MAN page from Fedora 16 svgalib-1.9.25-9.fc15.i686.rpm

testlinear

Section: Svgalib User Manual (6)
Updated: 29 July 1997
Index

NAME

testlinear, lineart - test a linear frame buffer

SYNOPSIS

testlinear

DESCRIPTION

Program to test linear addressing on Cirrus cards and on Mach32 (and other cards whichmay support it).

Selects 640x480x256 and tries to enable a linear frame buffer(its virtual address is printed). Fills the screen in some color,then draws pixels in random positions.

For Cirrus cards somedirect hardware access is then made for highspeed screen access.Except for the last (Cirrus only) test no speeds are printed, butyou are welcome to use 'time' to measure it. The program draws714400 one byte pixels plus a forced 1s delay and various rand()calls for the pixels.

Thetestlineardemo needs a few presses of<Return>after eachminimal demo step. Even when it does not prompt for it. When itappears to be stuck, just press<Return>.

Thelineartdemo is the same, but it accepts a command line with an arbitrarynumber of modes. The modes may be either mode numbers or names, orboth. For example,

lineart 11 17 G800x600x32k 22

will give a display of mode 11. If a key is pressed mode 17 willappear, followed by mode 20 and 22 as succesive keys are pressed.

This demo is part of svgalib and can be found in thedemos/subdirectory of the original svgalib distribution. However, it is not installed in the systemby default, s.t. it is unclear where you can find it if your svgalib was installed by somelinux distribution. Even then, when you have the demo on your system, you probably won't havethe 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 evendon't need to install it. Justmakein thedemos/subdirecty. As of this writing,svgalib-1.2.12.tar.gzis the latest version and can be retrieved by ftp fromsunsite.unc.edu at /pub/Linux/libs/graphicsandtsx-11.mit.edu at /pub/linux/sources/libswhich will most probably be mirrored by a site close to you.

AUTHOR

This manual page was edited by Michael Weller <eowmobAATTexp-math.uni-essen.de>. Theexact source of the referenced demo as well as of the original documentation isunknown.

It is very likely that both are at least to some extent are due toHarm Hanemaayer <H.HanemaayerAATTinter.nl.net>.

Occasionally this might be wrong. I herebyasked to be excused by the original author and will happily accept any additions or correctionsto this first version of the svgalib manual.

This document was created byman2html,using the manual pages.