Bug 244378

Summary: [WPE] Modern media controls cause timeouts in layout tests
Product: WebKit Reporter: Zan Dobersek <zan>
Component: New BugsAssignee: Adrian Perez <aperez>
Status: RESOLVED FIXED    
Severity: Normal CC: lmoura, webkit-bug-importer
Priority: P2 Keywords: InRadar, LayoutTestFailure
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=182502
https://bugs.webkit.org/show_bug.cgi?id=242956
Bug Depends on: 244379, 244461    
Bug Blocks:    

Description Zan Dobersek 2022-08-25 23:35:16 PDT 
The modern media controls employ a backdrop filter for visual effect. In media tests displaying the controls, this backdrop filter is rendered with poor performance in software rasterization mode.

This can cause sporadic and repeatable layout test timeouts as well as WebProcess terminations during the process of resetting the testing environment to default values. Specifically, while about:blank is being loaded, there still might be a rendering phase occurring, handling the filter, delaying the about:blank load and causing WebKitTestRunner to time out on that load and just terminate the process.

Until this gets resolved, I'll attempt to mark the related tests as slow, which should hopefully allow more time for rendering to resolve, avoiding these timeouts.
Comment 1 Adrian Perez 2022-08-31 05:16:56 PDT 
Pull request: https://github.com/WebKit/WebKit/pull/3848
Comment 2 EWS 2022-08-31 07:27:11 PDT 
Committed 253982@main (4cd7ac02f6bd): <https://commits.webkit.org/253982@main>

Reviewed commits have been landed. Closing PR #3848 and removing active labels.
Comment 3 Radar WebKit Bug Importer 2022-08-31 07:28:15 PDT 
<rdar://problem/99382188>