[Bug 60284] New: Artifacts with libreoffice (on gen4)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=60284

          Priority: medium
            Bug ID: 60284
          Assignee: chris at chris-wilson.co.uk
           Summary: Artifacts with libreoffice (on gen4)
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: sergio.callegari at gmail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

Created attachment 74180
  --> https://bugs.freedesktop.org/attachment.cgi?id=74180&action=edit
image in editing

Hi,

I am attaching a couple of screenshots showing rendering artifacts with
libreoffice. These are obtained on a DELL E6500 with mobile4 (gen4) graphics
card, kubuntu 12.10 64bit and updated kernel and graphic drivers.

Currently on linux 3.7.6 (from the ubuntu mainline ppa),
xorg-server-video-intel git snapshot of 1 feb (commit cf0576...), mesa git
snapshot of 22 gen, libdrm git snapshot of 28 jan.

Issue happens both with compositing on and off.

I do not know when or why this started to appear.  I see it both with
libreoffice 3.6 and with 4.0RC3. The fact is that recent libreoffice tries to
mark with a dense mesh pattern the text boxes that are under editing. When the
areas being marked are wide, strange things start to appear. The mesh is
corrupted and so are the bitmap images that appear in the page.

Thanks for looking at them.

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