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RedHat 9 (Linux i386) - man page for glblur (redhat section 1)

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       glblur - 3D radial blur texture fields

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

       -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?


	       Render in wireframe instead of solid.

       -fps | -no-fps
	       Whether to show a frames-per-second display at the bottom of the screen.

       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.

       X(1), xscreensaver(1)

       Copyright  (C)  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.

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

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