[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=93591

            Bug ID: 93591
           Summary: [TONGA] ARK Survival Evolved: corruption of main menu
                    textures
           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: EoD@xmw.de
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 120812
  --> https://bugs.freedesktop.org/attachment.cgi?id=120812&action=edit
apitrace trace

I get flickering textures on buttons in the menus of ARK Survival Evolved on my
Tonga.

A video of the corruption: https://www.youtube.com/watch?v=29OP-wlashA

$ glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD TONGA (DRM 3.1.0, LLVM 3.8.0)
OpenGL core profile version string: 4.1 (Core Profile) Mesa 11.2.0-devel
(git-14f21f5)
OpenGL core profile shading language version string: 4.10
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

I am using the current kernel "4.4.0-rc3-geafbbd9" from
cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-4.5 with powerplay enabled.


This issue does not appear on llvmpipe (neither in the apitrace replay, nor
with the game).

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[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

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https://bugs.freedesktop.org/show_bug.cgi?id=93591

EoD <EoD@xmw.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #120812|0                           |1
        is obsolete|                            |

--- Comment #1 from EoD <EoD@xmw.de> ---
Created attachment 120813
  --> https://bugs.freedesktop.org/attachment.cgi?id=120813&action=edit
apitrace trace

wrong mime type of attachment

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[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

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https://bugs.freedesktop.org/show_bug.cgi?id=93591

--- Comment #2 from EoD <EoD@xmw.de> ---
This issue does also not affect my Barts on r600.

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[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

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https://bugs.freedesktop.org/show_bug.cgi?id=93591

Nicolai Hähnle <nhaehnle@gmail.com> changed:

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

--- Comment #3 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Based on an analysis of the trace I've done some time ago this is a pixel
discard problem, most likely the same as bug #93594.

*** This bug has been marked as a duplicate of bug 93594 ***

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[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

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https://bugs.freedesktop.org/show_bug.cgi?id=93591

--- Comment #4 from EoD <EoD@xmw.de> ---
(In reply to Nicolai Hähnle from comment #3)
> Based on an analysis of the trace I've done some time ago this is a pixel
> discard problem, most likely the same as bug #93594.
> 
> *** This bug has been marked as a duplicate of bug 93594 ***

I am not surprised, thanks for looking into it :)

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[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

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https://bugs.freedesktop.org/show_bug.cgi?id=93591

--- Comment #5 from Nicolai Hähnle <nhaehnle@gmail.com> ---
So, I've looked into this again out of curiosity, because I do have an LLVM
patch that can be used to work around this. However, the patch introduces some
inefficiencies, and this is a game bug: it is clear from playing with the
provided apitrace that a derivative is taken after a non-uniform discard/kill,
which is undefined behaviour in GLSL.

Does anybody paying attention to this bug report know of a way to contact the
game developer about this?

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[Bug 93591] [TONGA] ARK Survival Evolved: corruption of main menu textures

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https://bugs.freedesktop.org/show_bug.cgi?id=93591

--- Comment #6 from EoD <EoD@xmw.de> ---
(In reply to Nicolai Hähnle from comment #5)
> So, I've looked into this again out of curiosity, because I do have an LLVM
> patch that can be used to work around this. However, the patch introduces
> some inefficiencies, and this is a game bug: it is clear from playing with
> the provided apitrace that a derivative is taken after a non-uniform
> discard/kill, which is undefined behaviour in GLSL.
> 
> Does anybody paying attention to this bug report know of a way to contact
> the game developer about this?

Unfortunately there seems to be no bugtracker. The list of (core) devs can be
found on their homepage http://www.instinctgames.com/#c-about-us together with
email info@instinctgames.com and phone +20222913556 though.

They are apparently also use 
Twitter: https://twitter.com/instinctgames
Facebook: https://www.facebook.com/InstinctGames
Linkedin: https://www.linkedin.com/company/instinct-games

I could find the linkedin profile of one of the graphics engine programmers
too: https://www.linkedin.com/in/mohammad-yusuf-2b7531a7

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