Bug 268613

Summary: Canvas captureStream produces stuttering with WebGL
Product: WebKit Reporter: Anastasiya Sarmant <ansarman>
Component: CanvasAssignee: Kimmo Kinnunen <kkinnunen>
Status: RESOLVED FIXED    
Severity: Major CC: dino, eric.carlson, heycam, jer.noble, webkit-bug-importer, youennf
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Mac (Apple Silicon)   
OS: macOS 14   
See Also: https://bugs.webkit.org/show_bug.cgi?id=269070
Attachments:
Description Flags
examples none

Anastasiya Sarmant
Reported 2024-02-02 03:15:28 PST
Created attachment 469673 [details] examples Please check the fiddle https://jsfiddle.net/4cy2vsag/7/ canvas.captureStream() on offscreen canvas produces a frozen image (doesn't happen on Chromium). Freezes are more visible if there is a webgl processing in between. If the canvas is attached to the DOM, there are no freezes, just occasional image stuttering. There is an example in the attachments.
Attachments
examples (16.52 MB, video/quicktime)
2024-02-02 03:15 PST, Anastasiya Sarmant 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Radar WebKit Bug Importer
Comment 1 2024-02-09 03:16:17 PST
<rdar://problem/122619662>
youenn fablet
Comment 2 2024-02-09 03:19:31 PST
Low frame rate is probably fixed by https://bugs.webkit.org/show_bug.cgi?id=268455.
youenn fablet
Comment 3 2024-02-09 03:20:06 PST
<rdar://122471664>
youenn fablet
Comment 4 2024-02-09 03:21:44 PST
Let's rename to 'Canvas captureStream produces stuttering with WebGL' since the freeze is fixed by bug 268455.
Kimmo Kinnunen
Comment 5 2024-02-09 08:34:31 PST
Pull request: https://github.com/WebKit/WebKit/pull/24148
EWS
Comment 6 2024-02-11 23:58:21 PST
Committed 274454@main (18019ceed4fb): <https://commits.webkit.org/274454@main> Reviewed commits have been landed. Closing PR #24148 and removing active labels.
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