bg_test - test the background mode of svgalib
Tests the enhanced support of recent svgalibs to draw while switched to the
background. Draws a small centered white box then waits until you switch to
another vc. Draws some outer box frame around it while
which you can see when you switch back to it. For obvious reasons, your
version of svgalib must have BACKGROUND
support enabled (which is the
default as of this writing). When finished, press any key to end
The demo uses a G320x200x256
mode or the one you set with
If you specify the linear
parameter the demo will use vgagl
(3) to test linear mode in background.
This demo is part of svgalib and can be found in the demos/
of the original svgalib distribution. However, it is not installed in the
system by default, s.t. it is unclear where you can find it if your svgalib
was installed by some linux distribution. Even then, when you have the demo on
your system, you probably won't have the sources s.t. it is only of limited
use for you.
In case of any such problem, simply get an svgalib distribution from the net.
You even don't need to install it. Just make
in the demos/
subdirecty. As of this writing, svgalib-1.2.12.tar.gz
is the latest
version and can be retrieved by ftp from sunsite.unc.edu
which will most probably be mirrored by a site
close to you.
This manual page was edited by Michael Weller
<email@example.com>. 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
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.