Bug 288888 – REGRESSION(284617@main?): [ iOS arm64 ] compositing/contents-format/deep-color-backing-store.html is a constant failure.

• Component: Compositing
• Status: RESOLVED FIXED

[Yasmin Karimi]

compositing/contents-format/deep-color-backing-store.html 

This test is a constant failure on iOS wk2 on iPhone 12 with arm64.

HISTORY:

https://results.webkit.org/?suite=layout-tests&test=compositing%2Fcontents-format%2Fdeep-color-backing-store.html

TEXT DIFF:

@@ -3,7 +3,6 @@
 (GraphicsLayer
   (anchor 0.00 0.00)
   (bounds 5018.00 2018.00)
-  (deep color 1)
   (children 1
     (GraphicsLayer
       (bounds 5018.00 2018.00)
@@ -12,14 +11,12 @@
       (tile size 512 x 512)
       (top left tile 0, 0 tiles grid 2 x 2)
       (in window 1)
-      (deep color 1)
       (children 2
         (GraphicsLayer
           (position 18.00 10.00)
           (bounds 100.00 100.00)
           (contentsOpaque 1)
           (drawsContent 1)
-          (deep color 1)
         )
         (GraphicsLayer
           (position 18.00 120.00)
@@ -31,7 +28,6 @@
           (tile size 512 x 512)
           (top left tile 0, 0 tiles grid 2 x 1)
           (in window 1)
-          (deep color 1)
         )
       )
     )

DIFF URL:

https://build.webkit.org/results/Apple-iOS-18-Simulator-Release-WK2-Tests/291358@main%20(871)/compositing/contents-format/deep-color-backing-store-pretty-diff.html

REPRODUCIBILITY:

I was able to reproduce this issue on the iOS 18.2 simulator at ToT using the following command:

run-webkit-tests --ios-simulator --child-processes 2 -f compositing/contents-format/deep-color-backing-store.html --iterations 5

REGRESSION:

According to the results dashboard and contextual information, the probable regression point is 284617@main. The code paths changed in this commit appear to be related to the observed regression test failure.

[Radar WebKit Bug Importer]

<rdar://problem/145890758>

[EWS]

Test gardening commit 291411@main (564640088318): <https://commits.webkit.org/291411@main>

Reviewed commits have been landed. Closing PR #41687 and removing active labels.

[Kiet Ho]

Pull request: https://github.com/WebKit/WebKit/pull/46720

[EWS]

Committed 296329@main (94d77d86125d): <https://commits.webkit.org/296329@main>

Reviewed commits have been landed. Closing PR #46720 and removing active labels.