Bug 204951

Summary:

compositing/video/video-border-radius-clipping.html is a flaky Image Failure

Product:

WebKit

Reporter:

Matt Lewis <jlewis3>

Component:

Compositing

Assignee:

Simon Fraser (smfr) <simon.fraser>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

dino, eric.carlson, ews-watchlist, glenn, jer.noble, koivisto, philipj, sergio, simon.fraser, tsavell, webkit-bot-watchers-bugzilla, webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

See Also:

https://bugs.webkit.org/show_bug.cgi?id=205226

Attachments:

Description	Flags
Patch	none

Matt Lewis

Reported 2019-12-06 10:23:54 PST

compositing/video/video-border-radius-clipping.html is a flaky Image Failure on Catalina Release WK2 This seems to have first started after https://trac.webkit.org/changeset/252245/webkit where Angle support was introduced. https://build.webkit.org/results/Apple-Catalina-Release-WK2-Tests/r253206%20(1314)/results.html https://results.webkit.org/?suite=layout-tests&test=compositing%2Fvideo%2Fvideo-border-radius-clipping.html https://build.webkit.org/results/Apple-Catalina-Release-WK2-Tests/r253206%20(1314)/compositing/video/video-border-radius-clipping-diffs.html

Attachments
Patch (5.45 KB, patch) 2019-12-09 16:55 PST, Simon Fraser (smfr)	no flags	Details Formatted Diff Diff
View All Add attachment proposed patch, testcase, etc.

Radar WebKit Bug Importer

Comment 1 2019-12-06 10:24:53 PST

<rdar://problem/57703078>

Alexey Proskuryakov

Comment 2 2019-12-07 13:33:26 PST

This is quite interesting. The first failure on results.webkit.org is indeed with r252246, but that seems very unlikely to be related, and the failure is too rare to blame to a specific revision. But the test also fails on other queues, both or results.webkit.org and internally. It fails in many different ways. The failure that Matt pointed out is painting a red rectangle. Other failures include antialiasing differences and getting a red line.

Simon Fraser (smfr)

Comment 3 2019-12-09 16:55:53 PST

Created attachment 385210 [details] Patch

Simon Fraser (smfr)

Comment 4 2019-12-09 16:58:49 PST

https://trac.webkit.org/changeset/253310/webkit

Truitt Savell

Comment 5 2019-12-13 12:05:57 PST

This appears to have caused compositing/video/video-border-radius-clipping.html to become a constant failure on High Sierra and Catalina wk1 history: https://results.webkit.org/?suite=layout-tests&test=compositing%2Fvideo%2Fvideo-border-radius-clipping.html Diff: https://build.webkit.org/results/Apple%20High%20Sierra%20Release%20WK1%20(Tests)/r253485%20(17701)/compositing/video/video-border-radius-clipping-diffs.html Looks like a single pixel difference.

Truitt Savell

Comment 6 2019-12-13 16:18:17 PST

Tracking this in https://bugs.webkit.org/show_bug.cgi?id=205226

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