2d.layer.nested-ctx-filter.w.html | Explore in Territory

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<html class="reftest-wait">
<link rel="match" href="2d.layer.nested-ctx-filter-expected.html">
<title>Canvas test: 2d.layer.nested-ctx-filter</title>
<h1>2d.layer.nested-ctx-filter</h1>
<p class="desc">Tests nested canvas layers with context filters.</p>
<canvas id="canvas" width="200" height="200">
  <p class="fallback">FAIL (fallback content)</p>
</canvas>
<script id='myWorker' type='text/worker'>
  self.onmessage = function(e) {
    const canvas = new OffscreenCanvas(200, 200);
    const ctx = canvas.getContext('2d');

    ctx.filter = 'drop-shadow(20px 20px 0px red)';
    ctx.beginLayer();
    ctx.filter = 'drop-shadow(10px 10px 0px green)';
    ctx.beginLayer();
    ctx.filter = 'drop-shadow(5px 5px 0px blue)';
    ctx.fillStyle = 'grey';
    ctx.fillRect(10, 10, 100, 100);
    ctx.endLayer();
    ctx.endLayer();

    const bitmap = canvas.transferToImageBitmap();
    self.postMessage(bitmap, bitmap);
  };
</script>
<script>
  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(msg.data, 0, 0);
    document.documentElement.classList.remove("reftest-wait");
  });
  worker.postMessage(null);
</script>
</html>

chromium/third_party/blink/web_tests/external/wpt/html/canvas/offscreen/layers/2d.layer.nested-ctx-filter.w.html