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bg_test(6)                    Svgalib User Manual                   bg_test(6)

       bg_test - test the background mode of svgalib

       bg_test [linear]

       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  background,
       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 bg_test.

       The demo uses a G320x200x256 mode or the one you set with SVGALIB_DEFAULT_MODE.

       If you specify the linear parameter the demo will use vgagl(7) and vga_setlinearaddressing(3)  to  test  linear
       mode in background.

       This  demo is part of svgalib and can be found in the demos/ subdirectory 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   at   /pub/Linux/libs/graphics   and    at
       /pub/linux/sources/libs which will most probably be mirrored by a site close to you.

       svgalib(7), vgagl(7), libvga.config(5), vga_runinbackground(3), threed(6), accel(6), eventtest(6), forktest(6),
       fun(6), keytest(6), mousetest(6), scrolltest(6), speedtest(6), spin(6), testaccel(6), testgl(6), testlinear(6),
       vgatest(6), plane(6), wrapdemo(6)

       This  manual  page  was edited by Michael Weller <>. The exact source of the refer-
       enced 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 Hanemaayer <>.

       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 1.3.0                    8 April 1998                       bg_test(6)