Provided by: xscreensaver-gl_5.15-2ubuntu1_i386 bug


       glmatrix - simulates the title sequence effect of the movie


       glmatrix  [-display  host:display.screen]  [-window] [-root] [-install]
       [-visual visual] [-delay usecs] [-speed ratio] [-density pct] [-no-fog]
       [-no-waves]   [-no-rotate]  [-binary]  [-hexadecimal]  [-dna]  [-clock]
       [-timefmt fmt] [-wireframe] [-fps]


       The glmatrix program draws the 3D "digital rain" effect, as seen in the
       title sequence of the Wachowski brothers' film, "The Matrix".

       Also  see  xmatrix(6x)  for  a  2D rendering of the similar effect that
       appeared on the computer monitors actually in the movie.


       glmatrix accepts the following options:

       -window Draw on a newly-created window.  This is the default.

       -root   Draw on the root window.

               Install a private colormap for the window.

       -visual visual
               Specify which visual to use.  Legal values are the  name  of  a
               visual  class,  or the id number (decimal or hex) of a specific

       -delay usecs
               The delay between frames of  the  animation,  in  microseconds:
               default 30000.

       -speed ratio
               How  fast the glyphs should move; default 1.0.  2.0 means twice
               as fast, 0.5 means half as fast.

       -density percentage
               The approximate percentage of the screen that should be  filled
               with characters at any given time.  Default 20%.

       -no-fog By  default, glyphs are dimmer the farther away they are.  This
               argument disables that.

               By default, waves of color roll down  the  columns  of  glyphs.
               This argument disables that.

               By  default, the scene slowly tilts and rotates.  This argument
               disables that.

       -binary Instead of displaying Matrix  glyphs,  only  display  ones  and

               Instead   of  displaying  Matrix  glyphs,  display  hexadecimal

       -dna    Instead of  displaying  Matrix  glyphs,  display  genetic  code
               (guanine, adenine, thymine, and cytosine.)

       -clock  Hide  a  clock  displaying  the  current  time somewhere in the

       -timefmt strftime-string
               How to format the clock  when  -clock  is  specified.   Default
               " %l%M%p ".

       -speed ratio
               Less than 1 for slower, greater than 1 for faster.  Default 1.

               Just draw boxes instead of textured characters.

       -fps    Display the current frame rate, CPU load, and polygon count.


       DISPLAY to get the default host and display number.

               to  get  the  name of a resource file that overrides the global
               resources stored in the RESOURCE_MANAGER property.


       xmatrix(6x), X(1), xscreensaver(1)


       Copyright © 1999-2003 by Jamie  Zawinski.   Permission  to  use,  copy,
       modify,  distribute,  and  sell this software and its documentation for
       any purpose is hereby granted without  fee,  provided  that  the  above
       copyright  notice  appear  in  all  copies and that both that copyright
       notice and this permission notice appear in  supporting  documentation.
       No  representations are made about the suitability of this software for
       any purpose.  It  is  provided  "as  is"  without  express  or  implied


       Jamie Zawinski <>, 8-Jun-2003.