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 runtime, with SDL_GL_LoadLibrary, then all GL  functions  must  be
       retrieved  this  way.  Usually  this  is  used  to  retrieve  function  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