Offscreen canvas transfer to dedicated worker

[serzhiio]

Does somebody know the most efficient way of doing this?
I cant Ser/De canvas to transfer it to worker.

var htmlCanvas = document.getElementById("canvas");
var offscreen = htmlCanvas.transferControlToOffscreen();

var worker = new Worker("offscreencanvas.js"); 
worker.postMessage({canvas: offscreen}, [offscreen]);

[siku2]

Closing this. See #1823 for details