Bug 139828

Summary: svg/animations/animateMotion-additive-2a.svg and svg/animations/animateMotion-additive-2b.svg sometimes fail with a very small difference
Product: WebKit Reporter: Alexey Proskuryakov <ap>
Component: Tools / TestsAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: dino, graouts, ryanhaddad, sabouhallawa, simon.fraser, tsavell, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=126304
Attachments:
Description Flags
actual
none
expected none

Alexey Proskuryakov
Reported 2014-12-19 12:36:35 PST
These tests are somewhat frequently reported as "image failure". http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=svg%2Fanimations%2FanimateMotion-additive-2a.svg http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=svg%2Fanimations%2FanimateMotion-additive-2b.svg I can't actually see the difference, even on a difference image, and even when re-computing a difference it in a graphic editor. Weird.
Attachments
actual (18.32 KB, image/png)
2014-12-19 12:38 PST, Alexey Proskuryakov 		no flags
Details
expected (18.33 KB, image/png)
2014-12-19 12:38 PST, Alexey Proskuryakov 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Alexey Proskuryakov
Comment 1 2014-12-19 12:38:20 PST
Created attachment 243563 [details] actual
Alexey Proskuryakov
Comment 2 2014-12-19 12:38:31 PST
Created attachment 243564 [details] expected
Alexey Proskuryakov
Comment 3 2014-12-19 22:00:10 PST
> even when re-computing a difference it in a graphic editor Another editor shows a very small color difference. I wonder if this has anything to do with how alpha is applied.
Alexey Proskuryakov
Comment 4 2015-02-20 15:10:13 PST
Marked as flaky in r180462.
Truitt Savell
Comment 5 2018-07-05 09:42:18 PDT
Looks like we are seeing the same behavior with: svg/animations/animateMotion-additive-2c.svg svg/animations/animateMotion-additive-2d.svg created new bug https://bugs.webkit.org/show_bug.cgi?id=187345 to mark tests as flakey
Truitt Savell
Comment 6 2018-07-05 09:56:40 PDT
I reproduced the flakiness locally for all four tests. I ran the test for 500 iterations each, and they all fail roughly 1/5th of the time.
Radar WebKit Bug Importer
Comment 7 2018-07-31 17:04:22 PDT
<rdar://problem/42793081>
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