[Bug 74969] New: [IVB/HSW/BYT bisected] render error when runing unigine-oilrush

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74969

          Priority: medium
            Bug ID: 74969
          Assignee: idr at freedesktop.org
           Summary: [IVB/HSW/BYT bisected] render error when runing
                    unigine-oilrush
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: jianx.zhou at intel.com
          Hardware: All
            Status: NEW
           Version: git
         Component: Drivers/DRI/i965
           Product: Mesa

Platform: IVB/HSW/BYT
Libdrm:(master)libdrm-2.4.52-3-g128e74cf6492025e63e035566bd6e2203e8da5e1
Mesa:(10.1)62a358892f36b479e0992957a16f1e7c52bce8e2
Xserver:(server-1.14-branch)xorg-server-1.14.5
Xf86_video_intel:(master)2.99.910-21-g1c5ccf5d9d8beb7e8343eb2d07bbf97f53c1a224
Cairo:(master)4144307dbfbe7b297135d9ea4b080cae7e06b997
Libva:(master)b4a4f9b212d8b0bf41a910a85a4898573261d2a7
Libva_intel_driver: (master)54cb60f3d973ce6a908ea57f5aa7481803fe653a
Kernel:(drm-intel-nightly)git-64fcdb

Bug detailed description:
----------------------------------------------
Render error when runing unigine-oilrush on IVB/HSW/BYT. The problem exists on
gnome-session and Raw X.  It’s Mesa regression, btw it’s Ok on Mesa 10.0 branch
and upsteam(master). Please see oilrush_scrot.png.
By bisected show the first bad commit is :
4bd6e0d7c69b304be88996a6c2b96ce7d996e627 
Author: Matt Turner <mattst88 at gmail.com> 
glsl: Vectorize multiple scalar assignments 
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com> 

Reproduce steps:
---------------------------------------------
1, xinit&
2, cd /unigine-oilrush-1.12/OilRush-1.12
3, ./launcher_x86.sh

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