Bug 267291

Summary: Umbrella: Using Canvas image sources between different canvases and canvas types is slow
Product: WebKit Reporter: Kimmo Kinnunen <kkinnunen>
Component: CanvasAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: dino, kevmoo, simon.fraser, simontaylor1, webkit-bug-importer, yegor.jbanov
Priority: P2 Keywords: InRadar
Version: WebKit Local Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 234920, 266215, 267290    
Bug Blocks:    

Kimmo Kinnunen
Reported 2024-01-09 11:46:33 PST
Umbrella: Using Canvas image sources between different canvases and canvas types is slow - Video - Offscreen canvas - WebGL - 2DContext - Bitmaprenderer
Attachments
Radar WebKit Bug Importer
Comment 1 2024-01-12 12:16:34 PST
Yegor
Comment 2 2024-05-01 09:39:06 PDT
Here's a couple of repro cases: Plain JS repro: https://jsfiddle.net/yjbanov/0vurdt42/8/ Flutter Web repro: https://image-bitmap-stress-test.web.app/ Fixing this will help us make Flutter web apps run much smoother in Safari and consume less memory.
Simon Fraser (smfr)
Comment 3 2024-12-13 10:26:45 PST
https://jsfiddle.net/yjbanov/0vurdt42/8/ seems fast but https://image-bitmap-stress-test.web.app/ is still slower in Safari than Chrome.
Yegor
Comment 4 2024-12-13 12:38:29 PST
This is exciting! We'll kick the tires in the newest Safari. This variant is still drastically slower compared to Chromium-based browsers: https://jsfiddle.net/6e4dz57v/4/
Yegor
Comment 5 2024-12-13 12:38:59 PST
The difference may be in transferToImageBitmap vs createImageBitmap
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