Provided by: xscreensaver-gl_5.08-0ubuntu5_i386
glblur - 3D radial blur texture fields
glblur [-display host:display.screen] [-visual visual] [-window]
[-root] [-delay number] [-blursize number] [-no-wander] [-no-spin]
[-spin [XYZ]] [-fps]
This program draws a box and a few line segments, and generates a
radial blur outward from it. This creates flowing field effects.
This is done by rendering the scene into a small texture, then
repeatedly rendering increasingly-enlarged and increasingly-transparent
versions of that texture onto the frame buffer. As such, it’s quite
graphics intensive: don’t bother trying to run this if you don’t have
hardware-accelerated texture support. It will hurt your machine bad.
Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
-window Draw on a newly-created window. This is the default.
-root Draw on the root window.
Per-frame delay, in microseconds. Default: 10000 (0.01
How many copies of the scene should be laid down to make the
vapor trail. Default: 15. Larger numbers create smoother
fields, but are slower.
-wander | -no-wander
Whether the object should wander around the screen.
Around which axes should the object spin?
-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.
Copyright © 2002 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, with inspiration from a tutorial by Dario Corno.