12-09-2011
methyl:
Ya know, after 18 years of this you'd think that I'd learn to live with some things?
It was an itch (almost-like the embedded terminal I 'had to have') that I thought I could scratch by flipping a bit or two.
Thank you for your help.
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LEARN ABOUT CENTOS
gl_enablepageflipping
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_copybox-
tocontext(3), gl_copyscreen(3), gl_getbox(3), gl_putbox(3), gl_setcontext(3), gl_setcontextheight(3), gl_setcontextvga(3), gl_setcontextv-
gavirtual(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)