1testgl(6)                     Svgalib User Manual                    testgl(6)
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NAME

6       testgl - test the vgagl library
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SYNOPSIS

9       testgl
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DESCRIPTION

13       Demo  program for vgagl(7) framebuffer library. Runs in any mode preset
14       from the environment.
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16       First draws pixels in random locations, then random boxes, then  random
17       lines and finally some bit image in random locations (all just over the
18       previous drawings).
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20       Then the test is repeated clipping  the  screen  output  to  a  smaller
21       screen  portion  (using a vgagl(7) function). Finally a (lousy) 'rotat‐
22       ing' linux logo is shown in the top left quadrant  and  then  is  drawn
23       over  the  whole  screen.   Depending  on internal development state of
24       svgalib, it may use an accelerator for some of the functions.
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26       You can set a videomode to use  by  setting  the  environment  variable
27       SVGALIB_DEFAULT_MODE  to  a number (see vgatest for a list) or a string
28       like G0x1x2 where you replace 0 with desired x resolution, 1  with  the
29       desired  y  rez,  and  2 with the desired number of colors (2, 16, 256,
30       32K, 64K, 16M, 16M4). Again, only certain choices  are  available,  see
31       vgatest for a list.
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33       In case nothing is selected, G320x200x256 is choosen.
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35       This  demo  is part of svgalib and can be found in the demos/ subdirec‐
36       tory of the original svgalib distribution. However, it is not installed
37       in  the  system by default, s.t. it is unclear where you can find it if
38       your svgalib was installed by some linux distribution. Even then,  when
39       you  have  the demo on your system, you probably won't have the sources
40       s.t. it is only of limited use for you.
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42       In case of any such problem, simply get an  svgalib  distribution  from
43       the  net.  You  even  don't need to install it. Just make in the demos/
44       subdirecty. As of this writing,  svgalib-1.2.12.tar.gz  is  the  latest
45       version   and   can   be  retrieved  by  ftp  from  sunsite.unc.edu  at
46       /pub/Linux/libs/graphics and tsx-11.mit.edu at  /pub/linux/sources/libs
47       which will most probably be mirrored by a site close to you.
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SEE ALSO

51       svgalib(7),    vgagl(7),    libvga.config(5),    threed(6),   accel(6),
52       bg_test(6),    eventtest(6),    forktest(6),    fun(6),     keytest(6),
53       mousetest(6), scrolltest(6), speedtest(6), spin(6), testaccel(6), test‐
54       linear(6), vgatest(6), plane(6), wrapdemo(6)
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AUTHOR

58       This manual page was edited  by  Michael  Weller  <eowmob@exp-math.uni-
59       essen.de>.  The  exact  source of the referenced demo as well as of the
60       original documentation is unknown.
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62       It is very likely that both are at least to some extent are due to Harm
63       Hanemaayer <H.Hanemaayer@inter.nl.net>.
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65       Occasionally  this  might be wrong. I hereby asked to be excused by the
66       original author and will happily accept any additions or corrections to
67       this first version of the svgalib manual.
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71Svgalib 1.3.0                    8 April 1998                        testgl(6)
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