Manual Pages for UNIX Operating System command usage for man SDL_GL_GetProcAddress

SDL API Reference                        SDL_GL_GetProcAddress(3)



NAME
     SDL_GL_GetProcAddress - Get the address of a GL function

SYNOPSIS
     #include "SDL.h"

     void *SDL_GL_GetProcAddress(const char* proc);

DESCRIPTION
     Returns the address of the GL function proc, or NULL if  the
     function  is  not found. If the GL library is loaded at run-
     time, with SDL_GL_LoadLibrary, then all GL functions must be
     retrieved  this  way. Usually this is used to retrieve func-
     tion pointers to OpenGL extensions.

EXAMPLE
     typedef void (*GL_ActiveTextureARB_Func)(unsigned int);
     GL_ActiveTextureARB_Func glActiveTextureARB_ptr = 0;
     int has_multitexture=1;
     .
     .
     .
     /* Get function pointer */
     glActiveTextureARB_ptr=(GL_ActiveTextureARB_Func) SDL_GL_GetProcAddress("glActiveTextureARB");

     /* Check for a valid function ptr */
     if(!glActiveTextureARB_ptr){
       fprintf(stderr, "Multitexture Extensions not present.
     ");
       has_multitexture=0;
     }
     .
     .
     .
     .
     if(has_multitexture){
       glActiveTextureARB_ptr(GL_TEXTURE0_ARB);
       .
       .
     }
     else{
       .
       .
     }

SEE ALSO
     SDL_GL_LoadLibrary








SDL            Last change: Tue 11 Sep 2001, 23:01              1