[Bug 32639] New: Artifacts on dinoshade, neverball and other softwares

[Bug 32639] New: Artifacts on dinoshade, neverball and other softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

           Summary: Artifacts on dinoshade, neverball and other softwares
           Product: Mesa
           Version: 7.8
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/r300
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: alessandro.sturniolo@gmail.com


Created an attachment (id=41424)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=41424)
Dinoshade with artifacts

After the commit 5ee270820ba8dc7bfc6be5812f02c66f4a76f705, as you can see from
the attached snapshots, softwares like Mesa demo dinoshade, neverball or
SecondLife, render artifacts on the scene.
This bug is present in every release after version 7.7.1 (7.7.1 excluded).
Before this commit the artifacts are not presents. It is not present also when
gallium is enabled.
My system is a Linux openSuSE 11.3 (kernel 2.6.34.7-0.5-default SMP) on an AMD
Athlon 64 X2. Graphic card is a Radeon X1200 (RS690).

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[Bug 32639] Artifacts on dinoshade, neverball and other softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #1 from alessandro.sturniolo@gmail.com 2010-12-24 07:02:16 PST ---
Created an attachment (id=41425)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=41425)
Neverball with artifacts

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[Bug 32639] Artifacts on dinoshade, neverball and other softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #2 from alessandro.sturniolo@gmail.com 2010-12-24 07:03:06 PST ---
Created an attachment (id=41426)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=41426)
glxinfo

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[Bug 32639] Artifacts on dinoshade, neverball and other softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #3 from alessandro.sturniolo@gmail.com 2010-12-24 07:04:56 PST ---
http://cgit.freedesktop.org/mesa/mesa/commit/?id=5ee270820ba8dc7bfc6be5812f02c66f4a76f705

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

Jerome Glisse <glisse@freedesktop.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Artifacts on dinoshade,     |[RADEON::R300C] artifacts
                   |neverball and other         |on dinoshade, neverball and
                   |softwares                   |other GL softwares

--- Comment #4 from Jerome Glisse <glisse@freedesktop.org> 2011-03-07 11:23:41 PST ---
Do you still have issue with lastest mesa ? Also please try r300g the classic
r300 driver is no longer actively supported

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #5 from alessandro.sturniolo@gmail.com 2011-03-19 14:49:17 PDT ---
I've recently update my system to openSuSE 11.4, so I've installed recent Mesa
7.10 (RPM package is Mesa-7.10-59.3 from
http://download.opensuse.org/repositories/X11:/XOrg/openSUSE_11.4 repository).

The package is compiled with gallium enabled by default, then the artifacts
aren't present.

Instead when I recompile the package from openSuSE SRPM sources with gallium
disabled, the artifacts reappear.

I've tested with r300 driver, because I was not able to found and enable r300g
on Mesa 7.10.

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #6 from alessandro.sturniolo@gmail.com 2011-03-19 14:54:54 PDT ---
I've google a little bit.
The r300g is the gallium driver for r300?

The problem is that gallium actually is too slow. On my notebook, is much
faster the swrast driver, but if I disable gallium, I get the artifacts.

At this time, on this kind of hardware (I've a Radeon X1200), gallium is almost
unusable.

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #7 from Alex Deucher <agd5f@yahoo.com> 2011-03-19 15:03:59 PDT ---
(In reply to comment #6)
> I've google a little bit.
> The r300g is the gallium driver for r300?
> 
> The problem is that gallium actually is too slow. On my notebook, is much
> faster the swrast driver, but if I disable gallium, I get the artifacts.
> 
> At this time, on this kind of hardware (I've a Radeon X1200), gallium is almost
> unusable.

enable llvm in your mesa build:
--enable-gallium-llvm

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

alessandro.sturniolo@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|7.8                         |7.10

--- Comment #8 from alessandro.sturniolo@gmail.com 2011-03-19 18:13:37 PDT ---
Ok, I've enabled gallium with llvm support. Now neverball, from 1 fps with
gallium (2 fps with swrast) is jumped to 15 fps, and it is more playable.
Thanks :-)
But the performance gap with r300 driver without gallium (from Mesa 7.6
sources) is of a factor of about 2~2.5 times and on limited hardware like my
Radeon X1200 this is frustrating :-(
The fglrx driver, dropped support for this family of video card from March
2009.

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #9 from Fabio Pedretti <fabio.ped@libero.it> 2011-03-21 01:39:02 PDT ---
You could try with mesa from git master:
git pull git://anongit.freedesktop.org/mesa/mesa
It should be faster.

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

--- Comment #10 from Fabio Pedretti <fabio.ped@libero.it> 2011-03-21 01:43:48 PDT ---
git clone git://anongit.freedesktop.org/mesa/mesa

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[Bug 32639] [RADEON::R300C] artifacts on dinoshade, neverball and other GL softwares

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https://bugs.freedesktop.org/show_bug.cgi?id=32639

almos <aaalmosss@gmail.com> changed:

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

--- Comment #11 from almos <aaalmosss@gmail.com> 2011-10-15 11:14:07 PDT ---
I can't comment on SecondLife, but Neverball and the dinoshade demo render
correctly on my rv350 with current r300g. I'm closing this bug, as the r300c is
not supported anymore. Alessandro, please upgrade your system to the 7.11
release of Mesa.

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