SDL_GL_SetAttribute

Name

SDL_GL_SetAttribute -- Set a special SDL/OpenGL attribute

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 | SDL_DOUBLEBUF)) == NULL ) {
  fprintf(stderr, "Couldn't set GL mode: %s\n", SDL_GetError());
  SDL_Quit();
  return;
}

See Also

SDL_GL_GetAttribute, GL Attributes