plan9 man page for gl_setcontextvga

gl_setcontextvga(3)						Svgalib User Manual					       gl_setcontextvga(3)

NAME

       gl_setcontextvga - set the context to the physical screen

SYNOPSIS

       #include <vgagl.h>

       int gl_setcontextvga(int mode);

DESCRIPTION

       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 of that.

       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.

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_line(3),  gl_getcontext(3),  gl_setcontext(3),   gl_setcontextheight(3),
       gl_setcontextvgavirtual(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.  This page was modified by Don Secrest <secrest@uiuc.edu>.

       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)						    21 Aug 1999 					       gl_setcontextvga(3)