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testaccel(6)		      Svgalib User Manual		  testaccel(6)

NAME
       testaccel - test	the old	style blitter functions	and vga_ext_set()

SYNOPSIS
       testaccel [ -nowait ] [ { all | videomodes... } ]

DESCRIPTION
       Program	to test	the old	blitter	functions in a screen mode. Checks the
       8-bit wide color	lookup tables on Mach32's with type 2  DACs  as	 well.
       [I  think  '6bpp' and '8bpp' are	silly names for	the 8-bit LUT thing --
       bpp is bits per pixel, in the framebuffer - HH :-)]

       After each test it waits	for a key press	except when -nowait is given.

       You can specify names of	modes to test on the command line  or  specify
       all to loop over	all svgalib modes.

       The  program  will run on any card, however, most of the	tests can only
       be performed on a Mach32.

       The subtest are in turn:

       1 -    For each 256 color mode the program sees if it  is  possible  to
	      enable  a	 special  mode with 8 bits per color in	the RGB	lookup
	      table. If	so, for	example	256 different shades of	 blue  can  be
	      implemented.  The	program	displays as much blue shades as	possi-
	      ble in a shade from dark (left) to bright	(right)	and some  text
	      in  an  opposite	direction  on  top of it. In case 56 different
	      shades are supported, the	screen is divided and shows a rough 64
	      shades  scale  (ordinary vga) on top and the smooth shade	below.
	      Right now	256 different shades are only  possible	 on  a	Mach32
	      with RAMDAC of type 2.  For modes	with few pixels	only, the pro-
	      gram might fail to print the text	properly and  will  'wrap'  it
	      around the screen	edges.

       2 -    Draws a bouncing 'linux' logo stopping after a fixed amount of 1
	      pixel steps. Uses	vga_bitblt(3) on the image plus	 a  one	 pixel
	      outline  in  border  color  to move the pixel around the screen.
	      The Mach32 is very fast in this discipline.

       3 -    Draws filled rectangles using vga_fillblt(3).  At	first a	series
	      of  larger  to  smaller centered rectangles is drawn to fill the
	      screen.  For 256 or less color modes these will use  a  sequence
	      of  256  random  colors. For 32K or more color modes it will use
	      colors 0 up too, however,	you'll usually just  see  a  repeating
	      series  of  blues	 (limitations of monitor/human eye, the	blue's
	      differ not enough	for the	eye to see). Then a  bunch  of	random
	      boxes  in	 random	 places	 is drawn overwriting each other.  The
	      Mach32 is	very fast in this discipline.

       4 -    Draws small fish bitmaps and then	larger linux logos  in	random
	      positions	 using	vga_imageblt(3).  They just overlap each other
	      The Mach32 is poor in this discipline.  If  you  have  a	linear
	      frame  buffer  enabled, it is used instead to perform this func-
	      tion (even if the	program	does not use  a	 linear	 frame	buffer
	      otherwise).  Usually this	is twice as fast for Mach32.

       5 -    Use vga_hlinelistblt(3) o	do some	simple polygon fills: squares,
	      circles, diamonds	of random sizes, positions and colors.	Again,
	      the  Mach32  is very fast	in this	discipline, but	somehow	slowed
	      down by the imperfect prototype of  this	function.  Again,  the
	      polygons just overlap each other.

	      The  resp.  tests	 will only be performed	where supported	by the
	      hardware.	For Mach32 this	means only SVGA	256,  32K,  64K	 color
	      modes.   The  linear frame buffer	emulated vga_imageblt(3) works
	      for all SVGA modes though.

       The program prints the number of	pixels drawn  and  the	time  required
       plus  the  resulting rate of pixels per second. For Mach32 the rate de-
       pends on	the amount of screen accesses (2 per pixel move	 for  vga_bit-
       blt(3),	1  per	pixel move for vga_fillblt(3) and vga_hlinelistblt(3);
       also twice bytes	are affected for 32K, 64K color	modes).	On a non  VRAM
       card  you'll  also  note	 the effect of the memory access caused	by the
       generation of the video frames  (more  colors/rez/sync  rates  =>  less
       speed).	 Also,	higher modes draw more pixels per call,	thus less call
       and setup overhead.

