[Bug 81655] New: [SNB+ Bisected]Ogles3conform GL3Tests_shadow_shadow_execution_frag.test fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81655

          Priority: high
            Bug ID: 81655
                CC: idr at freedesktop.org
          Assignee: anuj.phogat at gmail.com
           Summary: [SNB+ Bisected]Ogles3conform
                    GL3Tests_shadow_shadow_execution_frag.test fails
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: major
    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 103310
  --> https://bugs.freedesktop.org/attachment.cgi?id=103310&action=edit
output

System Environment:
--------------------------
Platform: SNB 
Libdrm:       
(master)libdrm-2.4.54-19-gc0b34dca2632a774249cfa3b969c3f7ce9df33e1
Mesa:        (master)9548ba6e7bb8e631f6ef6236f7425725239742fe
Xserver:   
(master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f113a5f10a
Xf86_video_intel:(master)2.99.912-248-gbfccacf745d054756661be3edd8898ac6aceb878
Libva:    (master)3fddb7f937df4e0e15391bd65ae3c7552ea5b3d7
Libva_intel_driver:(master)c5cb17ea86f0065a939d3636dd26651c93d497c8

Bug detailed description:
---------------------------
It fails on SNB+ platforms with mesa master branch, works well on 10.2 branch.
GL3Tests_shadow_shadow_execution_vert.test also fail with same bisect commit.

Bisect shows: 9548ba6e7bb8e631f6ef6236f7425725239742fe is the first bad commit.
commit 9548ba6e7bb8e631f6ef6236f7425725239742fe
Author:     Anuj Phogat <anuj.phogat at gmail.com>
AuthorDate: Mon Jul 21 16:58:42 2014 -0700
Commit:     Anuj Phogat <anuj.phogat at gmail.com>
CommitDate: Mon Jul 21 18:33:29 2014 -0700

    mesa: Don't use memcpy() in _mesa_texstore() for float depth texture data

    because float depth texture data needs clamping to [0.0, 1.0]. Let the
    _mesa_texstore() fallback to slower path.

    Fixes Khronos GLES3 CTS tests:
    shadow_execution_vert
    shadow_execution_frag

    V2: Move the check to _mesa_texstore_can_use_memcpy() function.
        Add check for floating point data types.

    Cc: <mesa-stable at lists.freedesktop.org>
    Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
    Reviewed-by: Marek Olšák <marek.olsak at amd.com>


output:
Skipping ConfigID: 70 Sample Buffers: 1 Samples: 4
Skipping ConfigID: 72 Sample Buffers: 1 Samples: 4
Conformance FAILED 6 of 6 tests.

Reproduce steps:
---------------------------- 
1. xinit
2. ./GTF -width=64 -height=64 -run=GL3Tests/shadow/shadow_execution_frag.test

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