glextensions.h Example File
demos/boxes/glextensions.h
#ifndef GLEXTENSIONS_H
#define GLEXTENSIONS_H
#include <QtOpenGL>
#ifndef Q_WS_MAC
# ifndef APIENTRYP
# ifdef APIENTRY
# define APIENTRYP APIENTRY *
# else
# define APIENTRY
# define APIENTRYP *
# endif
# endif
#else
# define APIENTRY
# define APIENTRYP *
#endif
#ifndef GL_VERSION_1_2
#define GL_TEXTURE_3D 0x806F
#define GL_TEXTURE_WRAP_R 0x8072
#define GL_CLAMP_TO_EDGE 0x812F
#define GL_BGRA 0x80E1
#endif
#ifndef GL_VERSION_1_3
#define GL_TEXTURE0 0x84C0
#define GL_TEXTURE1 0x84C1
#define GL_TEXTURE2 0x84C2
#define GL_TEXTURE_CUBE_MAP 0x8513
#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
#endif
#ifndef GL_ARB_vertex_buffer_object
typedef ptrdiff_t GLsizeiptrARB;
#endif
#ifndef GL_VERSION_1_5
#define GL_ARRAY_BUFFER 0x8892
#define GL_ELEMENT_ARRAY_BUFFER 0x8893
#define GL_READ_WRITE 0x88BA
#define GL_STATIC_DRAW 0x88E4
#endif
#ifndef GL_EXT_framebuffer_object
#define GL_RENDERBUFFER_EXT 0x8D41
#define GL_FRAMEBUFFER_EXT 0x8D40
#define GL_FRAMEBUFFER_COMPLETE_EXT 0x8CD5
#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
#define GL_DEPTH_ATTACHMENT_EXT 0x8D00
#endif
#ifndef GL_ARB_vertex_shader
#define GL_VERTEX_SHADER_ARB 0x8B31
#endif
#ifndef GL_ARB_fragment_shader
#define GL_FRAGMENT_SHADER_ARB 0x8B30
#endif
#ifndef GL_ARB_shader_objects
typedef char GLcharARB;
typedef unsigned int GLhandleARB;
#define GL_OBJECT_COMPILE_STATUS_ARB 0x8B81
#define GL_OBJECT_LINK_STATUS_ARB 0x8B82
#define GL_OBJECT_INFO_LOG_LENGTH_ARB 0x8B84
#endif
typedef GLhandleARB (APIENTRY *_glCreateShaderObjectARB) (GLenum);
typedef void (APIENTRY *_glShaderSourceARB) (GLhandleARB, GLuint, const GLcharARB**, GLint *);
typedef void (APIENTRY *_glCompileShaderARB) (GLhandleARB);
typedef void (APIENTRY *_glGetObjectParameterivARB) (GLhandleARB, GLenum, int *);
typedef void (APIENTRY *_glDeleteObjectARB) (GLhandleARB);
typedef void (APIENTRY *_glGetInfoLogARB) (GLhandleARB, GLsizei, GLsizei *, GLcharARB *);
typedef GLhandleARB (APIENTRY *_glCreateProgramObjectARB) ();
typedef void (APIENTRY *_glAttachObjectARB) (GLhandleARB, GLhandleARB);
typedef void (APIENTRY *_glDetachObjectARB) (GLhandleARB, GLhandleARB);
typedef void (APIENTRY *_glLinkProgramARB) (GLhandleARB);
typedef void (APIENTRY *_glUseProgramObjectARB) (GLhandleARB);
typedef GLint (APIENTRY *_glGetUniformLocationARB) (GLhandleARB, const GLcharARB *);
typedef void (APIENTRY *_glUniform1iARB) (GLint, GLint);
typedef void (APIENTRY *_glUniform1fARB) (GLint, GLfloat);
typedef void (APIENTRY *_glUniform4fARB) (GLint, GLfloat, GLfloat, GLfloat, GLfloat);
typedef void (APIENTRY *_glUniformMatrix4fvARB) (GLint, GLuint, GLboolean, const GLfloat *);
typedef void (APIENTRY *_glGenFramebuffersEXT) (GLsizei, GLuint *);
typedef void (APIENTRY *_glGenRenderbuffersEXT) (GLsizei, GLuint *);
typedef void (APIENTRY *_glBindRenderbufferEXT) (GLenum, GLuint);
typedef void (APIENTRY *_glRenderbufferStorageEXT) (GLenum, GLenum, GLsizei, GLsizei);
typedef void (APIENTRY *_glDeleteFramebuffersEXT) (GLsizei, const GLuint*);
typedef void (APIENTRY *_glDeleteRenderbuffersEXT) (GLsizei, const GLuint*);
typedef void (APIENTRY *_glBindFramebufferEXT) (GLenum, GLuint);
typedef void (APIENTRY *_glFramebufferTexture2DEXT) (GLenum, GLenum, GLenum, GLuint, GLint);
typedef void (APIENTRY *_glFramebufferRenderbufferEXT) (GLenum, GLenum, GLenum, GLuint);
typedef GLenum (APIENTRY *_glCheckFramebufferStatusEXT) (GLenum);
typedef void (APIENTRY *_glActiveTexture) (GLenum);
typedef void (APIENTRY *_glTexImage3D) (GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid *);
typedef void (APIENTRY *_glGenBuffers) (GLsizei, GLuint *);
typedef void (APIENTRY *_glBindBuffer) (GLenum, GLuint);
typedef void (APIENTRY *_glBufferData) (GLenum, GLsizeiptrARB, const GLvoid *, GLenum);
typedef void (APIENTRY *_glDeleteBuffers) (GLsizei, const GLuint *);
typedef void *(APIENTRY *_glMapBuffer) (GLenum, GLenum);
typedef GLboolean (APIENTRY *_glUnmapBuffer) (GLenum);
struct GLExtensionFunctions
