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Man Pages


Manual Reference Pages  -  GL_ENABLEPAGEFLIPPING (3)

NAME

gl_enablepageflipping - enables automatic page flipping

CONTENTS

Synopsis
Description
See Also
Author

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.

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Svgalib (>= 1.2.11) GL_ENABLEPAGEFLIPPING (3) 2 Aug 1997

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