1glblur(6x)                    XScreenSaver manual                   glblur(6x)
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NAME

6       glblur - 3D radial blur texture fields
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SYNOPSIS

9       glblur   [-display   host:display.screen]  [-visual  visual]  [-window]
10       [-root] [-delay  number]  [-blursize  number]  [-no-wander]  [-no-spin]
11       [-spin [XYZ]] [-fps]
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DESCRIPTION

14       This  program  draws a box and a few line segments, and generates a ra‐
15       dial blur outward from it.  This creates flowing field effects.
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17       This is done by rendering the scene into a small texture, then  repeat‐
18       edly  rendering increasingly-enlarged and increasingly-transparent ver‐
19       sions of that texture onto the  frame  buffer.   As  such,  it's  quite
20       graphics  intensive:  don't bother trying to run this if you don't have
21       hardware-accelerated texture support.  It will hurt your machine bad.
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OPTIONS

24       -visual visual
25               Specify which visual to use.  Legal values are the  name  of  a
26               visual  class,  or the id number (decimal or hex) of a specific
27               visual.
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29       -window Draw on a newly-created window.  This is the default.
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31       -root   Draw on the root window.
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33       -delay number
34               Per-frame delay, in microseconds.  Default:  10000  (0.01  sec‐
35               onds.).
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37       -blursize number
38               How  many  copies  of the scene should be laid down to make the
39               vapor trail.  Default:  15.   Larger  numbers  create  smoother
40               fields, but are slower.
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42       -wander | -no-wander
43               Whether the object should wander around the screen.
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45       -spin [XYZ]
46               Around which axes should the object spin?
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48       -no-spin
49               None.
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51       -fps    Display the current frame rate, CPU load, and polygon count.
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ENVIRONMENT

54       DISPLAY to get the default host and display number.
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56       XENVIRONMENT
57               to  get  the  name of a resource file that overrides the global
58               resources stored in the RESOURCE_MANAGER property.
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SEE ALSO

61       X(1), xscreensaver(1)
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64       Copyright © 2002 by Jamie Zawinski.  Permission to use,  copy,  modify,
65       distribute,  and  sell this software and its documentation for any pur‐
66       pose is hereby granted without fee, provided that the  above  copyright
67       notice  appear  in  all  copies and that both that copyright notice and
68       this permission notice appear in supporting documentation.   No  repre‐
69       sentations are made about the suitability of this software for any pur‐
70       pose.  It is provided "as is" without express or implied warranty.
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AUTHOR

73       Jamie Zawinski, with inspiration from a tutorial by Dario Corno.
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77X Version 11               6.00-4.fc34 (05-May-2021)                glblur(6x)
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