testgl(6)              Svgalib User Manual              testgl(6)

       testgl - test the vgagl library


       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 distri-
       bution 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 mir-
       rored by a site close to you.

       svgalib(7),   vgagl(7),    libvga(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)

       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.

       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.

Svgalib 1.3.0              8 April 1998                         1