[Bug 94043] Distorted graphics when running Battle.net app under Wine with Radeon driver

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94043

--- Comment #8 from Erik Brangs <erik.brangs at gmx.de> ---
Thanks for your help.

I don't think that it's a regression but I don't actually know for sure. I
don't have a working version of the stack that I could revert to. I can't try
reverting the Battle.net App because it's proprietary and automatically updates
to the latest version.

What I was able to find out is the following:
On the Wine side, bug #37347 ( https://bugs.winehq.org/show_bug.cgi?id=37347 )
describes the same problem that I'm having. Although the bug title mentions
only Intel, comment #16 by Peter Harris says that he has the problem with an
ATI Radeon X1600. As mentioned above, I've got a Radeon X1400. Later, somebody
from the Wine community reported Freedesktop bug #84651 (
https://bugs.freedesktop.org/show_bug.cgi?id=84651 ) which I linked above. A
fix for Intel drivers was produced and according to comment #18 at the
freedesktop bug it is in commit 0008d0e59eff365079323918508ffc87355a6bfd .
AFAIK the associated mesa version has long been released to distributions (at
least ones updating as often as Ubuntu, which I'm using). Wine closed the bug
and all its duplicates as resolved upstream. Unfortunately, there wasn't any
feedback on the Wine bug from Peter Harris or anybody else with a non-Intel
graphics cards. That's why I have the strong suspicion that a very similar
problem to the one in the Intel driver exists in whatever part is responsible
for this when using my graphics cards. I'm not sure if it's helpful but there
are some duplicates of the Wine bug (
https://bugs.winehq.org/show_bug.cgi?id=37786 ,
https://bugs.winehq.org/show_bug.cgi?id=37289 ) where Anastasius Focht mentions
that "All apps built with MSVC Qt5 SDK using ANGLE graphics layer were
affected." .

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