Bug 246589

Summary:	[WebXR] Use ANGLE extension to signal compositor completion event
Product:	WebKit	Reporter:	Dan Glastonbury <djg>
Component:	WebXR	Assignee:	Dan Glastonbury <djg>
Status:	RESOLVED FIXED
Severity:	Enhancement	CC:	adachan, dino, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Other
Hardware:	All
OS:	Other
Bug Depends on:	243529
Bug Blocks:

Description Dan Glastonbury 2022-10-15 18:38:49 PDT

Compositors provide an MTLSharedEvent to be signalled at the completion of scene rendering. Now that ANGLE supports signalling external MTLSharedEvent (https://bugs.webkit.org/show_bug.cgi?id=243529), WebXROpaqueFramebuffer rendering should us this to signal when the compositor is free to start composition.

Comment 1 Radar WebKit Bug Importer 2022-10-15 18:39:30 PDT

<rdar://problem/101212895>

Comment 2 Dan Glastonbury 2022-10-15 18:56:26 PDT

Pull request: https://github.com/WebKit/WebKit/pull/5425

Comment 3 EWS 2022-10-16 22:53:16 PDT

Committed 255613@main (2a4dc7e13fde): <https://commits.webkit.org/255613@main>

Reviewed commits have been landed. Closing PR #5425 and removing active labels.