Bug 81857

Summary:	[SNB+]Piglit spec_glsl-1.30_execution_switch_fs-default_last sporadically fail
Product:	Mesa	Reporter:	lu hua <huax.lu>
Component:	Drivers/DRI/i965	Assignee:	Tapani Pälli <lemody>
Status:	VERIFIED FIXED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	major
Priority:	medium
Version:	unspecified
Hardware:	All
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description lu hua 2014-07-29 02:22:51 UTC

System Environment:
--------------------------
Platform: SNB
Libdrm:		(master)libdrm-2.4.55
Mesa:		(master)be8bc588b93286dff6a6c1e8594ec40da50658ff
Xserver:	(master)xorg-server-1.15.99.902-121-g2f5cf9ff9a0f713b7e038636484c77f113a5f10a
Xf86_video_intel:(master)2.99.914-5-gcac1548a9c48db4707fc3c885b1ea568ae2fbc54
Libva:		(master)3fddb7f937df4e0e15391bd65ae3c7552ea5b3d7
Libva_intel_driver:(master)82d2ed8d7da3619c0ea467c06604f5626fc0b901
Kernel:  (drm-intel-nightly)e967a525207bd40ab446e2f809907039f88e66f3

Bug detailed description:
---------------------------
New case spec_glsl-1.30_execution_switch_fs-default_last sporadically fail on SNB+ platforms on Mesa master branch. Fail rate: 2/5.
Run 5 cycles on 10.2 branch, It works well.

output:
Probe color at (0,249)
  Expected: 0.000000 0.000000 1.000000 0.000000
  Observed: 0.000000 0.000000 0.000000 0.000000
PIGLIT: {"result": "fail" }


Reproduce steps:
---------------------------- 
1. xinit
2. bin/shader_runner tests/spec/glsl-1.30/execution/switch/fs-default_last.shader_test -auto

Comment 1 Tapani Pälli 2014-08-01 05:03:50 UTC

Fix has been posted to mesa-dev for review:
http://lists.freedesktop.org/archives/mesa-dev/2014-July/064107.html

Comment 2 lu hua 2014-08-01 07:22:48 UTC

(In reply to comment #1)
> Fix has been posted to mesa-dev for review:
> http://lists.freedesktop.org/archives/mesa-dev/2014-July/064107.html

Apply this patch and run 10 cycles, it works well.

Comment 3 Tapani Pälli 2014-08-04 09:36:31 UTC

fix pushed to master

Comment 4 lu hua 2014-08-06 05:57:21 UTC

Verified.

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