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SDL_GL_GetProcAddress
Langue: en
Version: 121929 (mandriva - 01/05/08)
Section: 3 (Bibliothèques de fonctions)
NAME
SDL_GL_GetProcAddress - Get the address of a GL functionSYNOPSIS
#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
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