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Old 09-29-06, 01:27 PM   #1
MrMadPL
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Join Date: Sep 2006
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Lightbulb 9625 Blitter Slow ?

Hi,

I am wondering where is the problem:
a) when playing the video under mplayer with Beryl & Nvidia drivers 9625 the video is choppy
b) glxgears drops from 12000 to 3400 - but when I will double click the window bar - so the
window become shadeless - and thus it's drawing only on offscreen pix buffer the result
is back to 12000 !!!

this - and especially the b) leads to conclusion that the slowest part is compositing one.
But where is the fault - inside Beryl or Nvidia drivers ?

Any ideas ?
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Old 09-29-06, 01:45 PM   #2
netllama
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Default Re: 9625 Blitter Slow ?

a is a compositing bug. See:
http://www.nvnews.net/vbulletin/showthread.php?t=77309

b is expected behavior.
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Old 09-29-06, 01:53 PM   #3
MrMadPL
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Default Re: 9625 Blitter Slow ?

Thanks for answer,

but why b) is default behaviour - should compositing take so much time ?
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Old 09-29-06, 01:55 PM   #4
netllama
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Default Re: 9625 Blitter Slow ?

Yes, compositing takes more time, as everything is rendered off screen and then composited onto your desktop. Also, glxgears is not a useful benchmark.

-Lonni
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Old 09-29-06, 02:03 PM   #5
MrMadPL
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Default Re: 9625 Blitter Slow ?

Understood. Thanks a lot for answers.
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