[Bug 89094] New: [SNB/IVB/HSW/BYT Bisected]Ogles3conform ES3-CTS.gtf.GL3Tests.shadow.shadow_execution_vert fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89094

            Bug ID: 89094
           Summary: [SNB/IVB/HSW/BYT Bisected]Ogles3conform
                    ES3-CTS.gtf.GL3Tests.shadow.shadow_execution_vert
                    fails
           Product: Mesa
           Version: 10.4
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org
                CC: currojerez at riseup.net

Created attachment 113382
  --> https://bugs.freedesktop.org/attachment.cgi?id=113382&action=edit
dmesg

System Environment:
--------------------------
Platform: SNB
Libdrm:        
(master)libdrm-2.4.59-10-gde8532dd8359dfdaba839ff61fc9e2f05eaf57d3
Mesa:           (master)ea0f0eb6c0a8b20bcce50c63170df94892a51142
Xserver:       
(master)xorg-server-1.17.0-2-g20079c36cf7d377938ca5478447d8b9045cb7d43
Xf86_video_intel:
(master)2.99.917-111-g8ef3fdacac05ee93b685a93f6664696d026e889e
Libva:          (master)f9741725839ea144e9a6a1827f74503ee39946c3
Libva_intel_driver:   (master)9a20d6c34cb65e5b85dd16d6c8b3a215c5972b18
Kernel:  drm-intel-nightly/34f9b98d3e64c8df349816115ea5a560a6763ce8

ug detailed description:
---------------------------
It fails on SNB/IVB/HSW/BYT with mesa master branch, works well on 10.4 branch.
Bisect shows: 16b911257440afbd77a6eb762e28df62e3c19bc7 is the first bad commit
commit 16b911257440afbd77a6eb762e28df62e3c19bc7
Author:     Francisco Jerez <currojerez at riseup.net>
AuthorDate: Tue Feb 3 22:53:17 2015 +0200
Commit:     Francisco Jerez <currojerez at riseup.net>
CommitDate: Tue Feb 10 19:09:24 2015 +0200

    i965/vec4: Pass dst register to the vec4_instruction constructor.

    So regs_written gets initialized with a sensible value.

    Reviewed-by: Matt Turner <mattst88 at gmail.com>

Reproduce steps:
-------------------------
1. xinit
2. ./glcts --deqp-case=ES3-CTS.gtf.GL3Tests.shadow.shadow_execution_vert

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