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 GLvoid* (APIENTRYP PFNGLMAPBUFFERPROC) (GLenum target, GLenum access);
  26 typedef GLboolean (APIENTRYP PFNGLUNMAPBUFFERPROC) (GLenum target);
  27 static PFNGLBINDBUFFERPROC glBindBuffer;
  28 static PFNGLGENBUFFERSPROC glGenBuffers;
  29 static PFNGLBUFFERDATAPROC glBufferData;
  30 static PFNGLMAPBUFFERPROC glMapBuffer;
  31 static PFNGLUNMAPBUFFERPROC glUnmapBuffer;
  32 #define GETPA(name) for (;;) {                                          \
  33     *(PROC *) &gl##name = wglGetProcAddress ("gl" # name);              \
  34     if (!gl##name) {                                                    \
  35         fprintf (stderr, "could not get address of gl"#name"\n");       \
  36         exit (EXIT_FAILURE);                                            \
  37     }                                                                   \
  38     break;                                                              \
  39 }
  40 #endif