Bug 288404 – EWS REGRESSION (Sonoma): [ macOS wk2 release ] fast/text/canvas-color-fonts/stroke-gradient-COLR.html is a consistent image failure (failure in EWS)

• Component: New Bugs
• Status: RESOLVED FIXED

[Karl Rackler]

Description:
fast/text/canvas-color-fonts/stroke-gradient-COLR.html

The test has been a constant image failure since the Sonoma H bring-up in EWS.
The actual image is blank white.
This is not happening on the Sonoma G post-commit bots.

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Ftext%2Fcanvas-color-fonts%2Fstroke-gradient-COLR.html&platform=mac

Image Diff:
*Diff images attached*

Test results: 
https://ews-build.s3-us-west-2.amazonaws.com/macOS-Sonoma-Release-WK2-Intel-Tests-EWS/35cf4391-403-clean-tree/results.html

layout-tests -> Full logs:
06:50:23.151 25250 worker/7 fast/text/canvas-color-fonts/stroke-gradient-COLR.html allowed fuzziness {'max_difference': [0, 2], 'total_pixels': [0, 7026]}, actual difference {'max_difference': 2, 'total_pixels': 7083}: pass False
06:50:23.155 25250 [18450/76053] fast/text/canvas-color-fonts/stroke-gradient-COLR.html failed unexpectedly (reference mismatch maxDifference=2; totalPixels=7083)
06:50:23.156 25250 worker/7 fast/text/canvas-color-fonts/stroke-gradient-COLR.html failed:

[Karl Rackler]

Created attachment 474325 [details]
stroke-gradient-COLR-diff

[Karl Rackler]

Created attachment 474326 [details]
stroke-gradient-COLR-actual

[Karl Rackler]

Created attachment 474327 [details]
stroke-gradient-COLR-expected

[Radar WebKit Bug Importer]

<rdar://problem/145504776>

[EWS]

Test gardening commit 290975@main (72f89a14d8f8): <https://commits.webkit.org/290975@main>

Reviewed commits have been landed. Closing PR #41228 and removing active labels.

[Alexey Proskuryakov]

Looks like this is happening on Intel Mac Pro in post commit, too. So this must be about the GPU, and in need of fuzziness increase.

[EWS]

Committed 291532@main (bf38e6f9a7a5): <https://commits.webkit.org/291532@main>

Reviewed commits have been landed. Closing PR #41816 and removing active labels.

[Karl Rackler]

Since landing fuxiness increase at https://commits.webkit.org/291532@main the test has consistently passed.