Mercurial > sdl-ios-xcode
view docs/man3/SDL_GL_GetAttribute.3 @ 2222:926294b2bb4e
Emphasized the separation between SDL_Surface and SDL_Texture
- SDL_Surface is a system memory representation of pixel data
- SDL_Texture is a video memory representation of pixel data
The concept of SDL_Surface with SDL_HWSURFACE is no longer used.
Separated SDL_Texture types by usage rather than memory type
- SDL_TEXTUREACCESS_STATIC is for rarely changed pixel data,
can be placed in video memory.
- SDL_TEXTUREACCESS_STREAMING is for frequently changing pixel
data, usually placed in system memory or AGP memory.
Optimized the SDL_compat usage of the OpenGL renderer by only
using one copy of the framebuffer instead of two.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 11 Aug 2007 20:54:31 +0000 |
| parents | e5bc29de3f0a |
| children | 546f7c1eb755 |
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.TH "SDL_GL_GetAttribute" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" .SH "NAME" SDL_GL_GetAttribute\- Get the value of a special SDL/OpenGL attribute .SH "SYNOPSIS" .PP \fB#include "SDL\&.h" .sp \fBint \fBSDL_GL_GetAttribute\fP\fR(\fBSDLGLattr attr, int *value\fR); .SH "DESCRIPTION" .PP Places the value of the SDL/OpenGL \fIattribute\fR \fBattr\fR into \fBvalue\fR\&. This is useful after a call to \fI\fBSDL_SetVideoMode\fP\fR to check whether your attributes have been \fIset\fR as you expected\&. .SH "RETURN VALUE" .PP Returns \fB0\fR on success, or \fB-1\fR on an error\&. .SH "SEE ALSO" .PP \fI\fBSDL_GL_SetAttribute\fP\fR, \fIGL Attributes\fR ...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01