[Bug 96908] [radeonsi] MSAA causes graphical artifacts

[Bug 96908] [radeonsi] MSAA causes graphical artifacts

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

            Bug ID: 96908
           Summary: [radeonsi] MSAA causes graphical artifacts
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: Platerx@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 125035
  --> https://bugs.freedesktop.org/attachment.cgi?id=125035&action=edit
artifacts in The Talos Principle

When I enable MSAA (x2, x4 or x8) in the Unigine Heaven or in The Talos
Principle (I haven't tried other games yet) I get graphical artifacts. You can
see them on the attached screenshots.

GPU: AMD RX480
OS: Fedora 25
Mesa version:  git b479c47
LLVM version: svn 275001
Kernel version: 4.7.0-rc6
linux-firmware: git a141500

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #1 from Andrey Vaynberger <Platerx@gmail.com> ---
Created attachment 125036
  --> https://bugs.freedesktop.org/attachment.cgi?id=125036&action=edit
Artifacts in Unigine Heaven

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #2 from Andrey Vaynberger <Platerx@gmail.com> ---
Created attachment 125037
  --> https://bugs.freedesktop.org/attachment.cgi?id=125037&action=edit
glxinfo64 output

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #3 from Andrey Vaynberger <Platerx@gmail.com> ---
Created attachment 125038
  --> https://bugs.freedesktop.org/attachment.cgi?id=125038&action=edit
dmesg output

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #4 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Hi Andrey, thanks for the report.

I just tried Unigine Heaven with x8 on Tonga, and see no such problems. I'm
also fairly certain that I tried MSAA in Heaven on Polaris10 and so no such
problems, but I'll re-try when I get the change. I'll keep you posted.

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #5 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Sorry, forgot to mention: could you provide an apitrace of The Talos Principle
that shows the artifacts on your system? Upload e.g. to Google Drive since it's
going to be fairly large.

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #6 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Never mind, I see them in Unigine Heaven on Polaris10 as well. Must be a recent
regression.

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #7 from Andrey Vaynberger <Platerx@gmail.com> ---
The apitrace of The Talos Principle:
https://drive.google.com/open?id=0BzMT1H8Zl-hEeXBhSUxqQkM1dEk. Just in case.

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #8 from Nicolai Hähnle <nhaehnle@gmail.com> ---
The patch at https://patchwork.freedesktop.org/patch/99101/ fixes the problem
for me.

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

--- Comment #9 from Andrey Vaynberger <Platerx@gmail.com> ---
I confirm. The patch fixes the problem for me as well.

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[Bug 96908] [radeonsi] MSAA causes graphical artifacts

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https://bugs.freedesktop.org/show_bug.cgi?id=96908

Nicolai Hähnle <nhaehnle@gmail.com> changed:

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

--- Comment #10 from Nicolai Hähnle <nhaehnle@gmail.com> ---
Mesa master commit f755da0f2f8609e603b50424aa254358eb72fa25

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