gl_enablepageflipping man page on Slackware
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gl_enablepageflipping(3) Svgalib User Manual gl_enablepageflipping(3)
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_set‐
contextvgavirtual(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.
Svgalib (>= 1.2.11) 2 Aug 1997 gl_enablepageflipping(3)
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