Bug 103988

Summary:	Intermittent piglit failures with shader cache enabled
Product:	Mesa	Reporter:	Mark Janes <mark.a.janes>
Component:	Drivers/DRI/i965	Assignee:	Jordan Justen <jljusten>
Status:	RESOLVED FIXED	QA Contact:	Intel 3D Bugs Mailing List <intel-3d-bugs>
Severity:	normal
Priority:	medium
Version:	git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Mark Janes 2017-11-30 04:17:27 UTC

Running piglit a second time with all shaders cached, several tests fail intermittently:

piglit.spec.arb_shading_language_420pack.active sampler conflict
Unexpected GL error: GL_NO_ERROR 0x0
(Error at ../tests/spec/arb_shading_language_420pack/execution/active-sampler-conflict.c:148)
Expected GL error: GL_INVALID_OPERATION 0x502

piglit.spec.arb_tessellation_shader.execution.tcs-input-read-array-interface
Probe color at (0,0)
  Expected: 0 255 0 255
  Observed: 0 0 0 0
Test failure on line 70

piglit.spec.glsl-1_50.execution.geometry.clip-distance-vs-gs-out
Probe color at (0,0)
  Expected: 0 255 0 255
  Observed: 255 0 0 255
Test failure on line 53

Comment 1 Mark Janes 2017-12-05 17:03:24 UTC

Some tests were fixed by:

fc033742d2128ccfda6bf4c92254f632b9445b0c
Author:     Jordan Justen <jordan.l.justen@intel.com>
i965: Serialize nir later in the linking process

However, the following test continues to fail intermittently with shader cache enabled:

piglit.spec.arb_shading_language_420pack.active sampler conflict

Comment 2 Jordan Justen 2017-12-13 19:21:00 UTC

I think the latest jenkins results look clean following:

commit dc07bb5fd188a4352ec90edb6c6107ae1ce11b50
Author: Jordan Justen <jordan.l.justen@intel.com>
Date:   Tue Dec 12 11:44:01 2017 -0800

    program: Don't reset SamplersValidated when restoring from shader cache

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