handle src buffer underflow corner cases
[sdl_omap.git] / docs / man3 / SDL_Flip.3
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e14743d1 1.TH "SDL_Flip" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference"
2.SH "NAME"
3SDL_Flip \- Swaps screen buffers
4.SH "SYNOPSIS"
5.PP
6\fB#include "SDL\&.h"
7.sp
8\fBint \fBSDL_Flip\fP\fR(\fBSDL_Surface *screen\fR);
9.SH "DESCRIPTION"
10.PP
11On hardware that supports double-buffering, this function sets up a flip and returns\&. The hardware will wait for vertical retrace, and then swap video buffers before the next video surface blit or lock will return\&. On hardware that doesn\&'t support double-buffering, this is equivalent to calling \fISDL_UpdateRect\fR\fB(screen, 0, 0, 0, 0)\fR
12.PP
13The \fBSDL_DOUBLEBUF\fP flag must have been passed to \fISDL_SetVideoMode\fR, when setting the video mode for this function to perform hardware flipping\&.
14.SH "RETURN VALUE"
15.PP
16This function returns \fB0\fR if successful, or \fB-1\fR if there was an error\&.
17.SH "SEE ALSO"
18.PP
19\fI\fBSDL_SetVideoMode\fP\fR, \fI\fBSDL_UpdateRect\fP\fR, \fI\fBSDL_Surface\fR\fR
20.\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01