[Bug 88521] New: GLBenchmark 2.7 TRex renders with artifacts on Gen8 with SNA

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=88521

            Bug ID: 88521
           Summary: GLBenchmark 2.7 TRex renders with artifacts on Gen8
                    with SNA
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

This bug affects Gen8 platforms Braswell and Broadwell.  I've been testing on a
Braswell C0 part.

I'm running with the oibaf ppa on ubuntu 14.10.  The SNA version from xorg log
is:
xserver-xorg-video-intel 2:2.99.917+git1501151931.bb279d~gd~u (Oibaf
<fmrummey at gmail.com>)

If you run the GLBenchmark Onscreen TRex benchmark, you can see occasional
artifacts where leaves draw lines forward into the screen.  It seems like an
off-by-one error, where one of the vertices is squashed when it is rendered.

Changing to UXA eliminates the behavior.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150117/3e6655bf/attachment.html>