Content - 22eedc0812033a1ffef1ffea3d7b2fe536565b14 - aef82f3/offscreen-canvas/compositing/2d.composite.canvas.source-atop.html

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Tip revision: 7d92dbd58ac296da6fb2e24d9c9758775e873088 authored by Mike West on 06 December 2018, 10:19:53 UTC
Trusted Types: URLs should be USVString, not DOMString.

Tip revision: 7d92dbd

2d.composite.canvas.source-atop.html

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

<h1>2d.composite.canvas.source-atop</h1>
<p class="desc"></p>


<script>
var t = async_test("");
t.step(function() {

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


var offscreenCanvas2 = new OffscreenCanvas(offscreenCanvas.width, offscreenCanvas.height);
var ctx2 = offscreenCanvas2.getContext('2d');
var promise = new Promise(function(resolve, reject) {
    var xhr = new XMLHttpRequest();
    xhr.open("GET", '/images/yellow75.png');
    xhr.responseType = 'blob';
    xhr.send();
    xhr.onload = function() {
        resolve(xhr.response);
    };
});
promise.then(function(response) {
    ctx2.drawImage(response, 0, 0);
    ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = 'source-atop';
    ctx.drawImage(offscreenCanvas2, 0, 0);
    _assertPixelApprox(offscreenCanvas, 50,25, 191,255,64,128, "50,25", "191,255,64,128", 5);
});

t.done();

});
</script>

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