0x00000001,0x00040020,0x00000019,0x00000001,0x0000000a,0x00050036,0x00000002,0x00000004,
-    0x00000000,0x00000003,0x000200f8,0x00000005,0x00050041,0x00000010,0x00000011,0x0000000d,
-    0x0000000f,0x0004003d,0x00000007,0x00000012,0x00000011,0x0004003d,0x00000014,0x00000017,
-    0x00000016,0x00050041,0x00000019,0x0000001a,0x0000000d,0x00000018,0x0004003d,0x0000000a,
-    0x0000001b,0x0000001a,0x00050057,0x00000007,0x0000001c,0x00000017,0x0000001b,0x00050085,
-    0x00000007,0x0000001d,0x00000012,0x0000001c,0x0003003e,0x00000009,0x0000001d,0x000100fd,
+    0x00005655,0x00030005,0x0000000d,0x00006e49,0x00050005,0x00000015,0x7865545f,0x65727574,
+    0x00000000,0x00050005,0x00000019,0x6d61535f,0x72656c70,0x00000000,0x00040047,0x00000009,
+    0x0000001e,0x00000000,0x00040047,0x0000000d,0x0000001e,0x00000000,0x00040047,0x00000015,
+    0x00000021,0x00000000,0x00040047,0x00000015,0x00000022,0x00000000,0x00040047,0x00000019,
+    0x00000021,0x00000000,0x00040047,0x00000019,0x00000022,0x00000001,0x00020013,0x00000002,
+    0x00030021,0x00000003,0x00000002,0x00030016,0x00000006,0x00000020,0x00040017,0x00000007,
+    0x00000006,0x00000004,0x00040020,0x00000008,0x00000003,0x00000007,0x0004003b,0x00000008,
+    0x00000009,0x00000003,0x00040017,0x0000000a,0x00000006,0x00000002,0x0004001e,0x0000000b,
+    0x00000007,0x0000000a,0x00040020,0x0000000c,0x00000001,0x0000000b,0x0004003b,0x0000000c,
+    0x0000000d,0x00000001,0x00040015,0x0000000e,0x00000020,0x00000001,0x0004002b,0x0000000e,
+    0x0000000f,0x00000000,0x00040020,0x00000010,0x00000001,0x00000007,0x00090019,0x00000013,
+    0x00000006,0x00000001,0x00000000,0x00000000,0x00000000,0x00000001,0x00000000,0x00040020,
+    0x00000014,0x00000000,0x00000013,0x0004003b,0x00000014,0x00000015,0x00000000,0x0002001a,
+    0x00000017,0x00040020,0x00000018,0x00000000,0x00000017,0x0004003b,0x00000018,0x00000019,
+    0x00000000,0x0003001b,0x0000001b,0x00000013,0x0004002b,0x0000000e,0x0000001d,0x00000001,
+    0x00040020,0x0000001e,0x00000001,0x0000000a,0x00050036,0x00000002,0x00000004,0x00000000,
+    0x00000003,0x000200f8,0x00000005,0x00050041,0x00000010,0x00000011,0x0000000d,0x0000000f,
+    0x0004003d,0x00000007,0x00000012,0x00000011,0x0004003d,0x00000013,0x00000016,0x00000015,
+    0x0004003d,0x00000017,0x0000001a,0x00000019,0x00050056,0x0000001b,0x0000001c,0x00000016,
+    0x0000001a,0x00050041,0x0000001e,0x0000001f,0x0000000d,0x0000001d,0x0004003d,0x0000000a,
+    0x00000020,0x0000001f,0x00050057,0x00000007,0x00000021,0x0000001c,0x00000020,0x00050085,
+    0x00000007,0x00000022,0x00000012,0x00000021,0x0003003e,0x00000009,0x00000022,0x000100fd,
     0x00010038
 };
 
@@ -414,6 +459,21 @@ static ImGui_ImplVulkan_Data* ImGui_ImplVulkan_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplVulkan_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplVulkan_RenderState* ImGui_ImplVulkan_GetRenderState()
+{
+    return (ImGui_ImplVulkan_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
+#ifdef IMGUI_IMPL_VULKAN_USE_LOADER
+// Get the Vulkan function pointers used by the current backend.
+// If no backend is available, return the currently loaded global function pointers (ImGuiImplVulkanFuncs).
+static ImGui_ImplVulkan_Functions& ImGui_ImplVulkan_GetFunctions()
+{
+    ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
+    return bd ? bd->Functions : ImGuiImplVulkanFuncs;
+}
+#endif
+
 static uint32_t ImGui_ImplVulkan_MemoryType(VkMemoryPropertyFlags properties, uint32_t type_bits)
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
@@ -481,9 +541,7 @@ static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
 
     // Bind pipeline:
-    {
-        vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
-    }
+    vkCmdBindPipeline(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
 
     // Bind Vertex And Index Buffer:
     if (draw_data->TotalVtxCount > 0)
@@ -495,35 +553,48 @@ static void ImGui_ImplVulkan_SetupRenderState(ImDrawData* draw_data, VkPipeline
     }
 
     // Setup viewport:
-    {
-        VkViewport viewport;
-        viewport.x = 0;
-        viewport.y = 0;
-        viewport.width = (float)fb_width;
-        viewport.height = (float)fb_height;
-        viewport.minDepth = 0.0f;
-        viewport.maxDepth = 1.0f;
-        vkCmdSetViewport(command_buffer, 0, 1, &viewport);
-    }
+    VkViewport viewport;
+    viewport.x = 0;
+    viewport.y = 0;
+    viewport.width = (float)fb_width;
+    viewport.height = (float)fb_height;
+    viewport.minDepth = 0.0f;
+    viewport.maxDepth = 1.0f;
+    vkCmdSetViewport(command_buffer, 0, 1, &viewport);
 
     // Setup scale and translation:
     // Our visible imgui space lies from draw_data->DisplayPps (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps.
-    {
-        float constants[4];
-        constants[0] = 2.0f / draw_data->DisplaySize.x; // Scale
-        constants[1] = 2.0f / draw_data->DisplaySize.y;
-        constants[2] = -1.0f - draw_data->DisplayPos.x * constants[0]; // Translate
-        constants[3] = -1.0f - draw_data->DisplayPos.y * constants[1];
-        vkCmdPushConstants(command_buffer, bd->PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, sizeof(float) * 4, constants);
-    }
+    float constants[4];
+    constants[0] = 2.0f / draw_data->DisplaySize.x; // Scale
+    constants[1] = 2.0f / draw_data->DisplaySize.y;
+    constants[2] = -1.0f - draw_data->DisplayPos.x * constants[0]; // Translate
+    constants[3] = -1.0f - draw_data->DisplayPos.y * constants[1];
+    vkCmdPushConstants(command_buffer, bd->PipelineLayout, VK_SHADER_STAGE_VERTEX_BIT, 0, (uint32_t)sizeof(float) * 4, constants);
+
+    // Setup sampler
+    vkCmdBindDescriptorSets(bd->RenderState->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->PipelineLayout, 1, 1, &bd->SamplerLinearDS, 0, nullptr);
 }
 
+// Draw callbacks
+static void ImGui_ImplVulkan_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)     {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplVulkan_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)     { ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData(); vkCmdBindDescriptorSets(bd->RenderState->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->RenderState->PipelineLayout, 1, 1, &bd->SamplerLinearDS, 0, nullptr); }
+static void ImGui_ImplVulkan_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)    { ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData(); vkCmdBindDescriptorSets(bd->RenderState->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->RenderState->PipelineLayout, 1, 1, &bd->SamplerNearestDS, 0, nullptr); }
+
+// If you want to use your own sampler, you can create your own callback, access ImGui_ImplVulkan_RenderState for command-buffer and pipeline layout, e.g.
+/*
+void ImGui_ImplVulkan_DrawCallback_SetSamplerCustom(const ImDrawList*, const ImDrawCmd* cmd)
+{
+    ImGui_ImplVulkan_RenderState* render_state = (ImGui_ImplVulkan_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+    vkCmdBindDescriptorSets(render_state->CommandBuffer, VK_PIPELINE_BIND_POINT_GRAPHICS, render_state->PipelineLayout, 1, 1, (VkDescriptorSet*)cmd->UserCallbackData, 0, nullptr);
+}
+*/
+
 // Render function
 void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer command_buffer, VkPipeline pipeline)
 {
     // Avoid rendering when minimized, scale coordinates for retina displays (screen coordinates != framebuffer coordinates)
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     if (fb_width <= 0 || fb_height <= 0)
         return;
 
@@ -589,16 +660,16 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
         vkUnmapMemory(v->Device, rb->IndexBufferMemory);
     }
 
-    // Setup desired Vulkan state
-    ImGui_ImplVulkan_SetupRenderState(draw_data, pipeline, command_buffer, rb, fb_width, fb_height);
-
     // Setup render state structure (for callbacks and custom texture bindings)
     ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
     ImGui_ImplVulkan_RenderState render_state;
     render_state.CommandBuffer = command_buffer;
     render_state.Pipeline = pipeline;
     render_state.PipelineLayout = bd->PipelineLayout;
-    platform_io.Renderer_RenderState = &render_state;
+    platform_io.Renderer_RenderState = bd->RenderState = &render_state;
+
+    // Setup desired Vulkan state
+    ImGui_ImplVulkan_SetupRenderState(draw_data, pipeline, command_buffer, rb, fb_width, fb_height);
 
     // Will project scissor/clipping rectangles into framebuffer space
     ImVec2 clip_off = draw_data->DisplayPos;         // (0,0) unless using multi-viewports
@@ -606,7 +677,7 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
 
     // Render command lists
     // (Because we merged all buffers into a single one, we maintain our own offset into them)
-    VkDescriptorSet last_desc_set = VK_NULL_HANDLE;
+    VkDescriptorSet last_image_view = VK_NULL_HANDLE;
     int global_vtx_offset = 0;
     int global_idx_offset = 0;
     for (const ImDrawList* draw_list : draw_data->CmdLists)
@@ -617,12 +688,13 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
             if (pcmd->UserCallback != nullptr)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplVulkan_DrawCallback_ResetRenderState)
+                {
                     ImGui_ImplVulkan_SetupRenderState(draw_data, pipeline, command_buffer, rb, fb_width, fb_height);
+                    last_image_view = VK_NULL_HANDLE;
+                }
                 else
                     pcmd->UserCallback(draw_list, pcmd);
-                last_desc_set = VK_NULL_HANDLE;
             }
             else
             {
@@ -633,8 +705,8 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
                 // Clamp to viewport as vkCmdSetScissor() won't accept values that are off bounds
                 if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
                 if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
-                if (clip_max.x > fb_width) { clip_max.x = (float)fb_width; }
-                if (clip_max.y > fb_height) { clip_max.y = (float)fb_height; }
+                if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
+                if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
                 if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
                     continue;
 
@@ -646,11 +718,11 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
                 scissor.extent.height = (uint32_t)(clip_max.y - clip_min.y);
                 vkCmdSetScissor(command_buffer, 0, 1, &scissor);
 
-                // Bind DescriptorSet with font or user texture
-                VkDescriptorSet desc_set = (VkDescriptorSet)pcmd->GetTexID();
-                if (desc_set != last_desc_set)
-                    vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->PipelineLayout, 0, 1, &desc_set, 0, nullptr);
-                last_desc_set = desc_set;
+                // Bind DescriptorSets for image view (font or user texture) and samplers
+                VkDescriptorSet image_view = (VkDescriptorSet)pcmd->GetTexID();
+                if (image_view != last_image_view)
+                    vkCmdBindDescriptorSets(command_buffer, VK_PIPELINE_BIND_POINT_GRAPHICS, bd->PipelineLayout, 0, 1, &image_view, 0, nullptr);
+                last_image_view = image_view;
 
                 // Draw
                 vkCmdDrawIndexed(command_buffer, pcmd->ElemCount, 1, pcmd->IdxOffset + global_idx_offset, pcmd->VtxOffset + global_vtx_offset, 0);
@@ -659,7 +731,7 @@ void ImGui_ImplVulkan_RenderDrawData(ImDrawData* draw_data, VkCommandBuffer comm
         global_idx_offset += draw_list->IdxBuffer.Size;
         global_vtx_offset += draw_list->VtxBuffer.Size;
     }
-    platform_io.Renderer_RenderState = nullptr;
+    platform_io.Renderer_RenderState = bd->RenderState = nullptr;
 
     // Note: at this point both vkCmdSetViewport() and vkCmdSetScissor() have been called.
     // Our last values will leak into user/application rendering IF:
@@ -753,7 +825,7 @@ void ImGui_ImplVulkan_UpdateTexture(ImTextureData* tex)
         }
 
         // Create the Descriptor Set
-        backend_tex->DescriptorSet = ImGui_ImplVulkan_AddTexture(bd->TexSamplerLinear, backend_tex->ImageView, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
+        backend_tex->DescriptorSet = ImGui_ImplVulkan_AddTexture(backend_tex->ImageView, VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
 
         // Store identifiers
         tex->SetTexID((ImTextureID)backend_tex->DescriptorSet);
@@ -1048,15 +1120,82 @@ static VkPipeline ImGui_ImplVulkan_CreatePipeline(VkDevice device, const VkAlloc
     return pipeline;
 }
 
+static void ImGui_ImplVulkan_CreateDescriptorSetLayout(VkDescriptorSetLayout* p_layout, VkDescriptorType descriptor_type)
+{
+    ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
+    ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
+
+    VkDescriptorSetLayoutBinding binding[1] = {};
+    binding[0].descriptorType = descriptor_type;
+    binding[0].descriptorCount = 1;
+    binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
+    VkDescriptorSetLayoutCreateInfo info = {};
+    info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
+    info.bindingCount = 1;
+    info.pBindings = binding;
+    VkResult err = vkCreateDescriptorSetLayout(v->Device, &info, v->Allocator, p_layout);
+    check_vk_result(err);
+}
+
+static VkDescriptorSet ImGui_ImplVulkan_CreateSamplerDS(VkSampler sampler)
+{
+    ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
+    ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
+
+    VkDescriptorSet descriptor_set;
+    VkDescriptorSetAllocateInfo alloc_info = {};
+    alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
+    alloc_info.descriptorPool = bd->DescriptorPool ? bd->DescriptorPool : v->DescriptorPool;
+    alloc_info.descriptorSetCount = 1;
+    alloc_info.pSetLayouts = &bd->DescriptorSetLayoutSampler;
+    VkResult err = vkAllocateDescriptorSets(v->Device, &alloc_info, &descriptor_set);
+    check_vk_result(err);
+
+    VkDescriptorImageInfo desc_image = {};
+    desc_image.sampler = sampler;
+    VkWriteDescriptorSet sampler_write_desc = {};
+    sampler_write_desc.sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
+    sampler_write_desc.dstSet = descriptor_set;
+    sampler_write_desc.descriptorCount = 1;
+    sampler_write_desc.dstBinding = 0;
+    sampler_write_desc.descriptorType = VK_DESCRIPTOR_TYPE_SAMPLER;
+    sampler_write_desc.pImageInfo = &desc_image;
+    vkUpdateDescriptorSets(v->Device, 1, &sampler_write_desc, 0, nullptr);
+    return descriptor_set;
+}
+
 bool ImGui_ImplVulkan_CreateDeviceObjects()
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
     ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
     VkResult err;
 
-    if (!bd->TexSamplerLinear)
+    if (!bd->DescriptorSetLayoutTexture)
+        ImGui_ImplVulkan_CreateDescriptorSetLayout(&bd->DescriptorSetLayoutTexture, VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE);
+    if (!bd->DescriptorSetLayoutSampler)
+        ImGui_ImplVulkan_CreateDescriptorSetLayout(&bd->DescriptorSetLayoutSampler, VK_DESCRIPTOR_TYPE_SAMPLER);
+
+    if (v->DescriptorPoolSize != 0)
+    {
+        IM_ASSERT(v->DescriptorPoolSize >= IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE);
+        VkDescriptorPoolSize pool_sizes[] =
+        {
+            { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, v->DescriptorPoolSize },
+            { VK_DESCRIPTOR_TYPE_SAMPLER, IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE },
+        };
+        VkDescriptorPoolCreateInfo pool_info = {};
+        pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+        pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+        pool_info.maxSets = v->DescriptorPoolSize + IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE;
+        pool_info.poolSizeCount = (uint32_t)IM_COUNTOF(pool_sizes);
+        pool_info.pPoolSizes = pool_sizes;
+        err = vkCreateDescriptorPool(v->Device, &pool_info, v->Allocator, &bd->DescriptorPool);
+        check_vk_result(err);
+    }
+
+    // Create samplers (bilinear sampling is required)
+    if (!bd->SamplerLinear || !bd->SamplerNearest)
     {
-        // Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling.
         VkSamplerCreateInfo info = {};
         info.sType = VK_STRUCTURE_TYPE_SAMPLER_CREATE_INFO;
         info.magFilter = VK_FILTER_LINEAR;
@@ -1068,37 +1207,16 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
         info.minLod = -1000;
         info.maxLod = 1000;
         info.maxAnisotropy = 1.0f;
-        err = vkCreateSampler(v->Device, &info, v->Allocator, &bd->TexSamplerLinear);
+        err = vkCreateSampler(v->Device, &info, v->Allocator, &bd->SamplerLinear);
         check_vk_result(err);
-    }
+        bd->SamplerLinearDS = ImGui_ImplVulkan_CreateSamplerDS(bd->SamplerLinear);
 
-    if (!bd->DescriptorSetLayout)
-    {
-        VkDescriptorSetLayoutBinding binding[1] = {};
-        binding[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
-        binding[0].descriptorCount = 1;
-        binding[0].stageFlags = VK_SHADER_STAGE_FRAGMENT_BIT;
-        VkDescriptorSetLayoutCreateInfo info = {};
-        info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_LAYOUT_CREATE_INFO;
-        info.bindingCount = 1;
-        info.pBindings = binding;
-        err = vkCreateDescriptorSetLayout(v->Device, &info, v->Allocator, &bd->DescriptorSetLayout);
-        check_vk_result(err);
-    }
-
-    if (v->DescriptorPoolSize != 0)
-    {
-        IM_ASSERT(v->DescriptorPoolSize >= IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE);
-        VkDescriptorPoolSize pool_size = { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, v->DescriptorPoolSize };
-        VkDescriptorPoolCreateInfo pool_info = {};
-        pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
-        pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
-        pool_info.maxSets = v->DescriptorPoolSize;
-        pool_info.poolSizeCount = 1;
-        pool_info.pPoolSizes = &pool_size;
-
-        err = vkCreateDescriptorPool(v->Device, &pool_info, v->Allocator, &bd->DescriptorPool);
+        info.magFilter = VK_FILTER_NEAREST;
+        info.minFilter = VK_FILTER_NEAREST;
+        info.mipmapMode = VK_SAMPLER_MIPMAP_MODE_NEAREST;
+        err = vkCreateSampler(v->Device, &info, v->Allocator, &bd->SamplerNearest);
         check_vk_result(err);
+        bd->SamplerNearestDS = ImGui_ImplVulkan_CreateSamplerDS(bd->SamplerNearest);
     }
 
     if (!bd->PipelineLayout)
@@ -1108,10 +1226,10 @@ bool ImGui_ImplVulkan_CreateDeviceObjects()
         push_constants[0].stageFlags = VK_SHADER_STAGE_VERTEX_BIT;
         push_constants[0].offset = sizeof(float) * 0;
         push_constants[0].size = sizeof(float) * 4;
-        VkDescriptorSetLayout set_layout[1] = { bd->DescriptorSetLayout };
+        VkDescriptorSetLayout set_layout[2] = { bd->DescriptorSetLayoutTexture, bd->DescriptorSetLayoutSampler };
         VkPipelineLayoutCreateInfo layout_info = {};
         layout_info.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
-        layout_info.setLayoutCount = 1;
+        layout_info.setLayoutCount = 2;
         layout_info.pSetLayouts = set_layout;
         layout_info.pushConstantRangeCount = 1;
         layout_info.pPushConstantRanges = push_constants;
@@ -1191,10 +1309,12 @@ void    ImGui_ImplVulkan_DestroyDeviceObjects()
 
     if (bd->TexCommandBuffer)     { vkFreeCommandBuffers(v->Device, bd->TexCommandPool, 1, &bd->TexCommandBuffer); bd->TexCommandBuffer = VK_NULL_HANDLE; }
     if (bd->TexCommandPool)       { vkDestroyCommandPool(v->Device, bd->TexCommandPool, v->Allocator); bd->TexCommandPool = VK_NULL_HANDLE; }
-    if (bd->TexSamplerLinear)     { vkDestroySampler(v->Device, bd->TexSamplerLinear, v->Allocator); bd->TexSamplerLinear = VK_NULL_HANDLE; }
+    if (bd->SamplerLinear)        { vkDestroySampler(v->Device, bd->SamplerLinear, v->Allocator); bd->SamplerLinear = VK_NULL_HANDLE; }
+    if (bd->SamplerNearest)       { vkDestroySampler(v->Device, bd->SamplerNearest, v->Allocator); bd->SamplerNearest = VK_NULL_HANDLE; }
     if (bd->ShaderModuleVert)     { vkDestroyShaderModule(v->Device, bd->ShaderModuleVert, v->Allocator); bd->ShaderModuleVert = VK_NULL_HANDLE; }
     if (bd->ShaderModuleFrag)     { vkDestroyShaderModule(v->Device, bd->ShaderModuleFrag, v->Allocator); bd->ShaderModuleFrag = VK_NULL_HANDLE; }
-    if (bd->DescriptorSetLayout)  { vkDestroyDescriptorSetLayout(v->Device, bd->DescriptorSetLayout, v->Allocator); bd->DescriptorSetLayout = VK_NULL_HANDLE; }
+    if (bd->DescriptorSetLayoutTexture)  { vkDestroyDescriptorSetLayout(v->Device, bd->DescriptorSetLayoutTexture, v->Allocator); bd->DescriptorSetLayoutTexture = VK_NULL_HANDLE; }
+    if (bd->DescriptorSetLayoutSampler)  { vkDestroyDescriptorSetLayout(v->Device, bd->DescriptorSetLayoutSampler, v->Allocator); bd->DescriptorSetLayoutSampler = VK_NULL_HANDLE; }
     if (bd->PipelineLayout)       { vkDestroyPipelineLayout(v->Device, bd->PipelineLayout, v->Allocator); bd->PipelineLayout = VK_NULL_HANDLE; }
     if (bd->Pipeline)             { vkDestroyPipeline(v->Device, bd->Pipeline, v->Allocator); bd->Pipeline = VK_NULL_HANDLE; }
     if (bd->DescriptorPool)       { vkDestroyDescriptorPool(v->Device, bd->DescriptorPool, v->Allocator); bd->DescriptorPool = VK_NULL_HANDLE; }
@@ -1241,8 +1361,8 @@ bool    ImGui_ImplVulkan_LoadFunctions(uint32_t api_version, PFN_vkVoidFunction(
 
 #ifdef IMGUI_IMPL_VULKAN_USE_LOADER
 #define IMGUI_VULKAN_FUNC_LOAD(func) \
-    func = reinterpret_cast<decltype(func)>(loader_func(#func, user_data)); \
-    if (func == nullptr)   \
+    ImGuiImplVulkanFuncs.pfn_##func = reinterpret_cast<PFN_##func>(loader_func(#func, user_data)); \
+    if (ImGuiImplVulkanFuncs.pfn_##func == nullptr)   \
         return false;
     IMGUI_VULKAN_FUNC_MAP(IMGUI_VULKAN_FUNC_LOAD)
 #undef IMGUI_VULKAN_FUNC_LOAD
@@ -1290,6 +1410,11 @@ bool    ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info)
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
     io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
 
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplVulkan_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplVulkan_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplVulkan_DrawCallback_SetSamplerNearest;
+
     // Sanity checks
     IM_ASSERT(info->Instance != VK_NULL_HANDLE);
     IM_ASSERT(info->PhysicalDevice != VK_NULL_HANDLE);
@@ -1305,6 +1430,9 @@ bool    ImGui_ImplVulkan_Init(ImGui_ImplVulkan_InitInfo* info)
         IM_ASSERT(info->PipelineInfoMain.RenderPass == VK_NULL_HANDLE);
 
     bd->VulkanInitInfo = *info;
+#ifdef IMGUI_IMPL_VULKAN_USE_LOADER
+    bd->Functions = ImGuiImplVulkanFuncs;
+#endif
 
     VkPhysicalDeviceProperties properties;
     vkGetPhysicalDeviceProperties(info->PhysicalDevice, &properties);
@@ -1355,7 +1483,7 @@ void ImGui_ImplVulkan_SetMinImageCount(uint32_t min_image_count)
 
 // Register a texture by creating a descriptor
 // FIXME: This is experimental in the sense that we are unsure how to best design/tackle this problem, please post to https://github.com/ocornut/imgui/pull/914 if you have suggestions.
-VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout)
+VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkImageView image_view, VkImageLayout image_layout)
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();
     ImGui_ImplVulkan_InitInfo* v = &bd->VulkanInitInfo;
@@ -1368,7 +1496,7 @@ VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image
         alloc_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
         alloc_info.descriptorPool = pool;
         alloc_info.descriptorSetCount = 1;
-        alloc_info.pSetLayouts = &bd->DescriptorSetLayout;
+        alloc_info.pSetLayouts = &bd->DescriptorSetLayoutTexture;
         VkResult err = vkAllocateDescriptorSets(v->Device, &alloc_info, &descriptor_set);
         check_vk_result(err);
     }
@@ -1377,20 +1505,27 @@ VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image
     if (descriptor_set != VK_NULL_HANDLE)
     {
         VkDescriptorImageInfo desc_image[1] = {};
-        desc_image[0].sampler = sampler;
         desc_image[0].imageView = image_view;
         desc_image[0].imageLayout = image_layout;
         VkWriteDescriptorSet write_desc[1] = {};
         write_desc[0].sType = VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET;
         write_desc[0].dstSet = descriptor_set;
         write_desc[0].descriptorCount = 1;
-        write_desc[0].descriptorType = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
+        write_desc[0].descriptorType = VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE;
         write_desc[0].pImageInfo = desc_image;
         vkUpdateDescriptorSets(v->Device, 1, write_desc, 0, nullptr);
     }
     return descriptor_set;
 }
 
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+VkDescriptorSet ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout)
+{
+    IM_UNUSED(sampler);
+    return ImGui_ImplVulkan_AddTexture(image_view, image_layout);
+}
+#endif
+
 void ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set)
 {
     ImGui_ImplVulkan_Data* bd = ImGui_ImplVulkan_GetBackendData();

backends/imgui_impl_vulkan.h

@@ -2,10 +2,10 @@
 // This needs to be used along with a Platform Backend (e.g. GLFW, SDL, Win32, custom..)
 
 // Implemented features:
-//  [!] Renderer: User texture binding. Use 'VkDescriptorSet' as texture identifier. Call ImGui_ImplVulkan_AddTexture() to register one. Read the FAQ about ImTextureID/ImTextureRef + https://github.com/ocornut/imgui/pull/914 for discussions.
+//  [!] Renderer: User texture binding. Use a VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE 'VkDescriptorSet' as texture identifier. Call ImGui_ImplVulkan_AddTexture() to register one. Read the FAQ about ImTextureID/ImTextureRef + https://github.com/ocornut/imgui/pull/914 for discussions.
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
 //  [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplVulkan_GetRenderState().
 
 // The aim of imgui_impl_vulkan.h/.cpp is to be usable in your engine without any modification.
 // IF YOU FEEL YOU NEED TO MAKE ANY CHANGE TO THIS CODE, please share them and your feedback at https://github.com/ocornut/imgui/
@@ -78,7 +78,8 @@
 #endif
 
 // Backend uses a small number of descriptors per font atlas + as many as additional calls done to ImGui_ImplVulkan_AddTexture().
-#define IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE   (8)     // Minimum per atlas
+#define IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE   (8)     // Minimum per atlas
+#define IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE         (2)     // Minimum for linear + nearest
 
 // Specify settings to create pipeline and swapchain
 struct ImGui_ImplVulkan_PipelineInfo
@@ -109,7 +110,7 @@ struct ImGui_ImplVulkan_InitInfo
     uint32_t                        QueueFamily;
     VkQueue                         Queue;
     VkDescriptorPool                DescriptorPool;             // See requirements in note above; ignored if using DescriptorPoolSize > 0
-    uint32_t                        DescriptorPoolSize;         // Optional: set to create internal descriptor pool automatically instead of using DescriptorPool.
+    uint32_t                        DescriptorPoolSize;         // Optional: set to create internal ImageView descriptor pool automatically instead of using DescriptorPool.
     uint32_t                        MinImageCount;              // >= 2
     uint32_t                        ImageCount;                 // >= MinImageCount
     VkPipelineCache                 PipelineCache;              // Optional
@@ -152,18 +153,21 @@ IMGUI_IMPL_API void             ImGui_ImplVulkan_CreateMainPipeline(const ImGui_
 // (Advanced) Use e.g. if you need to precisely control the timing of texture updates (e.g. for staged rendering), by setting ImDrawData::Textures = nullptr to handle this manually.
 IMGUI_IMPL_API void             ImGui_ImplVulkan_UpdateTexture(ImTextureData* tex);
 
-// Register a texture (VkDescriptorSet == ImTextureID)
-// FIXME: This is experimental in the sense that we are unsure how to best design/tackle this problem
-// Please post to https://github.com/ocornut/imgui/pull/914 if you have suggestions.
-IMGUI_IMPL_API VkDescriptorSet  ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout);
+// Register a texture (VkDescriptorSet for a VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE == ImTextureID)
+IMGUI_IMPL_API VkDescriptorSet  ImGui_ImplVulkan_AddTexture(VkImageView image_view, VkImageLayout image_layout);
 IMGUI_IMPL_API void             ImGui_ImplVulkan_RemoveTexture(VkDescriptorSet descriptor_set);
 
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+IMGUI_IMPL_API VkDescriptorSet  ImGui_ImplVulkan_AddTexture(VkSampler sampler, VkImageView image_view, VkImageLayout image_layout); // Ignore VkSampler
+#endif
+
 // Optional: load Vulkan functions with a custom function loader
 // This is only useful with IMGUI_IMPL_VULKAN_NO_PROTOTYPES / VK_NO_PROTOTYPES
 IMGUI_IMPL_API bool             ImGui_ImplVulkan_LoadFunctions(uint32_t api_version, PFN_vkVoidFunction(*loader_func)(const char* function_name, void* user_data), void* user_data = nullptr);
 
 // [BETA] Selected render state data shared with callbacks.
 // This is temporarily stored in GetPlatformIO().Renderer_RenderState during the ImGui_ImplVulkan_RenderDrawData() call.
+//      ImGui_ImplVulkan_RenderState* render_state = (ImGui_ImplVulkan_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
 // (Please open an issue if you feel you need access to more data)
 struct ImGui_ImplVulkan_RenderState
 {
@@ -171,6 +175,7 @@ struct ImGui_ImplVulkan_RenderState
     VkPipeline          Pipeline;
     VkPipelineLayout    PipelineLayout;
 };
+IMGUI_IMPL_API ImGui_ImplVulkan_RenderState* ImGui_ImplVulkan_GetRenderState();
 
 //-------------------------------------------------------------------------
 // Internal / Miscellaneous Vulkan Helpers
@@ -254,7 +259,7 @@ struct ImGui_ImplVulkanH_Window
         memset((void*)this, 0, sizeof(*this));
 
         // Parameters to create SwapChain
-        PresentMode = (VkPresentModeKHR)~0;             // Ensure we get an error if user doesn't set this.
+        PresentMode = VK_PRESENT_MODE_MAX_ENUM_KHR;     // Ensure we get an error if user doesn't set this.
 
