Nouveau - Apr 2012 - [Bug 49295] New: artifacts in prboom on NV86

https://bugs.freedesktop.org/show_bug.cgi?id=49295

             Bug #: 49295
           Summary: artifacts in prboom on NV86
    Classification: Unclassified
           Product: Mesa
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: svenjoac at gmx.de


Created attachment 60784
  --> https://bugs.freedesktop.org/attachment.cgi?id=60784
Doom 1, Episode 1, Map 4 under prboom 2.5.0

Under prboom 2.5.0 with OpenGL renderer, I'm seeing bad artifacts:

- Walls are very bright, sometimes transparent.  In some cases,
  the texture disappears completely and is replaced by a solid color.

- A "hall of mirrors effect" as described in
http://doomwiki.org/wiki/Hall_of_mirrors_effect.

I'm attaching a screenshot from Doom 1, Episode 1, Map 4 shortly after the
start.

There are no error messages in the kernel logs, and other 3D games (including
doomsday, another Doom source port) are unaffected.


Hardware is a GeForce 8500 GT, software stack as follows:

Mesa from git commit 4c15a77f27
Kernel 3.4.0-rc5
Libdrm from git commit 754655c795
Nouveau DDX from git commit 174f170720

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https://bugs.freedesktop.org/show_bug.cgi?id=49295

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|artifacts in prboom on NV86 |[NV50 gallium] artifacts in
                   |                            |prboom on NV86

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Please retest with the latest mesa.

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--- Comment #2 from Sven Joachim <svenjoac at gmx.de> ---
Still present in Mesa 9.3.0-devel as of commit b5ddaf9975.

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--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Could you create an apitrace of the problem?
https://github.com/apitrace/apitrace

I installed prboom, but it requires the wad files I guess.

Would be good to make sure that when you replay the apitrace, you see the same
artifacts too.

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--- Comment #4 from Martin Peres <martin.peres at ensi-bourges.fr> ---
(In reply to comment #3)
> Could you create an apitrace of the problem?
> https://github.com/apitrace/apitrace
> 
> I installed prboom, but it requires the wad files I guess.
> 
> Would be good to make sure that when you replay the apitrace, you see the
> same artifacts too.
Please limit the trace to a single frame, and send it to a non-public server.

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--- Comment #5 from Ilia Mirkin <imirkin at alum.mit.edu> ---
Please retest with mesa 11.0.3, and attach an apitrace if the issue persists.

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

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

--- Comment #6 from GitLab Migration User <gitlab-migration at
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/1049.

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