[Bug 30007] Regression in r300g

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30007

--- Comment #29 from Fredrik Höglund <fredrik at kde.org> 2010-09-13 17:05:55 PDT ---
(In reply to comment #27)
> Are you sure that we have to change kwin?
> 
> For me, blur worked just fine on rv410 when using the old glsl compiler - it
> stopped working right after the merge of the new compiler.
> 
> Because of that, I wonder if it might just be a software (glsl2) issue. Or was
> there some sort of software fallback in the old compiler that is not available
> in the new one?

Well this discussion is only about the thumbnail issue now. The discussion
about the blur effect has been moved to bug 30152.

> Concerning the thumbnail issue: I think that thumbnails used to work with
> kernel 2.6.34 and stopped working when I updated to 2.6.35 (some time before
> the compiler merge). Was there any feature added to 2.6.35 that could cause
> this issue?

The only thing I can think of is if for some reason kwin decided not to use the
shader with 2.6.34. If the upgrade make additional GL extensions available it
could explain why the problem didn't show up before.

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