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- <head>
- <title>"SDL_GL_SetAttribute"("3") manual page</title>
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- <body bgcolor='#efefef' text='black' link='blue' vlink='#551A8B' alink='red'>
- <a href='#toc'>Table of Contents</a><p>
-
- <h2><a name='sect0' href='#toc0'>Name</a></h2>
- SDL_GL_SetAttribute- Set a special SDL/OpenGL attribute
- <h2><a name='sect1' href='#toc1'>Synopsis</a></h2>
- <p>
- <b>#include
- "SDL.h" <p>
- </b><b>int <b>SDL_GL_SetAttribute</b></b>(<b>SDL_GLattr attr, int value</b>);
- <h2><a name='sect2' href='#toc2'>Description</a></h2>
- <p>
- Sets
- the OpenGL <i>attribute</i> <b>attr</b> to <b>value</b>. The attributes you set don't take effect
- until after a call to <i><b>SDL_SetVideoMode</b></i>. You should use <i><b>SDL_GL_GetAttribute</b></i>
- to check the values after a <b>SDL_SetVideoMode</b> call.
- <h2><a name='sect3' href='#toc3'>Return Value</a></h2>
- <p>
- Returns <b>0</b>
- on success, or <b>-1</b> on error.
- <h2><a name='sect4' href='#toc4'>Example</a></h2>
- <p>
- <br>
- <pre>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;
- }
- </pre><p>
- <p>
- <blockquote><b>Note: <p>
- The <b>SDL_DOUBLEBUF</b></b> 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. </blockquote>
-
- <h2><a name='sect5' href='#toc5'>See Also</a></h2>
- <p>
- <i><b>SDL_GL_GetAttribute</b></i>, <i>GL
- Attributes</i>
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- <hr><p>
- <a name='toc'><b>Table of Contents</b></a><p>
- <ul>
- <li><a name='toc0' href='#sect0'>Name</a></li>
- <li><a name='toc1' href='#sect1'>Synopsis</a></li>
- <li><a name='toc2' href='#sect2'>Description</a></li>
- <li><a name='toc3' href='#sect3'>Return Value</a></li>
- <li><a name='toc4' href='#sect4'>Example</a></li>
- <li><a name='toc5' href='#sect5'>See Also</a></li>
- </ul>
- </body>
- </html>
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