.TH "SDL_GL_SetAttribute" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference"

.SH "NAME"

SDL_GL_SetAttribute \- Set a special SDL/OpenGL attribute

.SH "SYNOPSIS"

.PP

\fB#include "SDL\&.h"

.sp

\fBint \fBSDL_GL_SetAttribute\fP\fR(\fBSDL_GLattr attr, int value\fR);

.SH "DESCRIPTION"

.PP

Sets the OpenGL \fIattribute\fR \fBattr\fR to \fBvalue\fR\&. The attributes you set don\&'t take effect until after a call to \fI\fBSDL_SetVideoMode\fP\fR\&. You should use \fI\fBSDL_GL_GetAttribute\fP\fR to check the values after a \fBSDL_SetVideoMode\fP call\&.

.SH "RETURN VALUE"

.PP

Returns \fB0\fR on success, or \fB-1\fR on error\&.

.SH "EXAMPLE"

.PP

.nf

\f(CWSDL_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;

}\fR

.fi

.PP

.PP

.RS

\fBNote:

.PP

The \fBSDL_DOUBLEBUF\fP flag is not required to enable double buffering when setting an OpenGL video mode\&. Double buffering is enabled or disabled using the SDL_GL_DOUBLEBUFFER attribute\&.

.RE

.SH "SEE ALSO"

.PP

\fI\fBSDL_GL_GetAttribute\fP\fR, \fIGL Attributes\fR

...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01