xscreensaver(1)

NAME

glblur - 3D radial blur texture fields

SYNOPSIS

menger  [-display  host:display.screen]  [-visual  visual]
[-window] [-root] [-delay number] [-blursize number] [-nowander] [-no-spin] [-spin [XYZ]] [-wireframe] [-fps]

DESCRIPTION

This program draws a box and a few line segments, and gen
erates a radial blur outward from it. This creates flow
ing 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 hard
ware-accelerated texture support. It will hurt your
machine bad.

OPTIONS

-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.

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

default.

-root 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?

-no-spin

None.

-wireframe

Render in wireframe instead of solid.

-fps | -no-fps

Whether to show a frames-per-second display at the
bottom of the screen.

ENVIRONMENT

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_MAN
AGER property.

SEE ALSO

X(1), xscreensaver(1)

COPYRIGHT

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 warranty.

AUTHOR

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

X Version 11 XScreenSaver(1)