{
bool resolve(const QGLContext *context);
bool glslSupported();
bool fboSupported();
bool openGL15Supported();
_glCreateShaderObjectARB CreateShaderObjectARB;
_glShaderSourceARB ShaderSourceARB;
_glCompileShaderARB CompileShaderARB;
_glGetObjectParameterivARB GetObjectParameterivARB;
_glDeleteObjectARB DeleteObjectARB;
_glGetInfoLogARB GetInfoLogARB;
_glCreateProgramObjectARB CreateProgramObjectARB;
_glAttachObjectARB AttachObjectARB;
_glDetachObjectARB DetachObjectARB;
_glLinkProgramARB LinkProgramARB;
_glUseProgramObjectARB UseProgramObjectARB;
_glGetUniformLocationARB GetUniformLocationARB;
_glUniform1iARB Uniform1iARB;
_glUniform1fARB Uniform1fARB;
_glUniform4fARB Uniform4fARB;
_glUniformMatrix4fvARB UniformMatrix4fvARB;
_glGenFramebuffersEXT GenFramebuffersEXT;
_glGenRenderbuffersEXT GenRenderbuffersEXT;
_glBindRenderbufferEXT BindRenderbufferEXT;
_glRenderbufferStorageEXT RenderbufferStorageEXT;
_glDeleteFramebuffersEXT DeleteFramebuffersEXT;
_glDeleteRenderbuffersEXT DeleteRenderbuffersEXT;
_glBindFramebufferEXT BindFramebufferEXT;
_glFramebufferTexture2DEXT FramebufferTexture2DEXT;
_glFramebufferRenderbufferEXT FramebufferRenderbufferEXT;
_glCheckFramebufferStatusEXT CheckFramebufferStatusEXT;
_glActiveTexture ActiveTexture;
_glTexImage3D TexImage3D;
_glGenBuffers GenBuffers;
_glBindBuffer BindBuffer;
_glBufferData BufferData;
_glDeleteBuffers DeleteBuffers;
_glMapBuffer MapBuffer;
_glUnmapBuffer UnmapBuffer;
};
inline GLExtensionFunctions &getGLExtensionFunctions()
{
static GLExtensionFunctions funcs;
return funcs;
}
#define glCreateShaderObjectARB getGLExtensionFunctions().CreateShaderObjectARB
#define glShaderSourceARB getGLExtensionFunctions().ShaderSourceARB
#define glCompileShaderARB getGLExtensionFunctions().CompileShaderARB
#define glGetObjectParameterivARB getGLExtensionFunctions().GetObjectParameterivARB
#define glDeleteObjectARB getGLExtensionFunctions().DeleteObjectARB
#define glGetInfoLogARB getGLExtensionFunctions().GetInfoLogARB
#define glCreateProgramObjectARB getGLExtensionFunctions().CreateProgramObjectARB
#define glAttachObjectARB getGLExtensionFunctions().AttachObjectARB
#define glDetachObjectARB getGLExtensionFunctions().DetachObjectARB
#define glLinkProgramARB getGLExtensionFunctions().LinkProgramARB
#define glUseProgramObjectARB getGLExtensionFunctions().UseProgramObjectARB
#define glGetUniformLocationARB getGLExtensionFunctions().GetUniformLocationARB
#define glUniform1iARB getGLExtensionFunctions().Uniform1iARB
#define glUniform1fARB getGLExtensionFunctions().Uniform1fARB
#define glUniform4fARB getGLExtensionFunctions().Uniform4fARB
#define glUniformMatrix4fvARB getGLExtensionFunctions().UniformMatrix4fvARB
#define glGenFramebuffersEXT getGLExtensionFunctions().GenFramebuffersEXT
#define glGenRenderbuffersEXT getGLExtensionFunctions().GenRenderbuffersEXT
#define glBindRenderbufferEXT getGLExtensionFunctions().BindRenderbufferEXT
#define glRenderbufferStorageEXT getGLExtensionFunctions().RenderbufferStorageEXT
#define glDeleteFramebuffersEXT getGLExtensionFunctions().DeleteFramebuffersEXT
#define glDeleteRenderbuffersEXT getGLExtensionFunctions().DeleteRenderbuffersEXT
#define glBindFramebufferEXT getGLExtensionFunctions().BindFramebufferEXT
#define glFramebufferTexture2DEXT getGLExtensionFunctions().FramebufferTexture2DEXT
#define glFramebufferRenderbufferEXT getGLExtensionFunctions().FramebufferRenderbufferEXT
#define glCheckFramebufferStatusEXT getGLExtensionFunctions().CheckFramebufferStatusEXT
#define glActiveTexture getGLExtensionFunctions().ActiveTexture
#define glTexImage3D getGLExtensionFunctions().TexImage3D
#define glGenBuffers getGLExtensionFunctions().GenBuffers
#define glBindBuffer getGLExtensionFunctions().BindBuffer
#define glBufferData getGLExtensionFunctions().BufferData
#define glDeleteBuffers getGLExtensionFunctions().DeleteBuffers
#define glMapBuffer getGLExtensionFunctions().MapBuffer
#define glUnmapBuffer getGLExtensionFunctions().UnmapBuffer
#endif