[compiz] Blur bugs and slowdown :(

David Reveman davidr at novell.com
Wed Feb 28 10:24:13 PST 2007

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On Thu, 2007-03-01 at 00:05 +0100, Vasek Potocek wrote:
> Hello!
> I don't expect myself to be of much use on this list, I have joined mainly to see how it all proceeds...
> but I have experienced the same problem as Mr. Bellegarde. I noticed the artifacts copy some area of screen underneath 
> it. It looks like twice enlarged with the center in bottom-left corner of screen. You can see what I'm talking about here:
> http://kfe.fjfi.cvut.cz/~potocek/work/blur-problem.png
> Of course, it happens only with 4xBilinear, too. Yes, and I can't see GL_ARB_texture_non_power_of_two in glxinfo. I'm 
> using nVidia driver v. 9746 on a FX5200.
> I hope this could be a bit helpful.
> Vasek
> >> I now use blur plugin thanx to window matching feature, thanx David ;)
> >>
> >> I have some bugs:
> >> http://hibbert.univ-lille3.fr/~cbellegarde/blur_4xbilinear_bug.png
> >>
> >> Here, i have some artefacts bugs with 4xbilinear. This blur mode is fast! May 
> >> be a Nvidia drivers bug...
> > 

Thanks to both of you for your feedback. I found two issues in the
4xbilinear code that likely caused the drawing artifacts. Please check
with the latest code and let me know if it's still causing issues.

- David

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