#ifndef __VPEXT_H
#define __VPEXT_H

//If windows...
#ifdef _WIN32
  #include <windows.h>
#endif

#if defined(__APPLE__)
  #include <OpenGL/gl.h>
  #include <OpenGL/glext.h>
#elif defined(sgi)
  #include <GL/gl.h>
  #include <GL/glx.h>
#elif defined(__linux__)
  #include <GL/gl.h>
  #include <GL/glx.h>
  #include <GL/glext.h>
#elif defined(WIN32)
  #include <GL/gl.h>
  #include <GL/glext.h>
#endif

#if defined(WIN32)
// VP function prototypes
extern PFNGLGENPROGRAMSNVPROC glGenProgramsNV;
extern PFNGLBINDPROGRAMNVPROC glBindProgramNV;
extern PFNGLLOADPROGRAMNVPROC glLoadProgramNV;
extern PFNGLEXECUTEPROGRAMNVPROC glExecuteProgramNV;
extern PFNGLPROGRAMPARAMETER4FNVPROC glProgramParameter4fNV;
extern PFNGLPROGRAMPARAMETER4FVNVPROC glProgramParameter4fvNV;
extern PFNGLPROGRAMPARAMETERS4FVNVPROC glProgramParameters4fvNV;
extern PFNGLTRACKMATRIXNVPROC glTrackMatrixNV;
extern PFNGLDELETEPROGRAMSNVPROC glDeleteProgramsNV;
extern PFNGLAREPROGRAMSRESIDENTNVPROC glAreProgramsResidentNV;
extern PFNGLGETPROGRAMPARAMETERFVNVPROC glGetProgramParameterfvNV;
extern PFNGLGETPROGRAMIVNVPROC glGetProgramivNV;
extern PFNGLGETPROGRAMSTRINGNVPROC glGetProgramStringNV;
extern PFNGLGETTRACKMATRIXIVNVPROC glGetTrackMatrixivNV;
extern PFNGLGETVERTEXATTRIBFVNVPROC glGetVertexAttribfvNV;
extern PFNGLGETVERTEXATTRIBIVNVPROC glGetVertexAttribivNV;
extern PFNGLGETVERTEXATTRIBPOINTERVNVPROC glGetVertexAttribPointerNV;
extern PFNGLISPROGRAMNVPROC glIsProgramNV;
extern PFNGLREQUESTRESIDENTPROGRAMSNVPROC glRequestResidentProgramsNV;

extern PFNGLVERTEXATTRIBPOINTERNVPROC glVertexAttribPointerNV;
extern PFNGLVERTEXATTRIB1FNVPROC glVertexAttrib1fNV;
extern PFNGLVERTEXATTRIB1FVNVPROC glVertexAttrib1fvNV;
extern PFNGLVERTEXATTRIB2FNVPROC glVertexAttrib2fNV;
extern PFNGLVERTEXATTRIB2FVNVPROC glVertexAttrib2fvNV;
extern PFNGLVERTEXATTRIB3FNVPROC glVertexAttrib3fNV;
extern PFNGLVERTEXATTRIB3FVNVPROC glVertexAttrib3fvNV;
extern PFNGLVERTEXATTRIB4FNVPROC glVertexAttrib4fNV;
extern PFNGLVERTEXATTRIB4FVNVPROC glVertexAttrib4fvNV;
extern PFNGLVERTEXATTRIB4UBVNVPROC glVertexAttrib4ubvNV;
extern PFNGLVERTEXATTRIBS1FVNVPROC glVertexAttribs1fvNV;
extern PFNGLVERTEXATTRIBS2FVNVPROC glVertexAttribs2fvNV;
extern PFNGLVERTEXATTRIBS3FVNVPROC glVertexAttribs3fvNV;
extern PFNGLVERTEXATTRIBS4FVNVPROC glVertexAttribs4fvNV;
extern PFNGLVERTEXATTRIBS4UBVNVPROC glVertexAttribs4ubvNV;

#endif
//Some functions to initialize the extension
bool CheckExtension(const char* ext);
bool InitializeVertexProgramNV();

#endif