Bug 261276

Summary:	CanvasBase constructs the backing store as DisplayList::ImageBuffer in some cases
Product:	WebKit	Reporter:	Kimmo Kinnunen <kkinnunen>
Component:	Canvas	Assignee:	Kimmo Kinnunen <kkinnunen>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	dino, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified

Description Kimmo Kinnunen 2023-09-07 08:23:38 PDT

CanvasBase constructs the backing store as DisplayList::ImageBuffer in some cases

- DisplayListDrawingEnabled is about render layer backing stores being display listed
- Context2D cannot support display lists, as putImageData is not supported and getImageData would need to flatten the list
- CanvasRenderingContex2DBase already has a setting to record display lists for CustomPaintCanvas

Comment 1 Radar WebKit Bug Importer 2023-09-07 08:24:43 PDT

<rdar://problem/115116912>

Comment 2 Kimmo Kinnunen 2023-09-07 08:32:27 PDT

Pull request: https://github.com/WebKit/WebKit/pull/17545

Comment 3 EWS 2023-09-07 23:45:44 PDT

Committed 267772@main (f64219027be9): <https://commits.webkit.org/267772@main>

Reviewed commits have been landed. Closing PR #17545 and removing active labels.