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Old 02-23-2005, 11:07 PM   #1
memo007
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The New Gl Matrix Desktop Wallpaper??


I've seen a while ago a opengl wallpaper screensaver thing for kde on the TV.
Its the matrix live running the background as the WALLPAPER?
You guys know anything about it? The name where to get it ???
 
Old 02-24-2005, 01:37 AM   #2
Shade
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xscreensaver (already installed, probably) can run as the root image. It's incredibly resource intensive (aka a waste), but I suppose it does look pretty cool

You should be able to run any of the screensavers in /usr/lib/xscreensaver/ directory with the option -root
and have it do exactly what you want

--Shade
 
Old 02-24-2005, 01:58 AM   #3
Shade
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The exact command would be:

Code:
/usr/lib/xscreensaver/glmatrix -root
That's assuming it's installed in the same location as on my machine.

Code:
man glmatrix
man xmatrix
Will give you full details on each version of it.

--Shade
 
Old 02-24-2005, 04:27 AM   #4
cs-cam
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I don't know about incredibly resource intensive, I just did a test because I didn't know you could do this and glmatrix didn't go past 4% CPU usage.
 
Old 02-24-2005, 04:52 AM   #5
oneandoneis2
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I use it for a Matrix-themed login screen (when I can be bothered with it)

Screenshot at http://linux.oneandoneis2.org/xdmatrix.png - obviously it's hard to do a dynamic screen justice with a static picture, but you get the idea. . .
 
Old 02-24-2005, 07:24 AM   #6
trickykid
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Moved: Not a Linux technical question, more suitable in General.
 
Old 02-25-2005, 03:46 AM   #7
Shade
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Well, at 4% cpu usage, that would put it infinitely more intensive than a static picture

--Shade
 
Old 02-25-2005, 05:04 PM   #8
cs-cam
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Very true!
 
Old 02-25-2005, 05:16 PM   #9
IsaacKuo
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To be pedantic, not true. Even a "static picture" consumes some CPU time. Whenever you move or resize a window, or minimize or shade, it's that CPU which has to go through the effort of redrawing the wallpaper. This can actually take some serious time on a slower computer with a modest amount of RAM (i.e. the image has been offloaded to swap).

Also, it takes quite a bit of CPU and disk spinning to do a high resolution wallpaper background switch. This causes a definite hit on responsiveness--enough to temporarily disrupt DVD or video clip playback on my workstation.

A constant 4% CPU drain is preferable to an intermittent 50% CPU drain, when it comes to the user's experience. In particular, the timing of this drop in software responsiveness is important. When windows are being moved/resized/closed is when the user is actually "doing something", and this is the worst time for the CPU to be taxed with a slow background refresh.

Surely, you've experience what I'm talking about--you're ready to close one app and go on to another. But when you close your current app the disk starts making busy-busy sounds and the wallpaper background slowly gets redrawn to fill the void...
 
Old 02-25-2005, 09:28 PM   #10
minm
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hmm, typing /usr/lib/xscreensaver/glmatrix -root in my console doesn't chage the background to the screensaver

does anyone know why?
 
Old 02-26-2005, 02:22 AM   #11
Shade
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If you're running gnome or kde, then it's controlling the desktop. You need to kill whatever app is drawing the wallpaper -- nautilus in gnome, not sure what it would be in KDE. There may be another way to do it, but I'm not aware off the top of my head.

--Shade
 
  


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