         // Parameters to create RenderPass
         AttachmentDesc.format = VK_FORMAT_UNDEFINED;    // Will automatically use wd->SurfaceFormat.format.

backends/imgui_impl_wgpu.cpp

@@ -5,8 +5,8 @@
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'WGPUTextureView' as ImTextureID. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
 //  [X] Renderer: Texture updates support for dynamic font system (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplWGPU_GetRenderState().
 
 // Read imgui_impl_wgpu.h about how to use the IMGUI_IMPL_WEBGPU_BACKEND_WGPU or IMGUI_IMPL_WEBGPU_BACKEND_DAWN flags.
 
@@ -20,6 +20,10 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-09-07: Round framebuffer dimensions to the nearest integer instead of truncating them. (#9538, 9515, #8628)
+//  2026-08-31: Update to compile with wgpu-native 29.0. (#9377, #9532, #9530)
+//  2026-08-18: Fixed passing non-integer sizes to `wgpuRenderPassEncoderSetViewport() when FramebufferScale is >1.0f. (#9515, #8628)
+//  2026-04-23: Added support for standard draw callbacks (in platform_io): DrawCallback_ResetRenderState, DrawCallback_SetSamplerLinear, DrawCallback_SetSamplerNearest. (#9378)
 //  2026-03-25: Added support for WGVK native backend via IMGUI_IMPL_WEBGPU_BACKEND_WGVK define, with SPIRV shaders if WGSL is not available. (#9316, #9246, #9257)
 //  2026-03-09: Removed support for Emscripten < 4.0.10. (#9281)
 //  2025-10-16: Update to compile with Dawn and Emscripten's 4.0.10+ '--use-port=emdawnwebgpu' ports. (#8381, #8898)
@@ -64,12 +68,6 @@
 #error Emscripten <4.0.10 with '-sUSE_WEBGPU=1' is not supported anymore.
 #endif
 
-#if defined IMGUI_IMPL_WEBGPU_BACKEND_DAWN || defined IMGUI_IMPL_WEBGPU_BACKEND_WGVK
-// Dawn renamed WGPUProgrammableStageDescriptor to WGPUComputeState (see: https://github.com/webgpu-native/webgpu-headers/pull/413)
-// Using type alias until WGPU adopts the same naming convention (#8369)
-using WGPUProgrammableStageDescriptor = WGPUComputeState;
-#endif
-
 // Dear ImGui prototypes from imgui_internal.h
 extern ImGuiID ImHashData(const void* data_p, size_t data_size, ImU32 seed);
 #define MEMALIGN(_SIZE,_ALIGN)        (((_SIZE) + ((_ALIGN) - 1)) & ~((_ALIGN) - 1))    // Memory align (copied from IM_ALIGN() macro).
@@ -83,11 +81,13 @@ struct ImGui_ImplWGPU_Texture
 
 struct RenderResources
 {
-    WGPUSampler         Sampler = nullptr;              // Sampler for textures
-    WGPUBuffer          Uniforms = nullptr;             // Shader uniforms
-    WGPUBindGroup       CommonBindGroup = nullptr;      // Resources bind-group to bind the common resources to pipeline
-    ImGuiStorage        ImageBindGroups;                // Resources bind-group to bind the font/image resources to pipeline (this is a key->value map)
-    WGPUBindGroupLayout ImageBindGroupLayout = nullptr; // Cache layout used for the image bind group. Avoids allocating unnecessary JS objects when working with WebASM
+    WGPUSampler         SamplerLinear = nullptr;            // Bilinear sampler
+    WGPUSampler         SamplerNearest = nullptr;           // Nearest/point sampler
+    WGPUBuffer          Uniforms = nullptr;                 // Shader uniforms
+    WGPUBindGroup       CommonBindGroupLinear = nullptr;    // Common bind-group bound to group 0 (uniforms + SamplerLinear)
+    WGPUBindGroup       CommonBindGroupNearest = nullptr;   // Common bind-group bound to group 0 (uniforms + SamplerNearest)
+    ImGuiStorage        ImageBindGroups;                    // Resources bind-group to bind the font/image resources to pipeline (this is a key->value map)
+    WGPUBindGroupLayout ImageBindGroupLayout = nullptr;     // Cache layout used for the image bind group. Avoids allocating unnecessary JS objects when working with WebASM
 };
 
 struct FrameResources
@@ -114,6 +114,7 @@ struct ImGui_ImplWGPU_Data
     WGPUTextureFormat       renderTargetFormat = WGPUTextureFormat_Undefined;
     WGPUTextureFormat       depthStencilFormat = WGPUTextureFormat_Undefined;
     WGPURenderPipeline      pipelineState = nullptr;
+    ImGui_ImplWGPU_RenderState* RenderState = nullptr;  // == ImGui::GetPlatformIO().Renderer_RenderState during rendering.
 
     RenderResources         renderResources;
     FrameResources*         pFrameResources = nullptr;
@@ -128,6 +129,11 @@ static ImGui_ImplWGPU_Data* ImGui_ImplWGPU_GetBackendData()
     return ImGui::GetCurrentContext() ? (ImGui_ImplWGPU_Data*)ImGui::GetIO().BackendRendererUserData : nullptr;
 }
 
+ImGui_ImplWGPU_RenderState* ImGui_ImplWGPU_GetRenderState()
+{
+    return (ImGui_ImplWGPU_RenderState*)ImGui::GetPlatformIO().Renderer_RenderState;
+}
+
 //-----------------------------------------------------------------------------
 // SHADERS
 //-----------------------------------------------------------------------------
@@ -296,9 +302,11 @@ static void SafeRelease(WGPUShaderModule& res)
 }
 static void SafeRelease(RenderResources& res)
 {
-    SafeRelease(res.Sampler);
+    SafeRelease(res.SamplerLinear);
+    SafeRelease(res.SamplerNearest);
     SafeRelease(res.Uniforms);
-    SafeRelease(res.CommonBindGroup);
+    SafeRelease(res.CommonBindGroupLinear);
+    SafeRelease(res.CommonBindGroupNearest);
     SafeRelease(res.ImageBindGroupLayout);
 };
 
@@ -310,9 +318,10 @@ static void SafeRelease(FrameResources& res)
     SafeRelease(res.VertexBufferHost);
 }
 
-static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModuleWGSL(const char* wgsl_source)
+static WGPUComputeState ImGui_ImplWGPU_CreateShaderModuleWGSL(const char* wgsl_source)
 {
     ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
+    IM_UNUSED(bd);
 
     WGPUShaderSourceWGSL wgsl_desc = {};
     wgsl_desc.chain.sType = WGPUSType_ShaderSourceWGSL;
@@ -321,14 +330,35 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModuleWGSL(con
     WGPUShaderModuleDescriptor desc = {};
     desc.nextInChain = (WGPUChainedStruct*)&wgsl_desc;
 
-    WGPUProgrammableStageDescriptor stage_desc = {};
-    stage_desc.module = wgpuDeviceCreateShaderModule(bd->wgpuDevice, &desc);
+    // Detect shader compilation errors by using an error scope.
+    // Flag to be passed into the validation callback `userdata1` pointer.
+    int validation_error = 0;
+    wgpuDevicePushErrorScope(bd->wgpuDevice, WGPUErrorFilter_Validation);
+    WGPUShaderModule module = wgpuDeviceCreateShaderModule(bd->wgpuDevice, &desc);
+    WGPUPopErrorScopeCallbackInfo pop_cb = {};
+    pop_cb.mode = WGPUCallbackMode_AllowSpontaneous;
+    pop_cb.callback = [](WGPUPopErrorScopeStatus, WGPUErrorType type, WGPUStringView, void* userdata1, void*)
+    {
+        if (type == WGPUErrorType_Validation)
+            *static_cast<int*>(userdata1) = 1;
+    };
+    pop_cb.userdata1 = &validation_error;
+    wgpuDevicePopErrorScope(bd->wgpuDevice, pop_cb);
 
-    stage_desc.entryPoint = { "main", WGPU_STRLEN };
+    WGPUComputeState stage_desc = {};
+    if (module && !validation_error)
+    {
+        stage_desc.module = module;
+        stage_desc.entryPoint = { "main", WGPU_STRLEN };
+    }
+    else if (module)
+    {
+        wgpuShaderModuleRelease(module);
+    }
     return stage_desc;
 }
 
-static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModuleSPIRV(const void* spirv_binary, size_t spirv_length)
+static WGPUComputeState ImGui_ImplWGPU_CreateShaderModuleSPIRV(const void* spirv_binary, size_t spirv_length)
 {
     ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData();
 
@@ -340,7 +370,7 @@ static WGPUProgrammableStageDescriptor ImGui_ImplWGPU_CreateShaderModuleSPIRV(co
     WGPUShaderModuleDescriptor desc = {};
     desc.nextInChain = (WGPUChainedStruct*)&spirv_desc;
 
-    WGPUProgrammableStageDescriptor stage_desc = {};
+    WGPUComputeState stage_desc = {};
     stage_desc.module = wgpuDeviceCreateShaderModule(bd->wgpuDevice, &desc);
 
     stage_desc.entryPoint = { "main", WGPU_STRLEN };
@@ -412,26 +442,32 @@ static void ImGui_ImplWGPU_SetupRenderState(ImDrawData* draw_data, WGPURenderPas
     }
 
     // Setup viewport
-    wgpuRenderPassEncoderSetViewport(ctx, 0, 0, draw_data->FramebufferScale.x * draw_data->DisplaySize.x, draw_data->FramebufferScale.y * draw_data->DisplaySize.y, 0, 1);
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
+    wgpuRenderPassEncoderSetViewport(ctx, 0, 0, (float)fb_width, (float)fb_height, 0, 1);
 
     // Bind shader and vertex buffers
     wgpuRenderPassEncoderSetVertexBuffer(ctx, 0, fr->VertexBuffer, 0, fr->VertexBufferSize * sizeof(ImDrawVert));
     wgpuRenderPassEncoderSetIndexBuffer(ctx, fr->IndexBuffer, sizeof(ImDrawIdx) == 2 ? WGPUIndexFormat_Uint16 : WGPUIndexFormat_Uint32, 0, fr->IndexBufferSize * sizeof(ImDrawIdx));
     wgpuRenderPassEncoderSetPipeline(ctx, bd->pipelineState);
-    wgpuRenderPassEncoderSetBindGroup(ctx, 0, bd->renderResources.CommonBindGroup, 0, nullptr);
+    wgpuRenderPassEncoderSetBindGroup(ctx, 0, bd->renderResources.CommonBindGroupLinear, 0, nullptr);
 
     // Setup blend factor
-    WGPUColor blend_color = { 0.f, 0.f, 0.f, 0.f };
+    WGPUColor blend_color = { 0.0f, 0.0f, 0.0f, 0.0f };
     wgpuRenderPassEncoderSetBlendConstant(ctx, &blend_color);
 }
 
+// Draw callbacks
+static void ImGui_ImplWGPU_DrawCallback_ResetRenderState(const ImDrawList*, const ImDrawCmd*)   {} // Intentionally empty. Used as an identifier for rendering loop to call its code. Simpler to implement this way.
+static void ImGui_ImplWGPU_DrawCallback_SetSamplerLinear(const ImDrawList*, const ImDrawCmd*)   { ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData(); wgpuRenderPassEncoderSetBindGroup(bd->RenderState->RenderPassEncoder, 0, bd->renderResources.CommonBindGroupLinear, 0, nullptr); }
+static void ImGui_ImplWGPU_DrawCallback_SetSamplerNearest(const ImDrawList*, const ImDrawCmd*)  { ImGui_ImplWGPU_Data* bd = ImGui_ImplWGPU_GetBackendData(); wgpuRenderPassEncoderSetBindGroup(bd->RenderState->RenderPassEncoder, 0, bd->renderResources.CommonBindGroupNearest, 0, nullptr); }
+
 // Render function
-// (this used to be set in io.RenderDrawListsFn and called by ImGui::Render(), but you can now call this directly from your main loop)
 void ImGui_ImplWGPU_RenderDrawData(ImDrawData* draw_data, WGPURenderPassEncoder pass_encoder)
 {
     // Avoid rendering when minimized
-    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    int fb_width = (int)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    int fb_height = (int)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     if (fb_width <= 0 || fb_height <= 0 || draw_data->CmdLists.Size == 0)
         return;
 
@@ -521,7 +557,7 @@ void ImGui_ImplWGPU_RenderDrawData(ImDrawData* draw_data, WGPURenderPassEncoder
     ImGui_ImplWGPU_RenderState render_state;
     render_state.Device = bd->wgpuDevice;
     render_state.RenderPassEncoder = pass_encoder;
-    platform_io.Renderer_RenderState = &render_state;
+    platform_io.Renderer_RenderState = bd->RenderState = &render_state;
 
     // Render command lists
     // (Because we merged all buffers into a single one, we maintain our own offset into them)
@@ -537,8 +573,7 @@ void ImGui_ImplWGPU_RenderDrawData(ImDrawData* draw_data, WGPURenderPassEncoder
             if (pcmd->UserCallback != nullptr)
             {
                 // User callback, registered via ImDrawList::AddCallback()
-                // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.)
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
+                if (pcmd->UserCallback == ImGui_ImplWGPU_DrawCallback_ResetRenderState)
                     ImGui_ImplWGPU_SetupRenderState(draw_data, pass_encoder, fr);
                 else
                     pcmd->UserCallback(draw_list, pcmd);
@@ -549,12 +584,11 @@ void ImGui_ImplWGPU_RenderDrawData(ImDrawData* draw_data, WGPURenderPassEncoder
                 ImTextureID tex_id = pcmd->GetTexID();
                 ImGuiID tex_id_hash = ImHashData(&tex_id, sizeof(tex_id), 0);
                 WGPUBindGroup bind_group = (WGPUBindGroup)bd->renderResources.ImageBindGroups.GetVoidPtr(tex_id_hash);
-                if (!bind_group)
-                {
-                    bind_group = ImGui_ImplWGPU_CreateImageBindGroup(bd->renderResources.ImageBindGroupLayout, (WGPUTextureView)tex_id);
-                    bd->renderResources.ImageBindGroups.SetVoidPtr(tex_id_hash, bind_group);
-                }
-                wgpuRenderPassEncoderSetBindGroup(pass_encoder, 1, (WGPUBindGroup)bind_group, 0, nullptr);
+                if (!bind_group && tex_id != 0)
+                    if ((bind_group = ImGui_ImplWGPU_CreateImageBindGroup(bd->renderResources.ImageBindGroupLayout, (WGPUTextureView)tex_id)) != 0)
+                        bd->renderResources.ImageBindGroups.SetVoidPtr(tex_id_hash, bind_group);
+                if (bind_group)
+                    wgpuRenderPassEncoderSetBindGroup(pass_encoder, 1, (WGPUBindGroup)bind_group, 0, nullptr);
 
                 // Project scissor/clipping rectangles into framebuffer space
                 ImVec2 clip_min((pcmd->ClipRect.x - clip_off.x) * clip_scale.x, (pcmd->ClipRect.y - clip_off.y) * clip_scale.y);
@@ -563,8 +597,8 @@ void ImGui_ImplWGPU_RenderDrawData(ImDrawData* draw_data, WGPURenderPassEncoder
                 // Clamp to viewport as wgpuRenderPassEncoderSetScissorRect() won't accept values that are off bounds
                 if (clip_min.x < 0.0f) { clip_min.x = 0.0f; }
                 if (clip_min.y < 0.0f) { clip_min.y = 0.0f; }
-                if (clip_max.x > fb_width) { clip_max.x = (float)fb_width; }
-                if (clip_max.y > fb_height) { clip_max.y = (float)fb_height; }
+                if (clip_max.x > (float)fb_width) { clip_max.x = (float)fb_width; }
+                if (clip_max.y > (float)fb_height) { clip_max.y = (float)fb_height; }
                 if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y)
                     continue;
 
@@ -586,7 +620,7 @@ void ImGui_ImplWGPU_RenderDrawData(ImDrawData* draw_data, WGPURenderPassEncoder
     }
     image_bind_groups.Data.resize(0);
 
-    platform_io.Renderer_RenderState = nullptr;
+    platform_io.Renderer_RenderState = bd->RenderState = nullptr;
 }
 
 static void ImGui_ImplWGPU_DestroyTexture(ImTextureData* tex)
@@ -739,7 +773,7 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
     graphics_pipeline_desc.layout = wgpuDeviceCreatePipelineLayout(bd->wgpuDevice, &layout_desc);
 
     // Create the vertex shader
-    WGPUProgrammableStageDescriptor vertex_shader_desc = ImGui_ImplWGPU_CreateShaderModuleWGSL(__shader_vert_wgsl);
+    WGPUComputeState vertex_shader_desc = ImGui_ImplWGPU_CreateShaderModuleWGSL(__shader_vert_wgsl);
     if (!vertex_shader_desc.module) vertex_shader_desc = ImGui_ImplWGPU_CreateShaderModuleSPIRV(__shader_vert_spirv, sizeof(__shader_vert_spirv));
     graphics_pipeline_desc.vertex.module = vertex_shader_desc.module;
     graphics_pipeline_desc.vertex.entryPoint = vertex_shader_desc.entryPoint;
@@ -747,15 +781,9 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
     // Vertex input configuration
     WGPUVertexAttribute attribute_desc[] =
     {
-#if defined IMGUI_IMPL_WEBGPU_BACKEND_DAWN || defined IMGUI_IMPL_WEBGPU_BACKEND_WGVK
         { nullptr, WGPUVertexFormat_Float32x2, (uint64_t)offsetof(ImDrawVert, pos), 0 },
         { nullptr, WGPUVertexFormat_Float32x2, (uint64_t)offsetof(ImDrawVert, uv),  1 },
         { nullptr, WGPUVertexFormat_Unorm8x4,  (uint64_t)offsetof(ImDrawVert, col), 2 },
-#else
-        { WGPUVertexFormat_Float32x2, (uint64_t)offsetof(ImDrawVert, pos), 0 },
-        { WGPUVertexFormat_Float32x2, (uint64_t)offsetof(ImDrawVert, uv),  1 },
-        { WGPUVertexFormat_Unorm8x4,  (uint64_t)offsetof(ImDrawVert, col), 2 },
-#endif
     };
 
     WGPUVertexBufferLayout buffer_layouts[1];
@@ -768,7 +796,7 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
     graphics_pipeline_desc.vertex.buffers = buffer_layouts;
 
     // Create the pixel shader
-    WGPUProgrammableStageDescriptor pixel_shader_desc = ImGui_ImplWGPU_CreateShaderModuleWGSL(__shader_frag_wgsl);
+    WGPUComputeState pixel_shader_desc = ImGui_ImplWGPU_CreateShaderModuleWGSL(__shader_frag_wgsl);
     if (!pixel_shader_desc.module)  pixel_shader_desc = ImGui_ImplWGPU_CreateShaderModuleSPIRV(__shader_frag_spirv, sizeof(__shader_frag_spirv));
 
     // Create the blending setup
@@ -814,29 +842,34 @@ bool ImGui_ImplWGPU_CreateDeviceObjects()
 
     ImGui_ImplWGPU_CreateUniformBuffer();
 
-    // Create sampler
-    // (Bilinear sampling is required by default. Set 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines' or 'style.AntiAliasedLinesUseTex = false' to allow point/nearest sampling)
+    // Create samplers (Linear/Nearest) (bilinear sampling is required)
     WGPUSamplerDescriptor sampler_desc = {};
-    sampler_desc.minFilter = WGPUFilterMode_Linear;
-    sampler_desc.magFilter = WGPUFilterMode_Linear;
-    sampler_desc.mipmapFilter = WGPUMipmapFilterMode_Linear;
     sampler_desc.addressModeU = WGPUAddressMode_ClampToEdge;
     sampler_desc.addressModeV = WGPUAddressMode_ClampToEdge;
     sampler_desc.addressModeW = WGPUAddressMode_ClampToEdge;
     sampler_desc.maxAnisotropy = 1;
-    bd->renderResources.Sampler = wgpuDeviceCreateSampler(bd->wgpuDevice, &sampler_desc);
+    sampler_desc.minFilter = WGPUFilterMode_Linear;
+    sampler_desc.magFilter = WGPUFilterMode_Linear;
+    sampler_desc.mipmapFilter = WGPUMipmapFilterMode_Linear;
+    bd->renderResources.SamplerLinear = wgpuDeviceCreateSampler(bd->wgpuDevice, &sampler_desc);
+    sampler_desc.minFilter = WGPUFilterMode_Nearest;
+    sampler_desc.magFilter = WGPUFilterMode_Nearest;
+    sampler_desc.mipmapFilter = WGPUMipmapFilterMode_Nearest;
+    bd->renderResources.SamplerNearest = wgpuDeviceCreateSampler(bd->wgpuDevice, &sampler_desc);
 
-    // Create resource bind group
+    // Create resource bind groups (one per sampler, otherwise identical)
     WGPUBindGroupEntry common_bg_entries[] =
     {
         { nullptr, 0, bd->renderResources.Uniforms, 0, MEMALIGN(sizeof(Uniforms), 16), 0, 0 },
-        { nullptr, 1, 0, 0, 0, bd->renderResources.Sampler, 0 },
+        { nullptr, 1, 0, 0, 0, bd->renderResources.SamplerLinear, 0 },
     };
     WGPUBindGroupDescriptor common_bg_descriptor = {};
     common_bg_descriptor.layout = bg_layouts[0];
     common_bg_descriptor.entryCount = sizeof(common_bg_entries) / sizeof(WGPUBindGroupEntry);
     common_bg_descriptor.entries = common_bg_entries;
-    bd->renderResources.CommonBindGroup = wgpuDeviceCreateBindGroup(bd->wgpuDevice, &common_bg_descriptor);
+    bd->renderResources.CommonBindGroupLinear = wgpuDeviceCreateBindGroup(bd->wgpuDevice, &common_bg_descriptor);
+    common_bg_entries[1].sampler = bd->renderResources.SamplerNearest;
+    bd->renderResources.CommonBindGroupNearest = wgpuDeviceCreateBindGroup(bd->wgpuDevice, &common_bg_descriptor);
     bd->renderResources.ImageBindGroupLayout = bg_layouts[1];
 
     SafeRelease(vertex_shader_desc.module);
@@ -888,6 +921,11 @@ bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info)
     io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset;  // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes.
     io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures;   // We can honor ImGuiPlatformIO::Textures[] requests during render.
 
+    ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO();
+    platform_io.DrawCallback_ResetRenderState = ImGui_ImplWGPU_DrawCallback_ResetRenderState;
+    platform_io.DrawCallback_SetSamplerLinear = ImGui_ImplWGPU_DrawCallback_SetSamplerLinear;
+    platform_io.DrawCallback_SetSamplerNearest = ImGui_ImplWGPU_DrawCallback_SetSamplerNearest;
+
     bd->initInfo = *init_info;
     bd->wgpuDevice = init_info->Device;
     bd->defaultQueue = wgpuDeviceGetQueue(bd->wgpuDevice);
@@ -896,11 +934,7 @@ bool ImGui_ImplWGPU_Init(ImGui_ImplWGPU_InitInfo* init_info)
     bd->numFramesInFlight = init_info->NumFramesInFlight;
     bd->frameIndex = UINT_MAX;
 
-    bd->renderResources.Sampler = nullptr;
-    bd->renderResources.Uniforms = nullptr;
-    bd->renderResources.CommonBindGroup = nullptr;
     bd->renderResources.ImageBindGroups.Data.reserve(100);
-    bd->renderResources.ImageBindGroupLayout = nullptr;
 
     // Create buffers with a default size (they will later be grown as needed)
     bd->pFrameResources = new FrameResources[bd->numFramesInFlight];
@@ -955,11 +989,7 @@ void ImGui_ImplWGPU_NewFrame()
 
 bool ImGui_ImplWGPU_IsSurfaceStatusError(WGPUSurfaceGetCurrentTextureStatus status)
 {
-#if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) || defined(IMGUI_IMPL_WEBGPU_BACKEND_WGVK)
     return (status == WGPUSurfaceGetCurrentTextureStatus_Error);
-#else
-    return (status == WGPUSurfaceGetCurrentTextureStatus_OutOfMemory || status == WGPUSurfaceGetCurrentTextureStatus_DeviceLost);
-#endif
 }
 
 bool ImGui_ImplWGPU_IsSurfaceStatusSubOptimal(WGPUSurfaceGetCurrentTextureStatus status)
@@ -972,7 +1002,6 @@ bool ImGui_ImplWGPU_IsSurfaceStatusSubOptimal(WGPUSurfaceGetCurrentTextureStatus
 }
 
 // Helpers to obtain a string
-#if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN) || defined(IMGUI_IMPL_WEBGPU_BACKEND_WGVK)
 const char* ImGui_ImplWGPU_GetErrorTypeName(WGPUErrorType type)
 {
     switch (type)
@@ -995,7 +1024,7 @@ const char* ImGui_ImplWGPU_GetDeviceLostReasonName(WGPUDeviceLostReason type)
     default: return "Unknown";
     }
 }
-#elif !defined(__EMSCRIPTEN__)
+#if defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU) && !defined(__EMSCRIPTEN__)
 const char* ImGui_ImplWGPU_GetLogLevelName(WGPULogLevel level)
 {
     switch (level)

backends/imgui_impl_wgpu.h

@@ -17,8 +17,8 @@
 // Implemented features:
 //  [X] Renderer: User texture binding. Use 'WGPUTextureView' as ImTextureID. Read the FAQ about ImTextureID/ImTextureRef!
 //  [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset).
-//  [X] Renderer: Expose selected render state for draw callbacks to use. Access in '(ImGui_ImplXXXX_RenderState*)GetPlatformIO().Renderer_RenderState'.
 //  [X] Renderer: Texture updates support for dynamic font system (ImGuiBackendFlags_RendererHasTextures).
+//  [X] Renderer: Expose selected render state for draw callbacks to use. Access with ImGui_ImplWGPU_GetRenderState().
 
 // You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this.
 // Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need.
@@ -81,6 +81,7 @@ struct ImGui_ImplWGPU_RenderState
     WGPUDevice                  Device;
     WGPURenderPassEncoder       RenderPassEncoder;
 };
+IMGUI_IMPL_API ImGui_ImplWGPU_RenderState* ImGui_ImplWGPU_GetRenderState();
 
 //-------------------------------------------------------------------------
 // Internal Helpers
@@ -95,10 +96,9 @@ bool        ImGui_ImplWGPU_IsSurfaceStatusSubOptimal(WGPUSurfaceGetCurrentTextur
 void        ImGui_ImplWGPU_DebugPrintAdapterInfo(const WGPUAdapter& adapter);
 const char* ImGui_ImplWGPU_GetBackendTypeName(WGPUBackendType type);
 const char* ImGui_ImplWGPU_GetAdapterTypeName(WGPUAdapterType type);
-#if defined(IMGUI_IMPL_WEBGPU_BACKEND_DAWN)
 const char* ImGui_ImplWGPU_GetDeviceLostReasonName(WGPUDeviceLostReason type);
 const char* ImGui_ImplWGPU_GetErrorTypeName(WGPUErrorType type);
-#elif defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
+#if defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU) && !defined(__EMSCRIPTEN__)
 const char* ImGui_ImplWGPU_GetLogLevelName(WGPULogLevel level);
 #endif
 

backends/imgui_impl_win32.cpp

@@ -21,6 +21,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2026-05-19: DPI: ImGui_ImplWin32_EnableDpiAwareness() helper uses SetProcessDpiAwarenessContext() instead of SetThreadDpiAwarenessContext(), fixes DPI scaling issues with e.g. OpenGL. (#9403)
 //  2026-01-28: Inputs: Minor optimization not submitting gamepad input if packet number has not changed (reworked from 2025-09-23 attempt). (#9202, #8556)
 //  2025-12-03: Inputs: handle WM_IME_CHAR/WM_IME_COMPOSITION messages to support Unicode inputs on MBCS (non-Unicode) Windows. (#9099, #3653, #5961)
 //  2025-10-19: Inputs: Revert previous change to allow for io.ClearInputKeys() on focus-out not losing gamepad state.
@@ -412,7 +413,7 @@ void    ImGui_ImplWin32_NewFrame()
     // Setup time step
     INT64 current_time = 0;
     ::QueryPerformanceCounter((LARGE_INTEGER*)&current_time);
-    io.DeltaTime = (float)(current_time - bd->Time) / bd->TicksPerSecond;
+    io.DeltaTime = (float)((double)(current_time - bd->Time) / (double)bd->TicksPerSecond);
     bd->Time = current_time;
 
     // Update OS mouse position
@@ -886,6 +887,7 @@ DECLARE_HANDLE(DPI_AWARENESS_CONTEXT);
 typedef HRESULT(WINAPI* PFN_SetProcessDpiAwareness)(PROCESS_DPI_AWARENESS);                     // Shcore.lib + dll, Windows 8.1+
 typedef HRESULT(WINAPI* PFN_GetDpiForMonitor)(HMONITOR, MONITOR_DPI_TYPE, UINT*, UINT*);        // Shcore.lib + dll, Windows 8.1+
 typedef DPI_AWARENESS_CONTEXT(WINAPI* PFN_SetThreadDpiAwarenessContext)(DPI_AWARENESS_CONTEXT); // User32.lib + dll, Windows 10 v1607+ (Creators Update)
+typedef BOOL(WINAPI* PFN_SetProcessDpiAwarenessContext)(DPI_AWARENESS_CONTEXT);                 // User32.lib + dll, Windows 10 v1703+ (Creators Update)
 
 // Helper function to enable DPI awareness without setting up a manifest
 void ImGui_ImplWin32_EnableDpiAwareness()
@@ -893,7 +895,12 @@ void ImGui_ImplWin32_EnableDpiAwareness()
     if (_IsWindows10OrGreater())
     {
         static HINSTANCE user32_dll = ::LoadLibraryA("user32.dll"); // Reference counted per-process
-        if (PFN_SetThreadDpiAwarenessContext SetThreadDpiAwarenessContextFn = (PFN_SetThreadDpiAwarenessContext)::GetProcAddress(user32_dll, "SetThreadDpiAwarenessContext"))
+        if (PFN_SetProcessDpiAwarenessContext SetProcessDpiAwarenessContextFn = (PFN_SetProcessDpiAwarenessContext)::GetProcAddress(user32_dll, "SetProcessDpiAwarenessContext")) // Windows 10 v1703+
+        {
+            SetProcessDpiAwarenessContextFn(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
+            return;
+        }
+        if (PFN_SetThreadDpiAwarenessContext SetThreadDpiAwarenessContextFn = (PFN_SetThreadDpiAwarenessContext)::GetProcAddress(user32_dll, "SetThreadDpiAwarenessContext")) // Windows 10 v1607+
         {
             SetThreadDpiAwarenessContextFn(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE_V2);
             return;
@@ -930,7 +937,7 @@ float ImGui_ImplWin32_GetDpiScaleForMonitor(void* monitor)
         {
             GetDpiForMonitorFn((HMONITOR)monitor, MDT_EFFECTIVE_DPI, &xdpi, &ydpi);
             IM_ASSERT(xdpi == ydpi); // Please contact me if you hit this assert!
-            return xdpi / 96.0f;
+            return (float)xdpi / 96.0f;
         }
     }
 #ifndef NOGDI
@@ -940,7 +947,7 @@ float ImGui_ImplWin32_GetDpiScaleForMonitor(void* monitor)
     IM_ASSERT(xdpi == ydpi); // Please contact me if you hit this assert!
     ::ReleaseDC(nullptr, dc);
 #endif
-    return xdpi / 96.0f;
+    return (float)xdpi / 96.0f;
 }
 
 float ImGui_ImplWin32_GetDpiScaleForHwnd(void* hwnd)

backends/vulkan/glsl_shader.frag

@@ -1,7 +1,8 @@
 #version 450 core
 layout(location = 0) out vec4 fColor;
 
-layout(set=0, binding=0) uniform sampler2D sTexture;
+layout(set=0, binding=0) uniform texture2D _Texture;
+layout(set=1, binding=0) uniform sampler _Sampler;
 
 layout(location = 0) in struct {
     vec4 Color;
@@ -10,5 +11,5 @@ layout(location = 0) in struct {
 
 void main()
 {
-    fColor = In.Color * texture(sTexture, In.UV.st);
+    fColor = In.Color * texture(sampler2D(_Texture, _Sampler), In.UV.st);
 }

docs/BACKENDS.md

@@ -72,13 +72,14 @@ For example, the [example_win32_directx11](https://github.com/ocornut/imgui/tree
 
 In the [backends/](https://github.com/ocornut/imgui/blob/master/backends) folder:
 
-List of Platforms Backends:
+List of Platform Backends:
 
     imgui_impl_android.cpp      ; Android native app API
     imgui_impl_glfw.cpp         ; GLFW (Windows, macOS, Linux, etc.) http://www.glfw.org/
     imgui_impl_osx.mm           ; macOS native API (not as feature complete as glfw/sdl backends)
     imgui_impl_sdl2.cpp         ; SDL2 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
     imgui_impl_sdl3.cpp         ; SDL3 (Windows, macOS, Linux, iOS, Android) https://www.libsdl.org
+    imgui_impl_qnx.cpp          ; QNX Screen
     imgui_impl_win32.cpp        ; Win32 native API (Windows)
     imgui_impl_glut.cpp         ; GLUT/FreeGLUT (this is prehistoric software and absolutely not recommended today!)
 
