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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 us- ing 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 sup- ported 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), currentcon- text(3), gl_allocatecontext(3), gl_copyboxfromcontext(3), gl_copyboxtocon- text(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-es- sen.de>. The exact source of the referenced demo as well as of the original documentation is unknown. This page was modified by Don Secrest <se- crest@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 orig- inal 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)
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