[Mesa-dev] [Bug 108611] radv: LLVM 8.0 breaks lighting in Mass Effect Andromeda

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108611

            Bug ID: 108611
           Summary: radv: LLVM 8.0 breaks lighting in Mass Effect
                    Andromeda
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/radeon
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: philip.rebohle at tu-dortmund.de
        QA Contact: mesa-dev at lists.freedesktop.org

Hello,

as stated in the title, when building mesa (both latest -git and 18.2.3)
against LLVM 8, Lighting in Mass Effect Andromeda is broken; there are blocky
artifacts. Applying https://reviews.llvm.org/D53359 does not solve the issue.

This renderdoc capture shows the problem, recorded with Renderdoc 1.1 (stable)
on Polaris:
https://mega.nz/#!4Hwm0KTQ!lT7cqh_h04ZEIRQ_VoTXw8J3PXzUc0RnxRxtwUe68sU

With LLVM 7, everything renders correctly.

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