72 lines
1.8 KiB
Groff
72 lines
1.8 KiB
Groff
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.TH gl_enablepageflipping 3 "2 Aug 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
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.SH NAME
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gl_enablepageflipping \- enables automatic page flipping
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.SH SYNOPSIS
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.B #include <vgagl.h>
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.BI "int gl_enablepageflipping(GraphicsContext *" gc );
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.SH DESCRIPTION
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Enable page flipping or triple buffering in
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.BR gl_copyscreen (3)
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if the physical context
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.I gc
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can do it.
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Returns 3 if triple
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buffering will be used, 2 for page flipping, 0 if page
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flipping is not possible (due to video memory/mode
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limitations).
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When pageflipping is enabled, the
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.BR gl_screenoffset (3)
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is ignored in
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.BR gl_copyscreen (3).
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The idea is that you draw your picture in
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.I gc
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and copy it to the screen by consecutive
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.BR gl_copyscreen (3)
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calls. Each of these will choose a free buffer in the screen and
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adjust the display start accourdingly.
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The current context must by the VGA when
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.BR gl_copyscreen (3)
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is called in this situation.
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.SH SEE ALSO
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.BR svgalib (7),
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.BR vgagl (7),
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.BR svgalib.conf (5),
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.BR threedkit (7),
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.BR testgl (1),
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.BR plane (1),
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.BR wrapdemo (1),
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.BR gl_copybox (3),
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.BR gl_copyboxfromcontext (3),
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.BR gl_copyboxtocontext (3),
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.BR gl_copyscreen (3),
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.BR gl_getbox (3),
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.BR gl_putbox (3),
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.BR gl_setcontext (3),
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.BR gl_setcontextheight (3),
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.BR gl_setcontextvga (3),
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.BR gl_setcontextvgavirtual (3),
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.BR gl_setcontextvirtual (3),
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.BR gl_setcontextwidth (3).
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.SH AUTHOR
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This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The
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exact source of the referenced demo as well as of the original documentation is
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unknown.
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It is very likely that both are at least to some extent are due to
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Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
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Occasionally this might be wrong. I hereby
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asked to be excused by the original author and will happily accept any additions or corrections
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to this first version of the svgalib manual.
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