97 lines
2.9 KiB
Groff
97 lines
2.9 KiB
Groff
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.TH testlinear 6 "29 July 1997" "Svgalib (>= 1.2.11)" "Svgalib User Manual"
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.SH NAME
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testlinear, lineart \- test a linear frame buffer
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.SH SYNOPSIS
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.B testlinear
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.SH DESCRIPTION
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Program to test linear addressing on Cirrus cards and on Mach32 (and other cards which
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may support it).
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Selects 640x480x256 and tries to enable a linear frame buffer
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(its virtual address is printed). Fills the screen in some color,
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then draws pixels in random positions.
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For Cirrus cards some
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direct hardware access is then made for highspeed screen access.
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Except for the last (Cirrus only) test no speeds are printed, but
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you are welcome to use 'time' to measure it. The program draws
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714400 one byte pixels plus a forced 1s delay and various rand()
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calls for the pixels.
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The
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.B testlinear
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demo needs a few presses of
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.B <Return>
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after each
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minimal demo step. Even when it does not prompt for it. When it
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appears to be stuck, just press
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.BR <Return> .
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The
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.B lineart
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demo is the same, but it accepts a command line with an arbitrary
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number of modes. The modes may be either mode numbers or names, or
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both. For example,
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.I lineart 11 17 "G800x600x32k" 22
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will give a display of mode 11. If a key is pressed mode 17 will
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appear, followed by mode 20 and 22 as succesive keys are pressed.
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This demo is part of svgalib and can be found in the
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.I demos/
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subdirectory of the original svgalib distribution. However, it is not installed in the system
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by default, s.t. it is unclear where you can find it if your svgalib was installed by some
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linux distribution. Even then, when you have the demo on your system, you probably won't have
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the sources s.t. it is only of limited use for you.
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In case of any such problem, simply get an svgalib distribution from the net. You even
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don't need to install it. Just
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.B make
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in the
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.I demos/
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subdirecty. As of this writing,
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.I svgalib-1.2.12.tar.gz
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is the latest version and can be retrieved by ftp from
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.IR "sunsite.unc.edu" " at " "/pub/Linux/libs/graphics"
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and
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.IR "tsx-11.mit.edu" " at " "/pub/linux/sources/libs"
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which will most probably be mirrored by a site close to you.
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.SH SEE ALSO
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.BR svgalib (7),
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.BR vgagl (7),
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.BR libvga.config (5),
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.BR threed (6),
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.BR accel (6),
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.BR bg_test (6),
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.BR eventtest (6),
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.BR forktest (6),
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.BR fun (6),
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.BR keytest (6),
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.BR mousetest (6),
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.BR scrolltest (6),
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.BR speedtest (6),
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.BR spin (6),
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.BR testaccel (6),
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.BR testgl (6),
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.BR vgatest (6),
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.BR plane (6),
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.BR wrapdemo (6)
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.SH AUTHOR
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This manual page was edited by Michael Weller <eowmob@exp-math.uni-essen.de>. The
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exact source of the referenced demo as well as of the original documentation is
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unknown.
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It is very likely that both are at least to some extent are due to
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Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
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Occasionally this might be wrong. I hereby
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asked to be excused by the original author and will happily accept any additions or corrections
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to this first version of the svgalib manual.
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