[Bug 84826] New: [BSW Regression]Piglit shaders_glsl-routing fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84826

            Bug ID: 84826
           Summary: [BSW Regression]Piglit shaders_glsl-routing fails
           Product: Mesa
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: high
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

System Environment:
--------------------------
Platform: BSW
Libdrm:       
(master)libdrm-2.4.58-4-g00847fa48b83a85b0cb882594a12ed1511f780db
Mesa:        (master)16b53005a7df4249fecb6641af0934c32181fdea
Xserver:   
(master)xorg-server-1.16.0-386-g95a5b92e37f73f497d547fd91c543c16d2cc73de
Xf86_video_intel:(master)2.99.916-84-gec2b9ac81aed0d2dda2948171ca1c260184bf221
Libva:        (master)cdf8636d5fc5b1558570fede347e1599e0d6af3d
Libva_intel_driver:(master)f11176415ec26eb5960ba6841d2d9c22f2cabc60
Kernel:   (drm-intel-nightly)eabc0c8db15f9ba4d727aee5e0612a68cafe1ab5

Bug detailed description:
-----------------------------
It fails on BSW with mesa master branch.
good commit: fc4b5b85ce88f607d29242e6b3667bad6457a871
bad commit: 16b53005a7df4249fecb6641af0934c32181fdea

output:
Test: VS(C0 C1 T0 T1 T2 T3 T4 T5)
      FS(C0 -- T0 -- T2 -- T4 T5)

Test: VS(C0 C1 T0 T1 T2 T3 T4 T5)
      FS(-- C1 T0 T1 -- -- T4 --)

Test: VS(C0 C1 T0 T1 T2 T3 T4 T5)
      FS(C0 C1 -- -- T2 -- T4 T5)

Test: VS(C0 C1 T0 T1 T2 T3 T4 T5)
      FS(-- C1 -- -- T2 T3 -- --)

Test: VS(C0 -- T0 -- T2 -- T4 T5)
      FS(C0 C1 T0 T1 T2 T3 T4 T5)
Probe color at (67,127)
  Expected: 0.200000 0.300000 0.400000
  Observed: 0.200000 0.298039 0.000000

Test: VS(-- C1 T0 T1 -- -- T4 --)
      FS(C0 C1 T0 T1 T2 T3 T4 T5)

Test: VS(C0 C1 -- -- -- T3 -- T5)
      FS(C0 C1 T0 T1 T2 T3 T4 T5)

Test: VS(-- C1 -- -- T2 T3 T4 --)
      FS(C0 C1 T0 T1 T2 T3 T4 T5)

Test: VS(C0 -- T0 -- T2 -- T4 T5)
      FS(C0 C1 T0 T1 -- -- T4 --)

Test: VS(C0 C1 -- T1 -- -- T4 T5)
      FS(-- C1 -- T1 T2 T3 T4 --)

Test: VS(-- C1 T0 -- T2 T3 -- T5)
      FS(-- C1 -- T1 T2 T3 T4 T5)

Test: VS(C0 C1 T0 -- T2 T3 T4 T5)
      FS(C0 -- T0 -- -- T3 -- T5)
PIGLIT: {"result": "fail" }

Reproduce steps:
---------------------------- 
1. xinit
2. bin/glsl-routing -fbo -auto

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