@@ -89,6 +90,7 @@ List of Renderer Backends:
     imgui_impl_dx11.cpp         ; DirectX11
     imgui_impl_dx12.cpp         ; DirectX12
     imgui_impl_metal.mm         ; Metal (ObjC or C++)
+    imgui_impl_metal4.mm        ; Metal 4 (ObjC or C++)
     imgui_impl_opengl2.cpp      ; OpenGL 2 (legacy fixed pipeline. Don't use with modern OpenGL code!)
     imgui_impl_opengl3.cpp      ; OpenGL 3/4, OpenGL ES 2/3, WebGL
     imgui_impl_sdlgpu3.cpp      ; SDL_GPU (portable 3D graphics API of SDL3)
@@ -116,7 +118,7 @@ If you are not sure which backend to use, the recommended platform/frameworks fo
 | GLFW | https://github.com/glfw/glfw | imgui_impl_glfw.cpp | |
 | Sokol | https://github.com/floooh/sokol | [util/sokol_imgui.h](https://github.com/floooh/sokol/blob/master/util/sokol_imgui.h) | Lower-level than GLFW/SDL |
 
-If your application runs on Windows or if you are using multi-viewport, the win32 backend handles some details a little better than other backends.
+If your application runs on Windows or if you are using multi-viewports, the imgui_impl_win32 backend handles some details better than other backends.
 
 ## Using third-party Backends
 
@@ -233,9 +235,7 @@ void MyImGuiBackend_RenderDrawData(ImDrawData* draw_data)
     // - Scissor enabled
     MyEngineSetupenderState();
 
-    // TODO: Setup texture sampling state
-    // - Sample with bilinear filtering (NOT point/nearest filtering).
-    // - Use 'io.Fonts->Flags |= ImFontAtlasFlags_NoBakedLines;' to allow point/nearest filtering.
+    // TODO: Setup texture sampler to bilinear (NOT point/nearest filtering).
 
     // TODO: Setup viewport covering draw_data->DisplayPos to draw_data->DisplayPos + draw_data->DisplaySize
 
@@ -255,8 +255,8 @@ void MyImGuiBackend_RenderDrawData(ImDrawData* draw_data)
             const ImDrawCmd* pcmd = &cmd_list->CmdBuffer[cmd_i];
             if (pcmd->UserCallback)
             {
-                if (pcmd->UserCallback == ImDrawCallback_ResetRenderState)
-                    MyEngineSetupenderState();
+                if (pcmd->UserCallback == platform_io.DrawCallback_ResetRenderState)
+                    MyEngineSetupSenderState();
                 else
                     pcmd->UserCallback(cmd_list, pcmd);
             }

docs/CHANGELOG.txt

@@ -35,6 +35,563 @@ HOW TO UPDATE?
   and API updates have been a little more frequent lately. They are documented below and in imgui.cpp and should not affect all users.
 - Please report any issue!
 
+-----------------------------------------------------------------------
+ VERSION 1.93.0 WIP (In Progress)
+-----------------------------------------------------------------------
+
+Breaking Changes:
+
+- Style: obsoleted `style.CurveTessellationTol (default 1.25)` which was in Pixels² unit in
+  favor of `style.CurveTessellationMaxError` (default 1.12)` which is in Pixels unit. It is
+  easier to tweak + this allows us to easily scale error threshold on high density screens.
+  - style.CurveTessellationMaxError == sqrf(style.CurveTessellationTol).
+- ImGuiTextFilter: removed `float width` parameter of `Draw(const char* filter, float width)`:
+  prefer using `SetNextItemWidth(float)` which is standard. Kept inline redirection function.
+- Backends:
+  - DirectX12: Removed support for legacy `ImGui_ImplDX12_Init()` signature, which was
+    obsoleted in 1.91.6 (December 2014), because it needed to forcefully disable support
+    for `ImGuiBackendFlags_RendererHasTextures`. Use the new signature! (#9487)
+
+Other Changes:
+
+- Drags, Sliders:
+  - Fixed an overflow using `ImGuiSliderFlags_Logarithmic` with S32/S64 types which
+    leads to clamped interactions. (#9526, #3361, #1823, #1316, #642) [@lailoken]
+  - Ongoing drags may be cancelled using Right-Click, Escape or Gamepad Triangle.
+    Cancelling reverts to the initial value. (#8564, #9534)
+- TreeNode:
+  - Fixed issues/asserts with 32+ deep trees when using ImGuiTreeNodeFlags_DrawLinesXXX
+    features or other features requiring stack storage. (#9509) [@lasrod]
+- TabBar:
+  - Improved scroll target when clicking a Tab that is larger than the scrolling
+    section width.
+  - Using <> scrolling buttons while the selected Tab is at either end of the
+    section mid-section but not fully visible always makes it fully visible
+    (before eventually selecting a Tab in the leading/trailing section)
+- Tables:
+  - Fixed a bug restoring correct .ini columns order when table use is Sortable
+    but had no user changes. (regression from 1.92.9). (#9519, #9108)
+- InpuText:
+  - Fixed a crash in some cases when using Home key in a WordWrap+ReadOnly field. (#9561)
+- Selectable:
+  - Fixed `ImGuiSelectableFlags_SelectOnNav` triggering during NavInit.
+- Fonts:
+  - Reworked `AddFontDefault()` to use `io.DisplayFrameBufferScale` as part of the heuristic
+    to select `AddFontDefaultVector()` by default, effectively using ProggyForever instead of
+    ProggyClean on most Apple/Retina setups by default.
+  - imgui_freetype: Fixed blurryness rendering `AddFontDefaultVector()`. Caused by a
+    non-pixel aligned offset caused by `ExtraSizeScale`. (#9348, #9233) [@redpartizan, @RDMCz]
+- ColorEdit:
+  - ColorButton, ColorEdit, ColorPicker: cancel-out alpha caused by BeginDisabled() so
+    disabled color buttons have the same color as non-disabled oness. (#9511)
+  - ColorButton: fixed issues/inconsistencies with checkerboard rendering when combining
+    color alpha and global style alpha. (#9511) [@enjmiah, @ocornut]
+- Popups:
+  - Amended context menu right-click opening code to check that the right-click
+    hasn't been owned by another items. This is more correct and also necessary
+    to avoid Drags/Sliders cancelling also triggering a cancel menu. (#8564, #9534)
+  - Reworked `GetMousePosOnOpeningCurrentPopup()` to be legal to call within the
+    BeginPopup/EndPopup scope of a popup which was just closed. (#9551) [@jkunstwald]
+- ImGuiTextFilter:
+  - Added support for space as an "and" filter, which is the standard. (#2435, #30)
+     e.g. w/ filter 'hello world' (without quotes) both words needs to be in input data.
+  - Added support for double-quoted "xxx" blocks to e.g. match words sequences. (#2435)
+     e.g. w/ filter "hello world" the exact sequence needs to be in input data.
+  - Fixed filtering when mixing "include" and "-exclude" keyword so that an "-exclude"
+    match always filters out. (#2435) [@kudaba, @ocornut]
+  - Added `DrawWithHint()` function. (#6206, #6395, #6447)
+  - Added a "incl -excl" hint by default when the search field is empty. (#6206, #6395, #6447)
+- Style:
+  - Inverted `ImGuiCol_TitleBgXXX` colors for `StyleColorsLight()` so that the selected
+    window title bar appears brighter.
+- Misc:
+  - Added `ImGuiItemFlags_MixedValue` flag for representing mixed/indeterminate values.
+    Supported by: Checkbox(), RadioButton(), DragXXX(), SliderXXX(), InputXXX(), ColorXXX()
+    and Combo() functions.
+    The scoped flag is designed for usage by advanced property editors. (#5518, #5677, #6865)
+  - Fixed `GetBackgroundDrawList()`/`GetForegroundDrawList()` not being properly reset
+    every frame when cumulated session time is very large (e.g. a few days). [@lailoken]
+  - Added `IM_NODEBUGSTEP` helper to tag functions with `__declspec(non_user_code)` (MSVC)
+    or `[[gnu::artificial]]` (Clang/GCC) in order to provide a hint to debuggers to skip
+    trivial functions when stepping into.
+  - Tagged various trivial functions using `IM_NODEBUGSTEP`: `ImVec2()`, `ImVec4()` etc.
+    and various operators.
+  - Fixed strict aliasing violation in `ImHashData()` affecting Clang 23 + SSE 4.2 + -flto.
+    Could manifest as `ImFontAtlasBakedGetId()` computation omitting font size from
+    the hashed data. (#9557, #9560) [@sthalik]
+  - IO: restore default clipboard/ime/shell platform handlers on ClearPlatformHandlers(), fixing
+    issues switching backends mid-session to one relying on default. (#9537, #8945, #2769) [@lstalmir]
+- DrawList:
+  - Per-viewport FramebufferScale for Apple/Retina screen is applied to draw lists:
+    - AA Fringe is scaled accordingly.
+    - Circle and Curves tessellation error are scaled accordingly.
+  - Reworked assert in PushTexture() to allow convenience grace period of using a
+    texture that was queue for destroy during the frame. Make it safe to stick to
+    an existing texture during the frame. (#9528, #8465)
+  - Added optional `platform_io.DrawCallback_SetSamplerFromTex` standard backend-agnostic
+    draw callback for requesting to use the sampler associated already associated to a texture.
+    Currently only supported by the OpenGL2/3 and SDLRenderer3 backend. (#9378)
+  - Fixed dangling ImDrawList::_OwnerName when using animated label. (#9552) [@ubi-dcastonguay]
+- Demo:
+  - Added `Widgets->Mixed Values` section. (#5518, #5677, #6865)
+  - Style Editor: fixed style/colors combo box applying style when opening Combo.
+- Backends:
+  - QNX: added QNX Screen backend. (#9492) [@mgorchak-blackberry]
+  - OpenGL2, OpenGL3: added support for `platform_io.DrawCallback_SetSamplerFromTex` draw
+    callback to request using the sampler associated already associated to a texture. (#9378)
+  - OpenGL2, OpenGL3: fixed `DrawCallback_ResetRenderState` handler not reseting all states
+    in the glTexParameter() path. (#9378)
+  - SDL2: fixed querying framebuffer scale/density when using Metal without
+    going through a SDL_Renderer. (#5592) [@lailoken]
+  - SDLRenderer3: restore any temporarily modified texture scale modes at the of `RenderDrawData()`. (#9378)
+  - SDLRenderer3: expose CurrentScaleMode in ImGui_ImplSDLRenderer3_RenderState. (#9543, #9378) [@Clownacy]
+  - SDLRenderer3: added support for `platform_io.DrawCallback_SetSamplerFromTex` draw callback to request
+    using the sampler associated already associated to a texture via `SDL_SetTextureScaleMode()`. (#9378)
+    It is equivalent to setting `render_state->CurrentScaleMode = SDL_SCALEMODE_INVALID`.
+    Note: this  callback is only supported by selected rendering backends: most other graphics API
+    don't have the equivalent of `SDL_SetTextureScaleMode()` and the callback won't work with them.
+  - Vulkan: added for support for multiple Vulkan contexts with custom loaders. (#6616) [@lstalmir]
+  - WebGPU: fixed passing non-integer sizes to `wgpuRenderPassEncoderSetViewport()`
+    when `FramebufferScale` is >1.0f. (#9515, #8628) [@WayU]
+  - WebGPU: update to build with wgpu-native 29.0+. (#9377, #9532, #9530) [@lucascompython, @ivan-enzhaev]
+- Examples:
+  - MSVC: disabled /JMC in Visual Studio projects (unnecessary overhead).
+  - GLFW/SDL2/SDL3+WebGPU: fixed running with wgpu-native missing `wgpuInstanceWaitAny()`. (#9377)
+  - SDL2+Metal: create Metal context without using a `SDL_Renderer`.
+  - QNX+OpenGL3, QNX+Vulkan: added QNX Screen examples. (#9492) [@mgorchak-blackberry]
+  - OSX+OpenGL3: added example_apple_opengl3/ (OSX/Cocoa + OpenGL 3.2 Core profile).
+
+
+-----------------------------------------------------------------------
+ VERSION 1.92.9b (Released 2026-07-31)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.92.9b
+
+Changes:
+
+- DragXXX, SliderXXX: fixed a regression in 1.92.9 where clicking a previously
+  Ctrl+Clicked field would flick it to text edit mode for a frame. (#9476, #701)
+- Tables:
+  - Fixed Y2 position of lower horizontal border (ImGuiTableFlags_BordersOuterH)
+    being off by one pixel when vertical ones are not also enabled. [@thedmd]
+  - Fixed X position of angled borders being off by half a pixel. [@thedmd]
+- ImDrawData: fixed a regression in 1.92.9 where legacy `ImDrawData::CmdListsCount` was always 0.
+  Prefer using `ImDrawData::CmdList.Size` anyway.
+
+
+-----------------------------------------------------------------------
+ VERSION 1.92.9 (Released 2026-07-25)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.92.9
+
+Breaking Changes:
+
+- DragXXX, SliderXXX, InputScalar: with `ImGuiItemFlags_LiveEditOnInputScalar` now
+  defaulting to being disabled: inputting a value with the keyboard doesn't write
+  intermediate values to the backing variable. (#9476)
+    Before: DragFloat() with user typing "123" --> write back 1, then 12, then 123.
+    After:  DragFloat() with user typing "123" --> write back 123 when validated/unfocused.
+  You can enable the flag back for a given scope if needed by specific widget/behavior.
+  Read below for details.
+- TreeNode: commented out legacy name `ImGuiTreeNodeFlags_SpanTextWidth` which
+  was obsoleted in 1.90.7 (May 2024). Use `ImGuiTreeNodeFlags_SpanLabelWidth`.
+- ColorEdit: obsoleted SetColorEditOptions() function added in 1.51 (June 2017) in favor
+  of directly poking to io.ConfigColorEditFlags. More consistent and easier to discover.
+- Drag and Drop: commented out legacy name `ImGuiDragDropFlags_SourceAutoExpirePayload`
+  which obsoleted in 1.90.9 (July 2024). Use `ImGuiDragDropFlags_PayloadAutoExpire`.
+- ImDrawData: marked `CmdListsCount` as obsolete (technically was obsoleted in 1.89.8).
+    Before: `draw_data->CmdListsCount`, After: `draw_data->CmdLists.Size`.
+
+Other Changes:
+
+- LiveEdit on/off: added `ImGuiItemFlags_LiveEditOnInputText` and `ImGuiItemFlags_LiveEditOnInputScalar`
+  flags to configure the timing of applying edits of backing variables when typing
+  values using a keyboard.
+  (#9476, #701, #3936, #3946, #5904, #6284, #8149, #8065, #8665, #9117, #9299, #700, #1351,
+   #1875, #2060, #2215, #2380, #2550, #3083, #3338, #3556, #4373, #4714, #4885, #5184,
+   #5777, #6707, #6766, #8004, #8303, #8915, #9308)
+  - ImGuiItemFlags_LiveEditOnInputText is enabled by default (same as before):
+    - The expectation is that for strings/text, enabling LiveEdit is a better default.
+  - ImGuiItemFlags_LiveEditOnInputScalar is disabled by default (new behavior):
+    - The expectation is that for numeric/scalars values, disabling LiveEdit is a better default.
+  - Until now:
+    - Edits where always applied immediately to backing variable, which is equivalent
+      to the `ImGuiItemFlags_LiveEditXXX` flags being enabled.
+    - Typing '123' in an integer field would output successively 1, 12 then 123.
+    - Most uses of `IsItemDeactivatedAfterEdit()` or `ImGuiInputTextFlags_EnterReturnsTrue`
+      were actually workarounds for this issue. Advanced applications would typically
+      use `IsItemDeactivatedAfterEdit()` to distinguish transactions.
+      Workarounds often required a backing store for scalar values, and there were
+      also a few niggles related to `IsItemDeactivatedAfterEdit()` when using +/-
+      buttons of an `InputInt()` widgets.
+    - Many of those situations can now be naturally simplified when disabling
+      `ImGuiItemFlags_LiveEditOnInputScalar` is disabled.
+  - The new flags allows disabling this behavior selectively for strings fields
+    such as `InputText()` vs scalar fields: `SliderInt()`, `InputFloat()`, etc.
+    - When LiveEdit is disabled, edits are applied when pressing enter, tabbing out,
+      clearing a field or deactivating due to a focus loss.
+    - The flag may be altered programmatically, e.g. for the entire frame scope:
+        NewFrame();
+        PushItemFlag(ImGuiItemFlags_LiveEditOnInputScalar, true); // Enable for scalars for the whole frame
+        ....
+        PopItemFlag();
+        EndFrame();
+      Or for a specific widget:
+        PushItemFlag(ImGuiItemFlags_LiveEditOnInput, true);       // Enable for one widget
+        SliderInt(...);
+        PopItemFlag();
+  - We intentionally are not adding `io.ConfigLiveEditXXX` fields to dictate the
+    default value of each `ImGuiItemFlags_LiveEditXXX`, because this is not expected
+    to be a user preference but a programmer/widget preferences.
+    And we strive to make the toolkit consistent.
+- Windows:
+  - Clicking on a window's empty-space to move/focus a window checks
+    for lack of mouse button ownership. This gives an additional opportunity
+    for user code to bypass it without using a clickable item. (#9382)
+  - Clicking on a window's empty-space to move/focus a window checks
+    for lack of queued focus request. (#9382)
+  - Fixed double-click collapse toggle not owning the mouse button. If a
+    `SetNextWindowPos()` with pivot was queued in the same frame, the second
+    click could trigger another item in the same window. (#9439) [@Cleroth]
+- Popups:
+  - Added bool return value to `OpenPopup()`, `OpenPopupOnItemClick()` functions
+    to notify when the popup was just opened. (#9429)
+- InputText:
+  - Added `style.InputTextCursorSize` to configure cursor/caret thickness. (#7031, #9409)
+    It is automatically scaled by `style.ScaleAllSizes()`.
+  - Reworked `io.ConfigInputTextEnterKeepActive` mode so that pressing
+    Ctrl+Enter or Shift+Enter still allows to deactivate. (#9239)
+- Tables:
+  - Redesigned/rewrote code to reconcile columns and settings on topology changes. (#9108)
+    - When a column label is passed to TableSetupColumn(), the underlying identifier
+      is used to match live columns data and .ini settings data when changing.
+      This makes it possible to add/remove columns from a table without losing
+      neither live data neither .ini settings data.
+    - PS: Note that this is distinct from toggling column visibility or reordering
+      columns, which was always possible. The new matching makes it easier to create
+      tables that are entirely customized by user or code, without losing state.
+    - Columns without identifiers or with duplicate identifiers are matched
+      sequentially, matching old behavior.
+    - Column ID are stored in .ini file.
+    - Code is being tested both for live topology changes and for loading .ini
+      data with mismatched topology.
+  - Context Menu: added a "Reset" sub-menu with a "Reset Visibility" option.
+    (which is greyed out when using default settings)
+  - Headers: fixed label being clipped early to reserve space for a sort marker
+    even when no sort marker is displayed. Auto-fitting a column still accounts
+    for the possible marker, so that sorting after an auto-fit doesn't clip the label.
+- Multi-Select:
+  - Reworked `ImGuiMultiSelectFlags_NoAutoSelect` as it carried side-effects that
+    were hardcoded/designed to use multi-selection on checkboxes. (#9391)
+    Specifically removed those undocumented behaviors from `_NoAutoSelect`:
+    - Clicking a selected/checked item always unselect/uncheck.
+    - Shift+Click inverts targets value and copy to range.
+    - Shift+Keyboard copy selection source value to range.
+    Those behaviors are still happening on checkboxes used within multi-selection.
+- Fonts:
+  - Added `IMGUI_DISABLE_DEFAULT_FONT_BITMAP`/`IMGUI_DISABLE_DEFAULT_FONT_VECTOR` to
+    disable embedding either fonts separately. (#9407)
+  - Tweak `CalcTextSize()` awkward width rounding/ceiling code to reduce floating-point
+    precision issues altering the result by 1 even at relatively small width. (#791)
+  - Better document the fact that `ImFontAtlas::Clear()`/`ClearFonts()` functions are
+    unlikely to be useful nowadays. Better recover to an edge case of mistakenly
+    calling `ClearFonts()` during rendering.
+  - Fixed an issue where passing a manually created ImFontAtlas to CreateContext() would
+    incorrectly destroy it in `DestroyContext()` when ref-count gets back to zero. (#9426)
+  - Destroying an ImGui context using a `ImFontAtlas` checks that the later has no references.
+- Nav:
+  - Fixed context menu activation with gamepad erroneously testing for _NavEnableKeyboard
+    instead of _NavEnableGamepad. (#9454, #8803, #9270) [@Clownacy]
+- TreeNode:
+  - Fixed nav cursor rendering with rounding even though tree nodes don't have it. (#7589)
+- Inputs:
+  - Added `GetItemClickedCountWithSingleClickDelay()` helper for easy disambiguation
+    between single-click and double-click for actions that needs single-click to do
+    something other than selection. (#8337)
+    - Returns 1 on single-click but delayed by io.MouseSingleClickDelay.
+    - Returns 2 on double-click, and 2+ on subsequent repeated clicks.
+  - Added `io.MouseSingleClickDelay` to configure default delayed single click delay when
+    using `GetItemClickedCountWithSingleClickDelay()` or `IsMouseReleasedWithDelay()`. (#8337)
+    Note that `io.MouseSingleClickDelay` is always `> io.MouseDoubleClickTime`.
+- ColorEdit:
+  - Added `io.ConfigColorEditFlags` to read/modify current color edit/picker settings.
+  - ColorPicker: added `ImGuiColorEditFlags_PickerNoRotate` to disable rotation of the
+    S/V triangle when in `ImGuiColorEditFlags_PickerHueWheel` mode. (#9337) [@SeanTheBuilder1]
+    Likely best passed to `style.ColorEditFlags` to setup globally and once.
+  - ColorButton: small rendering tweak/optimization for the alpha checkerboard.
+- Style:
+  - Added style.MenuItemRounding, ImGuiStyleVar_MenuItemRounding. (#7589, #9375, #9453)
+  - Added style.SelectableRounding, ImGuiStyleVar_SelectableRounding. (#7589, #9375, #9453)
+    The use of this is discouraged because it can easily create problems rendering e.g.
+    contiguous selection.
+  - Scale the NavCursor border thickness when using large values with `ScallAllSizes()`.
+- Settings:
+  - Windows/Tables settings entries can now record the last used date in YYYYMMDD format,
+    allowing tools to run to e.g. delete entries that haven't been used in X months. (#9460)
+  - Added `bool io.ConfigIniSettingsSaveLastUsedDate` to disable saving that info. (#9460)
+  - Added `int io.ConfigIniSettingsAutoDiscardMonths` to enable a mode where unused settings
+    are automatically discard after xx months. (#9460)
+  - Added a trimming tool under Metrics->Settings, along with a yet-unexposed function.
+  - The current system date is fed through `ImGuiPlatformIO::Platform_SessionDate`,
+    which is automatically set by a call to time() done during context creation. (#9460)
+  - Added `IMGUI_DISABLE_TIME_FUNCTIONS` to disable setting platform_io.Platform_SessionDate.
+    A custom backend may still set it manually. (#9460)
+- DrawList:
+  - Minor optimization to `AddLine()`, `AddLineH()`, `AddLineV()` functions. (#4091)
+  - Added `ImDrawListFlags_TextNoPixelSnap` to disable snapping of AddText()
+    coordinates for a given scope. (#3437, #9417, #2291)
+- Demo:
+  - Extract 'Widgets->Tree Nodes->Selectable Nodes' out of the 'Advanced'
+    demo for clarity (manual reimplementation of basic selection).
+- Debug Tools:
+  - Added `IM_DEBUG_BREAK()` handler for GCC+AArch64/ARM64. [@tom-seddon]
+- Backends:
+  - Android:
+    - Clear mouse position on touch release (`AMOTION_EVENT_ACTION_UP`) to prevent
+      items from staying in hovered state. (#6627, #9474) [@Turtle-PB]
+  - Metal4:
+    - Added new Metal 4 backend (forked from Metal 3 backend). (#9458, #9451) [@AmelieHeinrich]
+    - Added Metal-cpp support enabled with `IMGUI_IMPL_METAL_CPP` define. (#9461) [@MERL10N]
+  - OpenGL2:
+    - Backup and restore `GL_UNPACK_ROW_LENGTH` and `GL_UNPACK_ALIGNMENT` when updating texture
+      to avoid altering caller GL state. (#8802, #9473) [@Turtle-PB]
+  - OpenGL3:
+    - GLSL version detection assume GLSL 410 when GL context is 4.1.
+      Fixes an issue running on macOS with Wine. [#9427, #6577) [@perminovVS]
+    - Expose selected render state in `ImGui_ImplOpenGL3_RenderState`, allowing to
+      dynamically select between use of `glBindSampler()` and `glTexParameter()`. (#9378)
+    - Backup and restore `GL_UNPACK_ROW_LENGTH` and `GL_UNPACK_ALIGNMENT` when updating texture
+      to avoid altering caller GL state. (#8802, #9473) [@Turtle-PB]
+  - SDL2:
+    - Restore SDL_StartTextInput()/SDL_StopTextInput() in IME handler for on-screen keyboard
+      support on Android. (#7636, #9474) [@Turtle-PB]
+  - SDLRenderer3:
+    - Fixed sampler change which didn't work on all graphics backends. (#7616, #9470, #9378)
+    - Fixed default sampler not being Linear. Regression in 1.92.8. (#7616, #9470, #9378) [@ShiroKSH]
+  - Win32:
+    - Uses `SetProcessDpiAwarenessContext()` instead of `SetThreadDpiAwarenessContext()`
+      when available, fixing OpenGL DPI scaling issues as e.g. NVIDIA drivers tends
+      to spawn multiple-thread to manage OpenGL. (#9403)
+- Examples:
+  - Android: update to AGP 9.2.0 to support Gradle 9.6.0.
+  - Apple+Metal4: added new example. (#9465, #9451) [@hoffstadt]
+  - OpenGL3+GLFW/SDL2/SDL3: allow Wine compatibility by passing empty GLSL version
+    string to ImGui_ImplOpenGL3_Init() to let backend decide of a GLSL version based
+    on actual GL version obtained. (#9427, #6577) [@perminovVS]
+  - OpenGL3+Win32: rework context creation to allow Wine compatibility. (#9427, #6577) [@perminovVS]
+  - SDL2/SDL3: use `SDL_GetWindowSizeInPixels()` to create frame-buffers. Fixes issues
+    with non-fractional framebuffer size on Wayland. (#8761, #9124) [@billtran1632001]
+  - SDL3+Metal4: added new example. (#9458, #9451) [@AmelieHeinrich]
+
+
+-----------------------------------------------------------------------
+ VERSION 1.92.8 (Released 2026-05-12)
+-----------------------------------------------------------------------
+
+Decorated log and release notes: https://github.com/ocornut/imgui/releases/tag/v1.92.8
+
+Breaking Changes:
+
+- DrawList: swapped the last two arguments of `AddRect()`, `AddPolyline()`, `PathStroke()`.
+   - Before: `void ImDrawList::AddRect(ImVec2 p_min, ImVec2 p_max, ImU32 col, float rounding = 0.0f, ImDrawFlags flags = 0, float thickness = 1.0f);`
+   - After:  `void ImDrawList::AddRect(ImVec2 p_min, ImVec2 p_max, ImU32 col, float rounding = 0.0f, float thickness = 1.0f, ImDrawFlags flags = 0);`
+   - Before: `void ImDrawList::AddPolyline(const ImVec2* points, int num_points, ImU32 col, ImDrawFlags flags, float thickness);`
+   - After:  `void ImDrawList::AddPolyline(const ImVec2* points, int num_points, ImU32 col, float thickness, ImDrawFlags flags = 0);`
+   - Before: `void ImDrawList::PathStroke(ImU32 col, ImDrawFlags flags = 0, float thickness = 1.0f);`
+   - After:  `void ImDrawList::PathStroke(ImU32 col, float thickness = 1.0f, ImDrawFlags flags = 0);`
+  Added inline redirection functions when IMGUI_DISABLE_OBSOLETE_FUNCTIONS is off.
+  Marked the old functions are =delete when IMGUI_DISABLE_OBSOLETE_FUNCTIONS is on, to allow for better type-checking.
+  Effectively the typical call site is changing from:
+   - Before: `window->DrawList->AddRect(p_min, p_max, color, rounding, ImDrawFlags_None, border_size);`
+   - After:  `window->DrawList->AddRect(p_min, p_max, color, rounding, border_size);`
+  Notes:
+   - Users of C++ and other languages with type-checking will be notified at compile-time of any mistakes.
+   - Users of high-level bindings or languages with no type-checking will be notified at runtime via an assert for invalid flags value.
+     If you are a binding maintainer consider doing something to facilitate transition or error detection.
+   - This is perhaps the worst breaking change in our history :( but it makes ImDrawList function signatures consistent.
+     As we are aiming to add flags and features to variety of ImDrawList functions, that consistency becomes more important.
+     The new order is also more convenient as `flags` are less frequently used than `thickness` in real code.
+   - As a general policy in Dear ImGui, all our flags default to 0 so ImDrawFlags_None was likely written 0 in some call sites.
+   - Consider adding `#define IMGUI_DISABLE_OBSOLETE_FUNCTIONS` in your imconfig.h, even temporarily, to clean up legacy code.
+   - Reminder: you do NOT need to specify `ImDrawFlags_RoundCornersAll` for rounding, it is already the default!
+- DrawList: obsoleted `ImDrawCallback_ResetRenderState` in favor of using `ImGui::GetPlatformIO().DrawCallback_ResetRenderState`,
+    which is part of our new standard draw callbacks. (#9378)
+    Redirecting the earlier value into the later one when set, so both old and new code should work.
+- DrawList: changed value of `ImDrawFlags_Closed`. It was previously advertised as "always == 1" when introduced
+  in 1.82 (2021/02), in order to facilitate backward compatibility with the legacy `bool closed` flag. This
+  guarantee has been removed. The bit is reserved, and `AddPolyline()`, `PathStroke()` will assert when it is used.
+- Backends:
+  - Vulkan: redesigned to use separate ImageView + Sampler instead of Combined Image Sampler. (#914)
+    This change allows us to facilitate changing samplers, in line with other backends. [@yaz0r, @ocornut]
+    - When creating your own descriptor pool (instead of letting backend creates its own):
+      - Before: need at least `IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE` descriptors of type `VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER`.
+      - After:  need at least `IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE` descriptors of type `VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE`.
+                            + `IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE`       descriptors of type `VK_DESCRIPTOR_TYPE_SAMPLER`.
+    - When registering custom textures: changed ImGui_ImplVulkan_AddTexture() signature to remove Sampler.
+      - Before: `ImGui_ImplVulkan_AddTexture(VkSampler, VkImageView, VkImageLayout)`
+      - After:  `ImGui_ImplVulkan_AddTexture(VkImageView, VkImageLayout)`
+      - Kept inline redirection function that ignores the sampler (will obsolete).
+  - DirectX10, DirectX11, SDLGPU3, Vulkan: removed samplers from `ImGui_ImplXXXX_RenderState`.
+    Prefer to use backend-agnostic DrawCallback_SetSamplerLinear which works everywhere! (#9378)
+    If there is a legit need/request for them or any render state we can always add them back.
+  - OpenGL3: the new sampler support system prioritize using glBindSampler() when available,
+    which would override glTexParameter() settings you may have set on custom textures. (#9378)
+
+Other Changes:
+
+- DrawList:
+  - Added room in `ImGuiPlatformIO` for standard backend-agnostic draw callbacks. Those callbacks
+    are setup/provided by the backend and available in most of our standard backends.
+    They allow backend-agnostic code from e.g. switching to a Nearest/Point sampler without
+    messing with custom Renderer-specific callbacks.
+      platform_io.DrawCallback_ResetRenderState;    // Request to reset the graphics/render state.
+      platform_io.DrawCallback_SetSamplerLinear;    // Request to set current texture sampling to Linear
+      platform_io.DrawCallback_SetSamplerNearest;   // Request to set current texture sampling to Nearest/Point
+    Note that some backends might not support all callbacks.
+    (#9378, #9371, #3590, #8926, #2973, #7485, #7468, #6969, #5118, #7616, #9173, #8322, #7230,
+    #5999, #6452, #5156, #7342, #7592, #7511)
+  - Made `AddCallback()` user data default to Null for convenience.
+  - Added `AddLineH()`, `AddLineV()` helpers to draw horizontal and vertical lines. [@memononen]
+    The new functions are more optimal and will be part of a larger effort in 1.93 to fix
+    inconsistencies and improve the DrawList API. In the current API, `AddLine()` adds a "magic" +0.5f
+    offset and then center the line, whereas AddLineH()/AddLineV() use the right side of the line to expand.
+    For thickness=1.0f lines this is equivalent:
+      `AddLine({10,3}, {20,3}, ...)` --> `AddLineH(x1=10, x2=20, y=3, ...)`.
+      `AddLine({3,10}, {3,20}, ...)` --> `AddLineV(x=3, y1=10, y2=20, ...)`.
+    For larger integer thickness, AddLine() will center but may be blurry, AddLineH()/AddLineV()
+    will expand "inside" (to the right side) and will always be sharp.
+    A subsequent release will expand on those concepts and add new options.
+- InputText:
+  - InputTextMultiline: fixed an issue processing deactivation logic when an active
+    multi-line edit is clipped due to being out of view.
+  - Fixed a crash when toggling ReadOnly while active. (#9354)
+  - `CharFilter` callback event sets CursorPos/SelectionStart/SelectionEnd. (#816)
+- Tables:
+  - Fixed issues reporting ideal size to parent window/container: (#9352, #7651)
+    - When both scrollbars are visible but only one of ScrollX/ScrollY was explicitly requested.
+    - When vertical scrollbar was not at the top, the computation was often incorrect.
+- Windows:
+  - Fixed a single-axis auto-resizing feedback loop issue with nested containers
+    and varying scrollbar visibility. (#9352)
+  - Detect and report error when calling End() instead of EndPopup() on a popup. (#9351)
+  - Child windows with only `ImGuiChildFlags_AutoResizeY` flag keep using the proportional
+    default `ItemWidth`. (#9355)
+  - Using mouse wheel to scroll takes and keeps ownership of the corresponding keys
+    (e.g. `ImGuiKey_MouseWheelY`) while a wheeling window is locked. (#2604, #3795)
+- InputInt, InputFloat, InputScalar:
+  - Reinstated `ImGuiInputTextFlags_EnterReturnsTrue` support which was removed in 1.91.4.
+    (#8665, #9299, #8065, #3946, #6284, #9117)
+    - Fixed the fact that it didn't return true when validating same value.
+    - Fixed losing value when tabbing out or losing focus.
+    - Made it that pressing +/- step buttons also return true, which is in line
+      with 1.91.4 behavior.
+    - In a majority of cases you should use `IsItemDeactivatedAfterEdit()` instead,
+      but it still has a few edge cases flaws (to be addressed soon).
+  - Allow passing a format string that does not display the scalar value.
+    Parsing input with default format for the type. (#9385) [@FireFox2000000]
+- Multi-Select:
+  - Fixed an issue using Multi-Select within a Table causing column width measurement to
+    be invalid when trailing column contents is not submitted in the last row. (#9341, #8250)
+  - Fixed an issue using Multi-Select within a Table with the right-most column visible,
+    which could lead to an extra vertical offset in the Header row. (#8250)
+- Multi-Select + Box-Select:
+  - Fixed an issue using `ImGuiMultiSelectFlags_BoxSelect1d` mode while scrolling.
+    Notably, using mouse wheel while holding a box-selection could lead items close to windows
+    edges from not being correctly unselected. (#7994, #8250, #7821, #7850, #7970)
+  - Improved dirty/unclip rectangle logic for `ImGuiMultiSelectFlags_BoxSelect2d`.
+  - Fixed an issue using `ImGuiMultiSelectFlags_BoxSelect2d` mode, where
+    items out of view wouldn't be properly selected while scrolling while mouse cursor
+    is hovering outside of selection scope. (#7994, #1861, #6518)
+  - Fixed an issue where items out of horizontal view would sometimes lead
+    to incorrect merging of sequential selection requests while also scrolling fast
+    enough to overlap multiple rows during a frame. (#7994, #1861, #6518)
+  - Fixed an issue using `ImGuiMultiSelectFlags_BoxSelect2d` mode in a Table
+    while relying on the `TableNextColumn()` return value to perform coarse clipping. (#7994)
+  - Disabled merging consecutive selection requests as we have no reliable
+    way of detecting if user has submitted all consecutive items without clipping gaps,
+    and `ImGuiSelectionUserData` is technically opaque storage. (#7994, #1861)
+    (we will probably bring this back as a minor optimization if we have a way to for
+    user to tell us `ImGuiSelectionUserData` are indices)
+  - Fixes for using across nested child windows. (#8364)
+  - Box-Select + Clipper: fixed an issue selecting items while scrolling while a clipper
+    active. (#7994, #8250, #7821, #7850, #7970)
+  - Box-Select + Tables: fixed an issue using box-selection in a tables with
+    items straying out of columns boundaries. (#7994, #2221)
+  - Box-Select + Tables: fixed an issue when calling `BeginMultiSelect()` in a table
+    before layout has been locked (first row or headers row submitted). (#8250)
+- Menus:
+  - BeginMenu()/MenuItem(): fixed accidental triggering of child menu items when
+    opening a menu inside a small host window forcing the child menu window to be
+    repositioned under the mouse cursor. (#8233, #9394)
+    Done by reworking `BeginMenu()`/`MenuItem()`: they previously avoiding taking
+    ActiveID + key/click ownership (in order to allow releasing button on another item).
+    Now they take them and release them once the mouse is moved outside item boundaries.
+- Inputs:
+  - SetItemKeyOwner(): return true if ownership has been requested, which typically
+    needs to to checked for gating further tests. This is important as the function
+    may fail. (#456, #2637, #2620, #2891, #3370, #3724, #4828, #5108, #5242, #5641)
+  - SetItemKeyOwner(): does not set ownership is key is already taken. Effectively
+    this makes using `SetItemKeyOwner(ImGuiKey_MouseWheelY)` over an item work as
+    expected while not having item react if a scroll wheel is actively in progress.
+    May be subject to further redesign, e.g. conditional flags. Feedback welcome!
+- Style:
+  - Checkbox: added `ImGuiCol_CheckboxSelectedBg` to change or accentuate the
+    background color of checked/mixed checkboxes. (#9392)
+  - Added `ImGuiStyleVar_DragDropTargetRounding`. (#9056)
+  - Fixed vertical scrollbar top coordinates when using thick borders on windows
+    with no title bar and no menu bar. (#9366)
+- Fonts:
+  - imgui_freetype: add FreeType headers & compiled version in 'About Dear ImGui' details.
+  - Assert when using MergeMode with an explicit size over a target font with an implicit
+    size, as scale factor are likely erroneous. (#9361)
+- Clipper:
+  - Improved error reporting when misusing the clipper inside a table (prioritize
+    reporting the common clipper error over a table sanity check assert). (#9350)
+  - Tweaked assert triggering when first item height measurement fails, and made it
+    a better recoverable error. (#9350)
+- Misc:
+  - Minor optimization: reduce redundant label scanning in common widgets.
+  - Added missing Test Engine hooks for `PlotLines()`, `PlotHistogram()`, `VSliderXXX()`
+    and `TableHeader()` functions.
+- Demo:
+  - Added simple demo for a scrollable/zoomable image viewer with a grid.
+    Available in `Examples->Image Viewer` and `Widgets->Images`.
+- Backends:
+  - Added support for new standardized draw callbacks in most backends: (#9378)
+    - Allegro5:     Reset     n/a               n/a
+    - DX9:          Reset     SetSamplerLinear  SetSamplerNearest
+    - DX10:         Reset     SetSamplerLinear  SetSamplerNearest
+    - DX11:         Reset     SetSamplerLinear  SetSamplerNearest
+    - DX12:         Reset     SetSamplerLinear  SetSamplerNearest
+    - Metal:        Reset     SetSamplerLinear  SetSamplerNearest
+    - OpenGL2:      Reset     SetSamplerLinear  SetSamplerNearest
+    - OpenGL3+:     Reset     SetSamplerLinear  SetSamplerNearest
+    - SDLGPU3:      Reset     SetSamplerLinear  SetSamplerNearest
+    - SDLRenderer2: Reset     n/a               n/a
+    - SDLRenderer3: Reset     SetSamplerLinear  SetSamplerNearest
+    - Vulkan:       Reset     SetSamplerLinear  SetSamplerNearest
+    - WebGPU:       Reset     SetSamplerLinear  SetSamplerNearest
+    (Vulkan backend by @yaz0r, Metal by @ssh4net, others by @ocornut)
+  - GLFW: added a Win32-specific implementation of `ImGui_ImplGlfw_GetContentScaleXXXX`
+    functions for legacy GLFW 3.2. (#9003)
+  - Metal: avoid redundant vertex buffer bind in `SetupRenderState()`, which leads
+    to validation issue. (#9343) [@Hunam6]
+  - Metal: use a dedicated `bufferCacheLock` to avoid crashing when `bufferCache` is
+    replaced by a new object while being used for `@synchronize()`. (#9367) [@andygrundman]
+  - SDL2: made `ImGui_ImplSDL2_GetContentScaleForWindow()`/`ImGui_ImplSDL2_GetContentScaleForDisplay()`
+    helpers return a minimum of 1.0f, as some Linux setup seems to report <1.0f value
+    and this breaks scaling border size. (#9369)
+  - WebGPU: rework choice/detection of using WGSL/SPIR-V shader on WGVK. (#9316, #9246, #9257, #9387)
+- Examples:
+  - Update VS toolset in all .vcxproj from VS2015 (v140) to VS2017 (v141). The later is the
+    first that supports vcpkg. Onward we will likely stop testing building the library with VS2015.
+  - GLFW+Vulkan, SDL2+Vulkan, SDL3+Vulkan, Win32+Vulkan: reworked to create a descriptor pool with:
+    - `IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE` descriptors of type `VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE`.
+    - `IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE`       descriptors of type `VK_DESCRIPTOR_TYPE_SAMPLER`.
+
+
 -----------------------------------------------------------------------
  VERSION 1.92.7 (Released 2026-04-02)
 -----------------------------------------------------------------------
@@ -694,7 +1251,7 @@ Other Changes:
     not available. (#5924, #5562)
   - SDL3+DirectX11: Added SDL3+DirectX11 example. (#8956, #8957) [@tomaz82]
   - Win32+DirectX12: Rework synchronization logic. (#8961) [@RT2Code]
-  - Made examples's main.cpp consistent with returning 1 on error.
+  - Made examples' main.cpp consistent with returning 1 on error.
 
