[Bug 81930] New: [Hawaii] misrendered glyphs

[Bug 81930] New: [Hawaii] misrendered glyphs

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

          Priority: medium
            Bug ID: 81930
          Assignee: dri-devel@lists.freedesktop.org
           Summary: [Hawaii] misrendered glyphs
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: kai@dev.carbon-project.org
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

Created attachment 103698
  --> https://bugs.freedesktop.org/attachment.cgi?id=103698&action=edit
Latest misrendered glyph (in Firefox/Iceweasel)

When using the accelerated Hawaii setup, I'm seeing misrendered glyphs from
time to time (see the attached files). They most often appear with Firefox
(called Iceweasel in Debian), but I've also seen them within a less window (in
Konsole).

My stack is (base: Debian testing):
GPU: Hawaii PRO [Radeon R9 290] (ChipID = 0x67b1)
Linux: Git:~agdf5/linux:drm-next-3.17-rebased-on-fixes:6e07731f71 (calls itself
3.16-rc6)
libdrm: Git:master/libdrm-2.4.56
LLVM: 3.5 RC1
libclc: Git:master/0ec7437d9c
Mesa: Git:master/85109bc507
DDX: 1:7.4.0-2 + Patch from
http://lists.x.org/archives/xorg-driver-ati/2014-July/026517.html
X: 2:1.16.0-1 (1.16.0)

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[Bug 81930] [Hawaii] misrendered glyphs

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

Kai <kai@dev.carbon-project.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #103698|text/plain                  |image/png
          mime type|                            |

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[Bug 81930] [Hawaii] misrendered glyphs

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

--- Comment #1 from Kai <kai@dev.carbon-project.org> ---
Created attachment 103699
  --> https://bugs.freedesktop.org/attachment.cgi?id=103699&action=edit
An earlier example, first shown in bug 78453, comment #98

And another example, first posted in bug 78453, comment #98.

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[Bug 81930] [Hawaii] misrendered glyphs

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

--- Comment #2 from Kai <kai@dev.carbon-project.org> ---
Created attachment 103700
  --> https://bugs.freedesktop.org/attachment.cgi?id=103700&action=edit
And another one.

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[Bug 81930] [Hawaii] misrendered glyphs

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

--- Comment #3 from Kai <kai@dev.carbon-project.org> ---
Created attachment 103701
  --> https://bugs.freedesktop.org/attachment.cgi?id=103701&action=edit
Sometimes windows are misrendered as well

Very rarely I see misrendered windows as well, is this related or a different
bug?

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[Bug 81930] [Hawaii] misrendered glyphs

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

Kai <kai@dev.carbon-project.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #103701|text/plain                  |image/png
          mime type|                            |

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[Bug 81930] [Hawaii] misrendered glyphs

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

--- Comment #4 from Zoltán Böszörményi <zboszor@pr.hu> ---
I see some misrendered glyphs on my Radeon R9 270X, too, in Firefox. So it's
not Hawaii specific.

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[Bug 81930] [glamor] misrendered glyphs

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https://bugs.freedesktop.org/show_bug.cgi?id=81930

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|dri-devel@lists.freedesktop |xorg-team@lists.x.org
                   |.org                        |
         QA Contact|                            |xorg-team@lists.x.org
            Summary|[Hawaii] misrendered glyphs |[glamor] misrendered glyphs
            Product|Mesa                        |xorg
          Component|Drivers/Gallium/radeonsi    |Driver/glamor

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
I think this is most likely a bug in the glamor glyph cache code.

(In reply to comment #3)
> Very rarely I see misrendered windows as well, is this related or a
> different bug?

Probably different. There is at least one existing bug report about glamor
rendering issues in KDE.

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