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view docs/man3/SDL_LockYUVOverlay.3 @ 2365:478fa831910f gsoc2008_iphone

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Added SDL_GL_RETAINED_BACKING to SDL_GLattr enum. Retained backing means the memory for color buffers, depth buffers, etc cannot be overwritten by other applications between frames. The default for this setting is 'on'. I wanted to add this because turning retained backing off on iPhone dramatically increases performance.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 18 Jul 2008 18:05:54 +0000
parents 546f7c1eb755
children 1238da4a7112
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.TH "SDL_LockYUVOverlay" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_LockYUVOverlay \- Lock an overlay
.SH "SYNOPSIS"
.PP
\fB#include "SDL\&.h"
.sp
\fBint \fBSDL_LockYUVOverlay\fP\fR(\fBSDL_Overlay *overlay\fR);
.SH "DESCRIPTION"
.PP
Much the same as \fI\fBSDL_LockSurface\fP\fR, \fBSDL_LockYUVOverlay\fP locks the \fI\fBoverlay\fR\fR for direct access to pixel data\&.
.SH "RETURN VALUE"
.PP
Returns \fB0\fR on success, or \fB-1\fR on an error\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_UnlockYUVOverlay\fP\fR, \fI\fBSDL_CreateYUVOverlay\fP\fR, \fI\fBSDL_Overlay\fR\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01