NAME¶
gl_enablepageflipping - enables automatic page flipping
SYNOPSIS¶
#include <vgagl.h>
int gl_enablepageflipping(GraphicsContext *gc);
DESCRIPTION¶
Enable page flipping or triple buffering in
gl_copyscreen(3) if the
physical context
gc can do it.
Returns 3 if triple buffering will be used, 2 for page flipping, 0 if page
flipping is not possible (due to video memory/mode limitations).
When pageflipping is enabled, the
gl_screenoffset(3) is ignored in
gl_copyscreen(3).
The idea is that you draw your picture in
gc and copy it to the screen by
consecutive
gl_copyscreen(3) calls. Each of these will choose a free
buffer in the screen and adjust the display start accourdingly.
The current context must by the VGA when
gl_copyscreen(3) is called in
this situation.
SEE ALSO¶
svgalib(7),
vgagl(7),
svgalib.conf(5),
threedkit(7),
testgl(1),
plane(1),
wrapdemo(1),
gl_copybox(3),
gl_copyboxfromcontext(3),
gl_copyboxtocontext(3),
gl_copyscreen(3),
gl_getbox(3),
gl_putbox(3),
gl_setcontext(3),
gl_setcontextheight(3),
gl_setcontextvga(3),
gl_setcontextvgavirtual(3),
gl_setcontextvirtual(3),
gl_setcontextwidth(3).
AUTHOR¶
This manual page was edited by Michael Weller
<eowmob@exp-math.uni-essen.de>. The exact source of the referenced demo
as well as of the original documentation is unknown.
It is very likely that both are at least to some extent are due to Harm
Hanemaayer <H.Hanemaayer@inter.nl.net>.
Occasionally this might be wrong. I hereby asked to be excused by the original
author and will happily accept any additions or corrections to this first
version of the svgalib manual.
