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#ifndef OL_FRAMEBUFFER_HPP
#define OL_FRAMEBUFFER_HPP
#include "Includes.hpp"
#include "GlDriver.hpp"
#include "Declspec.hpp"
#include <vector>
#include <map>
namespace ol {
class OL_LIB_DECLSPEC FrameBuffer {
public:
virtual ~FrameBuffer();
virtual const char *GetName() = 0;
virtual bool Initialize() = 0;
virtual void BindToTexture( const OlTextureInfo &texture ) = 0;
virtual void Release() = 0;
virtual void Destroy( OlTextureInfo &texture ) = 0;
virtual void DestroySurfaces() = 0;
virtual void RefreshSurface() = 0;
virtual void ReadPixels( int x, int y, int width, int height, GLenum textureFormat, unsigned char *pixelData ) = 0;
virtual void CopyTexSubImage( int x, int y, int width, int height, int yOffset ) = 0;
static FrameBuffer &GetInstance();
static void Register( FrameBuffer *buffer );
static void DestroyFramebuffers();
private:
static void InitFramebuf();
static std::vector< FrameBuffer *> possibleFramebufs;
static FrameBuffer *frameBuffer;
};
class OL_LIB_DECLSPEC BackbufFramebuf : public FrameBuffer {
public:
BackbufFramebuf()
: boundTexture(0) {}
virtual ~BackbufFramebuf(){}
virtual const char *GetName();
virtual bool Initialize();
virtual void BindToTexture( const OlTextureInfo &texture );
virtual void Release();
virtual void Destroy( OlTextureInfo &texture );
virtual void DestroySurfaces();
virtual void RefreshSurface();
virtual void ReadPixels( int x, int y, int width, int height, GLenum textureFormat, unsigned char *pixelData );
virtual void CopyTexSubImage( int x, int y, int width, int height, int yOffset );
private:
const OlTextureInfo *boundTexture;
};
class OL_LIB_DECLSPEC OlFramebufferObjExt : public FrameBuffer {
public:
OlFramebufferObjExt()
: boundTexture( 0 ) {}
virtual ~OlFramebufferObjExt();
virtual const char *GetName();
virtual bool Initialize();
virtual void BindToTexture( const OlTextureInfo &texture );
virtual void Release();
virtual void Destroy( OlTextureInfo &texture );
virtual void DestroySurfaces();
virtual void RefreshSurface();
virtual void ReadPixels( int x, int y, int width, int height, GLenum textureFormat, unsigned char *pixelData );
virtual void CopyTexSubImage( int x, int y, int width, int height, int yOffset );
private:
#ifdef GL_EXT_framebuffer_object
#ifdef _WIN32
#ifndef PFNGLGENFRAMEBUFFERSEXTPROC
typedef void (APIENTRY * PFNGLGENFRAMEBUFFERSEXTPROC)
(GLsizei n, GLuint *renderbuffers);
#endif
#ifndef PFNGLFRAMEBUFFERTEXTURE2DEXTPROC
typedef void (APIENTRY * PFNGLFRAMEBUFFERTEXTURE2DEXTPROC)
(GLenum target, GLenum attachment,
GLenum textarget, GLuint texture,
GLenum level);
#endif
#ifndef PFNGLBINDFRAMEBUFFEREXTPROC
typedef void (APIENTRY * PFNGLBINDFRAMEBUFFEREXTPROC)
(GLenum target, GLuint renderbuffer);
#endif
#ifndef PFNGLDELETERENDERBUFFERSEXTPROC
typedef void (APIENTRY * PFNGLDELETERENDERBUFFERSEXTPROC)
(GLsizei n, const GLuint *renderbuffers);
#endif
PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT;
#endif // _WIN32
#endif // GL_EXT_framebuffer_object
//static const int INTERNAL_FORMAT;
std::map< GLuint, GLuint > bufferMap;
const OlTextureInfo *boundTexture;
};
}
#endif // OL_FRAMEBUFFER_HPP
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