56 lines
1.5 KiB
Groff
56 lines
1.5 KiB
Groff
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.TH gl_setcontextvgavirtual 3 "2 Aug 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
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.SH NAME
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gl_setcontextvgavirtual \- set the context to a virtual mode
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.SH SYNOPSIS
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.B #include <vgagl.h>
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.BI "int gl_setcontextvgavirtual(int " mode );
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.SH DESCRIPTION
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Allocate a virtual screen in system memory identical to
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the graphics mode (as defined in
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.BR vga_setmode (3)),
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and make that the current graphics context.
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The function returns 0 for success and non-zero if the mode is not supported by the
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hardware.
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The only thing you can do with a planar (mode X-like)
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256 color mode is aligned
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.BR gl_putbox ,
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and use it as a target for
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.BR gl_copyscreen .
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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 currentcontext (3),
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.BR gl_allocatecontext (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_freecontext (3),
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.BR gl_getcontext (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_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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