gl_setcontextvga - set the context to the physical screen
int gl_setcontextvga(int mode);
Set the graphics context to the physical screen of a vga mode (as
defined in vga_setmode(3)). The mode must be set with vga_setmode(3)
prior to using any of the drawing functions. vgagl does not take care
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.
In all of the svga modes this program makes a description of the vga
mode available to the vgagl functions. The 256 color svgamodes are
handled properly by this program.
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_line(3), gl_getcontext(3), gl_setcontext(3), gl_setcontextheight(3),
This manual page was edited by Michael Weller <email@example.com-
essen.de>. The exact source of the referenced demo as well as of the
original documentation is unknown. This page was modified by Don
It is very likely that both are at least to some extent are due to Harm
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.