 
 -----------------------------------------------------------------------
@@ -1205,7 +1762,7 @@ Non-breaking Fonts/Textures related changes:
 - Fonts: ImFontAtlas::AddFontXXX() can fail more gracefully if error handling is configured
   to not assert (this will be better exposed via future font flags).
 - Fonts: added style.FontScaleBase scaling factor (previously called io.FontGlobalScale).
-- Fonts: added style.FontScaleDpi scaling factor. This is designed to be be changed on
+- Fonts: added style.FontScaleDpi scaling factor. This is designed to be changed on
   per-monitor/per-viewport basis, which `io.ConfigDpiScaleFonts` does automatically.
   (which is why it is separate from FontScaleBase).
 - Fonts: added optional font_size parameter to ImGui::PushFont() function.
@@ -2360,7 +2917,7 @@ Other changes:
 - Backends: Vulkan: Remove Volk/ from volk.h #include directives. (#7722, #6582, #4854)
   [@martin-ejdestig]
 - Examples: SDL3: Remove use of SDL_HINT_IME_NATIVE_UI since new SDL_HINT_IME_IMPLEMENTED_UI
-  values has a more suitable default for our case case.
+  values has a more suitable default for our case.
 - Examples: GLFW+Vulkan, SDL+Vulkan: handle swap chain resize even without Vulkan
   returning VK_SUBOPTIMAL_KHR, which doesn't seem to happen on Wayland. (#7671)
   [@AndreiNego, @ocornut]
@@ -3136,8 +3693,10 @@ Breaking changes:
   input queue. This is automatically cleared by io.ClearInputKeys(). (#4921)
 - ImDrawData: CmdLists[] array is now owned, changed from 'ImDrawList**' to
   'ImVector<ImDrawList*>'. Majority of users shouldn't be affected, but you
-  cannot compare to NULL nor reassign manually anymore.
-  Instead use AddDrawList(). Allocation count are identical. (#6406, #4879, #1878)
+  cannot compare to NULL nor reassign manually anymore. (#6406, #4879, #1878)
+  - Allocation count are identical.
+  - Use `draw_data->CmdLists.Size` instead of `draw_list->CmdListsCount`!
+  - Use `AddDrawList()` to add to a `ImDrawData`.
 
 Other changes:
 
@@ -4311,7 +4870,7 @@ Other Changes:
 - ColorPicker4: Fixed picker being unable to select exact 1.0f color when dragging toward the edges
   of the SV square (previously picked 0.999989986f). (#3517) [@rokups]
 - Menus: Fixed vertical alignments of MenuItem() calls within a menu bar (broken in 1.84). (#4538)
-- Menus: Improve closing logic when moving diagonally in empty between between parent and child menus to
+- Menus: Improve closing logic when moving diagonally in empty space between parent and child menus to
   accommodate for varying font size and dpi.
 - Menus: Fixed crash when navigating left inside a child window inside a sub-menu. (#4510).
 - Menus: Fixed an assertion happening in some situations when closing nested menus (broken in 1.83). (#4640)

docs/CONTRIBUTING.md

@@ -3,7 +3,7 @@
 ## Index
 
 - [Getting Started & General Advice](#getting-started--general-advice)
-- [Issues vs Discussions](#issues-vs-discussions)
+- [Using "Issues" for almost everything!](using-issues-for-almost-everything)
 - [How to open an Issue](#how-to-open-an-issue)
 - [How to open a Pull Request](#how-to-open-a-pull-request)
 - [Copyright / Contributor License Agreement](#copyright--contributor-license-agreement)
@@ -23,18 +23,20 @@
 - If you get a crash or assert, use a debugger to locate the line triggering it and read the comments around.
 - Please don't be a [Help Vampire](https://slash7.com/2006/12/22/vampires/).
 
-## 'Issues' vs 'Discussions'
+## Using "Issues" for almost everything!
 
-We are happy to use 'Issues' for many type of open-ended questions. We are encouraging 'Issues' becoming an enormous, centralized and cross-referenced database of Dear ImGui contents.
+We are happy to use 'Issues' for many type of open-ended questions.
+We are encouraging 'Issues' becoming an enormous, centralized and cross-referenced database of Dear ImGui contents.
 
-Only if you:
+- Need help using the API? Open an Issue!
+- Want to suggest a feature? Open an Issue!
+- etc.
+
+ONLY IN THOSE CASE you can use the [Discussions forums](https://github.com/ocornut/imgui/discussions)
 - Cannot BUILD or LINK examples.
 - Cannot BUILD, or LINK, or RUN Dear ImGui in your application or custom engine.
-- Cannot LOAD a font.
 
-Then please [use the Discussions forums](https://github.com/ocornut/imgui/discussions) instead of opening an issue.
-
-If Dear ImGui is successfully showing in your app and you have used Dear ImGui before, you can open an Issue. Any form of discussions is welcome as a new issue.
+If Dear ImGui is successfully showing in your app and you have used Dear ImGui before, you can open an Issue. Any form of discussions is welcome as a new Issue.
 
 ## How to open an issue
 

docs/EXAMPLES.md

@@ -60,16 +60,20 @@ Android + OpenGL3 (ES) example. <BR>
 
 [example_apple_metal/](https://github.com/ocornut/imgui/tree/master/examples/example_apple_metal/) <BR>
 OSX & iOS + Metal example. <BR>
-= main.m + imgui_impl_osx.mm + imgui_impl_metal.mm <BR>
+= main.mm + imgui_impl_osx.mm + imgui_impl_metal.mm <BR>
 It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
-(NB: imgui_impl_osx.mm is currently not as feature complete as other platforms backends.
-You may prefer to use the GLFW Or SDL backends, which will also support Windows and Linux.)
+
+[example_apple_metal4/](https://github.com/ocornut/imgui/blob/master/examples/example_apple_metal4/) <BR>
+OSX & iOS + Metal4 example, Mac only. <BR>
+= main.mm + imgui_impl_osx.mm + imgui_impl_metal4.mm <BR>
 
 [example_apple_opengl2/](https://github.com/ocornut/imgui/blob/master/examples/example_apple_opengl2/) <BR>
 OSX + OpenGL2 example. <BR>
 = main.mm + imgui_impl_osx.mm + imgui_impl_opengl2.cpp <BR>
-(NB: imgui_impl_osx.mm is currently not as feature complete as other platforms backends.
- You may prefer to use the GLFW Or SDL backends, which will also support Windows and Linux.)
+
+[example_apple_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_apple_opengl3/) <BR>
+OSX + OpenGL3 example. <BR>
+= main.mm + imgui_impl_osx.mm + imgui_impl_opengl3.cpp <BR>
 
 [example_glfw_wgpu/](https://github.com/ocornut/imgui/blob/master/examples/example_glfw_wgpu/) <BR>
 GLFW + WebGPU example. Supports Emscripten (web), Dawn (native), WGPU (native). <BR>
@@ -115,6 +119,16 @@ Because this application doesn't create a window nor a graphic context, there's
 Please note that imgui_impl_null itself is a rather empty backend. We provide it for consistency but
 it is similarly easy to create a skeleton application without the null backend.
 
+[example_qnx_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_qnx_opengl3/) <BR>
+QNX Screen + OpenGL ES 3 example. <BR>
+= main.cpp + imgui_impl_qnx.cpp + imgui_impl_opengl3.cpp <BR>
+Uses the QNX recursive make build system and compiles the OpenGL3 renderer with `IMGUI_IMPL_OPENGL_ES3`.
+
+[example_qnx_vulkan/](https://github.com/ocornut/imgui/blob/master/examples/example_qnx_vulkan/) <BR>
+QNX Screen + Vulkan example using `VK_QNX_screen_surface`. <BR>
+= main.cpp + imgui_impl_qnx.cpp + imgui_impl_vulkan.cpp <BR>
+Uses the QNX recursive make build system and the Vulkan backend's example helper structures.
+
 [example_sdl2_directx11/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl2_directx11/) <BR>
 SDL2 + DirectX11 example, Windows only. <BR>
 = main.cpp + imgui_impl_sdl2.cpp + imgui_impl_dx11.cpp <BR>
@@ -164,6 +178,10 @@ SDL3 + DirectX11 examples, Windows only. <BR>
 SDL3 + Metal example, Mac only. <BR>
 = main.cpp + imgui_impl_sdl3.cpp + imgui_impl_metal.mm <BR>
 
+[example_sdl3_metal4/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl3_metal/) <BR>
+SDL3 + Metal4 example, Mac only. <BR>
+= main.cpp + imgui_impl_sdl3.cpp + imgui_impl_metal4.mm <BR>
+
 [example_sdl3_opengl3/](https://github.com/ocornut/imgui/blob/master/examples/example_sdl3_opengl3/) <BR>
 SDL3 (Win32, Mac, Linux, etc.) + OpenGL3+/ES2/ES3 example. <BR>
 = main.cpp + imgui_impl_sdl3.cpp + imgui_impl_opengl3.cpp <BR>

docs/FAQ.md

@@ -9,42 +9,58 @@ or view this file with any Markdown viewer.
 
 ## Index
 
-| **Q&A: Basics** |
-:---------------------------------------------------------- |
-| [Where is the documentation?](#q-where-is-the-documentation) |
-| [What is this library called?](#q-what-is-this-library-called) |
-| [What is the difference between Dear ImGui and traditional UI toolkits?](#q-what-is-the-difference-between-dear-imgui-and-traditional-ui-toolkits) |
-| [Which version should I get?](#q-which-version-should-i-get) |
-| **Q&A: Integration** |
-| **[How to get started?](#q-how-to-get-started)** |
-| **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-my-application)** |
-| [How can I enable keyboard or gamepad controls?](#q-how-can-i-enable-keyboard-or-gamepad-controls) |
-| [How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)](#q-how-can-i-use-this-on-a-machine-without-mouse-keyboard-or-screen-input-share-remote-display) |
-| [How can I create my own backend?](#q-how-can-i-create-my-own-backend)
-| [I integrated Dear ImGui in my engine and little squares are showing instead of text...](#q-i-integrated-dear-imgui-in-my-engine-and-little-squares-are-showing-instead-of-text) |
-| [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around) |
-| [I integrated Dear ImGui in my engine and some elements are displaying outside their expected windows boundaries...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-displaying-outside-their-expected-windows-boundaries) |
-| **Q&A: Usage** |
-| **[About the ID Stack system...](#q-about-the-id-stack-system)**<br>**[How can I have multiple widgets with the same label?](#q-how-can-i-have-multiple-widgets-with-the-same-label) (using `##` or `PushID()`)**<br>**[How can I have widgets with an empty label?](#q-how-can-i-have-widgets-with-an-empty-label) (using `##`)**<br>**[How can I animate the label of an existing widget?](#q-how-can-i-change-the-label-of-an-existing-widget) (using `###`)**<br>**[General description of the label and ID Stack system.](#general-description-of-the-label-and-id-stack-system)** |
-| [How can I display an image?](#q-how-can-i-display-an-image)<br>[What are ImTextureID/ImTextureRef?](#q-what-are-imtextureidimtextureref)|
-| [How can I use maths operators with ImVec2?](#q-how-can-i-use-maths-operators-with-imvec2) |
-| [How can I use my own maths types instead of ImVec2/ImVec4?](#q-how-can-i-use-my-own-maths-types-instead-of-imvec2imvec4) |
-| [How can I interact with standard C++ types (such as std::string and std::vector)?](#q-how-can-i-interact-with-standard-c-types-such-as-stdstring-and-stdvector) |
-| [How can I display custom shapes? (using low-level ImDrawList API)](#q-how-can-i-display-custom-shapes-using-low-level-imdrawlist-api) |
-| **Q&A: Fonts, Text** |
-| [How should I handle DPI in my application?](#q-how-should-i-handle-dpi-in-my-application) |
-| [How can I load a different font than the default?](#q-how-can-i-load-a-different-font-than-the-default) |
-| [How can I easily use icons in my application?](#q-how-can-i-easily-use-icons-in-my-application) |
-| [How can I load multiple fonts?](#q-how-can-i-load-multiple-fonts) |
-| [How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?](#q-how-can-i-display-and-input-non-latin-characters-such-as-chinese-japanese-korean-cyrillic) |
-| **Q&A: Concerns** |
-| [Who uses Dear ImGui?](#q-who-uses-dear-imgui) |
-| [Can you create elaborate/serious tools with Dear ImGui?](#q-can-you-create-elaborateserious-tools-with-dear-imgui)  |
-| [Can you reskin the look of Dear ImGui?](#q-can-you-reskin-the-look-of-dear-imgui) |
-| [Why using C++ (as opposed to C)?](#q-why-using-c-as-opposed-to-c) |
-| **Q&A: Community** |
-| [How can I help?](#q-how-can-i-help) |
+### Basics
 
+- [Where is the documentation?](#q-where-is-the-documentation)
+- [What is this library called?](#q-what-is-this-library-called)
+- [What is the difference between Dear ImGui and traditional UI toolkits?](#q-what-is-the-difference-between-dear-imgui-and-traditional-ui-toolkits)
+- [Which version should I get?](#q-which-version-should-i-get)
+
+### Integration
+
+- **[How to get started?](#q-how-to-get-started)**
+- **[How can I tell whether to dispatch mouse/keyboard to Dear ImGui or my application?](#q-how-can-i-tell-whether-to-dispatch-mousekeyboard-to-dear-imgui-or-my-application)**
+- [How can I enable keyboard or gamepad controls?](#q-how-can-i-enable-keyboard-or-gamepad-controls)
+- [How can I use this on a machine without mouse, keyboard or screen? (input share, remote display)](#q-how-can-i-use-this-on-a-machine-without-mouse-keyboard-or-screen-input-share-remote-display)
+- [How can I create my own backend?](#q-how-can-i-create-my-own-backend)
+- [I integrated Dear ImGui in my engine and little squares are showing instead of text...](#q-i-integrated-dear-imgui-in-my-engine-and-little-squares-are-showing-instead-of-text)
+- [I integrated Dear ImGui in my engine and some elements are clipping or disappearing when I move windows around...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-clipping-or-disappearing-when-i-move-windows-around)
+- [I integrated Dear ImGui in my engine and some elements are displaying outside their expected windows boundaries...](#q-i-integrated-dear-imgui-in-my-engine-and-some-elements-are-displaying-outside-their-expected-windows-boundaries)
+
+### Usage
+
+- **[About the ID Stack system...](#q-about-the-id-stack-system)**
+  - **[How can I have multiple widgets with the same label?](#q-how-can-i-have-multiple-widgets-with-the-same-label) (using `##` or `PushID()`)**
+  - **[How can I have widgets with an empty label?](#q-how-can-i-have-widgets-with-an-empty-label) (using `##`)**
+  - **[How can I make a label dynamic?](#q-how-can-i-make-a-label-dynamic) (using `###`)**
+  - **[General description of the label and ID Stack system.](#general-description-of-the-label-and-id-stack-system)**
+- [How can I display an image?](#q-how-can-i-display-an-image), [What are ImTextureID/ImTextureRef?](#q-what-are-imtextureidimtextureref)
+- [How can I use maths operators with ImVec2?](#q-how-can-i-use-maths-operators-with-imvec2)
+- [How can I use my own maths types instead of ImVec2/ImVec4?](#q-how-can-i-use-my-own-maths-types-instead-of-imvec2imvec4)
+- [How can I interact with standard C++ types (such as std::string and std::vector)?](#q-how-can-i-interact-with-standard-c-types-such-as-stdstring-and-stdvector)
+- [How can I display custom shapes? (using low-level ImDrawList API)](#q-how-can-i-display-custom-shapes-using-low-level-imdrawlist-api)
+- [About Multi-Threading](#about-multi-threading)
+
+### Fonts, Text
+
+- [How should I handle DPI in my application?](#q-how-should-i-handle-dpi-in-my-application)
+- [How can I load a different font than the default?](#q-how-can-i-load-a-different-font-than-the-default)
+- [How can I easily use icons in my application?](#q-how-can-i-easily-use-icons-in-my-application)
+- [How can I load multiple fonts?](#q-how-can-i-load-multiple-fonts)
+- [How can I display and input non-Latin characters such as Chinese, Japanese, Korean, Cyrillic?](#q-how-can-i-display-and-input-non-latin-characters-such-as-chinese-japanese-korean-cyrillic)
+
+### Concerns
+
+- [Who uses Dear ImGui?](#q-who-uses-dear-imgui)
+- [Can you create elaborate/serious tools with Dear ImGui?](#q-can-you-create-elaborateserious-tools-with-dear-imgui)
+- [Can you reskin the look of Dear ImGui?](#q-can-you-reskin-the-look-of-dear-imgui)
+- [Why using C++ (as opposed to C)?](#q-why-using-c-as-opposed-to-c)
+
+### Community
+
+- [How can I help?](#q-how-can-i-help)
+
+--------
 
