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gl_setcontextvga

gl_setcontextvga

Section: Svgalib User Manual (3) Updated: 21 Aug 1999
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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.


 

Index

NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
AUTHOR

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Time: 21:47:04 GMT, April 16, 2011