[Bug 75691] New: [BDW]Many Ogles1conform cases fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75691

          Priority: medium
            Bug ID: 75691
          Assignee: idr at freedesktop.org
           Summary: [BDW]Many Ogles1conform cases fail
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Drivers/DRI/i965
           Product: Mesa

Created attachment 94997
  --> https://bugs.freedesktop.org/attachment.cgi?id=94997&action=edit
output(scissor.c)

System Environment:
--------------------------
Platform: Broadwell
Libdrm:       
(master)libdrm-2.4.52-4-gc5de5abbd90333fe1359283fb3a5e457b0f389f3
Mesa:        (master)085f61bd4eb4e75c705cc82ce8c2ecacff6b8383
Xserver:   
(master)xorg-server-1.15.99.901-6-gcaf1dec2a76fbbd21259fe4cc809e24a55ff79b4
Xf86_video_intel:(master)2.99.910-70-g37d080929a20bd969749c6c12d1ef4ebe236063f
Cairo:        (master)f1709c298c355499a18796f389fa0fd9bc52b8c3
Libva:        (staging)2896166fefa36772ea6946ebc5df85024928dd6c
Libva_intel_driver:        (staging)80d1f89388c9cb70218cd759592d2167c8845322
Kernel:    (drm-intel-nightly) 513e589d9dfd6c46617a7875d79242bf2ce68490

Bug detailed description:
-----------------------------
Many Ogles1conform cases fail on Broadwell with Mesa master branch.

Run ./conform -s -v 2 -1 scissor.c
Conform (single precision) failed.
    Scissor test (Test number #14) failed.
******************** SUMMARY OF 'conform' RESULTS ********************
SUMMARY: Scissor test (#14) failed 8 times at path level 0.
SUMMARY: 1 test failed across all configs at path level 0.
SUMMARY: 14 conformant configs, 0 non-conformant configs.
****************** END SUMMARY OF 'conform' RESULTS ******************

Reproduce steps:
-------------------------
1. xinit
2. ./conform -s -v 2 -1 scissor.c

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