[Bug 77862] New: [BDW]Piglit glean_pointAtten fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77862

          Priority: medium
            Bug ID: 77862
          Assignee: idr at freedesktop.org
           Summary: [BDW]Piglit glean_pointAtten fails
        QA Contact: intel-3d-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: Drivers/DRI/i965
           Product: Mesa

System Environment:
--------------------------
Platform: Broadwell
Libdrm:       
(master)libdrm-2.4.53-6-gd4083dc762a2974c35ecd16be995272bbb6d57b4
Mesa:        (master)34a68345e228b7cbc1bc6909704a89c08bf5368e
Xserver:   
(master)xorg-server-1.15.99.902-47-ge924034269532979f1e88947ee9c33d30461edae
Xf86_video_intel:(master)2.99.911-94-gbb5b21e34f6cbe44a249e566471754b45c500e60
Libva:        (staging)8577efbd3b1d4e8f113f78cf13d2182aa681b738
Libva_intel_driver:(staging)42258e128f19b93aa102672d5f61eb73d9f9808f
Kernel:    (drm-intel-nightly)1e771b84e47085ef9b6efea1321e7cb5a8b2c065

Bug detailed description:
-----------------------------
It fails on Broadwell with Mesa master branch, but works well on Haswell.
output:
libGL: screen 0 does not appear to be DRI3 capable
libGL: pci id for fd 4: 8086:1616, driver i965
libGL: OpenDriver: trying /opt/X11R7/lib/dri/i965_dri.so
----------------------------------------------------------------------
Test point size attenuation with the GL_ARB_point_parameters extension.

stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased
stride 1
Tested 1350
PASS: 17550 antialiased combinations tested.
stride 1
        FAILURE:
        Expected size: 9  Actual size: 0.572549
        Size: 9
        Min: 1  Max: 11
        Attenuation: 1 100 100
        Eye Z: 0
        Smooth/antialiased

Reproduce steps:
----------------------------
1. xinit
2. ./bin/glean -o -v -v -v -t +pointAtten

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