.TH gl_setcontextvirtual 3 "2 Aug 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
.SH NAME
gl_setcontextvirtual \- define a virtual context

.SH SYNOPSIS
.B #include <vgagl.h>

.BI "void gl_setcontextvirtual(int " w ", int " h ", int " bpp ", int " bitspp ", void *" vbuf );

.SH DESCRIPTION
Define the current graphics context to have a width of
.I w
pixels, height
.IR h ", " bpp
bytes per pixel,
.I bitspp
significant
color bits per pixel (8, 15, 16 or 24), with the framebuffer
at
.IR vbuf .
A 4 bytes per pixel context, with 24 significant
color bits is also valid.

.SH SEE ALSO
.BR svgalib (7),
.BR vgagl (7),
.BR svgalib.conf (5),
.BR threedkit (7),
.BR testgl (1),
.BR currentcontext (3),
.BR gl_allocatecontext (3),
.BR gl_copyboxfromcontext (3),
.BR gl_copyboxtocontext (3),
.BR gl_copyscreen (3),
.BR gl_freecontext (3),
.BR gl_getcontext (3),
.BR gl_setcontext (3),
.BR gl_setcontextheight (3),
.BR gl_setcontextvga (3),
.BR gl_setcontextvgavirtual (3),
.BR gl_setcontextwidth (3).

.SH 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.