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Resize frame buffer method added

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IlyaShurupov 2024-06-18 14:48:26 +03:00 • committed by Ilya Shurupov
parent bc29860385
commit 8bfe44b3cd
6 changed files with 66 additions and 13 deletions
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48
RasterRender/private/FrameBuffer.cpp
View file

@ -4,7 +4,10 @@
#include <stdio.h>
void glerr(GLenum type) { printf("GL ERROR\n"); }
void glerr(GLenum type) {
printf("GL ERROR - %i\n", type);
}
#define AssertGL(x) \
{ \
x; \
@ -15,7 +18,8 @@ void glerr(GLenum type) { printf("GL ERROR\n"); }
using namespace tp;
RenderBuffer::RenderBuffer(const Vec2F& size) :
mSize(size) {
mSize(size), mSamples(0)
{
mDrawBuffers[0] = { GL_COLOR_ATTACHMENT0 };
@ -47,7 +51,8 @@ RenderBuffer::RenderBuffer(const Vec2F& size) :
}
RenderBuffer::RenderBuffer(const Vec2F& size, tp::uint1 samples) :
mSize(size) {
mSize(size), mSamples(samples)
{
mDrawBuffers[0] = { GL_COLOR_ATTACHMENT0 };
@ -115,3 +120,40 @@ RenderBuffer::~RenderBuffer() {
uint4 RenderBuffer::texId() const { return mTextureId; }
const Vec2F& RenderBuffer::getSize() const { return mSize; }
void RenderBuffer::resize(const Vec2F& size) {
if (size == mSize) return;
// Update size
mSize = size;
// Bind framebuffer
AssertGL(glBindFramebuffer(GL_FRAMEBUFFER, mFrameBufferID));
// Resize color texture
if (mSamples) {
AssertGL(glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, mTextureId));
AssertGL(glTexImage2DMultisample(
GL_TEXTURE_2D_MULTISAMPLE, mSamples, GL_RGBA, (GLsizei)size.x, (GLsizei)size.y, GL_TRUE
));
AssertGL(glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0));
} else {
AssertGL(glBindTexture(GL_TEXTURE_2D, mTextureId));
AssertGL(glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, (GLsizei)size.x, (GLsizei)size.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0));
AssertGL(glBindTexture(GL_TEXTURE_2D, 0));
}
// Resize depth renderbuffer
if (mSamples) {
AssertGL(glBindRenderbuffer(GL_RENDERBUFFER, mDepthBufferID));
AssertGL(glRenderbufferStorageMultisample(
GL_RENDERBUFFER, mSamples, GLW_CONTEXT_DEPTH_COMPONENT, (GLsizei)size.x, (GLsizei)size.y
));
} else {
AssertGL(glBindRenderbuffer(GL_RENDERBUFFER, mDepthBufferID));
AssertGL(glRenderbufferStorage(GL_RENDERBUFFER, GLW_CONTEXT_DEPTH_COMPONENT, (GLsizei)size.x, (GLsizei)size.y));
}
// Unbind framebuffer
AssertGL(glBindFramebuffer(GL_FRAMEBUFFER, 0));
}

13
RasterRender/public/FrameBuffer.hpp
View file

@ -7,7 +7,7 @@
namespace tp {
class RenderBuffer {
public:
RenderBuffer(const Vec2F& size);
explicit RenderBuffer(const Vec2F& size);
RenderBuffer(const Vec2F& size, tp::uint1 samples);
~RenderBuffer();
@ -16,10 +16,12 @@ namespace tp {
void clear();
void endDraw();
uint4 texId() const;
uint4 buffId() const;
[[nodiscard]] uint4 texId() const;
[[nodiscard]] uint4 buffId() const;
const Vec2F& getSize() const;
void resize(const Vec2F& size);
[[nodiscard]] const Vec2F& getSize() const;
public:
RGBA mClearCol = 0.f;
@ -28,7 +30,8 @@ namespace tp {
uint4 mFrameBufferID = 0; // regroups 0, 1, or more textures, and 0 or 1 depth buffer.
uint4 mTextureId = 0; // texture we're going to render to ( colour attachement #0 )
uint4 mDepthBufferID = 0;
uint4 mDrawBuffers[1];
uint4 mDrawBuffers[1] = { 0 };
Vec2F mSize;
ualni mSamples = 0;
};
};