Man

Command Section
testgl(6)                     Svgalib User Manual                    testgl(6)

NAME
       testgl - test the vgagl library

SYNOPSIS
       testgl

DESCRIPTION
       Demo program for vgagl(7) framebuffer library. Runs in any mode preset
       from the environment.

       First draws pixels in random locations, then random boxes, then random
       lines and finally some bit image in random locations (all just over the
       previous drawings).

       Then the test is repeated clipping the screen output to a smaller
       screen portion (using a vgagl(7) function). Finally a (lousy)
       'rotating' linux logo is shown in the top left quadrant and then is
       drawn over the whole screen.  Depending on internal development state
       of svgalib, it may use an accelerator for some of the functions.

       You can set a videomode to use by setting the environment variable
       SVGALIB_DEFAULT_MODE to a number (see vgatest for a list) or a string
       like G0x1x2 where you replace 0 with desired x resolution, 1 with the
       desired y rez, and 2 with the desired number of colors (2, 16, 256,
       32K, 64K, 16M, 16M4). Again, only certain choices are available, see
       vgatest for a list.

       In case nothing is selected, G320x200x256 is choosen.

       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 sunsite.unc.edu at
       /pub/Linux/libs/graphics and tsx-11.mit.edu at /pub/linux/sources/libs
       which will most probably be mirrored by a site close to you.

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

AUTHOR
       This manual page was edited by Michael Weller <[email protected]
       essen.de>. 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
       Hanemaayer <[email protected]>.

       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                        testgl(6)
Command Section