Bug 89141 - [BDW] texelFetch fs sampler2DMSArray 4 98x1x9-98x129x9 fails intermittently
Summary: [BDW] texelFetch fs sampler2DMSArray 4 98x1x9-98x129x9 fails intermittently
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Drivers/DRI/i965 (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Jairo Miramontes
QA Contact: Intel 3D Bugs Mailing List
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Depends on:
Blocks:
 
Reported: 2015-02-13 23:26 UTC by Mark Janes
Modified: 2015-11-20 21:51 UTC (History)
2 users (show)

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Description Mark Janes 2015-02-13 23:26:15 UTC
This piglit test fails intermittently.  It passes about 99 times out of 100.

Relevant output sample from a failed test:

> bin/texelFetch fs sampler2DMSArray 4 98x1x9-98x129x9 -auto -fbo
....
98x100x9
98x101x9
Probe at (14,122)
  Expected: 0.092784 0.150000 0.000000 0.100000
  Observed: 0.082353 0.149020 0.000000 0.098039
98x102x9
98x103x9
...

Test fails on a BDWGT2.  We have no other broadwell platform that runs this test often enough to see the failure.  No other platforms report similar failures.

This occurs on mesa master.  It is difficult to bisect, because it is so infrequent.  

Because BDW was recently enabled in the percheckin test pool, I don't know how long it has been failing for.
Comment 1 Ben Widawsky 2015-11-10 17:23:19 UTC
Just noticed this one. Do you know if there is still an issue? A lot has changed since Feb.
Comment 2 Mark Janes 2015-11-20 18:57:58 UTC
Jairo, can you re-enable this test and see if it fails intermittently?
Comment 3 Jairo Miramontes 2015-11-20 20:17:02 UTC
After executing it 200 times in a row, got 100% pass rate, however will be doing some more testing just in case.
Comment 4 Jairo Miramontes 2015-11-20 21:48:14 UTC
Tested once again 500 times in a row, 100% pass rate


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