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31 lines
1.1 KiB
HTML
31 lines
1.1 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.get.order.cols</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.get.order.cols</h1>
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<p class="desc">getImageData() returns leftmost columns first</p>
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<script>
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var t = async_test("getImageData() returns leftmost columns first");
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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 = '#fff';
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ctx.fillRect(0, 0, 100, 50);
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ctx.fillStyle = '#000';
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ctx.fillRect(0, 0, 2, 50);
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var imgdata = ctx.getImageData(0, 0, 10, 10);
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_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
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_assertSame(imgdata.data[Math.round(imgdata.width/2*4)], 255, "imgdata.data[Math.round(imgdata.width/2*4)]", "255");
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_assertSame(imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)], 0, "imgdata.data[Math.round((imgdata.height/2)*imgdata.width*4)]", "0");
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t.done();
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});
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</script>
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