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
15       radial 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 | -no-fps
52               Whether  to  show  a frames-per-second display at the bottom of
53               the screen.
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ENVIRONMENT

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

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

75       Jamie Zawinski, with inspiration from a tutorial by Dario Corno.
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79X Version 11                 5.05-3 (06-Apr-2008)                   glblur(6x)
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