Bug 232814

Summary: Cocoa GraphicsContext copies ImageBuffer data to temporary buffer when accelerated ImageBuffer is drawn to bitmap context
Product: WebKit Reporter: Kimmo Kinnunen <kkinnunen>
Component: CanvasAssignee: Kimmo Kinnunen <kkinnunen>
Status: NEW    
Severity: Normal CC: dino, webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 231471    
Bug Blocks:    
Attachments:
Description Flags
Patch none

Kimmo Kinnunen
Reported 2021-11-08 05:35:00 PST
Cocoa GraphicsContext copies ImageBuffer data to temporary buffer when accelerated ImageBuffer is drawn to bitmap context This happens for example when a ImageBitmap is transferred from GPUP to WP. IOSurface::createImage creates an image that will always copy the image data, even though it should be accessible from the IOSurface in most cases.
Attachments
Patch (67.01 KB, patch)
2021-11-08 06:03 PST, Kimmo Kinnunen 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Kimmo Kinnunen
Comment 1 2021-11-08 06:03:23 PST
Created attachment 443539 [details] Patch
Radar WebKit Bug Importer
Comment 2 2021-11-15 05:35:19 PST
<rdar://problem/85408510>
Dean Jackson
Comment 3 2022-02-19 08:17:25 PST
Comment on attachment 443539 [details] Patch Is this still needed? Clearing old review flag. Please rebase and mark for review if necessary.
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