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guest271314/decodePixelsFromOffscreenCanvas.js

Created November 25, 2019 03:39
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Convert OffscreenCanvas to ImageData using png.js (OffscreenCanvasRenderingContext2D not implemented at Firefox 70 or Nightly 72)
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decodePixelsFromOffscreenCanvas.js
const imageData = new ImageData(
new Uint8ClampedArray(
new PNG(new Uint8Array(await (await offscreen.toBlob({type: "image/png"})).arrayBuffer())).decodePixels()
)
, offscreen.width, offscreen.height);
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