extrusion - various rotating extruded shapes.

       This screensaver was created by David Konerding from the samples that come with the GL Extrusion  library
       by Linas Vepstas.

X Version 11                                   6.08 (10-Oct-2023)                                  extrusion(6x)

       Copyright  © 2002 by Linas Vepstas and David Konerding.  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 warranty.

       Draws various rotating extruded shapes that twist around, lengthen, and turn inside out.

DISPLAY to get the default host and display number.

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

       XSCREENSAVER_WINDOW
               The window ID to use with --root.

       extrusion - various rotating extruded shapes.

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

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

       --root  Draw on the root window.

       --window-idnumber
               Draw on the specified window.

       --delaynumber
               Per-frame delay, in microseconds.  Default: 10000 (0.01 seconds.).

       --namewhich
               Which  object  to  draw.   Choices  are:  helix2,  helix3,  helix4, joinoffset, screw, taper, and
               twistoid.

       --light|--no-light
               Whether to light the scene, or use flat coloring.

       --bitmapfile
               The texture map to use.

       --wireframe
               Render in wireframe instead of solid.

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

X(1), xscreensaver(1)

extrusion  [--display  host:display.screen]  [--visual  visual]  [--window] [--root] [--window-id number]
       [--delay number] [--name which] [--no-light] [--wireframe] [--fps]