RESOLVED FIXED237424
REGRESSION (Safari 15.3): Drawing video on canvas results in black canvas if GPU Process: Canvas rendering is on 
https://bugs.webkit.org/show_bug.cgi?id=237424
Summary REGRESSION (Safari 15.3): Drawing video on canvas results in black canvas if ...
peter.parks.eron
Reported 2022-03-03 05:40:04 PST
When video uses Hls stream as a source in Safari, and when I want to draw that video onto the canvas using drawImage(video, 0, 0, w, h) (https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/drawImage), canvas results in a black image. If I turn off the experimental feature- GPU Process: Canvas Rendering, everything works as expected. And it worked as expected in previous Safari versions.
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Radar WebKit Bug Importer
Comment 1 2022-03-04 09:16:40 PST
<rdar://problem/89817412>
peter.parks.eron
Comment 2 2022-03-14 11:13:47 PDT
I guess that it started with the first version that included GPU Process: Canvas Rendering as On by default.
Jer Noble
Comment 3 2022-03-30 14:03:59 PDT
This appears to work correctly now: <https://jernoble.github.io/samples/bin/video-to-canvas/hls.html> Peter, would you mind testing with a recent STP build?
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