[Bug 98777] GPU lockup in Guns of Icarus Online

[Bug 98777] GPU lockup in Guns of Icarus Online

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=98777

            Bug ID: 98777
           Summary: GPU lockup in Guns of Icarus Online
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: daniel@constexpr.org
        QA Contact: dri-devel@lists.freedesktop.org

Guns of Icarus Online consistently locks up my GPU with radeonsi while loading
a specific map.

Apitrace reproducing the GPU lockup:
 http://constexpr.org/tmp/GoIO-radeonsi.3.trace.xz (568 MiB)

GPU: R9 380X (tonga)
Kernel: 4.8.7-gentoo
Mesa: git-0c85d2f
LLVM: r287273

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[Bug 98777] GPU lockup in Guns of Icarus Online

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https://bugs.freedesktop.org/show_bug.cgi?id=98777

--- Comment #1 from Daniel Scharrer <daniel@constexpr.org> ---
Created attachment 128068
  --> https://bugs.freedesktop.org/attachment.cgi?id=128068&action=edit
Glitched ship

The trace also contains a screen of a misrendered ship. Not sure if these
glitches are a related to the lockup.

Here is another, shorter trace showing rendering glichtes recorded with lower
graphics settings and using llvmpipe:
 http://constexpr.org/tmp/GoIO-llvmpipe.trace.xz (188 MiB)

There are no glitches with llvmpipe, but when replaying the trace using
radeonsi parts of the terrain in the menu background are misrendered.

While the glitches look somewhat similar to those in bug #98776, they (and the
lockup) are not fixed by reverting commit 74e39de.

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[Bug 98777] GPU lockup in Guns of Icarus Online

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https://bugs.freedesktop.org/show_bug.cgi?id=98777

--- Comment #2 from Daniel Scharrer <daniel@constexpr.org> ---
Reverting LLVM r286766 "AMDGPU: Implement SGPR spilling with scalar stores"
(while not reverting anything in Mesa) fixes the glitches and lockup - so this
is likely related to bug #98776 and bug #98761 after all.

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[Bug 98777] GPU lockup in Guns of Icarus Online

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https://bugs.freedesktop.org/show_bug.cgi?id=98777

Daniel Scharrer <daniel@constexpr.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from Daniel Scharrer <daniel@constexpr.org> ---
Everything renders fine and there are not GPU lockups with LLVM r289080 and
Mesa git-31f988a9d6.

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