[Bug 105351] [Gen6+] piglit's arb_shader_image_load_store-host-mem-barrier fails with a glGetTexSubImage fallback path

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105351

            Bug ID: 105351
           Summary: [Gen6+] piglit's
                    arb_shader_image_load_store-host-mem-barrier fails
                    with a glGetTexSubImage fallback path
           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: nanleychery at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org
                CC: currojerez at riseup.net

Test case:
1. Modify intel_gettexsubimage_blorp to return false.
2. Execute ./bin/arb_shader_image_load_store-host-mem-barrier --quick -auto
-fbo

Expected result: Pass
Actual result: Fail

Probe value at (0, 0, 0, 0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
Probe value at (0, 0, 0, 0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
Probe value at (0, 0, 0, 0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
Probe value at (0, 0, 0, 0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
Probe value at (0, 0, 0, 0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
Probe value at (0, 0, 0, 0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000

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