Canvas in WebView in UXP sometimes gets erased

Photoshop UXP Plugin API
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1

Hi, I am playing with WebViews in Photoshop and canvases.
After some time HTML canvas gets erased. Canvases look empty. Both for 2d and webgl contexts.
getImageData returns non-erased data.
Sometimes it is related to ‘visibilitychange’ events, but sometimes it is triggered on its own.

Solution would get to call getImageData and putImageData, but maybe there is a better way.
get/put are not free to call. And no canvases would confuse the user.

2

I’m currently using a canvas inside a local webview and it works well in general for me.
Just curious, do you have a similar setup with a canvas inside a local webview?

3

Similar setup. Also a local webview. Maybe the plugin gets OOM on the GPU side in my case and canvases get erased

4

ok, webview just uses Safari on Mac.
And this bug is safari’s bug. Nothing UXP team can do.

It should work on windows, because it uses edge there.