[Bug 75794] New: Accumulation of black squares with OpenGL applications at high resolutions

[Bug 75794] New: Accumulation of black squares with OpenGL applications at high resolutions

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

          Priority: medium
            Bug ID: 75794
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Accumulation of black squares with OpenGL applications
                    at high resolutions
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: l.mollari@gmx.net
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 9.1
         Component: Drivers/Gallium/r300
           Product: Mesa

Created attachment 95154
  --> https://bugs.freedesktop.org/attachment.cgi?id=95154&action=edit
glxgears with artifacts

I am having trouble with black areas made up by 8 × 8 pixel squares that occur
in 3D enabled applications when using the build-in TFTs native resolution of
1920 × 1200. Lower resolutions are not affected (see attached screenshots [1]
and [2]). The shape of these areas is sensitive to the actual content drawn in
such a way that it acts like a shadow or an impression of the actual 3D
geometry and even of 2D HUDs in 3D enabled games. These artifacts are
persistent across different applications i. e. the current application inherits
the artifacts from the previous one and vice versa [4]. I have uploaded a video
showing the artifacts described in 0 A. D.:

    https://www.youtube.com/watch?v=Rpu-s8DowFw

I narrowed the glitches down to Mesa 3D version 9.1 that seemingly introduced
the bug. The bug seems to be still present in the most recent Mesa 3D and Linux
kernel versions [6].

Damaged hardware is unlikely to be the cause for these glitches since I was
able to reproduce the same artifacts on three different laptops of the same
product line, all equipped with the same GPU.

All tests were performed with unaltered default settings of the respective
distributions. No manually touched or customized xorg.conf files or kernel mode
settings were in place.

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

l.mollari@gmx.net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #95154|glxgears with artifacts     |1. glxgears with artifacts
        description|                            |
  Attachment #95154|text/plain                  |image/png
          mime type|                            |

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #1 from l.mollari@gmx.net ---
Created attachment 95155
  --> https://bugs.freedesktop.org/attachment.cgi?id=95155&action=edit
2. glxgears without artifacts at lower resolution

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #2 from l.mollari@gmx.net ---
Created attachment 95156
  --> https://bugs.freedesktop.org/attachment.cgi?id=95156&action=edit
3. 0 A. D. with artifacts

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #3 from l.mollari@gmx.net ---
Created attachment 95157
  --> https://bugs.freedesktop.org/attachment.cgi?id=95157&action=edit
4. 0 A. D. with silhouette artifacts

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #4 from l.mollari@gmx.net ---
Created attachment 95158
  --> https://bugs.freedesktop.org/attachment.cgi?id=95158&action=edit
5. Latest Xorg.0.log from the affected system

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #5 from l.mollari@gmx.net ---
Created attachment 95159
  --> https://bugs.freedesktop.org/attachment.cgi?id=95159&action=edit
6. List of tested versions

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #6 from l.mollari@gmx.net ---
Created attachment 95160
  --> https://bugs.freedesktop.org/attachment.cgi?id=95160&action=edit
7. Output from lspci (excerpt)

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #7 from l.mollari@gmx.net ---
Created attachment 95161
  --> https://bugs.freedesktop.org/attachment.cgi?id=95161&action=edit
8. Output from xrandr

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #8 from Alex Deucher <agd5f@yahoo.com> ---
Can you use git to bisect between the 9.0 and 9.1 releases to see what commit
caused the regression?

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #9 from l.mollari@gmx.net ---
Sure, I am going to give it a try.

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #10 from l.mollari@gmx.net ---
My attempt to track down the commit that introduced the glitches ended with the
following error from the configure script, using revisions "mesa-9.1" and
"mesa-9.0.3":

configure: error: DRI driver directory 'r300' does not exist

I followed the instructions given at the Ubuntu wiki site, using the configure
command with the parameters as listed below:

https://wiki.ubuntu.com/X/BisectingMesa

git clone git://anongit.freedesktop.org/git/mesa/mesa

...

./configure --prefix=/usr --mandir=\${prefix}/share/man \
    --infodir=\${prefix}/share/info --sysconfdir=/etc \
    --localstatedir=/var --build=i486-linux-gnu --disable-gallium
--with-driver=dri \
    --with-dri-drivers="r300" --with-demos=xdemos --libdir=/usr/lib/glx \
    --enable-glx-tls --enable-driglx-direct --disable-egl \
    --disable-glu --disable-glut --disable-glw CFLAGS="-Wall -g -O2"

To my understanding the particular driver "r300" is not (any longer?) part of
what I have cloned so far from the git repository, hence the configure script
wants to include a precompiled version. Could you please give me a hint how I
can get past this missing driver obstacle?

However opting out the parameter --with-dri-drivers="r300" enables the
configure script and subsequently the make command to succeed even though
glxgears, now running without artifacts at decent fps, is stuttering
noticeably. This applies to 9.0.3 and 9.1 likewise.

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #11 from Michel Dänzer <michel@daenzer.net> ---
First of all, have you confirmed that the problem is still present in Mesa
10.x?

Mesa 9.0 already didn't have the classic r300 driver anymore. You need to use
--with-gallium-drivers=r300 instead of --with-dri-drivers="r300" (and maybe
also drop --disable-gallium just in case, although AFAICT that shouldn't have
any effect).

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #12 from l.mollari@gmx.net ---
Mesa 10.2.0-devel is still affected by this bug.

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

--- Comment #13 from Brais <brais.sg@hotmail.es> ---
Opening Google Chrome seems to "fix" the bug. Thats weird, my computer is a HP
Compaq nw8440 with a FireGL V5200 GPU, only resolutions over 1920x1080 trigger
the bug. It's fine at 1920x1080 but not at 1920x1081 (In Window mode).

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[Bug 75794] Accumulation of black squares with OpenGL applications at high resolutions

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https://bugs.freedesktop.org/show_bug.cgi?id=75794

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

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

--- Comment #14 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/360.

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