<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.shadow.alpha.4</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/2dcontext/resources/canvas-tests.js"></script>

<h1>2d.shadow.alpha.4</h1>
<p class="desc">Shadows with alpha components are correctly affected by globalAlpha</p>


<script>
var t = async_test("Shadows with alpha components are correctly affected by globalAlpha");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
    throw reason;
});
t.step(function() {

var offscreenCanvas = new OffscreenCanvas(100, 50);
var ctx = offscreenCanvas.getContext('2d');

ctx.fillStyle = '#f00';
ctx.fillRect(0, 0, 100, 50);
ctx.fillStyle = '#f00'; // (work around broken Firefox globalAlpha caching)
ctx.shadowColor = 'rgba(0, 0, 255, 0.707)';
ctx.shadowOffsetY = 50;
ctx.globalAlpha = 0.707;
ctx.fillRect(0, -50, 100, 50);
_assertPixelApprox(offscreenCanvas, 50,25, 127,0,127,255, "50,25", "127,0,127,255", 2);
t.done();

});
</script>