[Mesa-dev] [Bug 111125] [RADV] Graphic glitches regression in The Witcher 3 with DXVK on AMD Radeon HD7850

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111125

            Bug ID: 111125
           Summary: [RADV] Graphic glitches regression in The Witcher 3
                    with DXVK on AMD Radeon HD7850
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/radeon
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: zefkerrigan at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

Created attachment 144784
  --> https://bugs.freedesktop.org/attachment.cgi?id=144784&action=edit
These red spots very quickly run all over the body and on the hat and the blue
spots on Geralt.

A regression appeared on Mesa, as a result of which in Witcher 3, on my model,
the distortion of graphics on individual elements, which now look in
psychedelic colors. That is, before this was not.
And when I installed AMDVLK - everything looks and works fine on it. These red
spots very quickly run all over the body and on the hat, so it looks as if the
peasant has a red back all over. And almost the same applies to the blue spots
on Geralt, but spots on it run only along the edges. There was no such problem
with Mesa 18.3 + LLVM 8.0.0, but it definitely happens with Mesa 19.1 and
Mesa-git. I also tried LLVM-git, but it did not help. I'm not sure if this
happens to Mesa 19.0, because I did not try to run The Witcher 3 when Mesa 19.0
was in the Arch Linux stable repository. Please tell me if you need any
additional information or any logs. I use the usual Wine Staging from Arch
Linux repositories. 

In addition, I also tried Mesa with ACO shader compiler and with it, these
glitches do not happen, but then the animation of vegetation is exhausted and
instead of it the vegetation simply jerks, instantly switching to its extreme
positions of bends, instead of smooth animation of bending of vegetation. And
also, ACO only works if Mesa is compiled with LLVM 8, but if I compiled Mesa
(ACO  version) with LLVM-git (9), then the GPU hangs. The GPU hang does not
happen in any case if I use the regular version of Mesa without ACO.

Thanks you.

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