[Bug 92196] [BDW] ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.9 Fails

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Sep 30 07:56:36 PDT 2015


            Bug ID: 92196
           Summary: [BDW]
                    rays.9 Fails
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: marta.lofstedt at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

The OpenGL ES 3.0 CTS:
ES3-CTS.shaders.uniform_block.random.nested_structs_arrays.9 fails for BDW with
Mesa 11.0.2 (git-51e0b06).

I have bisected the first problematic commit to:

commit 18e73bf7f8b12022e02db3230ee109657581900b
Author: Connor Abbott <cwabbott0 at gmail.com>
Date:   Tue Jun 30 13:38:20 2015 -0700

    i965/fs: remove special case in setup_payload_interference()

    regs_read() will handle LINTERP for us since the previous commit. In
    addition, we were being too conservative, since it will only read 2
    registers on SIMD8.

    instructions in affected programs:     9061 -> 8893 (-1.85%)
    helped:                                10
    HURT:                                  0
    GAINED:                                0
    LOST:                                  0

    All of the changes were due to spills being eliminated, mostly in KSP

    Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>
    Signed-off-by: Connor Abbott <connor.w.abbott at intel.com>

With a revert of above commit the test pass. However, the revert cause
regressions for other CTS tests. Also, the commit appear to be part of a
cooperative patch-set from Jordan and Connor.

Potential relation to https://bugs.freedesktop.org/show_bug.cgi?id=92113 has
not yet been proven.

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