Bug 242194 - REGRESSION (251723@main): [ iOS ] compositing/images/positioned-image-content-rect.html is a flaky image failure
Summary: REGRESSION (251723@main): [ iOS ] compositing/images/positioned-image-content...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Compositing (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2022-06-30 10:42 PDT by Karl Rackler
Modified: 2022-07-05 11:54 PDT (History)
5 users (show)

See Also:


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Comment 1 Radar WebKit Bug Importer 2022-06-30 10:43:09 PDT
<rdar://problem/96230716>
Comment 2 Karl Rackler 2022-06-30 11:02:21 PDT
REPRODUCTION STEPS
I can reproduce this on 251723@main, but unable to reproduce it on 251722@main or earlier.

Command: 
run-webkit-tests --ios-simulator --debug --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 --iterations 50 --no-retry compositing/images/positioned-image-content-rect.html

Result: 
Unexpected flakiness: image-only failures (1)
  compositing/images/positioned-image-content-rect.html [ ImageOnlyFailure Pass ]
Comment 3 Karl Rackler 2022-06-30 11:04:58 PDT
I have marked this test as a flaky image failure while this issue is investigated.
Comment 4 EWS 2022-06-30 11:12:02 PDT
Test gardening commit 252003@main (769fc294900a): <https://commits.webkit.org/252003@main>

Reviewed commits have been landed. Closing PR #1953 and removing active labels.
Comment 5 Alexey Proskuryakov 2022-07-04 12:03:51 PDT
Looks like an antialiasing or upscaling issue.

Would there be any problem with reverting 251723@main?
Comment 6 Simon Fraser (smfr) 2022-07-05 10:56:54 PDT
Looks like one is a non-Retina image. Possibly affected by an earlier test in the sequence.
Comment 7 Alexey Proskuryakov 2022-07-05 11:54:09 PDT
> Would there be any problem with reverting 251723@main?

I didn't try, but it seems unlikely that it can be reverted cleanly, because of 251965@main.