From 752c4eec5027988acf406346a20e49eaabdb25b3 Mon Sep 17 00:00:00 2001
From: sarpsenturk <sarpsenturk38@gmail.com>
Date: Wed, 23 Sep 2026 23:15:57 +0300
Subject: [PATCH] Backends: Vulkan: don't transition swapchain images before
 acquire

---
 backends/imgui_impl_vulkan.cpp | 75 ----------------------------------
 1 file changed, 75 deletions(-)

diff --git a/backends/imgui_impl_vulkan.cpp b/backends/imgui_impl_vulkan.cpp
index 80b9d58ab..406395538 100644
--- a/backends/imgui_impl_vulkan.cpp
+++ b/backends/imgui_impl_vulkan.cpp
@@ -1918,81 +1918,6 @@ void ImGui_ImplVulkanH_CreateOrResizeWindow(VkInstance instance, VkPhysicalDevic
 
     ImGui_ImplVulkanH_CreateWindowSwapChain(physical_device, device, wd, allocator, width, height, min_image_count, image_usage);
     ImGui_ImplVulkanH_CreateWindowCommandBuffers(physical_device, device, wd, queue_family, allocator);
-
-    // FIXME: to submit the command buffer, we need a queue. In the examples folder, the ImGui_ImplVulkanH_CreateOrResizeWindow function is called
-    // before the ImGui_ImplVulkan_Init function, so we don't have access to the queue yet. Here we have the queue_family that we can use to grab
-    // a queue from the device and submit the command buffer. It would be better to have access to the queue as suggested in the FIXME below.
-    VkCommandPool command_pool;
-    VkCommandPoolCreateInfo pool_info = {};
-    pool_info.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
-    pool_info.queueFamilyIndex = queue_family;
-    VkResult err = vkCreateCommandPool(device, &pool_info, allocator, &command_pool);
-    check_vk_result(err);
-
-    VkFenceCreateInfo fence_info = {};
-    fence_info.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
-    VkFence fence;
-    err = vkCreateFence(device, &fence_info, allocator, &fence);
-    check_vk_result(err);
-
-    VkCommandBufferAllocateInfo alloc_info = {};
-    alloc_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
-    alloc_info.commandPool = command_pool;
-    alloc_info.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
-    alloc_info.commandBufferCount = 1;
-    VkCommandBuffer command_buffer;
-    err = vkAllocateCommandBuffers(device, &alloc_info, &command_buffer);
-    check_vk_result(err);
-
-    VkCommandBufferBeginInfo begin_info = {};
-    begin_info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
-    begin_info.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
-    err = vkBeginCommandBuffer(command_buffer, &begin_info);
-    check_vk_result(err);
-
-    // Transition the images to the correct layout for rendering
-    for (uint32_t i = 0; i < wd->ImageCount; i++)
-    {
-        VkImageMemoryBarrier barrier = {};
-        barrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
-        barrier.image = wd->Frames[i].Backbuffer;
-        barrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
-        barrier.newLayout = VK_IMAGE_LAYOUT_PRESENT_SRC_KHR;
-        barrier.srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-        barrier.dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED;
-        barrier.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
-        barrier.subresourceRange.levelCount = 1;
-        barrier.subresourceRange.layerCount = 1;
-        vkCmdPipelineBarrier(command_buffer, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, 0, 0, nullptr, 0, nullptr, 1, &barrier);
-    }
-
-    err = vkEndCommandBuffer(command_buffer);
-    check_vk_result(err);
-    VkSubmitInfo submit_info = {};
-    submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
-    submit_info.commandBufferCount = 1;
-    submit_info.pCommandBuffers = &command_buffer;
-
-    VkQueue queue;
-    vkGetDeviceQueue(device, queue_family, 0, &queue);
-    err = vkQueueSubmit(queue, 1, &submit_info, fence);
-    check_vk_result(err);
-    err = vkWaitForFences(device, 1, &fence, VK_TRUE, UINT64_MAX);
-    check_vk_result(err);
-    err = vkResetFences(device, 1, &fence);
-    check_vk_result(err);
-
-    err = vkResetCommandPool(device, command_pool, 0);
-    check_vk_result(err);
-
-    // Destroy command buffer and fence and command pool
-    vkFreeCommandBuffers(device, command_pool, 1, &command_buffer);
-    vkDestroyCommandPool(device, command_pool, allocator);
-    vkDestroyFence(device, fence, allocator);
-    command_pool = VK_NULL_HANDLE;
-    command_buffer = VK_NULL_HANDLE;
-    fence = VK_NULL_HANDLE;
-    queue = VK_NULL_HANDLE;
 }
 
 void ImGui_ImplVulkanH_DestroyWindow(VkInstance instance, VkDevice device, ImGui_ImplVulkanH_Window* wd, const VkAllocationCallbacks* allocator)