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man pages section 3: Library Interfaces and Headers

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Updated: Thursday, June 13, 2019
 
 

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

SDL_GL_GetProcAddress(3)       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 runtime, with  SDL_GL_LoadLi-
       brary,  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{
         .
         .
       }

ATTRIBUTES
       See attributes(7) for descriptions of the following attributes:


       +---------------+------------------+
       |ATTRIBUTE TYPE | ATTRIBUTE VALUE  |
       +---------------+------------------+
       |Availability   | library/sdl      |
       +---------------+------------------+
       |Stability      | Volatile         |
       +---------------+------------------+
SEE ALSO
       SDL_GL_LoadLibrary



NOTES
       This    software    was    built    from    source     available     at
       https://github.com/oracle/solaris-userland.    The  original  community
       source       was        downloaded        from         https://www.lib-
       sdl.org/release/SDL-1.2.15.tar.gz

       Further information about this software can be found on the open source
       community website at https://www.libsdl.org/.



SDL                         Tue 11 Sep 2001, 23:01    SDL_GL_GetProcAddress(3)