https://bugs.freedesktop.org/show_bug.cgi?id=110811
Bug ID: 110811
Summary: radv: Assassin's Creed Unity glitches when compiled
with recent LLVM 9 (DXVK)
Product: Mesa
Version: git
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/Vulkan/radeon
Assignee: mesa-dev@lists.freedesktop.org
Reporter: asheldo...@gmail.com
QA Contact: mesa-dev@lists.freedesktop.org
When Mesa is compiled with a recent version of LLVM 9 (anything newer than
around early May), Assassin's Creed: Unity exhibits graphical glitches when
using RADV and running the game with Wine + DXVK.
The problem does not exist when compiling Mesa against LLVM 8, nor does it
exist when using AMDVLK. Additionally, older Mesa versions such as 19.0.x and
19.1.x exhibit the bug when compiled against LLVM 9.
The problem did not exist with older revisions of LLVM 9. I can run a
regression test if needed, but it could take a while given the size of LLVM.
I've also made a capture with RenderDoc and a Vega 56 GPU, which I've attached
(for the record, the bug also exists with the RX550 card).
Thanks
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