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41 lines
1.4 KiB
HTML
41 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
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<title>OffscreenCanvas test: 2d.composite.uncovered.pattern.source-out</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/canvas-tests.js"></script>
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<h1>2d.composite.uncovered.pattern.source-out</h1>
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<p class="desc">Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.</p>
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<script>
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var t = async_test("Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.");
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t.step(function() {
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var offscreenCanvas = new OffscreenCanvas(100, 50);
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var ctx = offscreenCanvas.getContext('2d');
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ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
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ctx.fillRect(0, 0, 100, 50);
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ctx.globalCompositeOperation = 'source-out';
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var promise = new Promise(function(resolve, reject) {
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var xhr = new XMLHttpRequest();
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xhr.open("GET", '/images/yellow.png');
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xhr.responseType = 'blob';
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xhr.send();
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xhr.onload = function() {
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resolve(xhr.response);
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};
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});
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promise.then(function(response) {
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ctx.fillStyle = ctx.createPattern(response, 'no-repeat');
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ctx.fillRect(0, 50, 100, 50);
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_assertPixelApprox(offscreenCanvas, 50,25, 0,0,0,0, "50,25", "0,0,0,0", 5);
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});
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t.done();
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});
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</script>
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