[Webkit-unassigned] [Bug 237286] [ Monterey ] imported/w3c/web-platform-tests/html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-drawImage-ImageBitmap-video.html is failing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=237286

Cameron McCormack (:heycam) <heycam at apple.com> changed:

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                 CC|                            |jer.noble at apple.com

--- Comment #3 from Cameron McCormack (:heycam) <heycam at apple.com> ---
There are two separate issues which are contributing to the test intermittently failing:

* The test video files I created have a single frame in them, and calling drawImage with such videos sometimes results in empty pixel data being drawn.
* The loadeddata event doesn't really guarantee that the video will have pixels available for drawImage to use. Using requestVideoFrameCallback would be better.

Single frame videos are a bit of an edge case, so I'm not worried about the impact on content.

Additionally, requestVideoFrameCallback seems to be delayed a bit if the video that's passed to drawImage has been inserted into the document but is not playing.

I'll attach a patch to:

* change the test video files to have 10s of solid color, instead of a single frame
* use requestVideoFrameCallback if available
* play the video before waiting for the video frame callback

I'll file separate bugs on these issues.

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