Flashnux

GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)

GNU/Linux

CentOS 5.3

SDL_GL_GetProcAddress(3)
SDL_GL_GetProcAddress

SDL_GL_GetProcAddress

NAME
SYNOPSIS
DESCRIPTION
EXAMPLE
SEE ALSO

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

SDL_GL_GetProcAddress(3)