CanvasKit.MakeCanvas usable in web-worker?

[Peter Verswyvelen]

I have a lot of HTML5 canvas code that I would like to run in a web-worker.

Is it possible to use the CanvasKit drop-in HTML5 Canvas2D replacement in a web-worker?

I guess this uses the software CPU backend for all rendering (which in my case, would be desired).

Thanks,

Peter Verswyvelen

[Kevin Lubick]

I have not experimented with using CanvasKit in a web-worker, but the CPU version should almost certainly work there, since it draws only into memory. The only way to get output is via a PNG (see .toDataURL), so if that doesn't work for you, file a bug (skbug.com) and we'll see if we can expose something that does.

[Peter Verswyvelen]

Thanks for the info.

So OffscreenCanvas is not yet supported in a web worker when using CanvasKit?

Initially I mainly want to use the point-in-path operators, so no need for actual rendering.

Best regards,
Peter

[kjlu...@google.com]

We have not yet added support for OffscreenCanvas to CanvasKit. However, if you are just doing path-related math, I would recommend looking at PathKit (https://www.npmjs.com/package/pathkit-wasm), which is just the Path related parts of CanvasKit.  I see PathKit does not (yet) have the contains method, but I can certainly add that.