Bug 255181 - [ iOS ] fast/gradients/linear-two-hints-angle.html is a constant ImageOnlyFailure
Summary: [ iOS ] fast/gradients/linear-two-hints-angle.html is a constant ImageOnlyFai...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2023-04-07 16:58 PDT by Robert Jenner
Modified: 2023-04-13 16:03 PDT (History)
5 users (show)

See Also:


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Description Robert Jenner 2023-04-07 16:58:37 PDT
fast/gradients/linear-two-hints-angle.html

is a constant ImageOnlyFailure on iOS.

HISTORY:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fgradients%2Flinear-two-hints-angle.html

This appears to have started after we updated to iOS 16.4.

DIFF URL:
https://build.webkit.org/results/Apple-iOS-16-Simulator-Release-WK2-Tests/262718@main%20(2043)/fast/gradients/linear-two-hints-angle-diffs.html

It appears to be off by .01%
Comment 1 Radar WebKit Bug Importer 2023-04-07 16:58:56 PDT
<rdar://problem/107774707>
Comment 2 Robert Jenner 2023-04-07 16:59:54 PDT
I have reproduced this at iOS 16 Release ToT running as follows:

run-webkit-tests --iOS-simulator fast/gradients/linear-two-hints-angle.html

I have marked expectations for this test while under investigation. 

https://commits.webkit.org/262734@main
Comment 3 Simon Fraser (smfr) 2023-04-07 17:12:29 PDT
Needs some pixel tolerance (or we turn off gradient noise).
Comment 4 Alexey Proskuryakov 2023-04-08 17:14:39 PDT
How can we turn off gradient noise? That sounds like a better fix.
Comment 5 Ryan Haddad 2023-04-10 15:58:01 PDT
(In reply to Alexey Proskuryakov from comment #4)
> How can we turn off gradient noise? That sounds like a better fix.

+1 for this, I've see many of these kinds of diffs for tests using linear gradients.
Comment 6 Simon Fraser (smfr) 2023-04-10 16:05:00 PDT
See <rdar://problem/83258510>
Comment 7 EWS 2023-04-11 22:15:28 PDT
Test gardening commit 262858@main (01307ba22bed): <https://commits.webkit.org/262858@main>

Reviewed commits have been landed. Closing PR #12638 and removing active labels.