 # Q&A: Basics
 
@@ -85,16 +101,17 @@ Here's a very simplified comparison between the approach taken by Dear ImGui vs
 |--------------------------|--------------------------|
 | UI fully issued on every update. | UI issued once then later modified. |
 | UI layout is fully dynamic and can change at any time.<BR>UI is generally emitted programmatically, which empowers reflecting a dynamic set of data. | UI layout is mostly static.<BR>UI may be emitted programmatically or from data created by offline tools. UI need extra code to evolve, which is often tedious and error-prone if it needs to be reflecting dynamic data and systems. |
-| Application can submit UI based on arbitrary logic and then forget about it. | Application needs more bookkeeping of UI elements. |
+| UI system is optimized for the worst case and designed to be optimal even under frequent changes. | UI system is optimized for the case where nothing changes. Performances tends to degrade when anything changes. |
+| Application can submit UI based on arbitrary logic without bookkeeping all aspects of that logic. | Application needs more bookkeeping of UI elements. |
 | UI library stores minimal amounts of data. At one point in time, it typically doesn't know or remember which other widgets are displayed and which widgets are coming next. As a result, certain layout features (alignment, resizing) are not as easy to implement or require ad-hoc code. | UI library stores entire widgets tree and state. UI library can use this retained data to easily layout things. |
 | UI code may be added anywhere.<BR>You can even create UI to edit a local variable! | UI code needs to be added in dedicated spots. |
 | UI layout/logic/action/data bindings are all nearby in the code. | UI layout/logic/action/data bindings in distinct functions, files or formats. |
 | Data is naturally always synchronized. | Use callback/signal/slot for synchronizing data (error-prone). |
-| API is simple and easy to learn. In particular, doing basic things is very easy. | API is more complex and specialized. |
-| API is low-level (raw language types). | API are higher-level (more abstractions, advanced language features). |
-| Less fancy look and feel. | Standard look and feel. |
+| API is simple and easy to learn. In particular, doing basic things is very easy.<BR>Attractive to more programmers. | API is more complex and specialized.<BR>Tends to require specialized programmers. |
+| API is low-level. Few abstractions, uses raw language types and your existing data. | API are higher-level. More abstractions, advanced language features. |
+| Less fancy look and feel. But keeps improving :) | Standard look and feel. |
 | Compile yourself. Easy to debug, hack, modify, study. | Mostly use precompiled libraries. Compiling, modifying or studying is daunting if not impossible. |
-| Run on every platform. | Run on limited desktop platforms. |
+| Run on every platform (incl. web, consoles, mobiles, legacy systems). | Run on major desktop platforms. |
 
 Idiomatic Dear ImGui code:
 ```cpp
@@ -553,8 +570,8 @@ typedef ImU64 ImTextureID;  // Default: store up to 64-bits (any pointer or inte
 // Store a ImTextureID _or_ a ImTextureData*.
 struct ImTextureRef
 {
-    ImTextureRef()                          { _TexData = NULL; _TexID = ImTextureID_Invalid; }
-    ImTextureRef(ImTextureID tex_id)        { _TexData = NULL; _TexID = tex_id; }
+    ImTextureRef()                          { _TexData = nullptr; _TexID = ImTextureID_Invalid; }
+    ImTextureRef(ImTextureID tex_id)        { _TexData = nullptr; _TexID = tex_id; }
     inline ImTextureID  GetTexID() const    { return _TexData ? _TexData->TexID : _TexID; }
 
     // Members (either are set, never both!)
@@ -572,7 +589,7 @@ struct ImTextureRef
    We intentionally do not provide an `ImTextureRef` constructor for this: we don't expect this to be frequently useful to the end-user, and it would be erroneously called by many legacy code.
  - There is no constructor to create a `ImTextureRef` from a `ImTextureData*` as we don't expect this to be useful to the end-user, and it would be erroneously called by many legacy code.
  - If you want to bind the current atlas when using custom rectangles, you can use `io.Fonts->TexRef`.
- - Binding generators for languages such as C (which don't have constructors), should provide a helper, e.g. `inline ImTextureRef ImTextureRefFromID(ImTextureID tex_id) { ImTextureRef tex_ref = { ._TexData = NULL, .TexID = tex_id }; return tex_ref; }`
+ - Binding generators for languages such as C (which don't have constructors), should provide a helper, e.g. `inline ImTextureRef ImTextureRefFromID(ImTextureID tex_id) { ImTextureRef tex_ref = { ._TexData = nullptr, .TexID = tex_id }; return tex_ref; }`
 
 **Please read documentations or tutorials on your graphics API to understand how to display textures on the screen before moving onward.**
 
@@ -666,6 +683,7 @@ This way you will be able to use your own types everywhere, e.g. passing `MyVect
 ---
 
 ### Q: How can I interact with standard C++ types (such as std::string and std::vector)?
+
 - Being highly portable (backends/bindings for several languages, frameworks, programming styles, obscure or older platforms/compilers), and aiming for compatibility & performance suitable for every modern real-time game engine, Dear ImGui does not use any of std C++ types. We use raw types (e.g. char* instead of std::string) because they adapt to more use cases.
 - To use ImGui::InputText() with a std::string or any resizable string class, see [misc/cpp/imgui_stdlib.h](https://github.com/ocornut/imgui/blob/master/misc/cpp/imgui_stdlib.h).
 - To use combo boxes and list boxes with `std::vector` or any other data structure: the `BeginCombo()/EndCombo()` API
@@ -685,6 +703,10 @@ One possible implementation of a helper to facilitate printf-style building of s
 This is a small helper where you can instance strings with configurable local buffers length. Many game engines will
 provide similar or better string helpers.
 
+Using string views:
+
+- String view types such as `std::string_view` may be used with the [feature/string_view](https://github.com/ocornut/imgui/tree/features/string_view) branch. This branch is actively maintained and supported. Please provide feedback if you use it. We are waiting for a good moment to merge it.
+
 ##### [Return to Index](#index)
 
 ---
@@ -725,6 +747,20 @@ ImGui::End();
 
 ---
 
+### About Multi-Threading
+
+A same Dear ImGui context may be not used from multiple threads in parallel.
+
+If you want to use a same context within parallel tasks for occasional debug purpose, consider using a lock.
+
+If you want to submit contents from a main/update thread but render Dear ImGui output in a dedicated render thread, you'll need to stage `ImDrawData` and texture requests. See the `ImDrawDataSnapshot` and `ImTextureQueue` helpers in [imgui_threaded_rendering](https://github.com/ocornut/imgui_club#imgui_threaded_rendering). Also see topics with [label: multi-threading](https://github.com/ocornut/imgui/issues?q=label%3Amulti-threading).
+
+If you use multiple Dear ImGui contexts and want to use them from multiple threads, you need to `#define GImGui` to become a TLS variable (see details near the definition of `GImGui`. If you need to display multiple contexts simultaneously, consider using [imgui_multicontext_compositor](https://github.com/ocornut/imgui_club#imgui_multicontext_compositor). Also see topics with [label: multi-contexts](https://github.com/ocornut/imgui/issues?q=label%3Amulti-contexts).
+
+There is a script/patch to make the API take an explicit context pointer: [#5856](https://github.com/ocornut/imgui/pull/5856). It is presently unmaintained and likely to easy to update. It has been decided that the change is not currently worth applying to main-line but maybe will be in a future version.
+
+---
+
 # Q&A: Fonts, Text
 
 ### Q: How should I handle DPI in my application?
@@ -744,7 +780,7 @@ style.FontScaleDpi = 2.0f;
 
 To change font size:
 ```cpp
-ImGui::PushFont(NULL, 42.0f); // This will be multiplied by style.FontScaleDpi
+ImGui::PushFont(nullptr, 42.0f); // This will be multiplied by style.FontScaleDpi
 ```
 To change font and font size:
 ```cpp

docs/FONTS.md

@@ -77,6 +77,17 @@ Some solutions:
   You can use the `ImFontGlyphRangesBuilder` for this purpose and rebuilding your atlas between frames when new characters are needed. This will be the biggest win!
 - Set `io.Fonts.Flags |= ImFontAtlasFlags_NoPowerOfTwoHeight;` to disable rounding the texture height to the next power of two.
 
+### (5) Reduce texture resizes/copy on startup
+
+🆕 Since 1.92, the ImFontAtlas is initially created using a 512x128 texture, then grows as glyphs and fonts are used. Atlas growth leads to alloc+copy, and both the old and new sized textures are present in memory for a short time (typically one frame). If you use known fonts and want to reduce initial growth, you may set `TexMinWidth` and `TexMinHeight` during initializaton.
+
+```cpp
+ImFontAtlas* atlas = io.Fonts;
+atlas->TexMinWidth = 1024;
+atlas->TexMinHeight = 1024;
+atlas->AddFont(...);
+```
+
 ##### [Return to Index](#index)
 
 ---------------------------------------
@@ -85,7 +96,7 @@ Some solutions:
 
 v1.92 introduces a newer, dynamic font system. It requires backend to support the `ImGuiBackendFlags_HasTextures` feature:
 - Users of icons, Asian and non-English languages do not need to pre-build all glyphs ahead of time. Saving on loading time, memory, and also reducing issues with missing glyphs. Specifying glyph ranges is not needed anymore.
-- `PushFont(NULL, new_size)` may be used anytime to change font size.
+- `PushFont(nullptr, new_size)` may be used anytime to change font size.
 - Packing custom rectangles is more convenient as pixels may be written to immediately.
 - Any update to fonts previously required backend specific calls to re-upload the texture, and said calls were not portable across backends. It is now possible to scale fonts etc. in a way that doesn't require you to make backend-specific calls.
 - It is possible to plug a custom loader/backend to any font source.

docs/README.md

@@ -43,7 +43,7 @@ Dear ImGui is particularly suited to integration in game engines (for tooling),
 
 **Backends for a variety of graphics API and rendering platforms** are provided in the [backends/](https://github.com/ocornut/imgui/tree/master/backends) folder, along with example applications in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder. You may also create your own backend. Anywhere where you can render textured triangles, you can render Dear ImGui.
 
-C++20 users wishing to use a module may the use [stripe2933/imgui-module](https://github.com/stripe2933/imgui-module) third-party extension.
+C++20 users wishing to use a module may use the [stripe2933/imgui-module](https://github.com/stripe2933/imgui-module) third-party extension.
 
 See the [Getting Started & Integration](#getting-started--integration) section of this document for more details.
 
@@ -141,7 +141,7 @@ Integrating Dear ImGui within your custom engine is a matter of mainly 1) wiring
 - Generally, **make sure to spend time reading the [FAQ](https://www.dearimgui.com/faq), comments, and the examples applications!**
 
 Officially maintained backends (in repository):
-- Renderers: DirectX9, DirectX10, DirectX11, DirectX12, Metal, OpenGL/ES/ES2, SDL_GPU, SDL_Renderer2/3, Vulkan, WebGPU.
+- Renderers: DirectX9, DirectX10, DirectX11, DirectX12, Metal 3/4, OpenGL/ES/ES2, SDL_GPU, SDL_Renderer2/3, Vulkan, WebGPU.
 - Platforms: GLFW, SDL2/SDL3, Win32, Glut, OSX, Android.
 - Frameworks: Allegro5, Emscripten.
 

docs/SECURITY.md

@@ -0,0 +1,17 @@
+# Security Policy
+
+Dear ImGui is primarily designed for developer tools and technical applications running trusted code and trusted data. 
+
+Given that the library was not designed as a hardened security boundary against hostile or intentionally malformed inputs: 
+consider not using it in a context where a crash (through e.g. intentionally malformed inputs) could lead to privilege elevation. 
+E.g. running in a privileged process and interacting with non-privileged clients feeding code or data to Dear ImGui.
+
+Dear ImGui development efforts are focused on improving developer experience, usability, correctness, and robustness in real-world applications. 
+We will do our best to reduce e.g. crashes caused by common programmer mistakes.
+
+However, the project does not specifically focus on adversarial fuzzing scenarios, allocation-failure hardening, or highly artificial edge cases that are unlikely to occur in normal usage.
+
+## Reporting a Vulnerability
+
+Considering the above policy, most things may be reported in GitHub Issues.
+If you have a reason to disclose privately, please reach out to the contact address listed in README.

docs/TODO.txt

@@ -2,12 +2,14 @@ dear imgui
 ISSUES & TODO LIST
 
 Issue numbers (#) refer to GitHub issues listed at https://github.com/ocornut/imgui/issues/XXXX
+
 THIS LIST IS NOT WELL MAINTAINED. MOST OF THE WORK HAPPENS ON GITHUB NOWADAYS.
+
 The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
 It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
 
- - doc: add a proper documentation system (maybe relying on automation? #435)
  - doc: checklist app to verify backends/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc: add a proper documentation system (maybe relying on automation? #435)
  - doc/tips: tips of the day: website? applet in imgui_club?
 
  - window: preserve/restore relative focus ordering (persistent or not), and e.g. of multiple reappearing windows (#2304) -> also see docking reference to same #.
@@ -29,9 +31,9 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - window/clipping: some form of clipping when DisplaySize (or corresponding viewport) is zero.
  - window/tabbing: add a way to signify that a window or docked window requires attention (e.g. blinking title bar, trying to click behind a modal).
  - window/id_stack: add e.g. window->GetIDFromPath() with support for leading / and ../ (#1390, #331) -> model from test engine.
- ! scrolling: exposing horizontal scrolling with Shift+Wheel even when scrollbar is disabled expose lots of issues (#2424, #1463)
+
+ ! scrolling: exposing horizontal scrolling with Shift+Wheel even when scrollbar is disabled expose various issues (#2424, #1463)
  - scrolling: while holding down a scrollbar, try to keep the same contents visible (at least while not moving mouse)
- - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
  - scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
  - scrolling/style: shadows on scrollable areas to denote that there is more contents (see e.g. DaVinci Resolve ui)
 
@@ -51,38 +53,32 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
  - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
  - widgets: add always-allow-overlap mode. This should perhaps be the default? one problem is that highlight after mouse-wheel scrolling gets deferred, makes scrolling more flickery.
- - widgets: start exposing PushItemFlag() and ImGuiItemFlags
  - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
  - widgets: activate by identifier (trigger button, focus given id)
  - widgets: custom glyph/shapes replacements for stock shapes. (also #6090 #2431 #2235 #6517)
  - widgets: coloredit: keep reporting as active when picker is on?
- - widgets: group/scalarn functions: expose more per-component information. e.g. store NextItemData.ComponentIdx set by scalarn function, groups can expose them back somehow.
+ - widgets: group/ScalarN functions: expose more per-component information. e.g. store NextItemData.ComponentIdx set by scalarn function, groups can expose them back somehow.
  - selectable: using (size.x == 0.0f) and (SelectableTextAlign.x > 0.0f) followed by SameLine() is currently not supported.
  - selectable: generic BeginSelectable()/EndSelectable() mechanism. (work out alongside range-select branch)
  - selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
 
+ - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
  - input text: preserve scrolling when unfocused?
  - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- - input text: expose CursorPos in char filter event (#816)
- - input text: try usage idiom of using InputText with data only exposed through get/set accessors, without extraneous copy/alloc. (#3009)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return nullptr if not active (available in internals)
- - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
  - input text: hover tooltip could show unclamped text
  - input text: support for INSERT key to toggle overwrite mode. currently disabled because stb_textedit behavior is unsatisfactory on multi-line. (#2863)
  - input text: option to Tab after an Enter validation.
  - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
  - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
  - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
- - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
  - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
  - input text: decorrelate display layout from inputs with custom template - e.g. what's the easiest way to implement a nice IP/Mac address input editor?
- - input text: global callback system so user can plug in an expression evaluator easily. (#1691)
+ - input text: callback system (global) so user can plug in an expression evaluator easily. (#1691)
  - input text: force scroll to end or scroll to a given line/contents (so user can implement a log or a search feature)
  - input text: a way to preview completion (e.g. disabled text completing from the cursor)
  - input text: a side bar that could e.g. preview where errors are. probably left to the user to draw but we'd need to give them the info there.
  - input text: a way for the user to provide syntax coloring.
  - input text: Shift+TAB with ImGuiInputTextFlags_AllowTabInput could eat preceding blanks, up to tab_count.
- - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
  - input text multi-line: support for copy/cut without selection (copy/cut current line?)
  - input text multi-line: line numbers? status bar? (follow up on #200)
  - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
@@ -111,11 +107,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 !- color: the color conversion helpers/types are a mess and needs sorting out.
  - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
 
- - plot: full featured plot/graph api w/ scrolling, zooming etc. --> promote using ImPlot
- - (plot: deleted all other todo lines on 2023-06-28)
-
  - clipper: ability to disable the clipping through a simple flag/bool.
- - clipper: ability to run without knowing full count in advance.
  - clipper: horizontal clipping support. (#2580)
 
  - separator: expose flags (#759)
@@ -141,22 +133,19 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - knob: rotating knob widget (#942)
  - drag float: support for reversed drags (min > max) (removed is_locked, also see fdc526e)
  - drag float: up/down axis
- - drag float: power != 0.0f with current value being outside the range keeps the value stuck.
  - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
 
  - combo: a way/helper to customize the combo preview (#1658) -> experimental BeginComboPreview()
  - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: multiple selection (WIP range-select branch)
  - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (WIP range-select branch)
  - listbox: user may want to initial scroll to focus on the one selected value?
  - listbox: disable capturing mouse wheel if the listbox has no scrolling. (#1681)
  - listbox: scrolling should track modified selection.
  - listbox: future api should allow to enable horizontal scrolling (#2510)
 
 !- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - modals: make modal title bar blink when trying to click outside the modal
- - modals: technically speaking, we could make Begin() with ImGuiWindowFlags_Modal work without involving popup. May help untangle a few things, as modals are more like regular windows than popups.
+ - modals: make modal title bar blink when trying to click outside the modal.
+ - modals: technically speaking, we could make Begin() with ImGuiWindowFlags_Modal work without involving popup. May help untangle a few things, as modals are more like regular windows than popups. (#402)
  - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
  - popups: clicking outside (to close popup) and holding shouldn't drag window below.
  - popups: add variant using global identifier similar to Begin/End (#402)
@@ -198,7 +187,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - style: FramePadding could be different for up vs down (#584)
  - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
  - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
- - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
+ - style: gradients fill (#4722, #1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
  - style editor: color child window height expressed in multiple of line height.
 
  - log: improve logging of ArrowButton, ListBox, TabItem
@@ -214,7 +203,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
 
  - drag and drop: focus drag target window on hold (even without open)
- - drag and drop: releasing a drop shows the "..." tooltip for one frame - since e13e598 (#1725)
  - drag and drop: drag source on a group object (would need e.g. an invisible button covering group in EndGroup) https://twitter.com/paniq/status/1121446364909535233
  - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov. (see 2018/01/11 post in #143)
  - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
@@ -247,7 +235,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - font: make it easier to submit own bitmap font (same texture, another texture?). (#2127, #2575)
  - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
  - font: storing MinAdvanceX per font would allow us to skip calculating line width (under a threshold of character count) in loops looking for block width
- - font/demo: demonstrate use of ImFontGlyphRangesBuilder.
  - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
  - font/draw: need to be able to specify wrap start position.
  - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines). also see #3349.
@@ -273,12 +260,11 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - nav: NavFlattened: ESC on a flattened child should select something.
  - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
  - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: simulate right-click or context activation? (SHIFT+F10, keyboard Menu key?)
  - nav/popup: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys, default validation button, etc.
  - nav/treenode: left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
  - nav/menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
  - nav/menus: allow pressing Menu to leave a sub-menu.
- - nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB) or last focused window menu bar?
+ ! nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB) or last focused window menu bar?
  - nav/menus: when using the main menu bar, even though we restore focus after, the underlying window loses its title bar highlight during menu manipulation. could we prevent it?
  - nav/menus: main menu bar currently cannot restore a nullptr focus. Could save NavWindow at the time of being focused, similarly to what popup do?
  - nav/menus: Alt,Up could open the first menu (e.g. "File") currently it tends to nav into the window/collapse menu. Do do that we would need custom transition?
@@ -297,7 +283,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - misc: no way to run a root-most GetID() with ImGui:: api since there's always a Debug window in the stack. (mentioned in #2960)
  - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
  - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
- - misc: use more size_t in public api?
  - misc: support for string view/range instead of char* would e.g. facilitate usage with Rust (#683, #3038, WIP string_view branch)
 
  - demo: demonstrate using PushStyleVar() in more details.
@@ -315,8 +300,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - backends: opengl: could use a single vertex buffer and glBufferSubData for uploads?
  - backends: opengl: explicitly disable GL_STENCIL_TEST in bindings.
  - backends: vulkan: viewport: support for synchronized swapping of multiple swap chains.
- - backends: bgfx: https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
- - backends: emscripten: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
+ - backends: emscripten: dedicated backend? (#8178, #9120, eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 
  - bindings: ways to use clang ast dump to generate bindings or helpers for bindings? (e.g. clang++ -Xclang -ast-dump=json imgui.h) (--> use https://github.com/dearimgui/dear_bindings)
 

examples/example_allegro5/example_allegro5.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -92,6 +92,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -107,6 +108,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_android_opengl3/android/app/build.gradle

@@ -1,6 +1,5 @@
 plugins {
     alias(libs.plugins.android.application)
-    alias(libs.plugins.kotlin.android)
 }
 
 android {
@@ -25,9 +24,6 @@ android {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11
     }
-    kotlinOptions {
-        jvmTarget = '11'
-    }
     externalNativeBuild {
         cmake {
             path file('../../CMakeLists.txt')

examples/example_android_opengl3/android/gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
-agp = "8.12.0"
-kotlin = "2.0.21"
+agp = "9.2.0"
+kotlin = "2.3.21"
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }

examples/example_apple_metal4/Makefile

@@ -0,0 +1,21 @@
+# Makefile for example_apple_metal4, for macOS only (**not iOS**)
+CXX = clang++
+EXE = example_apple_metal4
+IMGUI_DIR = ../../
+SOURCES = main.mm
+SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
+SOURCES += $(IMGUI_DIR)/backends/imgui_impl_osx.mm $(IMGUI_DIR)/backends/imgui_impl_metal4.mm
+
+CXXFLAGS = -std=c++11 -ObjC++ -fobjc-arc -Wall -Wextra -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
+FRAMEWORKS = -framework AppKit -framework Metal -framework MetalKit -framework QuartzCore -framework GameController
+
+all: $(EXE)
+
+$(EXE): $(SOURCES)
+	$(CXX) $(CXXFLAGS) $^ $(FRAMEWORKS) -o $@
+
+run: all
+	./$(EXE)
+
+clean:
+	rm -f $(EXE) *.o

examples/example_apple_metal4/README.md

@@ -0,0 +1,10 @@
+# iOS / OSX Metal4 example
+
+## Introduction
+
+This example shows how to integrate Dear ImGui with Metal4. It is based on the "cross-platform" game template provided with Xcode as of Xcode 9.
+
+Consider basing your work off the example_glfw_metal/ or example_sdl2_metal/ examples. They are better supported and will be portable unlike this one.
+
+
+

examples/example_apple_metal4/example_apple_metal4.xcodeproj/project.pbxproj

@@ -0,0 +1,535 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 54;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		050450AB2768052600AB6805 /* imgui_tables.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5079822D257677DB0038A28D /* imgui_tables.cpp */; };
+		050450AD276863B000AB6805 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 050450AC276863B000AB6805 /* QuartzCore.framework */; };
+		05318E0F274C397200A8DE2E /* GameController.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 05318E0E274C397200A8DE2E /* GameController.framework */; };
+		05A275442773BEA20084EF39 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 05A275432773BEA20084EF39 /* QuartzCore.framework */; };
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+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+			};
+			name = Debug;
+		};
+		8307E7EF20E9F9C900473790 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				COPY_PHASE_STRIP = NO;
+				DEAD_CODE_STRIPPING = YES;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_USER_SCRIPT_SANDBOXING = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MTL_ENABLE_DEBUG_INFO = NO;
+			};
+			name = Release;
+		};
+		8307E7F120E9F9C900473790 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "iPhone Developer";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = "";
+				INFOPLIST_FILE = "$(SRCROOT)/iOS/Info-iOS.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-ios";
+				PRODUCT_NAME = example_apple_metal;
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+				USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
+			};
+			name = Debug;
+		};
+		8307E7F220E9F9C900473790 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "iPhone Developer";
+				CODE_SIGN_STYLE = Automatic;
+				DEVELOPMENT_TEAM = "";
+				INFOPLIST_FILE = "$(SRCROOT)/iOS/Info-iOS.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-ios";
+				PRODUCT_NAME = example_apple_metal;
+				SDKROOT = iphoneos;
+				TARGETED_DEVICE_FAMILY = "1,2";
+				USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
+				VALIDATE_PRODUCT = YES;
+			};
+			name = Release;
+		};
+		8307E7F420E9F9C900473790 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				DEAD_CODE_STRIPPING = YES;
+				DEVELOPMENT_TEAM = "";
+				INFOPLIST_FILE = "$(SRCROOT)/macOS/Info-macOS.plist";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = 26.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-macos";
+				PRODUCT_NAME = example_apple_metal;
+				SDKROOT = macosx;
+				USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
+			};
+			name = Debug;
+		};
+		8307E7F520E9F9C900473790 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_STYLE = Automatic;
+				COMBINE_HIDPI_IMAGES = YES;
+				DEAD_CODE_STRIPPING = YES;
+				DEVELOPMENT_TEAM = "";
+				INFOPLIST_FILE = "$(SRCROOT)/macOS/Info-macOS.plist";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/../Frameworks",
+				);
+				MACOSX_DEPLOYMENT_TARGET = 26.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-macos";
+				PRODUCT_NAME = example_apple_metal;
+				SDKROOT = macosx;
+				USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		8307E7B920E9F9C700473790 /* Build configuration list for PBXProject "example_apple_metal" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				8307E7EE20E9F9C900473790 /* Debug */,
+				8307E7EF20E9F9C900473790 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		8307E7F020E9F9C900473790 /* Build configuration list for PBXNativeTarget "example_apple_metal_ios" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				8307E7F120E9F9C900473790 /* Debug */,
+				8307E7F220E9F9C900473790 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		8307E7F320E9F9C900473790 /* Build configuration list for PBXNativeTarget "example_apple_metal_macos" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				8307E7F420E9F9C900473790 /* Debug */,
+				8307E7F520E9F9C900473790 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 8307E7B620E9F9C700473790 /* Project object */;
+}

examples/example_apple_metal4/iOS/Info-iOS.plist

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>imgui</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSRequiresIPhoneOS</key>
+	<true/>
+	<key>UILaunchStoryboardName</key>
+	<string>LaunchScreen</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>armv7</string>
+		<string>metal</string>
+	</array>
+	<key>UIRequiresFullScreen</key>
+	<true/>
+	<key>UIStatusBarHidden</key>
+	<true/>
+	<key>UISupportedInterfaceOrientations</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+	</array>
+	<key>UISupportedInterfaceOrientations~ipad</key>
+	<array>
+		<string>UIInterfaceOrientationPortrait</string>
+		<string>UIInterfaceOrientationPortraitUpsideDown</string>
+		<string>UIInterfaceOrientationLandscapeLeft</string>
+		<string>UIInterfaceOrientationLandscapeRight</string>
+	</array>
+</dict>
+</plist>

examples/example_apple_metal4/iOS/LaunchScreen.storyboard

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="17156" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+    <device id="retina6_1" orientation="portrait" appearance="light"/>
+    <dependencies>
+        <deployment identifier="iOS"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17125"/>
+        <capability name="Safe area layout guides" minToolsVersion="9.0"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <viewLayoutGuide key="safeArea" id="Bcu-3y-fUS"/>
+                        <color key="backgroundColor" red="0.27843137254901962" green="0.36078431372549019" blue="0.50196078431372548" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="53" y="375"/>
+        </scene>
+    </scenes>
+</document>

examples/example_apple_metal4/macOS/Info-macOS.plist

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>$(DEVELOPMENT_LANGUAGE)</string>
+	<key>CFBundleExecutable</key>
+	<string>$(EXECUTABLE_NAME)</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundleName</key>
+	<string>imgui</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleShortVersionString</key>
+	<string>1.0</string>
+	<key>CFBundleVersion</key>
+	<string>1</string>
+	<key>LSMinimumSystemVersion</key>
+	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
+	<key>NSMainStoryboardFile</key>
+	<string>MainMenu</string>
+	<key>NSPrincipalClass</key>
+	<string>NSApplication</string>
+</dict>
+</plist>

examples/example_apple_metal4/macOS/MainMenu.storyboard

@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="17156" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+    <dependencies>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="17156"/>
+    </dependencies>
+    <scenes>
+        <!--Application-->
+        <scene sceneID="JPo-4y-FX3">
+            <objects>
+                <application id="hnw-xV-0zn" sceneMemberID="viewController">
+                    <menu key="mainMenu" title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
+                        <items>
+                            <menuItem title="ImGui" id="1Xt-HY-uBw">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="ImGui" systemMenu="apple" id="uQy-DD-JDr">
+                                    <items>
+                                        <menuItem title="Services" id="NMo-om-nkz">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="4je-JR-u6R"/>
+                                        <menuItem title="Hide" keyEquivalent="h" id="Olw-nP-bQN">
+                                            <connections>
+                                                <action selector="hide:" target="Ady-hI-5gd" id="PnN-Uc-m68"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Hide Others" keyEquivalent="h" id="Vdr-fp-XzO">
+                                            <modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="hideOtherApplications:" target="Ady-hI-5gd" id="VT4-aY-XCT"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Show All" id="Kd2-mp-pUS">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="unhideAllApplications:" target="Ady-hI-5gd" id="Dhg-Le-xox"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem isSeparatorItem="YES" id="kCx-OE-vgT"/>
+                                        <menuItem title="Quit" keyEquivalent="q" id="4sb-4s-VLi">
+                                            <connections>
+                                                <action selector="terminate:" target="Ady-hI-5gd" id="Te7-pn-YzF"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="View" id="H8h-7b-M4v">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="View" id="HyV-fh-RgO">
+                                    <items>
+                                        <menuItem title="Enter Full Screen" keyEquivalent="f" id="4J7-dP-txa">
+                                            <modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
+                                            <connections>
+                                                <action selector="toggleFullScreen:" target="Ady-hI-5gd" id="dU3-MA-1Rq"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                            <menuItem title="Window" id="aUF-d1-5bR">
+                                <modifierMask key="keyEquivalentModifierMask"/>
+                                <menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
+                                    <items>
+                                        <menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
+                                            <connections>
+                                                <action selector="performMiniaturize:" target="Ady-hI-5gd" id="VwT-WD-YPe"/>
+                                            </connections>
+                                        </menuItem>
+                                        <menuItem title="Zoom" id="R4o-n2-Eq4">
+                                            <modifierMask key="keyEquivalentModifierMask"/>
+                                            <connections>
+                                                <action selector="performZoom:" target="Ady-hI-5gd" id="DIl-cC-cCs"/>
+                                            </connections>
+                                        </menuItem>
+                                    </items>
+                                </menu>
+                            </menuItem>
+                        </items>
+                    </menu>
+                    <connections>
+                        <outlet property="delegate" destination="Voe-Tx-rLC" id="PrD-fu-P6m"/>
+                    </connections>
+                </application>
+                <customObject id="Voe-Tx-rLC" customClass="AppDelegate"/>
+                <customObject id="YLy-65-1bz" customClass="NSFontManager"/>
+                <customObject id="Ady-hI-5gd" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
+            </objects>
+            <point key="canvasLocation" x="-362" y="-38"/>
+        </scene>
+    </scenes>
+</document>

