OpenGrok

#include "SDL.h" void *SDL_GL_GetProcAddress(const char* proc);

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.

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{
 .
 .
}

SDL_GL_LoadLibrary created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01