[Bug 80018] New: [HSW] Ambient occlusion glitch in Planetary Annihilation on Intel HD4600

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80018

          Priority: medium
            Bug ID: 80018
          Assignee: idr at freedesktop.org
           Summary: [HSW] Ambient occlusion glitch in Planetary
                    Annihilation on Intel HD4600
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: sxx.public at yahoo.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/DRI/i965
           Product: Mesa

Created attachment 101033
  --> https://bugs.freedesktop.org/attachment.cgi?id=101033&action=edit
Ambient occlusion on Intel: enabled

Here is some screenshots of incorrect rendering in Planetary Annihilation. If
AO enabled I get really weird behavior when move or zoom camera: shadow is
moving all the time. It's working fine on R600g with same version of Mesa

Here is video on youtube:
http://www.youtube.com/watch?v=gYk8p13sifA
http://www.youtube.com/watch?v=hVpHlZ6LNJE

I also will attach screenshots with correct (R600g, HD6950) and incorrect
(i965, HD4600) rendering. I tested it on vanilla Ubuntu 14.04 drivers as well
as Oibaf PPA.

GL trace using fairly recent build of APITrace (500MB unpacked):
https://drive.google.com/file/d/0B5LwC3WbdQ3DT2dUVHIxZmVQMmc/edit?usp=sharing

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