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video-shader-toys/apps/LoopThroughWithOpenGLCompositing/gl/renderer/OpenGLRenderer.h
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Layer program split
2026-05-08 17:10:29 +10:00

109 lines
4.1 KiB
C++

#pragma once
#include "GLExtensions.h"
#include "RenderTargetPool.h"
#include "ShaderTypes.h"
#include "TemporalHistoryBuffers.h"
#include <windows.h>
#include <filesystem>
#include <gl/gl.h>
#include <string>
#include <vector>
class OpenGLRenderer
{
public:
struct LayerProgram
{
struct TextureBinding
{
std::string samplerName;
std::filesystem::path sourcePath;
GLuint texture = 0;
};
struct TextBinding
{
std::string parameterId;
std::string samplerName;
std::string fontId;
GLuint texture = 0;
std::string renderedText;
unsigned renderedWidth = 0;
unsigned renderedHeight = 0;
};
std::string layerId;
std::string shaderId;
struct PassProgram
{
std::string passId;
GLuint shaderTextureBase = 0;
GLuint program = 0;
GLuint vertexShader = 0;
GLuint fragmentShader = 0;
std::vector<TextureBinding> textureBindings;
std::vector<TextBinding> textBindings;
};
std::vector<PassProgram> passes;
};
GLuint CaptureTexture() const { return mCaptureTexture; }
GLuint DecodedTexture() const { return mRenderTargets.Texture(RenderTargetId::Decoded); }
GLuint LayerTempTexture() const { return mRenderTargets.Texture(RenderTargetId::LayerTemp); }
GLuint CompositeTexture() const { return mRenderTargets.Texture(RenderTargetId::Composite); }
GLuint OutputTexture() const { return mRenderTargets.Texture(RenderTargetId::Output); }
GLuint OutputPackTexture() const { return mRenderTargets.Texture(RenderTargetId::OutputPack); }
GLuint TextureUploadBuffer() const { return mTextureUploadBuffer; }
GLuint DecodeFramebuffer() const { return mRenderTargets.Framebuffer(RenderTargetId::Decoded); }
GLuint LayerTempFramebuffer() const { return mRenderTargets.Framebuffer(RenderTargetId::LayerTemp); }
GLuint CompositeFramebuffer() const { return mRenderTargets.Framebuffer(RenderTargetId::Composite); }
GLuint OutputFramebuffer() const { return mRenderTargets.Framebuffer(RenderTargetId::Output); }
GLuint OutputPackFramebuffer() const { return mRenderTargets.Framebuffer(RenderTargetId::OutputPack); }
GLuint FullscreenVertexArray() const { return mFullscreenVAO; }
GLuint GlobalParamsUBO() const { return mGlobalParamsUBO; }
GLuint DecodeProgram() const { return mDecodeProgram; }
GLuint OutputPackProgram() const { return mOutputPackProgram; }
GLsizeiptr GlobalParamsUBOSize() const { return mGlobalParamsUBOSize; }
void SetGlobalParamsUBOSize(GLsizeiptr size) { mGlobalParamsUBOSize = size; }
void ReplaceLayerPrograms(std::vector<LayerProgram>& newPrograms) { mLayerPrograms.swap(newPrograms); }
std::vector<LayerProgram>& LayerPrograms() { return mLayerPrograms; }
const std::vector<LayerProgram>& LayerPrograms() const { return mLayerPrograms; }
TemporalHistoryBuffers& TemporalHistory() { return mTemporalHistory; }
const TemporalHistoryBuffers& TemporalHistory() const { return mTemporalHistory; }
void SetDecodeShaderProgram(GLuint program, GLuint vertexShader, GLuint fragmentShader);
void SetOutputPackShaderProgram(GLuint program, GLuint vertexShader, GLuint fragmentShader);
bool InitializeResources(unsigned inputFrameWidth, unsigned inputFrameHeight, unsigned captureTextureWidth, unsigned outputFrameWidth, unsigned outputFrameHeight, unsigned outputPackTextureWidth, std::string& error);
void ResizeView(int width, int height);
void PresentToWindow(HDC hdc, unsigned outputFrameWidth, unsigned outputFrameHeight);
void DestroyResources();
void DestroySingleLayerProgram(LayerProgram& layerProgram);
void DestroyLayerPrograms();
void DestroyDecodeShaderProgram();
void DestroyOutputPackShaderProgram();
private:
GLuint mCaptureTexture = 0;
GLuint mTextureUploadBuffer = 0;
GLuint mIdColorBuf = 0;
GLuint mIdDepthBuf = 0;
GLuint mFullscreenVAO = 0;
GLuint mGlobalParamsUBO = 0;
GLuint mDecodeProgram = 0;
GLuint mDecodeVertexShader = 0;
GLuint mDecodeFragmentShader = 0;
GLuint mOutputPackProgram = 0;
GLuint mOutputPackVertexShader = 0;
GLuint mOutputPackFragmentShader = 0;
GLsizeiptr mGlobalParamsUBOSize = 0;
int mViewWidth = 0;
int mViewHeight = 0;
std::vector<LayerProgram> mLayerPrograms;
RenderTargetPool mRenderTargets;
TemporalHistoryBuffers mTemporalHistory;
};