       Here are	the rates for my card on an almost idle	486 EISA system	 which
       should be fairly	optimal	(2MB VRAM EISA Mach32) except maybe the	linear
       frame buffer emulated imageblt which might be faster on PCI card:

       Testing mode 1: G320x200x16...
       Dacwidth	test not applicable.
       Testing mode 2: G640x200x16...
       Dacwidth	test not applicable.
       Testing mode 3: G640x350x16...
       Dacwidth	test not applicable.
       Testing mode 4: G640x480x16...
       Dacwidth	test not applicable.
       Testing mode 5: G320x200x256...
       Warning:	Resolution too small, displayed	text is
       probably	scrambled.

       Has support for CLUT width 8 bit
       Testing mode 6: G320x240x256...
       Dacwidth	test not applicable.
       Testing mode 7: G320x400x256...
       Dacwidth	test not applicable.
       Testing mode 8: G360x480x256...
       Dacwidth	test not applicable.
       Testing mode 9: G640x480x2...
       Dacwidth	test not applicable.
       Testing mode 10:	G640x480x256...
       Has support for CLUT width 8 bit
       Has BitBlt: 176610000 Pixels in 6.49 seconds -> 27.21 Megapels
       Has FillBlt: 217884171 Pixels in	4.55 seconds ->	47.89 Megapels
       Has ImageBlt: 17085000 Pixels in	3.07 seconds ->	5.57 Megapels
       Has HlineLst: 20192124 Pixels in	0.57 seconds ->	35.42 Megapels
       Testing mode 11:	G800x600x256...
       Has support for CLUT width 8 bit
       Has BitBlt: 176610000 Pixels in 6.65 seconds -> 26.56 Megapels
       Has FillBlt: 343102613 Pixels in	6.23 seconds ->	55.07 Megapels
       Has ImageBlt: 17085000 Pixels in	3.06 seconds ->	5.58 Megapels
       Has HlineLst: 33166399 Pixels in	0.78 seconds ->	42.52 Megapels
       Testing mode 12:	G1024x768x256...
       Has support for CLUT width 8 bit
       Has BitBlt: 176610000 Pixels in 6.88 seconds -> 25.67 Megapels
       Has FillBlt: 603141286 Pixels in	9.78 seconds ->	61.67 Megapels
       Has ImageBlt: 17085000 Pixels in	3.07 seconds ->	5.57 Megapels
       Has HlineLst: 52958845 Pixels in	1.08 seconds ->	49.04 Megapels
       Testing mode 13:	G1280x1024x256...
       Has support for CLUT width 8 bit
       Has BitBlt: 176610000 Pixels in 7.10 seconds -> 24.87 Megapels
       Has FillBlt: 1063820849 Pixels in 16.16 seconds -> 65.83	Megapels
       Has ImageBlt: 17085000 Pixels in	3.07 seconds ->	5.57 Megapels
       Has HlineLst: 95798478 Pixels in	1.75 seconds ->	54.74 Megapels
       Testing mode 14:	G320x200x32K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 12.30 seconds ->	14.36 Megapels
       Has FillBlt: 41317334 Pixels in 3.61 seconds -> 11.45 Megapels
       Has ImageBlt: 17085000 Pixels in	5.93 seconds ->	2.88 Megapels
       Has HlineLst: 3411068 Pixels in 0.23 seconds -> 14.83 Megapels
       Testing mode 15:	G320x200x64K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 12.29 seconds ->	14.37 Megapels
       Has FillBlt: 42351016 Pixels in 4.12 seconds -> 10.28 Megapels
       Has ImageBlt: 17085000 Pixels in	5.93 seconds ->	2.88 Megapels
       Has HlineLst: 3561694 Pixels in 0.23 seconds -> 15.49 Megapels
       Testing mode 16:	G320x200x16M...
       Dacwidth	test not applicable.
       Has ImageBlt: 17085000 Pixels in	8.83 seconds ->	1.93 Megapels
       Testing mode 17:	G640x480x32K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 13.38 seconds ->	13.20 Megapels
       Has FillBlt: 217723964 Pixels in	7.95 seconds ->	27.39 Megapels
