Bug 237569

Summary:

REGRESSION(r289770):[ iPad ] imported/blink/svg/filters/filter-huge-clamping.svg is a constant image failure - Accelerated Drawing

Product:

WebKit

Reporter:

Dawn Morningstar <Morningstar>

Component:

New Bugs

Assignee:

Nobody <webkit-unassigned>

Status:

NEW ---

Severity:

Normal

CC:

jenner, jonlee, rackler, sabouhallawa, simon.fraser, 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=231828
https://bugs.webkit.org/show_bug.cgi?id=237689

Attachments:

Description	Flags
Diffs for imported/blink/svg/filters/filter-huge-clamping.svg	none
Reduced testcase	none

Description Dawn Morningstar 2022-03-07 17:02:36 PST

imported/blink/svg/filters/filter-huge-clamping.svg 
Is a constant image failure on iPad queues. 

r289786 appears to be where failure started but further investigation is needed.

DIFF-URL:
https://build.webkit.org/results/Apple-iPadOS-15-Simulator-Release-WK2-Tests/r290900%20(1224)/imported/blink/svg/filters/filter-huge-clamping-diffs.html

Images will be attached.

Comment 1 Dawn Morningstar 2022-03-07 17:05:31 PST

Created attachment 454054 [details]
Diffs for imported/blink/svg/filters/filter-huge-clamping.svg

Comment 2 Dawn Morningstar 2022-03-07 17:05:53 PST

HISTORY:
https://results.webkit.org/?platform=ios&suite=layout-tests&test=imported%2Fblink%2Fsvg%2Ffilters%2Ffilter-huge-clamping.svg

Comment 3 Radar WebKit Bug Importer 2022-03-07 17:07:00 PST

<rdar://problem/89937959>

Comment 4 Robert Jenner 2022-03-14 14:46:43 PDT

I was able to reproduce the failure at iOS 15 production ToT using the following test:

run-webkit-tests --ipad-simulator imported/blink/svg/filters/filter-huge-clamping.svg

Comment 5 Simon Fraser (smfr) 2022-03-14 15:30:16 PDT

Created attachment 454630 [details]
Reduced testcase

We seem to go bad at a threshold of 4096 (4K).

Comment 6 Simon Fraser (smfr) 2022-03-14 15:49:01 PDT

This does not reproduce in MobileMiniBrowser (with accelerated drawing on).

Comment 7 Simon Fraser (smfr) 2022-03-14 15:49:28 PDT

Disabling accelerated drawing in WebKitTestRunner makes this bug go away.

Comment 8 Simon Fraser (smfr) 2022-03-14 15:58:18 PDT Comment hidden (obsolete)

Ah, in WTR the destination context in SourceGraphicSoftwareApplier::apply() is tagged as linearSRGB, but not in MMB.

Comment 9 Karl Rackler 2022-06-30 22:19:06 PDT

I have marked this test as a consistent image failure while this issue is investigated.

Comment 10 EWS 2022-06-30 22:34:02 PDT

Test gardening commit 252027@main (bb3989fba379): <https://commits.webkit.org/252027@main>

Reviewed commits have been landed. Closing PR #1977 and removing active labels.