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35 lines
1.3 KiB
HTML
35 lines
1.3 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.imageData.create1.initial</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.imageData.create1.initial</h1>
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<p class="desc">createImageData(imgdata) returns transparent black data of the right size</p>
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<script>
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var t = async_test("createImageData(imgdata) returns transparent black data of the right size");
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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 = '#0f0';
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ctx.fillRect(0, 0, 100, 50);
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var imgdata1 = ctx.getImageData(0, 0, 10, 20);
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var imgdata2 = ctx.createImageData(imgdata1);
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_assertSame(imgdata2.data.length, imgdata1.data.length, "imgdata2.data.length", "imgdata1.data.length");
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_assertSame(imgdata2.width, imgdata1.width, "imgdata2.width", "imgdata1.width");
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_assertSame(imgdata2.height, imgdata1.height, "imgdata2.height", "imgdata1.height");
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var isTransparentBlack = true;
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for (var i = 0; i < imgdata2.data.length; ++i)
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if (imgdata2.data[i] !== 0)
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isTransparentBlack = false;
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_assert(isTransparentBlack, "isTransparentBlack");
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t.done();
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});
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</script>
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