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<!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-filters-expected.html">
<title>Canvas test: 2d.layer.nested-filters</title>
<h1>2d.layer.nested-filters</h1>
<p class="desc">Checks that nested layers work properly when both apply filters.</p>
<canvas id="canvas" width="400" height="200">
<p class="fallback">FAIL (fallback content)</p>
</canvas>
<script id='myWorker' type='text/worker'>
self.onmessage = function(e) {
const canvas = new OffscreenCanvas(400, 200);
const ctx = canvas.getContext('2d');
ctx.beginLayer({filter: {name: 'dropShadow', dx: -20, dy: -20,
stdDeviation: 0, floodColor: 'yellow'}});
ctx.beginLayer({filter: 'drop-shadow(-10px -10px 0 blue)'});
ctx.fillStyle = 'red';
ctx.fillRect(50, 50, 100, 100);
ctx.endLayer();
ctx.endLayer();
ctx.beginLayer({filter: 'drop-shadow(20px 20px 0 blue)'});
ctx.beginLayer({filter: {name: 'dropShadow', dx: 10, dy: 10,
stdDeviation: 0, floodColor: 'yellow'}});
ctx.fillStyle = 'red';
ctx.fillRect(250, 50, 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>
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