examples/example_apple_metal4/main.mm

@@ -0,0 +1,366 @@
+// Dear ImGui: standalone example application for OSX + Metal.
+
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#import <Foundation/Foundation.h>
+
+#if TARGET_OS_OSX
+#import <Cocoa/Cocoa.h>
+#else
+#import <UIKit/UIKit.h>
+#endif
+
+#import <Metal/Metal.h>
+#import <MetalKit/MetalKit.h>
+
+#include "imgui.h"
+#include "imgui_impl_metal4.h"
+#if TARGET_OS_OSX
+#include "imgui_impl_osx.h"
+@interface AppViewController : NSViewController<NSWindowDelegate>
+@end
+#else
+@interface AppViewController : UIViewController
+@end
+#endif
+
+@interface AppViewController () <MTKViewDelegate>
+@property (nonatomic, readonly) MTKView *mtkView;
+@property (nonatomic, strong) id <MTLDevice> device;
+@property (nonatomic, strong) id <MTL4CommandQueue> commandQueue;
+@property (nonatomic, strong) id <MTL4CommandAllocator> commandAllocator;
+@end
+
+#define FRAMES_IN_FLIGHT 2
+
+//-----------------------------------------------------------------------------------
+// AppViewController
+//-----------------------------------------------------------------------------------
+
+@implementation AppViewController
+
+-(instancetype)initWithNibName:(nullable NSString *)nibNameOrNil bundle:(nullable NSBundle *)nibBundleOrNil
+{
+    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
+
+    _device = MTLCreateSystemDefaultDevice();
+    _commandQueue = [_device newMTL4CommandQueue];
+    _commandAllocator = [_device newCommandAllocator];
+
+    if (!self.device)
+    {
+        NSLog(@"Metal is not supported");
+        abort();
+    }
+
+    // Setup Dear ImGui context
+    // FIXME: This example doesn't have proper cleanup...
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsLight();
+
+    // When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones.
+
+    // Setup Renderer backend
+    ImGui_ImplMetal4_Init(_device, _commandQueue, FRAMES_IN_FLIGHT);
+
+    // Load Fonts
+    // - If fonts are not explicitly loaded, Dear ImGui will select an embedded font: either AddFontDefaultVector() or AddFontDefaultBitmap().
+    //   This selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold.
+    // - You can load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - If a file cannot be loaded, AddFont functions will return a nullptr. Please handle those errors in your code (e.g. use an assertion, display an error and quit).
+    // - Read 'docs/FONTS.md' for more instructions and details.
+    // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use FreeType for higher quality font rendering.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //style.FontSizeBase = 20.0f;
+    //io.Fonts->AddFontDefaultVector();
+    //io.Fonts->AddFontDefaultBitmap();
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf");
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf");
+    //IM_ASSERT(font != nullptr);
+
+    return self;
+}
+
+-(MTKView *)mtkView
+{
+    return (MTKView *)self.view;
+}
+
+-(void)loadView
+{
+    self.view = [[MTKView alloc] initWithFrame:CGRectMake(0, 0, 1200, 800)];
+}
+
+-(void)viewDidLoad
+{
+    [super viewDidLoad];
+
+    self.mtkView.device = self.device;
+    self.mtkView.delegate = self;
+
+#if TARGET_OS_OSX
+    ImGui_ImplOSX_Init(self.view);
+    [NSApp activateIgnoringOtherApps:YES];
+#endif
+}
+
+-(void)drawInMTKView:(MTKView*)view
+{
+    ImGuiIO& io = ImGui::GetIO();
+    io.DisplaySize.x = view.bounds.size.width;
+    io.DisplaySize.y = view.bounds.size.height;
+
+#if TARGET_OS_OSX
+    CGFloat framebufferScale = view.window.screen.backingScaleFactor ?: NSScreen.mainScreen.backingScaleFactor;
+#else
+    CGFloat framebufferScale = view.window.screen.scale ?: UIScreen.mainScreen.scale;
+#endif
+    io.DisplayFramebufferScale = ImVec2(framebufferScale, framebufferScale);
+    [self.commandAllocator reset];
+
+    id<MTL4CommandBuffer> commandBuffer = [self.device newCommandBuffer];
+    [commandBuffer beginCommandBufferWithAllocator:self.commandAllocator];
+
+    MTL4RenderPassDescriptor* renderPassDescriptor = view.currentMTL4RenderPassDescriptor;
+    if (renderPassDescriptor == nil)
+    {
+        [commandBuffer endCommandBuffer];
+        [self.commandQueue commit:&commandBuffer count:1];
+        return;
+    }
+
+    // Start the Dear ImGui frame
+    static int frameIndex = 0;
+    ImGui_ImplMetal4_NewFrame(renderPassDescriptor, frameIndex);
+    frameIndex++;
+    frameIndex = (frameIndex + 1) % FRAMES_IN_FLIGHT;
+    
+#if TARGET_OS_OSX
+    ImGui_ImplOSX_NewFrame(view);
+#endif
+    ImGui::NewFrame();
+
+    // Our state (make them static = more or less global) as a convenience to keep the example terse.
+    static bool show_demo_window = true;
+    static bool show_another_window = false;
+    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+    if (show_demo_window)
+        ImGui::ShowDemoWindow(&show_demo_window);
+
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+    {
+        static float f = 0.0f;
+        static int counter = 0;
+
+        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
+
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+        ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+            counter++;
+        ImGui::SameLine();
+        ImGui::Text("counter = %d", counter);
+
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+        ImGui::End();
+    }
+
+    // 3. Show another simple window.
+    if (show_another_window)
+    {
+        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+        ImGui::Text("Hello from another window!");
+        if (ImGui::Button("Close Me"))
+            show_another_window = false;
+        ImGui::End();
+    }
+
+    // Rendering
+    ImGui::Render();
+    ImDrawData* draw_data = ImGui::GetDrawData();
+
+    renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+    id <MTL4RenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
+    [renderEncoder pushDebugGroup:@"Dear ImGui rendering"];
+    ImGui_ImplMetal4_RenderDrawData(draw_data, commandBuffer, renderEncoder);
+    [renderEncoder popDebugGroup];
+    [renderEncoder endEncoding];
+
+    // Present
+    [commandBuffer endCommandBuffer];
+    [self.commandQueue waitForDrawable:view.currentDrawable];
+    [self.commandQueue commit:&commandBuffer count:1];
+    [self.commandQueue signalDrawable:view.currentDrawable];
+    [view.currentDrawable present];
+}
+
+-(void)mtkView:(MTKView*)view drawableSizeWillChange:(CGSize)size
+{
+}
+
+//-----------------------------------------------------------------------------------
+// Input processing
+//-----------------------------------------------------------------------------------
+
+#if TARGET_OS_OSX
+
+- (void)viewWillAppear
+{
+    [super viewWillAppear];
+    self.view.window.delegate = self;
+}
+
+- (void)windowWillClose:(NSNotification *)notification
+{
+    ImGui_ImplMetal4_Shutdown();
+    ImGui_ImplOSX_Shutdown();
+    ImGui::DestroyContext();
+}
+
+#else
+
+// This touch mapping is super cheesy/hacky. We treat any touch on the screen
+// as if it were a depressed left mouse button, and we don't bother handling
+// multitouch correctly at all. This causes the "cursor" to behave very erratically
+// when there are multiple active touches. But for demo purposes, single-touch
+// interaction actually works surprisingly well.
+-(void)updateIOWithTouchEvent:(UIEvent *)event
+{
+    UITouch *anyTouch = event.allTouches.anyObject;
+    CGPoint touchLocation = [anyTouch locationInView:self.view];
+    ImGuiIO &io = ImGui::GetIO();
+    io.AddMouseSourceEvent(ImGuiMouseSource_TouchScreen);
+    io.AddMousePosEvent(touchLocation.x, touchLocation.y);
+
+    BOOL hasActiveTouch = NO;
+    for (UITouch *touch in event.allTouches)
+    {
+        if (touch.phase != UITouchPhaseEnded && touch.phase != UITouchPhaseCancelled)
+        {
+            hasActiveTouch = YES;
+            break;
+        }
+    }
+    io.AddMouseButtonEvent(0, hasActiveTouch);
+}
+
+-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event      { [self updateIOWithTouchEvent:event]; }
+-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event      { [self updateIOWithTouchEvent:event]; }
+-(void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event  { [self updateIOWithTouchEvent:event]; }
+-(void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event      { [self updateIOWithTouchEvent:event]; }
+
+#endif
+
+@end
+
+//-----------------------------------------------------------------------------------
+// AppDelegate
+//-----------------------------------------------------------------------------------
+
+#if TARGET_OS_OSX
+
+@interface AppDelegate : NSObject <NSApplicationDelegate>
+@property (nonatomic, strong) NSWindow *window;
+@end
+
+@implementation AppDelegate
+
+-(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender
+{
+    return YES;
+}
+
+-(instancetype)init
+{
+    if (self = [super init])
+    {
+        NSViewController *rootViewController = [[AppViewController alloc] initWithNibName:nil bundle:nil];
+        self.window = [[NSWindow alloc] initWithContentRect:NSZeroRect
+                                                  styleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable | NSWindowStyleMaskMiniaturizable
+                                                    backing:NSBackingStoreBuffered
+                                                      defer:NO];
+        self.window.contentViewController = rootViewController;
+        [self.window center];
+        [self.window makeKeyAndOrderFront:self];
+    }
+    return self;
+}
+
+@end
+
+#else
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+@property (strong, nonatomic) UIWindow *window;
+@end
+
+@implementation AppDelegate
+
+-(BOOL)application:(UIApplication *)application
+    didFinishLaunchingWithOptions:(NSDictionary<UIApplicationLaunchOptionsKey,id> *)launchOptions
+{
+    UIViewController *rootViewController = [[AppViewController alloc] init];
+    self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
+    self.window.rootViewController = rootViewController;
+    [self.window makeKeyAndVisible];
+    return YES;
+}
+
+@end
+
+#endif
+
+//-----------------------------------------------------------------------------------
+// Application main() function
+//-----------------------------------------------------------------------------------
+
+#if TARGET_OS_OSX
+
+int main(int, const char**)
+{
+    @autoreleasepool
+    {
+        [NSApplication sharedApplication];
+        [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
+
+        AppDelegate *appDelegate = [[AppDelegate alloc] init];   // creates window
+        [NSApp setDelegate:appDelegate];
+
+        [NSApp activateIgnoringOtherApps:YES];
+        [NSApp run];
+    }
+    return 0;
+}
+
+#else
+
+int main(int argc, char * argv[])
+{
+    @autoreleasepool
+    {
+        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+    }
+}
+
+#endif

examples/example_apple_opengl2/main.mm

@@ -6,6 +6,7 @@
 // - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
 // - Introduction, links and more at the top of imgui.cpp
 
+#define GL_SILENCE_DEPRECATION
 #import <Cocoa/Cocoa.h>
 #import <OpenGL/gl.h>
 #import <OpenGL/glu.h>
@@ -32,7 +33,7 @@
 
 #ifndef DEBUG
     GLint swapInterval = 1;
-    [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
+    [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLContextParameterSwapInterval];
     if (swapInterval == 0)
         NSLog(@"Error: Cannot set swap interval.");
 #endif
@@ -130,8 +131,8 @@
     ImDrawData* draw_data = ImGui::GetDrawData();
 
     [[self openGLContext] makeCurrentContext];
-    GLsizei width  = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x);
-    GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y);
+    GLsizei width  = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
     glViewport(0, 0, width, height);
     glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
     glClear(GL_COLOR_BUFFER_BIT);

examples/example_apple_opengl3/Makefile

@@ -0,0 +1,21 @@
+# Makefile for example_apple_opengl3, for macOS only (**not iOS**)
+CXX = clang++
+EXE = example_apple_opengl3
+IMGUI_DIR = ../../
+SOURCES = main.mm
+SOURCES += $(IMGUI_DIR)/imgui.cpp $(IMGUI_DIR)/imgui_demo.cpp $(IMGUI_DIR)/imgui_draw.cpp $(IMGUI_DIR)/imgui_tables.cpp $(IMGUI_DIR)/imgui_widgets.cpp
+SOURCES += $(IMGUI_DIR)/backends/imgui_impl_osx.mm $(IMGUI_DIR)/backends/imgui_impl_opengl3.cpp
+
+CXXFLAGS = -std=c++11 -ObjC++ -fobjc-arc -Wall -Wextra -I$(IMGUI_DIR) -I$(IMGUI_DIR)/backends
+FRAMEWORKS = -framework Cocoa -framework OpenGL -framework GameController
+
+all: $(EXE)
+
+$(EXE): $(SOURCES)
+	$(CXX) $(CXXFLAGS) $(SOURCES) -o $(EXE) $(FRAMEWORKS)
+
+run: all
+	./$(EXE)
+
+clean:
+	rm -f $(EXE) *.o

examples/example_apple_opengl3/example_apple_opengl3.xcodeproj/project.pbxproj

@@ -0,0 +1,334 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 48;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		05E31B59274EF0700083FCB6 /* GameController.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 05E31B57274EF0360083FCB6 /* GameController.framework */; };
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+		4080A9AD20B0343C0036BA46 /* imgui_demo.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4080A9A620B0343C0036BA46 /* imgui_demo.cpp */; };
+		4080A9AE20B0343C0036BA46 /* imgui.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4080A9A720B0343C0036BA46 /* imgui.cpp */; };
+		4080A9AF20B0343C0036BA46 /* imgui_draw.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */; };
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+		4080A9B320B034E40036BA46 /* Cocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4080A9B220B034E40036BA46 /* Cocoa.framework */; };
+		4080A9B520B034EA0036BA46 /* OpenGL.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 4080A9B420B034EA0036BA46 /* OpenGL.framework */; };
+		50798230257677FD0038A28D /* imgui_tables.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5079822F257677FC0038A28D /* imgui_tables.cpp */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXCopyFilesBuildPhase section */
+		4080A96920B029B00036BA46 /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = /usr/share/man/man1/;
+			dstSubfolderSpec = 0;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 1;
+		};
+/* End PBXCopyFilesBuildPhase section */
+
+/* Begin PBXFileReference section */
+		05E31B57274EF0360083FCB6 /* GameController.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = GameController.framework; path = System/Library/Frameworks/GameController.framework; sourceTree = SDKROOT; };
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+		4080A9A320B034280036BA46 /* imgui_impl_opengl3_loader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_impl_opengl3_loader.h; path = ../../backends/imgui_impl_opengl3_loader.h; sourceTree = "<group>"; };
+		4080A9A520B0343C0036BA46 /* imgui_internal.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = imgui_internal.h; path = ../../imgui_internal.h; sourceTree = "<group>"; };
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+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		4080A96820B029B00036BA46 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				4080A9B520B034EA0036BA46 /* OpenGL.framework in Frameworks */,
+				4080A9B320B034E40036BA46 /* Cocoa.framework in Frameworks */,
+				05E31B59274EF0700083FCB6 /* GameController.framework in Frameworks */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		4080A96220B029B00036BA46 = {
+			isa = PBXGroup;
+			children = (
+				5079822F257677FC0038A28D /* imgui_tables.cpp */,
+				4080A9AC20B0343C0036BA46 /* imconfig.h */,
+				4080A9A720B0343C0036BA46 /* imgui.cpp */,
+				4080A9A820B0343C0036BA46 /* imgui.h */,
+				07A82EDA213941D00078D120 /* imgui_widgets.cpp */,
+				4080A9A620B0343C0036BA46 /* imgui_demo.cpp */,
+				4080A9AA20B0343C0036BA46 /* imgui_draw.cpp */,
+				4080A9A520B0343C0036BA46 /* imgui_internal.h */,
+				4080A99E20B034280036BA46 /* imgui_impl_opengl3.cpp */,
+				4080A9A020B034280036BA46 /* imgui_impl_opengl3.h */,
+				4080A9A320B034280036BA46 /* imgui_impl_opengl3_loader.h */,
+				4080A9A120B034280036BA46 /* imgui_impl_osx.h */,
+				4080A99F20B034280036BA46 /* imgui_impl_osx.mm */,
+				4080A98A20B02CD90036BA46 /* main.mm */,
+				4080A96C20B029B00036BA46 /* Products */,
+				4080A9B120B034E40036BA46 /* Frameworks */,
+			);
+			sourceTree = "<group>";
+		};
+		4080A96C20B029B00036BA46 /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				4080A96B20B029B00036BA46 /* example_osx_opengl3 */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		4080A9B120B034E40036BA46 /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				05E31B57274EF0360083FCB6 /* GameController.framework */,
+				4080A9B420B034EA0036BA46 /* OpenGL.framework */,
+				4080A9B220B034E40036BA46 /* Cocoa.framework */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXNativeTarget section */
+		4080A96A20B029B00036BA46 /* example_osx_opengl3 */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 4080A97220B029B00036BA46 /* Build configuration list for PBXNativeTarget "example_osx_opengl3" */;
+			buildPhases = (
+				4080A96720B029B00036BA46 /* Sources */,
+				4080A96820B029B00036BA46 /* Frameworks */,
+				4080A96920B029B00036BA46 /* CopyFiles */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = example_osx_opengl3;
+			productName = example_osx_opengl3;
+			productReference = 4080A96B20B029B00036BA46 /* example_osx_opengl3 */;
+			productType = "com.apple.product-type.tool";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		4080A96320B029B00036BA46 /* Project object */ = {
+			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 0930;
+				ORGANIZATIONNAME = ImGui;
+				TargetAttributes = {
+					4080A96A20B029B00036BA46 = {
+						CreatedOnToolsVersion = 9.3.1;
+						ProvisioningStyle = Automatic;
+					};
+				};
+			};
+			buildConfigurationList = 4080A96620B029B00036BA46 /* Build configuration list for PBXProject "example_apple_opengl3" */;
+			compatibilityVersion = "Xcode 8.0";
+			developmentRegion = en;
+			hasScannedForEncodings = 0;
+			knownRegions = (
+				en,
+			);
+			mainGroup = 4080A96220B029B00036BA46;
+			productRefGroup = 4080A96C20B029B00036BA46 /* Products */;
+			projectDirPath = "";
+			projectRoot = "";
+			targets = (
+				4080A96A20B029B00036BA46 /* example_osx_opengl3 */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXSourcesBuildPhase section */
+		4080A96720B029B00036BA46 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				4080A99820B02D340036BA46 /* main.mm in Sources */,
+				4080A9AD20B0343C0036BA46 /* imgui_demo.cpp in Sources */,
+				4080A9AF20B0343C0036BA46 /* imgui_draw.cpp in Sources */,
+				4080A9A220B034280036BA46 /* imgui_impl_opengl3.cpp in Sources */,
+				4080A9B020B0347A0036BA46 /* imgui_impl_osx.mm in Sources */,
+				4080A9AE20B0343C0036BA46 /* imgui.cpp in Sources */,
+				50798230257677FD0038A28D /* imgui_tables.cpp in Sources */,
+				07A82EDB213941D00078D120 /* imgui_widgets.cpp in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+		4080A97020B029B00036BA46 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = dwarf;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				ENABLE_TESTABILITY = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_DYNAMIC_NO_PIC = NO;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_PREPROCESSOR_DEFINITIONS = (
+					"DEBUG=1",
+					"$(inherited)",
+				);
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MTL_ENABLE_DEBUG_INFO = YES;
+				ONLY_ACTIVE_ARCH = YES;
+				SDKROOT = macosx;
+			};
+			name = Debug;
+		};
+		4080A97120B029B00036BA46 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ALWAYS_SEARCH_USER_PATHS = NO;
+				CLANG_ANALYZER_NONNULL = YES;
+				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_ENABLE_MODULES = YES;
+				CLANG_ENABLE_OBJC_ARC = YES;
+				CLANG_ENABLE_OBJC_WEAK = YES;
+				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
+				CLANG_WARN_CONSTANT_CONVERSION = YES;
+				CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES;
+				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
+				CLANG_WARN_EMPTY_BODY = YES;
+				CLANG_WARN_ENUM_CONVERSION = YES;
+				CLANG_WARN_INFINITE_RECURSION = YES;
+				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES;
+				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
+				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
+				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
+				CLANG_WARN_STRICT_PROTOTYPES = YES;
+				CLANG_WARN_SUSPICIOUS_MOVE = YES;
+				CLANG_WARN_UNGUARDED_AVAILABILITY = YES_AGGRESSIVE;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
+				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
+				CODE_SIGN_IDENTITY = "-";
+				COPY_PHASE_STRIP = NO;
+				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
+				ENABLE_NS_ASSERTIONS = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
+				GCC_C_LANGUAGE_STANDARD = gnu11;
+				GCC_NO_COMMON_BLOCKS = YES;
+				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
+				GCC_WARN_UNDECLARED_SELECTOR = YES;
+				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MTL_ENABLE_DEBUG_INFO = NO;
+				SDKROOT = macosx;
+			};
+			name = Release;
+		};
+		4080A97320B029B00036BA46 /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				USER_HEADER_SEARCH_PATHS = ../..;
+			};
+			name = Debug;
+		};
+		4080A97420B029B00036BA46 /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				CODE_SIGN_STYLE = Automatic;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				USER_HEADER_SEARCH_PATHS = ../..;
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		4080A96620B029B00036BA46 /* Build configuration list for PBXProject "example_apple_opengl3" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4080A97020B029B00036BA46 /* Debug */,
+				4080A97120B029B00036BA46 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		4080A97220B029B00036BA46 /* Build configuration list for PBXNativeTarget "example_osx_opengl3" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4080A97320B029B00036BA46 /* Debug */,
+				4080A97420B029B00036BA46 /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 4080A96320B029B00036BA46 /* Project object */;
+}

examples/example_apple_opengl3/main.mm

@@ -0,0 +1,260 @@
+// Dear ImGui: standalone example application for OSX + OpenGL3
+
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#define GL_SILENCE_DEPRECATION
+#import <Cocoa/Cocoa.h>
+#import <OpenGL/gl3.h>
+
+#include "imgui.h"
+#include "imgui_impl_opengl3.h"
+#include "imgui_impl_osx.h"
+
+//-----------------------------------------------------------------------------------
+// AppView
+//-----------------------------------------------------------------------------------
+
+@interface AppView : NSOpenGLView
+{
+    NSTimer*    animationTimer;
+}
+@end
+
+@implementation AppView
+
+-(void)prepareOpenGL
+{
+    [super prepareOpenGL];
+
+#ifndef DEBUG
+    GLint swapInterval = 1;
+    [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLContextParameterSwapInterval];
+    if (swapInterval == 0)
+        NSLog(@"Error: Cannot set swap interval.");
+#endif
+}
+
+-(void)initialize
+{
+    // Setup Dear ImGui context
+    // FIXME: This example doesn't have proper cleanup...
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsLight();
+
+    // Setup Platform/Renderer backends
+    [[self openGLContext] makeCurrentContext]; // ImGui_ImplOpenGL3_Init() requires a current GL context.
+    ImGui_ImplOSX_Init(self);
+    ImGui_ImplOpenGL3_Init();
+
+    // Load Fonts
+    // - If fonts are not explicitly loaded, Dear ImGui will select an embedded font: either AddFontDefaultVector() or AddFontDefaultBitmap().
+    //   This selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold.
+    // - You can load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - If a file cannot be loaded, AddFont functions will return a nullptr. Please handle those errors in your code (e.g. use an assertion, display an error and quit).
+    // - Read 'docs/FONTS.md' for more instructions and details.
+    // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use FreeType for higher quality font rendering.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //style.FontSizeBase = 20.0f;
+    //io.Fonts->AddFontDefaultVector();
+    //io.Fonts->AddFontDefaultBitmap();
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf");
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf");
+    //IM_ASSERT(font != nullptr);
+}
+
+-(void)updateAndDrawDemoView
+{
+    // Start the Dear ImGui frame
+    ImGuiIO& io = ImGui::GetIO();
+    ImGui_ImplOpenGL3_NewFrame();
+    ImGui_ImplOSX_NewFrame(self);
+    ImGui::NewFrame();
+
+    // Our state (make them static = more or less global) as a convenience to keep the example terse.
+    static bool show_demo_window = true;
+    static bool show_another_window = false;
+    static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+    if (show_demo_window)
+        ImGui::ShowDemoWindow(&show_demo_window);
+
+    // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+    {
+        static float f = 0.0f;
+        static int counter = 0;
+
+        ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+        ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+        ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+        ImGui::Checkbox("Another Window", &show_another_window);
+
+        ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+        ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+        if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+            counter++;
+        ImGui::SameLine();
+        ImGui::Text("counter = %d", counter);
+
+        ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+        ImGui::End();
+    }
+
+    // 3. Show another simple window.
+    if (show_another_window)
+    {
+        ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+        ImGui::Text("Hello from another window!");
+        if (ImGui::Button("Close Me"))
+            show_another_window = false;
+        ImGui::End();
+    }
+
+    // Rendering
+    ImGui::Render();
+    ImDrawData* draw_data = ImGui::GetDrawData();
+
+    [[self openGLContext] makeCurrentContext];
+    GLsizei width  = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x + 0.5f);
+    GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y + 0.5f);
+    glViewport(0, 0, width, height);
+    glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    ImGui_ImplOpenGL3_RenderDrawData(draw_data);
+
+    // Present
+    [[self openGLContext] flushBuffer];
+
+    if (!animationTimer)
+        animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.017 target:self selector:@selector(animationTimerFired:) userInfo:nil repeats:YES];
+}
+
+-(void)reshape                              { [super reshape]; [[self openGLContext] update]; [self updateAndDrawDemoView]; }
+-(void)drawRect:(NSRect)bounds              { [self updateAndDrawDemoView]; }
+-(void)animationTimerFired:(NSTimer*)timer  { [self setNeedsDisplay:YES]; }
+-(void)dealloc                              { animationTimer = nil; }
+
+@end
+
+//-----------------------------------------------------------------------------------
+// AppDelegate
+//-----------------------------------------------------------------------------------
+
+@interface AppDelegate : NSObject <NSApplicationDelegate>
+@property (nonatomic, readonly) NSWindow* window;
+@end
+
+@implementation AppDelegate
+@synthesize window = _window;
+
+-(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication
+{
+    return YES;
+}
+
+-(NSWindow*)window
+{
+    if (_window != nil)
+        return _window;
+
+    NSRect viewRect = NSMakeRect(100.0, 100.0, 100.0 + 1280.0, 100 + 800.0);
+
+    _window = [[NSWindow alloc] initWithContentRect:viewRect styleMask:NSWindowStyleMaskTitled|NSWindowStyleMaskMiniaturizable|NSWindowStyleMaskResizable|NSWindowStyleMaskClosable backing:NSBackingStoreBuffered defer:YES];
+    [_window setTitle:@"Dear ImGui OSX+OpenGL3 Example"];
+    [_window setAcceptsMouseMovedEvents:YES];
+    [_window setOpaque:YES];
+    [_window makeKeyAndOrderFront:NSApp];
+
+    return _window;
+}
+
+-(void)setupMenu
+{
+    NSMenu* mainMenuBar = [[NSMenu alloc] init];
+    NSMenu* appMenu;
+    NSMenuItem* menuItem;
+
+    appMenu = [[NSMenu alloc] initWithTitle:@"Dear ImGui OSX+OpenGL3 Example"];
+    menuItem = [appMenu addItemWithTitle:@"Quit Dear ImGui OSX+OpenGL3 Example" action:@selector(terminate:) keyEquivalent:@"q"];
+    [menuItem setKeyEquivalentModifierMask:NSEventModifierFlagCommand];
+
+    menuItem = [[NSMenuItem alloc] init];
+    [menuItem setSubmenu:appMenu];
+
+    [mainMenuBar addItem:menuItem];
+
+    appMenu = nil;
+    [NSApp setMainMenu:mainMenuBar];
+}
+
+-(void)dealloc
+{
+    _window = nil;
+}
+
+-(void)applicationDidFinishLaunching:(NSNotification *)aNotification
+{
+    // Make the application a foreground application (else it won't receive keyboard events)
+    ProcessSerialNumber psn = {0, kCurrentProcess};
+    TransformProcessType(&psn, kProcessTransformToForegroundApplication);
+
+    // Menu
+    [self setupMenu];
+
+    NSOpenGLPixelFormatAttribute attrs[] =
+    {
+        NSOpenGLPFAOpenGLProfile, NSOpenGLProfileVersion3_2Core,
+        NSOpenGLPFADoubleBuffer,
+        NSOpenGLPFADepthSize, 32,
+        0
+    };
+
+    NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];
+    AppView* view = [[AppView alloc] initWithFrame:self.window.frame pixelFormat:format];
+    format = nil;
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
+    if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6)
+        [view setWantsBestResolutionOpenGLSurface:YES];
+#endif // MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
+    [self.window setContentView:view];
+
+    if ([view openGLContext] == nil)
+        NSLog(@"No OpenGL Context!");
+
+    [view initialize];
+}
+
+@end
+
+//-----------------------------------------------------------------------------------
+// Application main() function
+//-----------------------------------------------------------------------------------
+
+int main(int argc, const char* argv[])
+{
+    @autoreleasepool
+    {
+        NSApp = [NSApplication sharedApplication];
+        AppDelegate* delegate = [[AppDelegate alloc] init];
+        [[NSApplication sharedApplication] setDelegate:delegate];
+        [NSApp run];
+    }
+    return NSApplicationMain(argc, argv);
+}

examples/example_glfw_opengl2/example_glfw_opengl2.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -92,6 +92,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -107,6 +108,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_glfw_opengl3/example_glfw_opengl3.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -92,6 +92,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -107,6 +108,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_glfw_opengl3/main.cpp

@@ -41,29 +41,26 @@ int main(int, char**)
     if (!glfwInit())
         return 1;
 
-    // Decide GL+GLSL versions
+    // Select GL version + let the backend select a GLSL version
+    const char* glsl_version = nullptr;
 #if defined(IMGUI_IMPL_OPENGL_ES2)
     // GL ES 2.0 + GLSL 100 (WebGL 1.0)
-    const char* glsl_version = "#version 100";
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
     glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
 #elif defined(IMGUI_IMPL_OPENGL_ES3)
     // GL ES 3.0 + GLSL 300 es (WebGL 2.0)
-    const char* glsl_version = "#version 300 es";
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
     glfwWindowHint(GLFW_CLIENT_API, GLFW_OPENGL_ES_API);
 #elif defined(__APPLE__)
-    // GL 3.2 + GLSL 150
-    const char* glsl_version = "#version 150";
+    // GL 3.2 + generally GLSL 150
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
     glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only
     glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);            // Required on Mac
 #else
-    // GL 3.0 + GLSL 130
-    const char* glsl_version = "#version 130";
+    // GL 3.0 + generally GLSL 130
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
     //glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);  // 3.2+ only

examples/example_glfw_vulkan/example_glfw_vulkan.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -93,6 +93,7 @@
       <AdditionalIncludeDirectories>..\..;..\..\backends;%VULKAN_SDK%\include;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -109,6 +110,7 @@
       <AdditionalIncludeDirectories>..\..;..\..\backends;%VULKAN_SDK%\include;..\libs\glfw\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_glfw_vulkan/main.cpp

