qzdoom/src/gl/renderer/gl_renderbuffers.h

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2.9 KiB
C++

#ifndef __GL_RENDERBUFFERS_H
#define __GL_RENDERBUFFERS_H
#include "gl/shaders/gl_shader.h"
class FGLBloomTextureLevel
{
public:
GLuint VTexture = 0;
GLuint VFramebuffer = 0;
GLuint HTexture = 0;
GLuint HFramebuffer = 0;
GLuint Width = 0;
GLuint Height = 0;
};
class FGLExposureTextureLevel
{
public:
GLuint Texture = 0;
GLuint Framebuffer = 0;
GLuint Width = 0;
GLuint Height = 0;
};
class FGLRenderBuffers
{
public:
FGLRenderBuffers();
~FGLRenderBuffers();
bool Setup(int width, int height, int sceneWidth, int sceneHeight);
void BindSceneFB();
void BlitSceneToTexture();
void BindCurrentTexture(int index);
void BindCurrentFB();
void BindNextFB();
void NextTexture();
void BindOutputFB();
void BlitToEyeTexture(int eye);
void BindEyeTexture(int eye, int texunit);
void BindEyeFB(int eye, bool readBuffer = false);
enum { NumBloomLevels = 4 };
FGLBloomTextureLevel BloomLevels[NumBloomLevels];
TArray<FGLExposureTextureLevel> ExposureLevels;
GLuint ExposureTexture = 0;
GLuint ExposureFB = 0;
bool FirstExposureFrame = true;
static bool IsEnabled();
int GetWidth() const { return mWidth; }
int GetHeight() const { return mHeight; }
private:
void ClearScene();
void ClearPipeline();
void ClearEyeBuffers();
void ClearBloom();
void ClearExposureLevels();
void CreateScene(int width, int height, int samples);
void CreatePipeline(int width, int height);
void CreateBloom(int width, int height);
void CreateExposureLevels(int width, int height);
void CreateEyeBuffers(int eye);
GLuint Create2DTexture(const FString &name, GLuint format, int width, int height, const void *data = nullptr);
GLuint CreateRenderBuffer(const FString &name, GLuint format, int width, int height);
GLuint CreateRenderBuffer(const FString &name, GLuint format, int samples, int width, int height);
GLuint CreateFrameBuffer(const FString &name, GLuint colorbuffer);
GLuint CreateFrameBuffer(const FString &name, GLuint colorbuffer, GLuint depthstencil, bool colorIsARenderBuffer);
GLuint CreateFrameBuffer(const FString &name, GLuint colorbuffer, GLuint depth, GLuint stencil, bool colorIsARenderBuffer);
bool CheckFrameBufferCompleteness();
void ClearFrameBuffer(bool stencil, bool depth);
void DeleteTexture(GLuint &handle);
void DeleteRenderBuffer(GLuint &handle);
void DeleteFrameBuffer(GLuint &handle);
int mWidth = 0;
int mHeight = 0;
int mSamples = 0;
int mMaxSamples = 0;
int mSceneWidth = 0;
int mSceneHeight = 0;
static const int NumPipelineTextures = 2;
int mCurrentPipelineTexture = 0;
// Buffers for the scene
GLuint mSceneMultisample = 0;
GLuint mSceneDepthStencil = 0;
GLuint mSceneDepth = 0;
GLuint mSceneStencil = 0;
GLuint mSceneFB = 0;
// Effect/HUD buffers
GLuint mPipelineTexture[NumPipelineTextures];
GLuint mPipelineFB[NumPipelineTextures];
// Back buffer frame buffer
GLuint mOutputFB = 0;
// Eye buffers
TArray<GLuint> mEyeTextures;
TArray<GLuint> mEyeFBs;
static bool FailedCreate;
static bool BuffersActive;
};
#endif