[Bug 33111] Graphical Artifacts in Diablo 3 on AMD Graphics

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=33111

--- Comment #16 from Matteo Bruni <matteo.mystral at gmail.com> ---
(In reply to Adam Bolte from comment #13)
> Created attachment 59907 [details]
> Mesa 17.4.0-devel (git-4c7af87fb9) screenshot 1
> 
> I'm still seeing similar issues in current Mesa builds. Tested on an AMD
> Fury X.

Interesting. It might not be the exact same issue but it does at least look
similar.

The original issue had to do with sampling from a depth texture also bound as
depth buffer (obviously with depth writes disabled, so no feedback loop).
That's generally supported by OpenGL drivers although the spec is intentionally
vague on the matter. Actually I noticed a SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST
query exposed by ARB_internalformat_query2 which seems to target exactly this
case.
Anyway, even if this technically might not be a driver "bug", it's a missing
feature.

Adam, I think you should report your issue to the Mesa bug tracker for the time
being and see what comes out of it.

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