[Bug 93435] [HSW bisected] Render error when running Unigine-Heave_v4.0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93435

            Bug ID: 93435
           Summary: [HSW bisected] Render error when running
                    Unigine-Heave_v4.0
           Product: Mesa
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: yex.tian at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 120580
  --> https://bugs.freedesktop.org/attachment.cgi?id=120580&action=edit
Xorg.0.log info

System Environment:
--------------------------
Mesa Regression: yes
Failed Platform: HSW

Bug detailed description:
-----------------------------
Render error with black pictures when running Unigine-Heave_v4.0
pls refer to attached error picture and xorg.log

It's mesa regression, by bisect, shows the first bad mesa commit is 5ead448.
commit 5ead448719f39d27bfbf4cabf138324dfee34a4f
Author:     Marek Olšák <marek.olsak at amd.com>
AuthorDate: Tue Jun 16 22:13:34 2015 +0200
Commit:     Marek Olšák <marek.olsak at amd.com>
CommitDate: Thu Jul 23 00:59:24 2015 +0200

    drirc: drop support for Heaven 3.0, fixes tessellation in 4.0

    Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>


Reproduce steps:
---------------------------
1.  xinit& 
2.  gnome-session&
3. cd unigine-heaven-1.5.2/Unigine_Heaven-4.0/
4. export LD_LIBRARY_PATH=bin/:$LD_LIBRARY_PATH 
5. export force_glsl_extensions_warn=true export
MESA_EXTENSION_OVERRIDE="-GL_ARB_sample_shading"
6. vblank_mode=0 ./bin/heaven_x64 -video_app opengl -data_path ../ -sound_app
null -engine_config ../data/heaven_4.0.cfg -system_script heaven/unigine.cpp
-video_mode -1 -video_fullscreen 1 -extern_define PHORONIX,RELEASE -video_width
1920 -video_height 1080

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