pgl.h

   1 #define GL_GLEXT_PROTOTYPES
   2 #ifdef _WIN32
   3 #define WIN32_LEAN_AND_MEAN
   4 #include <windows.h>
   5 #endif
   6 #ifdef __APPLE__
   7 #include <OpenGL/gl.h>
   8 #else
   9 #include <GL/gl.h>
  10 #endif
  11
  12 #ifndef GL_VERSION_1_5
  13 #define GL_ARRAY_BUFFER                   0x8892
  14 #define GL_DYNAMIC_DRAW                   0x88E8
  15 #define GL_STATIC_DRAW                    0x88E4
  16 #define GL_WRITE_ONLY                     0x88B9
  17 #ifndef APIENTRYP
  18 #define APIENTRYP APIENTRY *
  19 #endif
  20 typedef ptrdiff_t GLintptr;
  21 typedef ptrdiff_t GLsizeiptr;
  22 typedef void (APIENTRYP PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
  23 typedef void (APIENTRYP PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
  24 typedef void (APIENTRYP PFNGLBUFFERDATAPROC) (GLenum target, GLsizeiptr size, const GLvoid *data, GLenum usage);
  25 typedef void (APIENTRYP PFNGLBUFFERSUBDATAPROC) (GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid *data);
  26 typedef GLvoid* (APIENTRYP PFNGLMAPBUFFERPROC) (GLenum target, GLenum access);
  27 typedef GLboolean (APIENTRYP PFNGLUNMAPBUFFERPROC) (GLenum target);
  28 static PFNGLBINDBUFFERPROC glBindBuffer;
  29 static PFNGLGENBUFFERSPROC glGenBuffers;
  30 static PFNGLBUFFERDATAPROC glBufferData;
  31 static PFNGLMAPBUFFERPROC glMapBuffer;
  32 static PFNGLUNMAPBUFFERPROC glUnmapBuffer;
  33 static PFNGLBUFFERSUBDATAPROC glBufferSubData;
  34 #endif
  35
  36 #ifndef GL_ARB_vertex_program
  37 #define GL_VERTEX_PROGRAM_ARB             0x8620
  38 #define GL_PROGRAM_STRING_ARB             0x8628
  39 #define GL_VERTEX_ATTRIB_ARRAY_POINTER_ARB 0x8645
  40 #define GL_PROGRAM_ERROR_POSITION_ARB     0x864B
  41 #define GL_PROGRAM_ERROR_STRING_ARB       0x8874
  42 #define GL_PROGRAM_FORMAT_ASCII_ARB       0x8875
  43 #define GL_PROGRAM_FORMAT_ARB             0x8876
  44 #define GL_PROGRAM_ATTRIBS_ARB            0x88AC
  45 #define GL_MAX_PROGRAM_ATTRIBS_ARB        0x88AD
  46 typedef void (APIENTRYP PFNGLPROGRAMSTRINGARBPROC) (GLenum target, GLenum format, GLsizei len, const GLvoid *string);
  47 typedef void (APIENTRYP PFNGLBINDPROGRAMARBPROC) (GLenum target, GLuint program);
  48 typedef void (APIENTRYP PFNGLPROGRAMLOCALPARAMETER4FVARBPROC) (GLenum target, GLuint index, const GLfloat *params);
  49 typedef void (APIENTRYP PFNGLENABLEVERTEXATTRIBARRAYARBPROC) (GLuint index);
  50 typedef void (APIENTRYP PFNGLDISABLEVERTEXATTRIBARRAYARBPROC) (GLuint index);
  51 typedef void (APIENTRYP PFNGLVERTEXATTRIBPOINTERARBPROC) (GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer);
  52 static PFNGLBINDPROGRAMARBPROC glBindProgramARB;
  53 static PFNGLPROGRAMSTRINGARBPROC glProgramStringARB;
  54 static PFNGLPROGRAMLOCALPARAMETER4FVARBPROC glProgramLocalParameter4fvARB;
  55 static PFNGLENABLEVERTEXATTRIBARRAYARBPROC glEnableVertexAttribArrayARB;
  56 static PFNGLENABLEVERTEXATTRIBARRAYARBPROC glDisableVertexAttribArrayARB;
  57 static PFNGLVERTEXATTRIBPOINTERARBPROC glVertexAttribPointerARB;
  58 #endif
  59
  60 #define GETPA(name) for (;;) {                                          \
  61     *(PROC *) &gl##name = wglGetProcAddress ("gl" # name);              \
  62     if (!gl##name) {                                                    \
  63         fprintf (stderr, "could not get address of gl"#name"\n");       \
  64         exit (EXIT_FAILURE);                                            \
  65     }                                                                   \
  66     break;                                                              \
  67 }