[Bug 102464] [SNB] piglit.spec.arb_texture_gather.texturegather fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102464

            Bug ID: 102464
           Summary: [SNB] piglit.spec.arb_texture_gather.texturegather
                    fails
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

the following piglit commit regressed several tests on SNB only:

a76e2db38179a7923745b4f9b15fd94198e8cfab
Author:     Neha Bhende <bhenden at vmware.com>

textureGather: correct expected result for
GL_MAX_PROGRAM_TEXTURE_GATHER_COMPONENTS_ARB = 1

Expected results were with respect to
GL_MAX_PROGRAM_TEXTURE_GATHER_COMPONENTS_ARB = 4.  This patch fixes
it for GL_MAX_PROGRAM_TEXTURE_GATHER_COMPONENTS_ARB = 1 as well.

Reviewed-by: Brian Paul <brianp at vmware.com>


About 100 tests regressed, eg:
--------------------------------------------------------------------
piglit.spec.arb_texture_gather.texturegatheroffset.fs-r-one-int-2d

Standard Output

/tmp/build_root/m64/lib/piglit/bin/textureGather fs offset r one int 2D -auto
-fbo
piglit: debug: Requested an OpenGL 3.1 Forward-Compatible Core Context, and
received a matching 3.3 context

Probe color at (1,1)
  Expected: 1.000000 0.000000 0.000000 0.000000
  Observed: 1.000000 1.000000 1.000000 1.000000
Probe color at (2,1)
  Expected: 1.000000 0.000000 0.000000 0.000000
  Observed: 1.000000 1.000000 1.000000 1.000000
Probe color at (3,1)
  Expected: 1.000000 0.000000 0.000000 0.000000
  Observed: 1.000000 1.000000 1.000000 1.000000
--------------------------------------------------------------------

Since this test passes other platforms, it may be an SNB-specific mesa bug.

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