#ifndef __WINGLEXTENSHIONS_H
#define __WINGLEXTENSHIONS_H
/*
Windowsの場合、OpenGL拡張機能を使う前に関数のポインタを取ってこないといけない。
例：glGenBuffersARBの場合
glGenBuffersARB =
	(PFNGLGENBUFFERSARBPROC)wglGetProcAddress("glGenBuffersARB");

又、コンパイラのバージョン等によってはglext.hが無い場合もあるので、
http://www.opengl.org/registry/
からglext.hももってきとかないといけない。

code by kei

*/

#ifdef _WIN32
#include <windows.h>
#if defined(_MSC_VER)
#include <gl/glext.h>
#else
#include <GL/glext.h>
#endif
#ifdef __MAIN
#define _WINGLEXTENSIONS_EXTERN
#define _WINGLEXTENSIONS_NULL =NULL
#else
#define _WINGLEXTENSIONS_EXTERN extern
#define _WINGLEXTENSIONS_NULL
#endif
_WINGLEXTENSIONS_EXTERN PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffersEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorageEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT _WINGLEXTENSIONS_NULL ;
_WINGLEXTENSIONS_EXTERN PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT _WINGLEXTENSIONS_NULL ;

_WINGLEXTENSIONS_EXTERN PFNGLCREATEPROGRAMOBJECTARBPROC glCreateProgramObjectARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLCREATESHADEROBJECTARBPROC glCreateShaderObjectARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLDELETEOBJECTARBPROC glDeleteObjectARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLDETACHOBJECTARBPROC glDetachObjectARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLATTACHOBJECTARBPROC glAttachObjectARB _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLSHADERSOURCEARBPROC glShaderSourceARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLCOMPILESHADERARBPROC glCompileShaderARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLLINKPROGRAMARBPROC glLinkProgramARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLGETINFOLOGARBPROC glGetInfoLogARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUSEPROGRAMOBJECTARBPROC glUseProgramObjectARB _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLGETOBJECTPARAMETERIVARBPROC glGetObjectParameterivARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLGETOBJECTPARAMETERFVARBPROC glGetObjectParameterfvARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLGETUNIFORMLOCATIONARBPROC glGetUniformLocationARB _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM1FARBPROC glUniform1fARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM2FARBPROC glUniform2fARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM3FARBPROC glUniform3fARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM4FARBPROC glUniform4fARB _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM1IARBPROC glUniform1iARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM2IARBPROC glUniform2iARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM3IARBPROC glUniform3iARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM4IARBPROC glUniform4iARB _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM1FVARBPROC glUniform1fvARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM2FVARBPROC glUniform2fvARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM3FVARBPROC glUniform3fvARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM4FVARBPROC glUniform4fvARB _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM1IVARBPROC glUniform1ivARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM2IVARBPROC glUniform2ivARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM3IVARBPROC glUniform3ivARB _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUNIFORM4IVARBPROC glUniform4ivARB _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLMULTTRANSPOSEMATRIXDPROC glMultTransposeMatrixd _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLACTIVETEXTUREPROC glActiveTexture _WINGLEXTENSIONS_NULL;
_WINGLEXTENSIONS_EXTERN PFNGLUSEPROGRAMPROC glUseProgram _WINGLEXTENSIONS_NULL;

_WINGLEXTENSIONS_EXTERN PFNGLGENBUFFERSARBPROC glGenBuffersARB _WINGLEXTENSIONS_NULL;		// VBO 名前生成
_WINGLEXTENSIONS_EXTERN PFNGLBINDBUFFERARBPROC glBindBufferARB _WINGLEXTENSIONS_NULL;		// VBO 結びつけ
_WINGLEXTENSIONS_EXTERN PFNGLBUFFERDATAARBPROC glBufferDataARB _WINGLEXTENSIONS_NULL;		// VBO データロード
_WINGLEXTENSIONS_EXTERN PFNGLDELETEBUFFERSARBPROC glDeleteBuffersARB _WINGLEXTENSIONS_NULL;	// VBO 削除

#undef _WINGLEXTENSIONS_EXTERN
#undef _WINGLEXTENSIONS_NULL



#endif

#endif