gl_setcontextvgavirtualSvgalib User Mangl_setcontextvgavirtual(3)

NAME
       gl_setcontextvgavirtual  -  set  the  context to a virtual
       mode

SYNOPSIS
       #include <vgagl.h>

       int gl_setcontextvgavirtual(int mode);

DESCRIPTION
       Allocate a virtual screen in system  memory  identical  to
       the graphics mode (as defined in vga_setmode(3)), and make
       that the current graphics context.

       The function returns 0 for success  and  non-zero  if  the
       mode is not supported by the hardware.

       The  only thing you can do with a planar (mode X-like) 256
       color mode is aligned gl_putbox, and use it  as  a  target
       for gl_copyscreen.

SEE ALSO
       svgalib(7),   vgagl(7),   svgalib(5),   threedkit(7),
       testgl(1),    currentcontext(3),    gl_allocatecontext(3),
       gl_copyboxfromcontext(3), gl_copyboxtocontext(3), gl_copy-
       screen(3), gl_freecontext(3), gl_getcontext(3), gl_setcon-
       text(3),    gl_setcontextheight(3),   gl_setcontextvga(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                          1