Command Section
testlinear(6)                 Svgalib User Manual                testlinear(6)

       testlinear, lineart - test a linear frame buffer


       Program to test linear addressing on Cirrus cards and on Mach32 (and
       other cards which may 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 some direct hardware access is then made for highspeed
       screen access.  Except for the last (Cirrus only) test no speeds are
       printed, but you are welcome to use 'time' to measure it. The program
       draws 714400 one byte pixels plus a forced 1s delay and various rand()
       calls for the pixels.

       The testlinear demo needs a few presses of <Return> after each minimal
       demo step. Even when it does not prompt for it. When it appears to be
       stuck, just press <Return>.

       The lineart demo is the same, but it accepts a command line with an
       arbitrary number of modes.  The modes may be either mode numbers or
       names, or both.  For example,

       lineart 11 17 G800x600x32k 22

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

       This demo is part of svgalib and can be found in the demos/
       subdirectory 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),
       testgl(6), vgatest(6), plane(6), wrapdemo(6)

       This manual page was edited by Michael Weller <[email protected]>. 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 <[email protected]>.

       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 (>= 1.2.11)              29 July 1997                    testlinear(6)
Command Section