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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) 'rotat-
       ing' linux logo is shown	in the top left	quadrant  and  then  is	 drawn
       over  the whole screen.	Depending on internal development state	of sv-
       galib, it may use an accelerator	for some of the	functions.

       You can set a videomode to use by setting the environment variable  SV-
       GALIB_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/ subdirec-
       tory 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),	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), test-
       linear(6), vgatest(6), plane(6),	wrapdemo(6)

       This manual page	was edited by Michael Weller  <eowmob@exp-math.uni-es->.	 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 <>.

       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)


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