[Bug 94354] R9285 Unigine Valley perf regression since radeonsi: use re-Z

[Bug 94354] R9285 Unigine Valley perf regression since radeonsi: use re-Z

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https://bugs.freedesktop.org/show_bug.cgi?id=94354

            Bug ID: 94354
           Summary: R9285 Unigine Valley perf regression since radeonsi:
                    use re-Z
           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: adf.lists@gmail.com
        QA Contact: dri-devel@lists.freedesktop.org

Haven't tested other apps/settings, but on R9285 Unigine Valley on highest
settings, 8x AA, 1920x1080 fullscreen is slower after 

d0f3b524cdb8489a6872ba3639a13813de221fc2

radeonsi: use re-Z
This can increase perf for shaders that kill pixels (kill, alpha-test,
alpha-to-coverage).

Before

FPS: 27.2
Score: 1139
Min FPS: 13.5
Max FPS: 52.0

After 

FPS: 22.6
Score: 946
Min FPS: 11.7
Max FPS: 47.1

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[Bug 94354] R9285 Unigine Valley perf regression since radeonsi: use re-Z

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https://bugs.freedesktop.org/show_bug.cgi?id=94354

--- Comment #1 from russianneuromancer@ya.ru ---
https://lists.freedesktop.org/archives/mesa-dev/2016-October/131759.html

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[Bug 94354] R9285 Unigine Valley perf regression since radeonsi: use re-Z

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https://bugs.freedesktop.org/show_bug.cgi?id=94354

Andy Furniss <adf.lists@gmail.com> changed:

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

--- Comment #2 from Andy Furniss <adf.lists@gmail.com> ---
Fixed

https://cgit.freedesktop.org/mesa/mesa/commit/?id=e12c1cab5d571c215f65bd9f3fc1629c090ed948

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[Bug 94354] R9285 Unigine Valley perf regression since radeonsi: use re-Z

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https://bugs.freedesktop.org/show_bug.cgi?id=94354

--- Comment #3 from Marek Olšák <maraeo@gmail.com> ---
Thanks and sorry for missing this bug.

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[Bug 94354] R9285 Unigine Valley perf regression since radeonsi: use re-Z

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https://bugs.freedesktop.org/show_bug.cgi?id=94354

--- Comment #4 from Andy Furniss <adf.lists@gmail.com> ---
NP, I should have bumped it long ago.

I was suprised no one else noticed - I guess phoronix tests use lower settings
or something.

Thanks for all your and others work on perf.

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