<!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.global-states.filter.alpha.shadow-expected.html">
<title>Canvas test: 2d.layer.global-states.filter.alpha.shadow</title>
<h1>2d.layer.global-states.filter.alpha.shadow</h1>
<p class="desc">Checks that layers with filters correctly use global render states.</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.fillStyle = 'rgba(0, 0, 255, 1)';

    var circle = new Path2D();
    circle.arc(90, 90, 45, 0, 2 * Math.PI);
    ctx.fill(circle);

    ctx.globalAlpha = 0.5;
    ctx.shadowOffsetX = -10;
    ctx.shadowOffsetY = 10;
    ctx.shadowColor = 'rgba(255, 165, 0, 0.5)';

    ctx.beginLayer([
        {filter: 'colorMatrix', values: [0.393, 0.769, 0.189, 0, 0,
                                         0.349, 0.686, 0.168, 0, 0,
                                         0.272, 0.534, 0.131, 0, 0,
                                         0, 0, 0, 1, 0]},
        {filter: 'componentTransfer',
            funcA: {type: "table", tableValues: [0, 0.7]}},
        {filter: 'dropShadow', dx: 5, dy: 5, floodColor: '#81e'}]);

    ctx.fillStyle = 'rgba(200, 0, 0, 1)';
    ctx.fillRect(50, 50, 75, 50);
    ctx.fillStyle = 'rgba(0, 200, 0, 1)';
    ctx.fillRect(70, 70, 75, 50);

    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>
