<!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.ctm.ctx-filter-expected.html">
<title>Canvas test: 2d.layer.ctm.ctx-filter</title>
<h1>2d.layer.ctm.ctx-filter</h1>
<p class="desc">Checks that parent transforms don't affect 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.fillStyle = 'grey';
ctx.translate(30, 90);
ctx.scale(2, 2);
ctx.rotate(Math.PI / 2);
// The transform doesn't apply to context filter on normal draw calls.
ctx.save();
ctx.filter = 'drop-shadow(10px 10px 0px red)';
ctx.fillRect(-30, -5, 60, 10);
ctx.restore();
// Likewise, the transform doesn't apply to context filter applied on layer.
ctx.save();
ctx.filter = 'drop-shadow(10px 10px 0px green)';
ctx.beginLayer();
ctx.fillRect(-30, -25, 60, 10);
ctx.endLayer();
ctx.restore();
// Filters inside layers aren't affected by transform either.
ctx.beginLayer();
ctx.filter = 'drop-shadow(5px 5px 0px blue)';
ctx.fillRect(-30, -45, 60, 10);
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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