[Bug 78877] New: [BDW Regression]Piglit spec_ARB_sample_shading_builtin-gl-sample-id_2 fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78877

          Priority: high
            Bug ID: 78877
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]Piglit
                    spec_ARB_sample_shading_builtin-gl-sample-id_2 fails
        QA Contact: intel-gfx-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: DRM/Intel
           Product: DRI

System Environment:
--------------------------
Platform: Broadwell
Libdrm:    (master)libdrm-2.4.54-8-g305478ce02ebd908a75c9830ecea15f6e2469b42
Mesa:    (master)5646319f25c7880b3706bb7590e24c84fd8de0fc
Xserver:(master)xorg-server-1.15.99.902-91-g01e18af17f8dc91451fbd0902049045afd1cea7e
Xf86_video_intel:(master)2.99.911-173-gdf297e9fafe1a7de1036f3151f93de67661c2a4e
Libva:    (staging)968ade9411de9c5ae2eead0a7e8755747a32a3a2
Libva_intel_driver:        (staging)1c4d3468229797e787f4b99b0729baf90a115a1d
Kernel:    (drm-intel-nightly)f79ba79cf037eea9ee757ad37730b00f43d5ef80

Bug detailed description:
-----------------------------
It fails on Broadwell with -queued and -nightly kernel, It works well on -fixes
kernel.
Following cases also fail:
spec_ARB_sample_shading_builtin-gl-sample-mask_0
spec_ARB_sample_shading_builtin-gl-sample-mask_2
spec_ARB_sample_shading_builtin-gl-sample-mask_4
spec_ARB_sample_shading_builtin-gl-sample-mask_6
spec_ARB_sample_shading_builtin-gl-sample-mask_8
spec_ARB_sample_shading_builtin-gl-sample-position_2
spec_EXT_framebuffer_multisample_multisample-blit_2_color
spec_EXT_framebuffer_multisample_multisample-blit_2_color_linear
spec_EXT_framebuffer_multisample_multisample-blit_2_depth
spec_EXT_framebuffer_multisample_no-color_2_depth-computed_combined
spec_EXT_framebuffer_multisample_no-color_2_depth-computed_separate
spec_EXT_framebuffer_multisample_no-color_2_depth-computed_single
spec_EXT_framebuffer_multisample_no-color_2_depth_combined
spec_EXT_framebuffer_multisample_no-color_2_depth_separate
spec_EXT_framebuffer_multisample_no-color_2_depth_single
spec_EXT_framebuffer_multisample_unaligned-blit_2_color_msaa
spec_EXT_framebuffer_multisample_unaligned-blit_2_depth_msaa

The latest known good commit: b7c0d9df97c10ec5693a838df2fd53058f8e9e96
The latest known bad commit: d3b448d9917a3d6531e499d88bfb13ea5e31e4ad

output:
Probe color at (124,0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
FBO attachment = TEXTURE, result = fail
Probe color at (2,0)
  Expected: 0.000000 1.000000 0.000000 1.000000
  Observed: 1.000000 0.000000 0.000000 1.000000
FBO attachment = RENDERBUFFER, result = fail
PIGLIT: {'result': 'fail' }


Reproduce steps:
---------------------------- 
1. xinit
2. bin/arb_sample_shading-builtin-gl-sample-id 2 -auto

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