[Bug 100865] Unigine Heaven 4 lockups GPU in wireframe mode

[Bug 100865] Unigine Heaven 4 lockups GPU in wireframe mode

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https://bugs.freedesktop.org/show_bug.cgi?id=100865

            Bug ID: 100865
           Summary: Unigine Heaven 4 lockups GPU in wireframe mode
           Product: Mesa
           Version: git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/r600
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: marvin24@gmx.de
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 131115
  --> https://bugs.freedesktop.org/attachment.cgi?id=131115&action=edit
dmesg output

launched UH4 on RS880 / Kernel 4.10.10 with mesa git
demo runs well until you press "F2" in order to activate wireframe mode, which
causes GPU lockups

tested mesa: 12, 13, 17, 17.1 and git - all same.

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[Bug 100865] Unigine Heaven 4 lockups GPU in wireframe mode

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https://bugs.freedesktop.org/show_bug.cgi?id=100865

Dieter Nützel <Dieter@nuetzel-hh.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bas@basnieuwenhuizen.nl,
                   |                            |Hi-Angel@yandex.ru

--- Comment #1 from Dieter Nützel <Dieter@nuetzel-hh.de> ---
Hello Marc,

can you please verify, that it is a _combination_ of wireframe _and_
tessellation?
I've got that for ages with r600g, RV730 (HD 4650, 1GB, AGP) and NI/Turks XT
(HD 6670, 2 GB PCIe). As 'Heaven' (UH4) start 'normally' with tessellation
enabled and 'you' press 'F2' (enable wireframe) it could result in GPU lockup.
So please start 'Heaven', press 'F3' (disable tessellation) and last press 'F2'
(enable wireframe). This 'version' works fine for me. It seems to be a
combination of both. But my systems mostly recover from the GPU lockup.
W'll try to get a new backtrace, soon.

Tessellation is so awfully _slow_ (hardware or 'only' software implemantation)
that I think we have to look/point, there.

Bas (Radv) worked on radeonsi tessellation improvements.
See related links:
https://www.phoronix.com/scan.php?page=news_item&px=R600g-Tessellation-Lands

https://www.phoronix.com/scan.php?page=news_item&px=RadeonSI-Tess-G3D-Benchmarks

Second:
I ran all the time with MESA_GL_VERSION_OVERRIDE=4.1COMPAT and 'Heaven' show
display corruption (missing parts), but wireframe works. If I toggle
tessellation (F3) missing parts arise but without tessellation, as expected.
So for 'Heaven' I have to disable MESA_GL_VERSION_OVERRIDE and get the above
boom (GPU lockup).

=> tessellation / wireframe correlation

'All' old and Mesa git, Kernel 4.11-rc8 (and former)

Greetings,
Dieter

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[Bug 100865] Unigine Heaven 4 lockups GPU in wireframe mode

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https://bugs.freedesktop.org/show_bug.cgi?id=100865

--- Comment #2 from Marc Dietrich <marvin24@gmx.de> ---
My card does not support tess and I also disabled it in the launcher. Also my
card is only GL3.3.

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[Bug 100865] Unigine Heaven 4 lockups GPU in wireframe mode

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https://bugs.freedesktop.org/show_bug.cgi?id=100865

--- Comment #3 from Marc Dietrich <marvin24@gmx.de> ---
I ran apitrace on heaven_x64 and now the thing doesn't crash anymore :-( So
maybe commands come to fast in wireframe mode and need some fence/sync point?

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[Bug 100865] Unigine Heaven 4 lockups GPU in wireframe mode

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https://bugs.freedesktop.org/show_bug.cgi?id=100865

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

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

--- 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/600.

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