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Test Info:

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/ -->
<html class="reftest-wait">
<link rel="match" href="2d.layer.css-filters.shadow-expected.html">
<title>Canvas test: 2d.layer.css-filters.shadow</title>
<p class="desc">Checks that beginLayer works with a CSS filter string as input.</p>
<canvas id="canvas" width="200" height="200">
<p class="fallback">FAIL (fallback content)</p>
<script id='myWorker' type='text/worker'>
self.onmessage = function(e) {
const canvas = new OffscreenCanvas(200, 200);
const ctx = canvas.getContext('2d');
ctx.beginLayer({filter: 'drop-shadow(-10px -10px 5px purple)'});
ctx.fillStyle = 'teal';
ctx.fillRect(50, 50, 100, 100);
const bitmap = canvas.transferToImageBitmap();
self.postMessage(bitmap, bitmap);
const blob = new Blob([document.getElementById('myWorker').textContent]);
const worker = new Worker(URL.createObjectURL(blob));
worker.addEventListener('message', msg => {
const outputCtx = document.getElementById("canvas").getContext('2d');
outputCtx.drawImage(, 0, 0);