[Mesa-dev] [Bug 102390] centroid interpolation causes broken attribute values

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102390

            Bug ID: 102390
           Summary: centroid interpolation causes broken attribute values
           Product: Mesa
           Version: git
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/radeon
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: timon37 at lavabit.com
        QA Contact: mesa-dev at lists.freedesktop.org

If I add the the centroid interpolation decoration to any attribute:
- the values will be mostly broken (maybe just the first vertex in each
triangle is ok? hard to tell)
- and there will be block-like screen-space artifacts flickering all over the
geometry

I can't provide a screenshot unfortunately.
My GPU: [AMD/ATI] Bonaire XTX [Radeon R7 260X/360] PCI ID 1002:6658
Running with the amdgpu kernel module, linux 4.12.8.

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