glblur man page

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.


-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 visual.
Draw on a newly-created window. This is the default.
Draw on the root window.
-delay number
Per-frame delay, in microseconds. Default: 10000 (0.01 seconds.).
-blursize number
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.
-spin [XYZ]
Around which axes should the object spin?
Display the current frame rate, CPU load, and polygon count.


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.

See Also

X(1), xscreensaver(1)


Jamie Zawinski, with inspiration from a tutorial by Dario Corno.


5.36-3.fc26 (21-Oct-2016) X Version 11 XScreenSaver manual