[Webkit-unassigned] [Bug 262079] New: REGRESSION(268103 at main?): [ Ventura+ arm64 wk2 ] fast/gradients/alpha-premultiplied-representable-by-unpremultiplied.html is a constant ImageOnlyFailure.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=262079

            Bug ID: 262079
           Summary: REGRESSION(268103 at main?): [ Ventura+ arm64 wk2 ]
                    fast/gradients/alpha-premultiplied-representable-by-un
                    premultiplied.html is a constant ImageOnlyFailure.
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGPU
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ben_schwartz at apple.com
                CC: bfulgham at webkit.org, heycam at apple.com,
                    webkit-bot-watchers-bugzilla at group.apple.com,
                    webkit-bug-importer at group.apple.com

Created attachment 467858

  --> https://bugs.webkit.org/attachment.cgi?id=467858&action=review

alpha-premultiplied-representable-by-unpremultiplied-images.zip

fast/gradients/alpha-premultiplied-representable-by-unpremultiplied.html

This test is a constant ImageOnlyFailure on wk2 builds on Apple Silicon machines running macOS Ventura or higher.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=fast%2Fgradients%2Falpha-premultiplied-representable-by-unpremultiplied.html&platform=mac&flavor=wk2

IMAGE DIFF:

Attached.

IMAGES URL:

https://build.webkit.org/results/Apple-Ventura-Release-AppleSilicon-WK2-Tests/268405@main%20(5116)/fast/gradients/alpha-premultiplied-representable-by-unpremultiplied-diffs.html

REPRODUCIBILITY:

I was able to reproduce this issue on macOS Ventura (13.5, 22G74/arm64) ToT using the following command:

run-webkit-tests --verbose --clobber-old-results fast/gradients/alpha-premultiplied-representable-by-unpremultiplied.html

REGRESSION:

I have marked the potential regression point as 268103 at main; however, the issue reproduces in my testing environments before that point.

NOTE:

The test was last modified at 258178 at main.

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