       Has ImageBlt: 17085000 Pixels in	5.94 seconds ->	2.88 Megapels
       Has HlineLst: 19579110 Pixels in	0.74 seconds ->	26.46 Megapels
       Testing mode 18:	G640x480x64K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 13.37 seconds ->	13.21 Megapels
       Has FillBlt: 221608034 Pixels in	8.28 seconds ->	26.76 Megapels
       Has ImageBlt: 17085000 Pixels in	5.93 seconds ->	2.88 Megapels
       Has HlineLst: 21048202 Pixels in	0.79 seconds ->	26.64 Megapels
       Testing mode 19:	G640x480x16M...
       Dacwidth	test not applicable.
       Has ImageBlt: 17085000 Pixels in	8.82 seconds ->	1.94 Megapels
       Testing mode 20:	G800x600x32K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 13.97 seconds ->	12.64 Megapels
       Has FillBlt: 357205415 Pixels in	12.22 seconds -> 29.23 Megapels
       Has ImageBlt: 17085000 Pixels in	5.92 seconds ->	2.89 Megapels
       Has HlineLst: 34391335 Pixels in	1.16 seconds ->	29.65 Megapels
       Testing mode 21:	G800x600x64K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 13.97 seconds ->	12.64 Megapels
       Has FillBlt: 348943970 Pixels in	11.87 seconds -> 29.40 Megapels
       Has ImageBlt: 17085000 Pixels in	5.93 seconds ->	2.88 Megapels
       Has HlineLst: 34510200 Pixels in	1.17 seconds ->	29.50 Megapels
       Testing mode 22:	G800x600x16M...
       Dacwidth	test not applicable.
       Has ImageBlt: 17085000 Pixels in	8.83 seconds ->	1.93 Megapels
       Testing mode 23:	G1024x768x32K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 14.60 seconds ->	12.10 Megapels
       Has FillBlt: 608000981 Pixels in	18.62 seconds -> 32.65 Megapels
       Has ImageBlt: 17085000 Pixels in	5.93 seconds ->	2.88 Megapels
       Has HlineLst: 53767429 Pixels in	1.72 seconds ->	31.26 Megapels
       Testing mode 24:	G1024x768x64K...
       Dacwidth	test not applicable.
       Has BitBlt: 176610000 Pixels in 14.60 seconds ->	12.10 Megapels
       Has FillBlt: 601666798 Pixels in	18.80 seconds -> 32.00 Megapels
       Has ImageBlt: 17085000 Pixels in	5.92 seconds ->	2.89 Megapels
       Has HlineLst: 52037798 Pixels in	1.67 seconds ->	31.16 Megapels
       Testing mode 32:	G720x348x2...
       Dacwidth	test not applicable.
       Testing mode 33:	G320x200x16M32...
       Dacwidth	test not applicable.
       Has ImageBlt: 17085000 Pixels in	11.60 seconds -> 1.47 Megapels
       Testing mode 34:	G640x480x16M32...
       Dacwidth	test not applicable.
       Has ImageBlt: 17085000 Pixels in	11.62 seconds -> 1.47 Megapels
       Testing mode 35:	G800x600x16M32...
       Dacwidth	test not applicable.
       Has ImageBlt: 17085000 Pixels in	11.62 seconds -> 1.47 Megapels

       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	  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), vga_ext_set(3),	vga_bitblt(3),
       vga_fillblt(3),	 vga_hlinelistblt(3),  vga_imageblt.3  threed(6),  ac-
       cel(6),	bg_test(6),  eventtest(6),  forktest(6),  fun(6),  keytest(6),
       mousetest(6), scrolltest(6), speedtest(6), spin(6), testgl(6), testlin-
       ear(6), vgatest(6), plane(6), wrapdemo(6)

AUTHOR
       This manual page	was edited by Michael Weller  <eowmob@exp-math.uni-es-
       sen.de>.	He also	wrote thise demo and it's documentation.

Svgalib	(>= 1.2.11)		 29 July 1997			  testaccel(6)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | AUTHOR

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