@@ -193,7 +193,8 @@ static void SetupVulkan(ImVector<const char*> instance_extensions)
     {
         VkDescriptorPoolSize pool_sizes[] =
         {
-            { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE },
+            { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE },
+            { VK_DESCRIPTOR_TYPE_SAMPLER, IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE },
         };
         VkDescriptorPoolCreateInfo pool_info = {};
         pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;

examples/example_glfw_wgpu/CMakeLists.txt

@@ -1,10 +1,3 @@
-# Building for desktop with Dawn:
-#  1. git clone https://github.com/google/dawn dawn
-#  2. cmake -B build -DIMGUI_DAWN_DIR=dawn
-#  3. cmake --build build
-# The resulting binary will be found at one of the following locations:
-#   * build/example_glfw_wgpu[.exe] or build/Debug/example_glfw_wgpu[.exe]
-
 # Building for desktop with WGPU-Native:
 #  1. download WGPU-Native autogenerated binary modules for your platform/compiler from: https://github.com/gfx-rs/wgpu-native/releases
 #  2. unzip the downloaded file in your_preferred_folder
@@ -13,8 +6,15 @@
 # The resulting binary will be found at one of the following locations:
 #   * build/example_glfw_wgpu[.exe] or build/Debug/example_glfw_wgpu[.exe]
 
-# Building for desktop with WGVK (MUCH EASIER)
-#  1. git clone https://github.com/manuel5975p/WGVK dawn
+# Building for desktop with Dawn: (VERY LONG TO BUILD)
+#  1. git clone https://github.com/google/dawn dawn
+#  2. cmake -B build -DIMGUI_DAWN_DIR=dawn
+#  3. cmake --build build
+# The resulting binary will be found at one of the following locations:
+#   * build/example_glfw_wgpu[.exe] or build/Debug/example_glfw_wgpu[.exe]
+
+# Building for desktop with WGVK:
+#  1. git clone https://github.com/manuel5975p/WGVK wgvk
 #  2. cmake -B build -DIMGUI_WGVK_DIR=wgvk
 #  3. cmake --build build
 # The resulting binary will be found at one of the following locations:
@@ -29,7 +29,7 @@
 #  4. emrun build/index.html
 
 cmake_minimum_required(VERSION 3.22) # Dawn requires CMake >= 3.22
-project(imgui_example_glfw_wgpu C CXX)
+project(example_glfw_wgpu C CXX)
 
 set(IMGUI_EXECUTABLE example_glfw_wgpu)
 
@@ -37,7 +37,7 @@ if(NOT CMAKE_BUILD_TYPE)
     set(CMAKE_BUILD_TYPE Debug CACHE STRING "" FORCE)
 endif()
 
-set(CMAKE_CXX_STANDARD 17) # Dawn requires C++17
+set(CMAKE_CXX_STANDARD 20) # Dawn requires C++20
 
 # Dear ImGui
 set(IMGUI_DIR ../../)
@@ -146,6 +146,28 @@ else() # Native/Desktop build
     endif()
 
     if(IMGUI_WGVK_DIR)
+        find_package(Vulkan REQUIRED)
+        set(WGVK_PLATFORM_LIBS)
+        set(WGVK_PLATFORM_DEFS)
+        if(WIN32)
+            list(APPEND WGVK_PLATFORM_DEFS SUPPORT_WIN32_SURFACE=1)
+        elseif(APPLE)
+            list(APPEND WGVK_PLATFORM_DEFS SUPPORT_METAL_SURFACE=1)
+        elseif(UNIX)
+            find_package(PkgConfig QUIET)
+            pkg_check_modules(WAYLAND_CLIENT QUIET wayland-client)
+            if(WAYLAND_CLIENT_FOUND)
+                list(APPEND WGVK_PLATFORM_DEFS SUPPORT_WAYLAND_SURFACE=1)
+                list(APPEND WGVK_PLATFORM_LIBS ${WAYLAND_CLIENT_LIBRARIES})
+            endif()
+            find_package(X11 QUIET)
+            if(X11_FOUND)
+                list(APPEND WGVK_PLATFORM_DEFS SUPPORT_XLIB_SURFACE=1)
+                list(APPEND WGVK_PLATFORM_LIBS X11::X11)
+            endif()
+            list(APPEND WGVK_PLATFORM_LIBS m dl pthread)
+        endif()
+        set(LIBRARIES glfw Vulkan::Vulkan ${WGVK_PLATFORM_LIBS})
     endif()
 endif()
 
@@ -187,6 +209,7 @@ if(NOT EMSCRIPTEN) # WegGPU-Native settings
     if(IMGUI_WGVK_DIR)
         target_sources(${IMGUI_EXECUTABLE} PRIVATE ${IMGUI_WGVK_DIR}/src/wgvk.c)
         target_compile_definitions(${IMGUI_EXECUTABLE} PUBLIC "IMGUI_IMPL_WEBGPU_BACKEND_WGVK")
+        target_compile_definitions(${IMGUI_EXECUTABLE} PRIVATE ${WGVK_PLATFORM_DEFS})
         target_include_directories(${IMGUI_EXECUTABLE} PUBLIC ${IMGUI_WGVK_DIR}/include)
         if (MSVC)
            target_compile_options(${IMGUI_EXECUTABLE} PUBLIC /std:clatest /experimental:c11atomics)

examples/example_glfw_wgpu/main.cpp

@@ -344,29 +344,25 @@ static WGPUDevice RequestDevice(wgpu::Instance& instance, wgpu::Adapter& adapter
 static void handle_request_adapter(WGPURequestAdapterStatus status, WGPUAdapter adapter, WGPUStringView message, void* userdata1, void* userdata2)
 {
     IM_UNUSED(userdata2);
-    if (status == WGPURequestAdapterStatus_Success)
+    if (status != WGPURequestAdapterStatus_Success)
     {
-        WGPUAdapter* extAdapter = (WGPUAdapter*)userdata1;
-        *extAdapter = adapter;
-    }
-    else
-    {
-        printf("Request_adapter status=%#.8x message=%.*s\n", status, (int) message.length, message.data);
+        printf("Request_adapter status=%#.8x message=%.*s\n", status, (int)message.length, message.data);
+        return;
     }
+    WGPUAdapter* extAdapter = (WGPUAdapter*)userdata1;
+    *extAdapter = adapter;
 }
 
 static void handle_request_device(WGPURequestDeviceStatus status, WGPUDevice device, WGPUStringView message, void* userdata1, void* userdata2)
 {
     IM_UNUSED(userdata2);
-    if (status == WGPURequestDeviceStatus_Success)
+    if (status != WGPURequestDeviceStatus_Success)
     {
-        WGPUDevice* extDevice = (WGPUDevice*)userdata1;
-        *extDevice = device;
-    }
-    else
-    {
-        printf("Request_device status=%#.8x message=%.*s\n", status, (int) message.length, message.data);
+        printf("Request_device status=%#.8x message=%.*s\n", status, (int)message.length, message.data);
+        return;
     }
+    WGPUDevice* extDevice = (WGPUDevice*)userdata1;
+    *extDevice = device;
 }
 
 static WGPUAdapter RequestAdapter(WGPUInstance& instance)
@@ -380,8 +376,10 @@ static WGPUAdapter RequestAdapter(WGPUInstance& instance)
     adapterCallbackInfo.userdata1 = &local_adapter;
 
     WGPUFuture future = wgpuInstanceRequestAdapter(instance, &adapter_options, adapterCallbackInfo);
+#if !defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
     WGPUFutureWaitInfo waitInfo = { future, false };
     wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
+#endif
     IM_ASSERT(local_adapter && "Error on Adapter request");
     return local_adapter;
 }
@@ -393,15 +391,20 @@ static WGPUDevice RequestDevice(WGPUInstance& instance, WGPUAdapter& adapter)
     deviceCallbackInfo.mode = WGPUCallbackMode_WaitAnyOnly;
     deviceCallbackInfo.callback = handle_request_device;
     deviceCallbackInfo.userdata1 = &local_device;
+
     WGPUFuture future = wgpuAdapterRequestDevice(adapter, nullptr, deviceCallbackInfo);
+#if !defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
     WGPUFutureWaitInfo waitInfo = { future, false };
     wgpuInstanceWaitAny(instance, 1, &waitInfo, ~0ull);
+#else
+    IM_UNUSED(instance);
+#endif
     IM_ASSERT(local_device && "Error on Device request");
     return local_device;
 }
 #endif // IMGUI_IMPL_WEBGPU_BACKEND_WGPU
 
-bool InitWGPU(GLFWwindow* window)
+static bool InitWGPU(GLFWwindow* window)
 {
     WGPUTextureFormat preferred_fmt = WGPUTextureFormat_Undefined;  // acquired from SurfaceCapabilities
 
@@ -450,7 +453,7 @@ bool InitWGPU(GLFWwindow* window)
 
 #if defined(IMGUI_IMPL_WEBGPU_BACKEND_WGPU)
     wgpuSetLogCallback(
-        [](WGPULogLevel level, WGPUStringView msg, void* userdata) { fprintf(stderr, "%s: %.*s\n", ImGui_ImplWGPU_GetLogLevelName(level), (int)msg.length, msg.data); }, nullptr
+        [](WGPULogLevel level, WGPUStringView msg, void*) { fprintf(stderr, "%s: %.*s\n", ImGui_ImplWGPU_GetLogLevelName(level), (int)msg.length, msg.data); }, nullptr
     );
     wgpuSetLogLevel(WGPULogLevel_Warn);
 #endif
@@ -548,7 +551,7 @@ WGPUSurface CreateWGPUSurface(const WGPUInstance& instance, GLFWwindow* window)
     {
         create_info.System = "win32";
         create_info.RawWindow = (void*)glfwGetWin32Window(window);
-        create_info.RawInstance = (void*)::GetModuleHandle(NULL);
+        create_info.RawInstance = (void*)::GetModuleHandle(nullptr);
         return ImGui_ImplWGPU_CreateWGPUSurfaceHelper(&create_info);
     }
 #else

examples/example_glut_opengl2/example_glut_opengl2.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -92,6 +92,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(GLUT_INCLUDE_DIR);..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -107,6 +108,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>$(GLUT_INCLUDE_DIR);..\..;..\..\backends;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_null/example_null.vcxproj

@@ -21,33 +21,34 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{1A0BF63C-18EF-4BAE-A8DA-055481B11F5D}</ProjectGuid>
     <RootNamespace>example_win32_directx11</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -87,6 +88,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -101,6 +103,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%(AdditionalIncludeDirectories);</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_qnx_opengl3/Makefile

@@ -0,0 +1,2 @@
+LIST=OS
+include recurse.mk

examples/example_qnx_opengl3/README.md

@@ -0,0 +1,29 @@
+# Dear ImGui QNX Screen + OpenGL ES 3 example
+
+This example uses:
+
+- `imgui_impl_qnx.cpp` as the QNX Screen platform backend
+- `imgui_impl_opengl3.cpp` as the renderer backend
+- EGL to create an OpenGL ES 3 context and Screen window surface
+
+`imgui_impl_opengl3.cpp` supports desktop OpenGL and OpenGL ES. On QNX this
+example compiles it with `IMGUI_IMPL_OPENGL_ES3` and uses `#version 300 es`.
+No separate Screen/OpenGL renderer backend is required.
+
+## Build
+
+Load the QNX SDP environment, then run:
+
+```sh
+cd examples/example_qnx_opengl3
+make
+```
+
+The QNX recursive make files build for the CPUs enabled in your SDP
+configuration and install the program as `example_qnx_opengl3`.
+
+## Input
+
+The application polls its `screen_context_t` event queue and forwards every
+non-`SCREEN_EVENT_NONE` event to `ImGui_ImplQNX_ProcessEvent()`.
+Escape exits the example.

examples/example_qnx_opengl3/common.mk

@@ -0,0 +1,31 @@
+ifndef QCONFIG
+QCONFIG=qconfig.mk
+endif
+include $(QCONFIG)
+
+NAME=example_qnx_opengl3
+
+SRCS = \
+    main.cpp \
+    imgui.cpp \
+    imgui_demo.cpp \
+    imgui_draw.cpp \
+    imgui_tables.cpp \
+    imgui_widgets.cpp \
+    imgui_impl_qnx.cpp \
+    imgui_impl_opengl3.cpp
+
+EXTRA_SRCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+EXTRA_INCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+
+CXXFLAGS += -std=gnu++11 -DIMGUI_IMPL_OPENGL_ES3
+LIBS += EGL GLESv2 screen m
+
+INSTALLDIR=$(firstword $(INSTALLDIR_$(OS)) usr/bin)
+
+define PINFO
+PINFO DESCRIPTION=Dear ImGui QNX Screen and OpenGL ES 3 example
+endef
+
+include $(MKFILES_ROOT)/qmacros.mk
+include $(MKFILES_ROOT)/qtargets.mk

examples/example_qnx_opengl3/main.cpp

@@ -0,0 +1,307 @@
+// Dear ImGui: standalone example application for QNX Screen + OpenGL ES 3
+
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+#include "imgui.h"
+#include "imgui_impl_qnx.h"
+#include "imgui_impl_opengl3.h"
+#include <stdio.h>          // printf, fprintf
+#include <errno.h>
+#include <string.h>
+#include <sys/keycodes.h>
+#include <screen/screen.h>
+#include <EGL/egl.h>
+#include <GLES3/gl3.h>
+
+#ifndef EGL_OPENGL_ES3_BIT
+#ifdef EGL_OPENGL_ES3_BIT_KHR
+#define EGL_OPENGL_ES3_BIT EGL_OPENGL_ES3_BIT_KHR
+#else
+#define EGL_OPENGL_ES3_BIT 0x0040
+#endif
+#endif
+
+struct QNXWindow
+{
+    screen_context_t Context = nullptr;
+    screen_window_t Window = nullptr;
+    screen_event_t Event = nullptr;
+    EGLDisplay Display = EGL_NO_DISPLAY;
+    EGLContext GLContext = EGL_NO_CONTEXT;
+    EGLSurface GLSurface = EGL_NO_SURFACE;
+    int Size[2] = {};
+};
+
+// Forward declarations of helper functions
+bool CreateQNXWindow(QNXWindow* window);
+void DestroyQNXWindow(QNXWindow* window);
+bool ProcessQNXEvents(QNXWindow* window);
+
+// Main code
+int main(int, char**)
+{
+    // Setup QNX Screen and EGL
+    QNXWindow window;
+    if (!CreateQNXWindow(&window))
+    {
+        DestroyQNXWindow(&window);
+        return 1;
+    }
+
+    // GL ES 3.0 + GLSL 300 es
+    const char* glsl_version = "#version 300 es";
+    float main_scale = 1.0f;
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsLight();
+
+    // Setup scaling
+    ImGuiStyle& style = ImGui::GetStyle();
+    style.ScaleAllSizes(main_scale);        // Bake a fixed style scale. (until we have a solution for dynamic style scaling, changing this requires resetting Style + calling this again)
+    style.FontScaleDpi = main_scale;        // Set initial font scale. (in docking branch: using io.ConfigDpiScaleFonts=true automatically overrides this for every window depending on the current monitor)
+
+    // Setup Platform/Renderer backends
+    ImGui_ImplQNX_Init(window.Context, window.Window);
+    ImGui_ImplOpenGL3_Init(glsl_version);
+
+    // Load Fonts
+    // - If fonts are not explicitly loaded, Dear ImGui will select an embedded font: either AddFontDefaultVector() or AddFontDefaultBitmap().
+    //   This selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold.
+    // - You can load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - If a file cannot be loaded, AddFont functions will return a nullptr. Please handle those errors in your code (e.g. use an assertion, display an error and quit).
+    // - Read 'docs/FONTS.md' for more instructions and details.
+    // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use FreeType for higher quality font rendering.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //style.FontSizeBase = 20.0f;
+    //io.Fonts->AddFontDefaultVector();
+    //io.Fonts->AddFontDefaultBitmap();
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf");
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf");
+    //IM_ASSERT(font != nullptr);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (!ProcessQNXEvents(&window))
+            done = true;
+
+        // Start the Dear ImGui frame
+        ImGui_ImplOpenGL3_NewFrame();
+        ImGui_ImplQNX_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        glViewport(0, 0, (int)io.DisplaySize.x, (int)io.DisplaySize.y);
+        glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
+        glClear(GL_COLOR_BUFFER_BIT);
+        ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+        eglSwapBuffers(window.Display, window.GLSurface);
+    }
+
+    // Cleanup
+    ImGui_ImplOpenGL3_Shutdown();
+    ImGui_ImplQNX_Shutdown();
+    ImGui::DestroyContext();
+
+    DestroyQNXWindow(&window);
+
+    return 0;
+}
+
+// Helper functions
+
+bool CreateQNXWindow(QNXWindow* window)
+{
+    if (screen_create_context(&window->Context, 0) != 0 ||
+        screen_create_window(&window->Window, window->Context) != 0 ||
+        screen_create_event(&window->Event) != 0)
+    {
+        fprintf(stderr, "QNX Screen initialization failed: %s\n", strerror(errno));
+        return false;
+    }
+
+    // A newly created QNX Screen window reports the fullscreen dimensions.
+    if (screen_get_window_property_iv(window->Window, SCREEN_PROPERTY_SIZE, window->Size) != 0 || window->Size[0] <= 0 || window->Size[1] <= 0)
+    {
+        fprintf(stderr, "Failed to obtain QNX Screen window size: %s\n", strerror(errno));
+        return false;
+    }
+
+    const int usage = SCREEN_USAGE_OPENGL_ES2 | SCREEN_USAGE_OPENGL_ES3 | SCREEN_USAGE_NATIVE;
+    const int transparency = SCREEN_TRANSPARENCY_NONE;
+    const int swap_interval = 1;
+    if (screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_USAGE, &usage) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_SIZE, window->Size) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_TRANSPARENCY, &transparency) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_SWAP_INTERVAL, &swap_interval) != 0)
+    {
+        fprintf(stderr, "Failed to configure QNX Screen window: %s\n", strerror(errno));
+        return false;
+    }
+
+    window->Display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if (window->Display == EGL_NO_DISPLAY || eglInitialize(window->Display, nullptr, nullptr) != EGL_TRUE || eglBindAPI(EGL_OPENGL_ES_API) != EGL_TRUE)
+    {
+        fprintf(stderr, "EGL initialization failed: 0x%04x\n", eglGetError());
+        return false;
+    }
+
+    const EGLint config_attributes[] =
+    {
+        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT,
+        EGL_RED_SIZE, 8,
+        EGL_GREEN_SIZE, 8,
+        EGL_BLUE_SIZE, 8,
+        EGL_ALPHA_SIZE, 8,
+        EGL_DEPTH_SIZE, 24,
+        EGL_STENCIL_SIZE, 8,
+        EGL_NONE
+    };
+    EGLConfig config = nullptr;
+    EGLint config_count = 0;
+    if (eglChooseConfig(window->Display, config_attributes, &config, 1, &config_count) != EGL_TRUE || config_count == 0)
+    {
+        fprintf(stderr, "eglChooseConfig() failed: 0x%04x\n", eglGetError());
+        return false;
+    }
+
+    EGLint native_visual = 0;
+    if (eglGetConfigAttrib(window->Display, config, EGL_NATIVE_VISUAL_ID, &native_visual) != EGL_TRUE ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_FORMAT, &native_visual) != 0 ||
+        screen_create_window_buffers(window->Window, 2) != 0)
+    {
+        fprintf(stderr, "Failed to create QNX Screen buffers: %s\n", strerror(errno));
+        return false;
+    }
+
+    const EGLint context_attributes[] = { EGL_CONTEXT_CLIENT_VERSION, 3, EGL_NONE };
+    window->GLContext = eglCreateContext(window->Display, config, EGL_NO_CONTEXT, context_attributes);
+    window->GLSurface = eglCreateWindowSurface(window->Display, config, window->Window, nullptr);
+    if (window->GLContext == EGL_NO_CONTEXT || window->GLSurface == EGL_NO_SURFACE ||
+        eglMakeCurrent(window->Display, window->GLSurface, window->GLSurface, window->GLContext) != EGL_TRUE ||
+        eglSwapInterval(window->Display, 1) != EGL_TRUE)
+    {
+        fprintf(stderr, "EGL context creation failed: 0x%04x\n", eglGetError());
+        return false;
+    }
+
+    const int visible = 1;
+    if (screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_VISIBLE, &visible) != 0)
+    {
+        fprintf(stderr, "Failed to show QNX Screen window: %s\n", strerror(errno));
+        return false;
+    }
+    return true;
+}
+
+void DestroyQNXWindow(QNXWindow* window)
+{
+    if (window->Display != EGL_NO_DISPLAY)
+    {
+        eglMakeCurrent(window->Display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+        if (window->GLSurface != EGL_NO_SURFACE)
+            eglDestroySurface(window->Display, window->GLSurface);
+        if (window->GLContext != EGL_NO_CONTEXT)
+            eglDestroyContext(window->Display, window->GLContext);
+        eglTerminate(window->Display);
+    }
+    if (window->Event != nullptr)
+        screen_destroy_event(window->Event);
+    if (window->Window != nullptr)
+        screen_destroy_window(window->Window);
+    if (window->Context != nullptr)
+        screen_destroy_context(window->Context);
+}
+
+bool ProcessQNXEvents(QNXWindow* window)
+{
+    for (;;)
+    {
+        if (screen_get_event(window->Context, window->Event, 0) != 0)
+            return false;
+
+        int type = SCREEN_EVENT_NONE;
+        if (screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_TYPE, &type) != 0)
+            return false;
+        if (type == SCREEN_EVENT_NONE)
+            return true;
+
+        ImGui_ImplQNX_ProcessEvent(window->Event);
+        if (type == SCREEN_EVENT_CLOSE)
+            return false;
+        if (type == SCREEN_EVENT_KEYBOARD)
+        {
+            int flags = 0;
+            int key_cap = 0;
+            if (screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_FLAGS, &flags) == 0 &&
+                screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_KEY_CAP, &key_cap) == 0 &&
+                (flags & SCREEN_FLAG_KEY_DOWN) != 0 && key_cap == KEYCODE_ESCAPE)
+                return false;
+        }
+    }
+}
+

examples/example_qnx_opengl3/nto/Makefile

@@ -0,0 +1,8 @@
+LIST=CPU
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_opengl3/nto/aarch64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_opengl3/nto/aarch64/o.le/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

examples/example_qnx_opengl3/nto/x86_64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_opengl3/nto/x86_64/o/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

examples/example_qnx_vulkan/Makefile

@@ -0,0 +1,2 @@
+LIST=OS
+include recurse.mk

examples/example_qnx_vulkan/README.md

@@ -0,0 +1,29 @@
+# Dear ImGui QNX Screen + Vulkan example
+
+This example uses:
+
+- `imgui_impl_qnx.cpp` as the QNX Screen platform backend
+- the unmodified `imgui_impl_vulkan.cpp` renderer backend
+- `vkCreateScreenSurfaceQNX()` and `VK_QNX_screen_surface`
+
+No separate Screen/Vulkan renderer backend is required. The QNX-specific work
+is limited to the Screen platform backend, native window setup, and Vulkan WSI
+surface creation.
+
+## Build
+
+Load the QNX SDP environment, then run:
+
+```sh
+cd examples/example_qnx_vulkan
+make
+```
+
+The build defines `VK_USE_PLATFORM_SCREEN_QNX` and links `libvulkan` and
+`libscreen`.
+
+## Input and resize
+
+The application forwards Screen input events to `ImGui_ImplQNX_ProcessEvent()`.
+It recreates the Vulkan swapchain when the Screen window size changes or Vulkan
+reports `VK_ERROR_OUT_OF_DATE_KHR` / `VK_SUBOPTIMAL_KHR`. Escape exits.

examples/example_qnx_vulkan/common.mk

@@ -0,0 +1,31 @@
+ifndef QCONFIG
+QCONFIG=qconfig.mk
+endif
+include $(QCONFIG)
+
+NAME=example_qnx_vulkan
+
+SRCS = \
+    main.cpp \
+    imgui.cpp \
+    imgui_demo.cpp \
+    imgui_draw.cpp \
+    imgui_tables.cpp \
+    imgui_widgets.cpp \
+    imgui_impl_qnx.cpp \
+    imgui_impl_vulkan.cpp
+
+EXTRA_SRCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+EXTRA_INCVPATH += $(PROJECT_ROOT)/../.. $(PROJECT_ROOT)/../../backends
+
+CXXFLAGS += -std=gnu++11 -DVK_USE_PLATFORM_SCREEN_QNX=1
+LIBS += vulkan screen m
+
+INSTALLDIR=$(firstword $(INSTALLDIR_$(OS)) usr/bin)
+
+define PINFO
+PINFO DESCRIPTION=Dear ImGui QNX Screen and Vulkan example
+endef
+
+include $(MKFILES_ROOT)/qmacros.mk
+include $(MKFILES_ROOT)/qtargets.mk

