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view docs/man3/SDL_GLattr.3 @ 3100:7dc982143c06
Date: Sun, 22 Mar 2009 12:52:29 +0000
From: Luke Benstead
Subject: OpenGL 3.0 Context Creation
I've attached a patch which implements OpenGL 3.x context creation on
the latest SVN. I've added two options to SDL_GL_SetAttribute, these
are SDL_GL_CONTEXT_MAJOR_VERSION and SDL_GL_CONTEXT_MINOR_VERSION.
These default to 2 and 1 respectively. If the major version is less
than 3 then the current context creation method is used, otherwise the
appropriate new context creation function is called (depending on the
platform).
Sample code:
if (SDL_Init(SDL_INIT_VIDEO) != 0) {
printf("Unable to initialize SDL: %s\n", SDL_GetError());
return 1;
}
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3); //Without these 2 lines, SDL will create a GL 2.x context
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_Surface* screen = SDL_SetVideoMode( 640, 480, 16, SDL_OPENGL | SDL_FULLSCREEN );
I've implemented context creation on both Win32 and X and run basic
tests on both. This patch doesn't provide access to all the options
allowed by the new context creation (e.g. shared contexts, forward
compatible contexts) but they can be added pretty easily.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 24 Mar 2009 10:43:53 +0000 |
| parents | 546f7c1eb755 |
| children | 1238da4a7112 |
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.TH "SDL_GLattr" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_GLattr \- SDL GL Attributes .SH "ATTRIBUTES" .TP 20 \fBSDL_GL_RED_SIZE\fP Size of the framebuffer red component, in bits .TP 20 \fBSDL_GL_GREEN_SIZE\fP Size of the framebuffer green component, in bits .TP 20 \fBSDL_GL_BLUE_SIZE\fP Size of the framebuffer blue component, in bits .TP 20 \fBSDL_GL_ALPHA_SIZE\fP Size of the framebuffer alpha component, in bits .TP 20 \fBSDL_GL_DOUBLEBUFFER\fP 0 or 1, enable or disable double buffering .TP 20 \fBSDL_GL_BUFFER_SIZE\fP Size of the framebuffer, in bits .TP 20 \fBSDL_GL_DEPTH_SIZE\fP Size of the depth buffer, in bits .TP 20 \fBSDL_GL_STENCIL_SIZE\fP Size of the stencil buffer, in bits .TP 20 \fBSDL_GL_ACCUM_RED_SIZE\fP Size of the accumulation buffer red component, in bits .TP 20 \fBSDL_GL_ACCUM_GREEN_SIZE\fP Size of the accumulation buffer green component, in bits .TP 20 \fBSDL_GL_ACCUM_BLUE_SIZE\fP Size of the accumulation buffer blue component, in bits .TP 20 \fBSDL_GL_ACCUM_ALPHA_SIZE\fP Size of the accumulation buffer alpha component, in bits .SH "DESCRIPTION" .PP While you can set most OpenGL attributes normally, the attributes list above must be known \fIbefore\fP SDL sets the video mode\&. These attributes a set and read with \fI\fBSDL_GL_SetAttribute\fP\fR and \fI\fBSDL_GL_GetAttribute\fP\fR\&. .SH "SEE ALSO" .PP \fI\fBSDL_GL_SetAttribute\fP\fR, \fI\fBSDL_GL_GetAttribute\fP\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01