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.conf(5), threedkit(7), testgl(1), currentcontext(3), gl_allocatecontext(3),
       gl_copyboxfromcontext(3), gl_copyboxtocontext(3), gl_copyscreen(3), gl_freecontext(3),  gl_getcontext(3),
       gl_setcontext(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.