[Bug 110711] American Truck shows strange colored reflections

[Bug 110711] American Truck shows strange colored reflections

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https://bugs.freedesktop.org/show_bug.cgi?id=110711

            Bug ID: 110711
           Summary: American Truck shows strange colored reflections
           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: gr.muench@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 144301
  --> https://bugs.freedesktop.org/attachment.cgi?id=144301&action=edit
ATS Menu

There is strange colored noise on the chrome parts of the Truck, see
screenshot. Wasnt sure if this was a game bug or a radeonsi one, so I didnt
report, although it was there for several years.

After I saw that a lot graphical issues in other games went away
R600_DEBUG=zerovram I tried that here too and voila!

For me, that looks like a general problem that was undiscovered for several
years and needs examination.

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[Bug 110711] American Truck Simulator shows strange colored reflections

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https://bugs.freedesktop.org/show_bug.cgi?id=110711

Gregor Münch <gr.muench@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|American Truck shows        |American Truck Simulator
                   |strange colored reflections |shows strange colored
                   |                            |reflections

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[Bug 110711] American Truck Simulator shows strange colored reflections

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https://bugs.freedesktop.org/show_bug.cgi?id=110711

Timothy Arceri <t_arceri@yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #1 from Timothy Arceri <t_arceri@yahoo.com.au> ---
Thanks for the bug report.

Patch to workaround the issue: https://patchwork.freedesktop.org/patch/306976/

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[Bug 110711] American Truck Simulator shows strange colored reflections

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https://bugs.freedesktop.org/show_bug.cgi?id=110711

--- Comment #2 from Petr Sebor <petr@scssoft.com> ---
Whoops, this one got unnoticed (unreported?) for quite some time it seems.
However, the game is still evolving and the rendering code improving over the
years. If there is a performance overhead tied together to zeroing VRAM, I'd
rather fix the game. I can do that. Please do not add workarounds if that is
going to hurt the game performance.

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[Bug 110711] American Truck Simulator shows strange colored reflections

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https://bugs.freedesktop.org/show_bug.cgi?id=110711

--- Comment #3 from Timothy Arceri <t_arceri@yahoo.com.au> ---
(In reply to Petr Sebor from comment #2)
> Whoops, this one got unnoticed (unreported?) for quite some time it seems.
> However, the game is still evolving and the rendering code improving over
> the years. If there is a performance overhead tied together to zeroing VRAM,
> I'd rather fix the game. I can do that. Please do not add workarounds if
> that is going to hurt the game performance.

Performance shouldn't be impacted too much be we would much rather not have
these workarounds. I've pushed the workaround to master for now but if you fix
it please report it here and I've revert the change. Thanks.

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[Bug 110711] American Truck Simulator shows strange colored reflections

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https://bugs.freedesktop.org/show_bug.cgi?id=110711

GitLab Migration User <gitlab-migration@fdo.invalid> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |MOVED

--- Comment #4 from GitLab Migration User <gitlab-migration@fdo.invalid> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1407.

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