examples/example_qnx_vulkan/main.cpp

@@ -0,0 +1,626 @@
+// Dear ImGui: standalone example application for QNX Screen + Vulkan
+
+// Learn about Dear ImGui:
+// - FAQ                  https://dearimgui.com/faq
+// - Getting Started      https://dearimgui.com/getting-started
+// - Documentation        https://dearimgui.com/docs (same as your local docs/ folder).
+// - Introduction, links and more at the top of imgui.cpp
+
+// Important note to the reader who wish to integrate imgui_impl_vulkan.cpp/.h in their own engine/app.
+// - Common ImGui_ImplVulkan_XXX functions and structures are used to interface with imgui_impl_vulkan.cpp/.h.
+//   You will use those if you want to use this rendering backend in your engine/app.
+// - Helper ImGui_ImplVulkanH_XXX functions and structures are only used by this example (main.cpp) and by
+//   the backend itself (imgui_impl_vulkan.cpp), but should PROBABLY NOT be used by your own engine/app code.
+// Read comments in imgui_impl_vulkan.h.
+
+#ifndef VK_USE_PLATFORM_SCREEN_QNX
+#define VK_USE_PLATFORM_SCREEN_QNX
+#endif
+#include "imgui.h"
+#include "imgui_impl_qnx.h"
+#include "imgui_impl_vulkan.h"
+#include <stdio.h>          // printf, fprintf
+#include <stdlib.h>         // abort
+#include <errno.h>
+#include <string.h>
+#include <sys/keycodes.h>
+#include <time.h>
+#include <screen/screen.h>
+
+// Volk headers
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+#define VOLK_IMPLEMENTATION
+#include <volk.h>
+#endif
+
+//#define APP_USE_UNLIMITED_FRAME_RATE
+#ifdef _DEBUG
+#define APP_USE_VULKAN_DEBUG_REPORT
+static VkDebugReportCallbackEXT g_DebugReport = VK_NULL_HANDLE;
+#endif
+
+// Data
+static VkAllocationCallbacks*   g_Allocator = nullptr;
+static VkInstance               g_Instance = VK_NULL_HANDLE;
+static VkPhysicalDevice         g_PhysicalDevice = VK_NULL_HANDLE;
+static VkDevice                 g_Device = VK_NULL_HANDLE;
+static uint32_t                 g_QueueFamily = (uint32_t)-1;
+static VkQueue                  g_Queue = VK_NULL_HANDLE;
+static VkPipelineCache          g_PipelineCache = VK_NULL_HANDLE;
+static VkDescriptorPool         g_DescriptorPool = VK_NULL_HANDLE;
+
+static ImGui_ImplVulkanH_Window g_MainWindowData;
+static uint32_t                 g_MinImageCount = 2;
+static bool                     g_SwapChainRebuild = false;
+
+static void check_vk_result(VkResult err)
+{
+    if (err == VK_SUCCESS)
+        return;
+    fprintf(stderr, "[vulkan] Error: VkResult = %d\n", err);
+    if (err < 0)
+        abort();
+}
+
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType, uint64_t object, size_t location, int32_t messageCode, const char* pLayerPrefix, const char* pMessage, void* pUserData)
+{
+    (void)flags; (void)object; (void)location; (void)messageCode; (void)pUserData; (void)pLayerPrefix; // Unused arguments
+    fprintf(stderr, "[vulkan] Debug report from ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
+    return VK_FALSE;
+}
+#endif // APP_USE_VULKAN_DEBUG_REPORT
+
+static bool IsExtensionAvailable(const ImVector<VkExtensionProperties>& properties, const char* extension)
+{
+    for (const VkExtensionProperties& p : properties)
+        if (strcmp(p.extensionName, extension) == 0)
+            return true;
+    return false;
+}
+
+static void SetupVulkan(ImVector<const char*> instance_extensions)
+{
+    VkResult err;
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+    volkInitialize();
+#endif
+
+    // Create Vulkan Instance
+    {
+        VkInstanceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+
+        // Enumerate available extensions
+        uint32_t properties_count;
+        ImVector<VkExtensionProperties> properties;
+        vkEnumerateInstanceExtensionProperties(nullptr, &properties_count, nullptr);
+        properties.resize(properties_count);
+        err = vkEnumerateInstanceExtensionProperties(nullptr, &properties_count, properties.Data);
+        check_vk_result(err);
+
+        // Enable required extensions
+        if (IsExtensionAvailable(properties, VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME))
+            instance_extensions.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
+#ifdef VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME
+        if (IsExtensionAvailable(properties, VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME))
+        {
+            instance_extensions.push_back(VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME);
+            create_info.flags |= VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR;
+        }
+#endif
+
+        // Enabling validation layers
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+        const char* layers[] = { "VK_LAYER_KHRONOS_validation" };
+        create_info.enabledLayerCount = 1;
+        create_info.ppEnabledLayerNames = layers;
+        instance_extensions.push_back("VK_EXT_debug_report");
+#endif
+
+        // Create Vulkan Instance
+        create_info.enabledExtensionCount = (uint32_t)instance_extensions.Size;
+        create_info.ppEnabledExtensionNames = instance_extensions.Data;
+        err = vkCreateInstance(&create_info, g_Allocator, &g_Instance);
+        check_vk_result(err);
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+        volkLoadInstance(g_Instance);
+#endif
+
+        // Setup the debug report callback
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+        auto f_vkCreateDebugReportCallbackEXT = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkCreateDebugReportCallbackEXT");
+        IM_ASSERT(f_vkCreateDebugReportCallbackEXT != nullptr);
+        VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
+        debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
+        debug_report_ci.flags = VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
+        debug_report_ci.pfnCallback = debug_report;
+        debug_report_ci.pUserData = nullptr;
+        err = f_vkCreateDebugReportCallbackEXT(g_Instance, &debug_report_ci, g_Allocator, &g_DebugReport);
+        check_vk_result(err);
+#endif
+    }
+
+    // Select Physical Device (GPU)
+    g_PhysicalDevice = ImGui_ImplVulkanH_SelectPhysicalDevice(g_Instance);
+    IM_ASSERT(g_PhysicalDevice != VK_NULL_HANDLE);
+
+    // Select graphics queue family
+    g_QueueFamily = ImGui_ImplVulkanH_SelectQueueFamilyIndex(g_PhysicalDevice);
+    IM_ASSERT(g_QueueFamily != (uint32_t)-1);
+
+    // Create Logical Device (with 1 queue)
+    {
+        ImVector<const char*> device_extensions;
+        device_extensions.push_back("VK_KHR_swapchain");
+
+        // Enumerate physical device extension
+        uint32_t properties_count;
+        ImVector<VkExtensionProperties> properties;
+        vkEnumerateDeviceExtensionProperties(g_PhysicalDevice, nullptr, &properties_count, nullptr);
+        properties.resize(properties_count);
+        vkEnumerateDeviceExtensionProperties(g_PhysicalDevice, nullptr, &properties_count, properties.Data);
+#ifdef VK_KHR_PORTABILITY_SUBSET_EXTENSION_NAME
+        if (IsExtensionAvailable(properties, VK_KHR_PORTABILITY_SUBSET_EXTENSION_NAME))
+            device_extensions.push_back(VK_KHR_PORTABILITY_SUBSET_EXTENSION_NAME);
+#endif
+
+        const float queue_priority[] = { 1.0f };
+        VkDeviceQueueCreateInfo queue_info[1] = {};
+        queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+        queue_info[0].queueFamilyIndex = g_QueueFamily;
+        queue_info[0].queueCount = 1;
+        queue_info[0].pQueuePriorities = queue_priority;
+        VkDeviceCreateInfo create_info = {};
+        create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+        create_info.queueCreateInfoCount = sizeof(queue_info) / sizeof(queue_info[0]);
+        create_info.pQueueCreateInfos = queue_info;
+        create_info.enabledExtensionCount = (uint32_t)device_extensions.Size;
+        create_info.ppEnabledExtensionNames = device_extensions.Data;
+        err = vkCreateDevice(g_PhysicalDevice, &create_info, g_Allocator, &g_Device);
+        check_vk_result(err);
+        vkGetDeviceQueue(g_Device, g_QueueFamily, 0, &g_Queue);
+    }
+
+    // Create Descriptor Pool
+    // If you wish to load e.g. additional textures you may need to alter pools sizes and maxSets.
+    {
+        VkDescriptorPoolSize pool_sizes[] =
+        {
+            { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE },
+            { VK_DESCRIPTOR_TYPE_SAMPLER, IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE },
+        };
+        VkDescriptorPoolCreateInfo pool_info = {};
+        pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+        pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+        pool_info.maxSets = 0;
+        for (VkDescriptorPoolSize& pool_size : pool_sizes)
+            pool_info.maxSets += pool_size.descriptorCount;
+        pool_info.poolSizeCount = (uint32_t)IM_COUNTOF(pool_sizes);
+        pool_info.pPoolSizes = pool_sizes;
+        err = vkCreateDescriptorPool(g_Device, &pool_info, g_Allocator, &g_DescriptorPool);
+        check_vk_result(err);
+    }
+}
+
+// All the ImGui_ImplVulkanH_XXX structures/functions are optional helpers used by the demo.
+// Your real engine/app may not use them.
+static void SetupVulkanWindow(ImGui_ImplVulkanH_Window* wd, VkSurfaceKHR surface, int width, int height)
+{
+    // Check for WSI support
+    VkBool32 res;
+    vkGetPhysicalDeviceSurfaceSupportKHR(g_PhysicalDevice, g_QueueFamily, surface, &res);
+    if (res != VK_TRUE)
+    {
+        fprintf(stderr, "Error no WSI support on physical device 0\n");
+        exit(-1);
+    }
+
+    // Select Surface Format
+    const VkFormat requestSurfaceImageFormat[] = { VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM, VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM };
+    const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
+    wd->Surface = surface;
+    wd->SurfaceFormat = ImGui_ImplVulkanH_SelectSurfaceFormat(g_PhysicalDevice, wd->Surface, requestSurfaceImageFormat, (size_t)IM_COUNTOF(requestSurfaceImageFormat), requestSurfaceColorSpace);
+
+    // Select Present Mode
+#ifdef APP_USE_UNLIMITED_FRAME_RATE
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR, VK_PRESENT_MODE_FIFO_KHR };
+#else
+    VkPresentModeKHR present_modes[] = { VK_PRESENT_MODE_FIFO_KHR };
+#endif
+    wd->PresentMode = ImGui_ImplVulkanH_SelectPresentMode(g_PhysicalDevice, wd->Surface, &present_modes[0], IM_COUNTOF(present_modes));
+    //printf("[vulkan] Selected PresentMode = %d\n", wd->PresentMode);
+
+    // Create SwapChain, RenderPass, Framebuffer, etc.
+    IM_ASSERT(g_MinImageCount >= 2);
+    ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, width, height, g_MinImageCount, 0);
+}
+
+static void CleanupVulkan()
+{
+    vkDestroyDescriptorPool(g_Device, g_DescriptorPool, g_Allocator);
+
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+    // Remove the debug report callback
+    auto f_vkDestroyDebugReportCallbackEXT = (PFN_vkDestroyDebugReportCallbackEXT)vkGetInstanceProcAddr(g_Instance, "vkDestroyDebugReportCallbackEXT");
+    f_vkDestroyDebugReportCallbackEXT(g_Instance, g_DebugReport, g_Allocator);
+#endif // APP_USE_VULKAN_DEBUG_REPORT
+
+    vkDestroyDevice(g_Device, g_Allocator);
+    vkDestroyInstance(g_Instance, g_Allocator);
+}
+
+static void CleanupVulkanWindow(ImGui_ImplVulkanH_Window* wd)
+{
+    ImGui_ImplVulkanH_DestroyWindow(g_Instance, g_Device, wd, g_Allocator);
+    vkDestroySurfaceKHR(g_Instance, wd->Surface, g_Allocator);
+}
+
+static void FrameRender(ImGui_ImplVulkanH_Window* wd, ImDrawData* draw_data)
+{
+    VkSemaphore image_acquired_semaphore  = wd->FrameSemaphores[wd->SemaphoreIndex].ImageAcquiredSemaphore;
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    VkResult err = vkAcquireNextImageKHR(g_Device, wd->Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE, &wd->FrameIndex);
+    if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR)
+        g_SwapChainRebuild = true;
+    if (err == VK_ERROR_OUT_OF_DATE_KHR)
+        return;
+    if (err != VK_SUBOPTIMAL_KHR)
+        check_vk_result(err);
+
+    ImGui_ImplVulkanH_Frame* fd = &wd->Frames[wd->FrameIndex];
+    {
+        err = vkWaitForFences(g_Device, 1, &fd->Fence, VK_TRUE, UINT64_MAX);    // wait indefinitely instead of periodically checking
+        check_vk_result(err);
+
+        err = vkResetFences(g_Device, 1, &fd->Fence);
+        check_vk_result(err);
+    }
+    {
+        err = vkResetCommandPool(g_Device, fd->CommandPool, 0);
+        check_vk_result(err);
+        VkCommandBufferBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+        info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+        err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
+        check_vk_result(err);
+    }
+    {
+        VkRenderPassBeginInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+        info.renderPass = wd->RenderPass;
+        info.framebuffer = fd->Framebuffer;
+        info.renderArea.extent.width = wd->Width;
+        info.renderArea.extent.height = wd->Height;
+        info.clearValueCount = 1;
+        info.pClearValues = &wd->ClearValue;
+        vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
+    }
+
+    // Record dear imgui primitives into command buffer
+    ImGui_ImplVulkan_RenderDrawData(draw_data, fd->CommandBuffer);
+
+    // Submit command buffer
+    vkCmdEndRenderPass(fd->CommandBuffer);
+    {
+        VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+        VkSubmitInfo info = {};
+        info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+        info.waitSemaphoreCount = 1;
+        info.pWaitSemaphores = &image_acquired_semaphore;
+        info.pWaitDstStageMask = &wait_stage;
+        info.commandBufferCount = 1;
+        info.pCommandBuffers = &fd->CommandBuffer;
+        info.signalSemaphoreCount = 1;
+        info.pSignalSemaphores = &render_complete_semaphore;
+
+        err = vkEndCommandBuffer(fd->CommandBuffer);
+        check_vk_result(err);
+        err = vkQueueSubmit(g_Queue, 1, &info, fd->Fence);
+        check_vk_result(err);
+    }
+}
+
+static void FramePresent(ImGui_ImplVulkanH_Window* wd)
+{
+    if (g_SwapChainRebuild)
+        return;
+    VkSemaphore render_complete_semaphore = wd->FrameSemaphores[wd->SemaphoreIndex].RenderCompleteSemaphore;
+    VkPresentInfoKHR info = {};
+    info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+    info.waitSemaphoreCount = 1;
+    info.pWaitSemaphores = &render_complete_semaphore;
+    info.swapchainCount = 1;
+    info.pSwapchains = &wd->Swapchain;
+    info.pImageIndices = &wd->FrameIndex;
+    VkResult err = vkQueuePresentKHR(g_Queue, &info);
+    if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR)
+        g_SwapChainRebuild = true;
+    if (err == VK_ERROR_OUT_OF_DATE_KHR)
+        return;
+    if (err != VK_SUBOPTIMAL_KHR)
+        check_vk_result(err);
+    wd->SemaphoreIndex = (wd->SemaphoreIndex + 1) % wd->SemaphoreCount; // Now we can use the next set of semaphores
+}
+
+
+struct QNXWindow
+{
+    screen_context_t Context = nullptr;
+    screen_window_t Window = nullptr;
+    screen_event_t Event = nullptr;
+    int Size[2] = {};
+};
+
+static bool CreateQNXWindow(QNXWindow* window)
+{
+    if (screen_create_context(&window->Context, 0) != 0 ||
+        screen_create_window(&window->Window, window->Context) != 0 ||
+        screen_create_event(&window->Event) != 0)
+    {
+        fprintf(stderr, "QNX Screen initialization failed: %s\n", strerror(errno));
+        return false;
+    }
+
+    // A newly created QNX Screen window reports the fullscreen dimensions.
+    if (screen_get_window_property_iv(window->Window, SCREEN_PROPERTY_SIZE, window->Size) != 0 || window->Size[0] <= 0 || window->Size[1] <= 0)
+    {
+        fprintf(stderr, "Failed to obtain QNX Screen window size: %s\n", strerror(errno));
+        return false;
+    }
+
+    const int usage = SCREEN_USAGE_VULKAN | SCREEN_USAGE_NATIVE;
+    const int transparency = SCREEN_TRANSPARENCY_NONE;
+    if (screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_USAGE, &usage) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_SIZE, window->Size) != 0 ||
+        screen_set_window_property_iv(window->Window, SCREEN_PROPERTY_TRANSPARENCY, &transparency) != 0)
+    {
+        fprintf(stderr, "Failed to configure QNX Screen window: %s\n", strerror(errno));
+        return false;
+    }
+    return true;
+}
+
+static void DestroyQNXWindow(QNXWindow* window)
+{
+    if (window->Event != nullptr)
+        screen_destroy_event(window->Event);
+    if (window->Window != nullptr)
+        screen_destroy_window(window->Window);
+    if (window->Context != nullptr)
+        screen_destroy_context(window->Context);
+}
+
+static bool ProcessQNXEvents(QNXWindow* window)
+{
+    for (;;)
+    {
+        if (screen_get_event(window->Context, window->Event, 0) != 0)
+            return false;
+
+        int type = SCREEN_EVENT_NONE;
+        if (screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_TYPE, &type) != 0)
+            return false;
+        if (type == SCREEN_EVENT_NONE)
+            return true;
+
+        ImGui_ImplQNX_ProcessEvent(window->Event);
+        if (type == SCREEN_EVENT_CLOSE)
+            return false;
+        if (type == SCREEN_EVENT_KEYBOARD)
+        {
+            int flags = 0;
+            int key_cap = 0;
+            if (screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_FLAGS, &flags) == 0 &&
+                screen_get_event_property_iv(window->Event, SCREEN_PROPERTY_KEY_CAP, &key_cap) == 0 &&
+                (flags & SCREEN_FLAG_KEY_DOWN) != 0 && key_cap == KEYCODE_ESCAPE)
+                return false;
+        }
+    }
+}
+
+static void QNXSleep(int milliseconds)
+{
+    struct timespec request = { milliseconds / 1000, (milliseconds % 1000) * 1000000L };
+    nanosleep(&request, nullptr);
+}
+
+// Main code
+int main(int, char**)
+{
+    // Create window with Vulkan graphics context
+    QNXWindow window;
+    if (!CreateQNXWindow(&window))
+    {
+        DestroyQNXWindow(&window);
+        return 1;
+    }
+    float main_scale = 1.0f;
+
+    ImVector<const char*> extensions;
+    extensions.push_back(VK_KHR_SURFACE_EXTENSION_NAME);
+    extensions.push_back(VK_QNX_SCREEN_SURFACE_EXTENSION_NAME);
+    SetupVulkan(extensions);
+
+    // Create Window Surface
+    VkScreenSurfaceCreateInfoQNX surface_create_info = {};
+    surface_create_info.sType = VK_STRUCTURE_TYPE_SCREEN_SURFACE_CREATE_INFO_QNX;
+    surface_create_info.context = window.Context;
+    surface_create_info.window = window.Window;
+    VkSurfaceKHR surface;
+    VkResult err = vkCreateScreenSurfaceQNX(g_Instance, &surface_create_info, g_Allocator, &surface);
+    check_vk_result(err);
+
+    // Create Framebuffers
+    int w = window.Size[0];
+    int h = window.Size[1];
+    ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
+    SetupVulkanWindow(wd, surface, w, h);
+
+    const int visible = 1;
+    if (screen_set_window_property_iv(window.Window, SCREEN_PROPERTY_VISIBLE, &visible) != 0)
+    {
+        fprintf(stderr, "Failed to show QNX Screen window: %s\n", strerror(errno));
+        return 1;
+    }
+
+    // Setup Dear ImGui context
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+    ImGuiIO& io = ImGui::GetIO(); (void)io;
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+
+    // Setup Dear ImGui style
+    ImGui::StyleColorsDark();
+    //ImGui::StyleColorsLight();
+
+    // Setup scaling
+    ImGuiStyle& style = ImGui::GetStyle();
+    style.ScaleAllSizes(main_scale);        // Bake a fixed style scale. (until we have a solution for dynamic style scaling, changing this requires resetting Style + calling this again)
+    style.FontScaleDpi = main_scale;        // Set initial font scale. (in docking branch: using io.ConfigDpiScaleFonts=true automatically overrides this for every window depending on the current monitor)
+
+    // Setup Platform/Renderer backends
+    ImGui_ImplQNX_Init(window.Context, window.Window);
+    ImGui_ImplVulkan_InitInfo init_info = {};
+    //init_info.ApiVersion = VK_API_VERSION_1_3;              // Pass in your value of VkApplicationInfo::apiVersion, otherwise will default to header version.
+    init_info.Instance = g_Instance;
+    init_info.PhysicalDevice = g_PhysicalDevice;
+    init_info.Device = g_Device;
+    init_info.QueueFamily = g_QueueFamily;
+    init_info.Queue = g_Queue;
+    init_info.PipelineCache = g_PipelineCache;
+    init_info.DescriptorPool = g_DescriptorPool;
+    init_info.MinImageCount = g_MinImageCount;
+    init_info.ImageCount = wd->ImageCount;
+    init_info.Allocator = g_Allocator;
+    init_info.PipelineInfoMain.RenderPass = wd->RenderPass;
+    init_info.PipelineInfoMain.Subpass = 0;
+    init_info.PipelineInfoMain.MSAASamples = VK_SAMPLE_COUNT_1_BIT;
+    init_info.CheckVkResultFn = check_vk_result;
+    ImGui_ImplVulkan_Init(&init_info);
+
+    // Load Fonts
+    // - If fonts are not explicitly loaded, Dear ImGui will select an embedded font: either AddFontDefaultVector() or AddFontDefaultBitmap().
+    //   This selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold.
+    // - You can load multiple fonts and use ImGui::PushFont()/PopFont() to select them.
+    // - If a file cannot be loaded, AddFont functions will return a nullptr. Please handle those errors in your code (e.g. use an assertion, display an error and quit).
+    // - Read 'docs/FONTS.md' for more instructions and details.
+    // - Use '#define IMGUI_ENABLE_FREETYPE' in your imconfig file to use FreeType for higher quality font rendering.
+    // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ !
+    //style.FontSizeBase = 20.0f;
+    //io.Fonts->AddFontDefaultVector();
+    //io.Fonts->AddFontDefaultBitmap();
+    //io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\segoeui.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf");
+    //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf");
+    //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf");
+    //IM_ASSERT(font != nullptr);
+
+    // Our state
+    bool show_demo_window = true;
+    bool show_another_window = false;
+    ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
+
+    // Main loop
+    bool done = false;
+    while (!done)
+    {
+        // Poll and handle events (inputs, window resize, etc.)
+        // You can read the io.WantCaptureMouse, io.WantCaptureKeyboard flags to tell if dear imgui wants to use your inputs.
+        // - When io.WantCaptureMouse is true, do not dispatch mouse input data to your main application, or clear/overwrite your copy of the mouse data.
+        // - When io.WantCaptureKeyboard is true, do not dispatch keyboard input data to your main application, or clear/overwrite your copy of the keyboard data.
+        // Generally you may always pass all inputs to dear imgui, and hide them from your application based on those two flags.
+        if (!ProcessQNXEvents(&window))
+            done = true;
+
+        // Resize swap chain?
+        int framebuffer_size[2] = {};
+        if (screen_get_window_property_iv(window.Window, SCREEN_PROPERTY_SIZE, framebuffer_size) != 0)
+            done = true;
+        int fb_width = framebuffer_size[0];
+        int fb_height = framebuffer_size[1];
+        if (fb_width <= 0 || fb_height <= 0)
+        {
+            QNXSleep(10);
+            continue;
+        }
+        if (fb_width > 0 && fb_height > 0 && (g_SwapChainRebuild || g_MainWindowData.Width != fb_width || g_MainWindowData.Height != fb_height))
+        {
+            ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);
+            ImGui_ImplVulkanH_CreateOrResizeWindow(g_Instance, g_PhysicalDevice, g_Device, wd, g_QueueFamily, g_Allocator, fb_width, fb_height, g_MinImageCount, 0);
+            g_MainWindowData.FrameIndex = 0;
+            g_SwapChainRebuild = false;
+        }
+
+        // Start the Dear ImGui frame
+        ImGui_ImplVulkan_NewFrame();
+        ImGui_ImplQNX_NewFrame();
+        ImGui::NewFrame();
+
+        // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!).
+        if (show_demo_window)
+            ImGui::ShowDemoWindow(&show_demo_window);
+
+        // 2. Show a simple window that we create ourselves. We use a Begin/End pair to create a named window.
+        {
+            static float f = 0.0f;
+            static int counter = 0;
+
+            ImGui::Begin("Hello, world!");                          // Create a window called "Hello, world!" and append into it.
+
+            ImGui::Text("This is some useful text.");               // Display some text (you can use a format strings too)
+            ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our window open/close state
+            ImGui::Checkbox("Another Window", &show_another_window);
+
+            ImGui::SliderFloat("float", &f, 0.0f, 1.0f);            // Edit 1 float using a slider from 0.0f to 1.0f
+            ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color
+
+            if (ImGui::Button("Button"))                            // Buttons return true when clicked (most widgets return true when edited/activated)
+                counter++;
+            ImGui::SameLine();
+            ImGui::Text("counter = %d", counter);
+
+            ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+            ImGui::End();
+        }
+
+        // 3. Show another simple window.
+        if (show_another_window)
+        {
+            ImGui::Begin("Another Window", &show_another_window);   // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked)
+            ImGui::Text("Hello from another window!");
+            if (ImGui::Button("Close Me"))
+                show_another_window = false;
+            ImGui::End();
+        }
+
+        // Rendering
+        ImGui::Render();
+        ImDrawData* draw_data = ImGui::GetDrawData();
+        const bool is_minimized = (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f);
+        if (!is_minimized)
+        {
+            wd->ClearValue.color.float32[0] = clear_color.x * clear_color.w;
+            wd->ClearValue.color.float32[1] = clear_color.y * clear_color.w;
+            wd->ClearValue.color.float32[2] = clear_color.z * clear_color.w;
+            wd->ClearValue.color.float32[3] = clear_color.w;
+            FrameRender(wd, draw_data);
+            FramePresent(wd);
+        }
+    }
+
+    // Cleanup
+    err = vkDeviceWaitIdle(g_Device);
+    check_vk_result(err);
+    ImGui_ImplVulkan_Shutdown();
+    ImGui_ImplQNX_Shutdown();
+    ImGui::DestroyContext();
+
+    CleanupVulkanWindow(&g_MainWindowData);
+    CleanupVulkan();
+
+    DestroyQNXWindow(&window);
+
+    return 0;
+}

examples/example_qnx_vulkan/nto/Makefile

@@ -0,0 +1,8 @@
+LIST=CPU
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_vulkan/nto/aarch64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_vulkan/nto/aarch64/o.le/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

examples/example_qnx_vulkan/nto/x86_64/Makefile

@@ -0,0 +1,8 @@
+LIST=VARIANT
+ifndef QRECURSE
+QRECURSE=recurse.mk
+ifdef QCONFIG
+QRDIR=$(dir $(QCONFIG))
+endif
+endif
+include $(QRDIR)$(QRECURSE)

examples/example_qnx_vulkan/nto/x86_64/o/Makefile

@@ -0,0 +1 @@
+include ../../../common.mk

examples/example_sdl2_directx11/example_sdl2_directx11.vcxproj

@@ -29,27 +29,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -93,6 +93,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -108,6 +109,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_sdl2_metal/main.mm

@@ -10,25 +10,76 @@
 #include "imgui.h"
 #include "imgui_impl_sdl2.h"
 #include "imgui_impl_metal.h"
-#include <stdio.h>
+#include <stdio.h>          // printf, fprintf
 #include <SDL.h>
 
 #import <Metal/Metal.h>
 #import <QuartzCore/QuartzCore.h>
 
+// Main code
 int main(int, char**)
 {
+    // Setup SDL
+    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
+    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
+    {
+        printf("Error: SDL_Init(): %s\n", SDL_GetError());
+        return 1;
+    }
+
+    // From 2.0.18: Enable native IME.
+#ifdef SDL_HINT_IME_SHOW_UI
+    SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
+#endif
+
+    // Create SDL window graphics context
+    float main_scale = ImGui_ImplSDL2_GetContentScaleForDisplay(0);
+    int window_flags = SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI;
+    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL2+Metal example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, (int)(1280 * main_scale), (int)(800 * main_scale), window_flags);
+    if (window == nullptr)
+    {
+        printf("Error: SDL_CreateWindow(): %s\n", SDL_GetError());
+        return 1;
+    }
+
+    // Create Metal device _before_ creating the view/layer
+    id<MTLDevice> metalDevice = MTLCreateSystemDefaultDevice();
+    if (!metalDevice)
+    {
+        printf("Error: failed to create Metal device.\n");
+        SDL_DestroyWindow(window);
+        SDL_Quit();
+        return 1;
+    }
+    SDL_MetalView view = SDL_Metal_CreateView(window);
+    CAMetalLayer* layer = (__bridge CAMetalLayer*)SDL_Metal_GetLayer(view);
+    layer.device = metalDevice;
+    layer.pixelFormat = MTLPixelFormatBGRA8Unorm;
+
+    id<MTLCommandQueue> commandQueue = [layer.device newCommandQueue];
+    MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor new];
+
     // Setup Dear ImGui context
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
-    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;  // Enable Keyboard Controls
-    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;   // Enable Gamepad Controls
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;     // Enable Keyboard Controls
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad;      // Enable Gamepad Controls
 
-    // Setup style
+    // Setup Dear ImGui style
     ImGui::StyleColorsDark();
     //ImGui::StyleColorsLight();
 
+    // Setup scaling
+    ImGuiStyle& style = ImGui::GetStyle();
+    style.ScaleAllSizes(main_scale);        // Bake a fixed style scale. (until we have a solution for dynamic style scaling, changing this requires resetting Style + calling this again)
+    style.FontScaleDpi = main_scale;        // Set initial font scale. (in docking branch: using io.ConfigDpiScaleFonts=true automatically overrides this for every window depending on the current monitor)
+
+    // Setup Platform/Renderer backends
+    ImGui_ImplMetal_Init(layer.device);
+    ImGui_ImplSDL2_InitForMetal(window);
+
     // Load Fonts
     // - If fonts are not explicitly loaded, Dear ImGui will select an embedded font: either AddFontDefaultVector() or AddFontDefaultBitmap().
     //   This selection is based on (style.FontSizeBase * style.FontScaleMain * style.FontScaleDpi) reaching a small threshold.
@@ -47,48 +98,10 @@ int main(int, char**)
     //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf");
     //IM_ASSERT(font != nullptr);
 
-    // Setup SDL
-    // (Some versions of SDL before <2.0.10 appears to have performance/stalling issues on a minority of Windows systems,
-    // depending on whether SDL_INIT_GAMECONTROLLER is enabled or disabled.. updating to latest version of SDL is recommended!)
-    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0)
-    {
-        printf("Error: %s\n", SDL_GetError());
-        return 1;
-    }
-
-    // Inform SDL that we will be using metal for rendering. Without this hint initialization of metal renderer may fail.
-    SDL_SetHint(SDL_HINT_RENDER_DRIVER, "metal");
-
-    // Enable native IME.
-    SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
-
-    SDL_Window* window = SDL_CreateWindow("Dear ImGui SDL+Metal example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 800, SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
-    if (window == nullptr)
-    {
-        printf("Error creating window: %s\n", SDL_GetError());
-        return -2;
-    }
-
-    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
-    if (renderer == nullptr)
-    {
-        printf("Error creating renderer: %s\n", SDL_GetError());
-        return -3;
-    }
-
-    // Setup Platform/Renderer backends
-    CAMetalLayer* layer = (__bridge CAMetalLayer*)SDL_RenderGetMetalLayer(renderer);
-    layer.pixelFormat = MTLPixelFormatBGRA8Unorm;
-    ImGui_ImplMetal_Init(layer.device);
-    ImGui_ImplSDL2_InitForMetal(window);
-
-    id<MTLCommandQueue> commandQueue = [layer.device newCommandQueue];
-    MTLRenderPassDescriptor* renderPassDescriptor = [MTLRenderPassDescriptor new];
-
     // Our state
     bool show_demo_window = true;
     bool show_another_window = false;
-    float clear_color[4] = {0.45f, 0.55f, 0.60f, 1.00f};
+    float clear_color[4] = { 0.45f, 0.55f, 0.60f, 1.00f };
 
     // Main loop
     bool done = false;
@@ -112,7 +125,8 @@ int main(int, char**)
             }
 
             int width, height;
-            SDL_GetRendererOutputSize(renderer, &width, &height);
+            SDL_GetWindowSizeInPixels(window, &width, &height);
+
             layer.drawableSize = CGSizeMake(width, height);
             id<CAMetalDrawable> drawable = [layer nextDrawable];
 
@@ -168,7 +182,8 @@ int main(int, char**)
 
             // Rendering
             ImGui::Render();
-            ImGui_ImplMetal_RenderDrawData(ImGui::GetDrawData(), commandBuffer, renderEncoder);
+            ImDrawData* draw_data = ImGui::GetDrawData();
+            ImGui_ImplMetal_RenderDrawData(draw_data, commandBuffer, renderEncoder);
 
             [renderEncoder popDebugGroup];
             [renderEncoder endEncoding];
@@ -183,7 +198,6 @@ int main(int, char**)
     ImGui_ImplSDL2_Shutdown();
     ImGui::DestroyContext();
 
-    SDL_DestroyRenderer(renderer);
     SDL_DestroyWindow(window);
     SDL_Quit();
 

examples/example_sdl2_opengl2/example_sdl2_opengl2.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -92,6 +92,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -107,6 +108,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_sdl2_opengl3/example_sdl2_opengl3.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -92,6 +92,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -107,6 +108,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>

examples/example_sdl2_opengl3/main.cpp

@@ -39,31 +39,28 @@ int main(int, char**)
         return 1;
     }
 
-    // Decide GL+GLSL versions
+    // Select GL version + let the backend select a GLSL version
+    const char* glsl_version = nullptr;
 #if defined(IMGUI_IMPL_OPENGL_ES2)
     // GL ES 2.0 + GLSL 100 (WebGL 1.0)
-    const char* glsl_version = "#version 100";
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
 #elif defined(IMGUI_IMPL_OPENGL_ES3)
     // GL ES 3.0 + GLSL 300 es (WebGL 2.0)
-    const char* glsl_version = "#version 300 es";
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
 #elif defined(__APPLE__)
-    // GL 3.2 Core + GLSL 150
-    const char* glsl_version = "#version 150";
+    // GL 3.2 Core + generally GLSL 150
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG); // Always required on Mac
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 2);
 #else
-    // GL 3.0 + GLSL 130
-    const char* glsl_version = "#version 130";
+    // GL 3.0 + generally GLSL 130
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, 0);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
     SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);

examples/example_sdl2_sdlrenderer2/example_sdl2_sdlrenderer2.vcxproj

@@ -29,27 +29,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -93,6 +93,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -108,6 +109,7 @@
       <Optimization>Disabled</Optimization>
       <AdditionalIncludeDirectories>..\..;..\..\backends;%SDL2_DIR%\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -184,4 +186,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

examples/example_sdl2_vulkan/example_sdl2_vulkan.vcxproj

@@ -28,27 +28,27 @@
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
-    <PlatformToolset>v140</PlatformToolset>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
@@ -93,6 +93,7 @@
       <AdditionalIncludeDirectories>..\..;..\..\backends;%VULKAN_SDK%\include;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -109,6 +110,7 @@
       <AdditionalIncludeDirectories>..\..;..\..\backends;%VULKAN_SDK%\include;%SDL2_DIR%\include;$(VcpkgCurrentInstalledDir)include\SDL2;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PreprocessorDefinitions>_MBCS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+      <SupportJustMyCode>false</SupportJustMyCode>
     </ClCompile>
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
@@ -187,4 +189,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>

examples/example_sdl2_vulkan/main.cpp

@@ -184,7 +184,8 @@ static void SetupVulkan(ImVector<const char*> instance_extensions)
     {
         VkDescriptorPoolSize pool_sizes[] =
         {
-            { VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, IMGUI_IMPL_VULKAN_MINIMUM_IMAGE_SAMPLER_POOL_SIZE },
+            { VK_DESCRIPTOR_TYPE_SAMPLED_IMAGE, IMGUI_IMPL_VULKAN_MINIMUM_SAMPLED_IMAGE_POOL_SIZE },
+            { VK_DESCRIPTOR_TYPE_SAMPLER, IMGUI_IMPL_VULKAN_MINIMUM_SAMPLER_POOL_SIZE },
         };
         VkDescriptorPoolCreateInfo pool_info = {};
         pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
@@ -385,7 +386,7 @@ int main(int, char**)
 
     // Create Framebuffers
     int w, h;
-    SDL_GetWindowSize(window, &w, &h);
+    SDL_GetWindowSizeInPixels(window, &w, &h);
     ImGui_ImplVulkanH_Window* wd = &g_MainWindowData;
     SetupVulkanWindow(wd, surface, w, h);
 
@@ -474,7 +475,7 @@ int main(int, char**)
 
         // Resize swap chain?
         int fb_width, fb_height;
-        SDL_GetWindowSize(window, &fb_width, &fb_height);
+        SDL_GetWindowSizeInPixels(window, &fb_width, &fb_height);
         if (fb_width > 0 && fb_height > 0 && (g_SwapChainRebuild || g_MainWindowData.Width != fb_width || g_MainWindowData.Height != fb_height))
         {
             ImGui_ImplVulkan_SetMinImageCount(g_MinImageCount);