SYNOPSIS

       #include "SDL.h"

       int SDL_GL_SetAttribute(SDL_GLattr attr, int value);

DESCRIPTION

       Sets  the  OpenGL attribute attr to value. The attributes you set don't
       take effect until after a call  to  SDL_SetVideoMode.  You  should  use
       SDL_GL_GetAttribute  to check the values after a SDL_SetVideoMode call.

RETURN VALUE

       Returns 0 on success, or -1 on error.

EXAMPLE

       SDL_GL_SetAttribute( SDL_GL_RED_SIZE, 5 );
       SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, 5 );
       SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, 5 );
       SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, 16 );
       SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );
       if ( (screen=SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL )) == NULL ) {
         fprintf(stderr, "Couldn't set GL mode: %s
       ", SDL_GetError());
         SDL_Quit();
         return;
       }


              Note:

              The SDL_DOUBLEBUF flag is not required to enable double  buffer-
              ing  when  setting  an  OpenGL  video  mode. Double buffering is
              enabled or disabled using the SDL_GL_DOUBLEBUFFER attribute.

SEE ALSO

       SDL_GL_GetAttribute, GL Attributes



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