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52 lines
1.9 KiB
HTML
52 lines
1.9 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.object.round</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.object.round</h1>
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<p class="desc">ImageData.data rounds numbers with round-to-zero</p>
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<script>
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var t = async_test("ImageData.data rounds numbers with round-to-zero");
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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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var imgdata = ctx.getImageData(0, 0, 10, 10);
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imgdata.data[0] = 0.499;
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_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
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imgdata.data[0] = 0.5;
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_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
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imgdata.data[0] = 0.501;
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_assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1");
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imgdata.data[0] = 1.499;
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_assertSame(imgdata.data[0], 1, "imgdata.data[\""+(0)+"\"]", "1");
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imgdata.data[0] = 1.5;
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_assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
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imgdata.data[0] = 1.501;
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_assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
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imgdata.data[0] = 2.5;
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_assertSame(imgdata.data[0], 2, "imgdata.data[\""+(0)+"\"]", "2");
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imgdata.data[0] = 3.5;
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_assertSame(imgdata.data[0], 4, "imgdata.data[\""+(0)+"\"]", "4");
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imgdata.data[0] = 252.5;
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_assertSame(imgdata.data[0], 252, "imgdata.data[\""+(0)+"\"]", "252");
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imgdata.data[0] = 253.5;
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_assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254");
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imgdata.data[0] = 254.5;
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_assertSame(imgdata.data[0], 254, "imgdata.data[\""+(0)+"\"]", "254");
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imgdata.data[0] = 256.5;
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_assertSame(imgdata.data[0], 255, "imgdata.data[\""+(0)+"\"]", "255");
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imgdata.data[0] = -0.5;
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_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
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imgdata.data[0] = -1.5;
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_assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0");
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t.done();
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});
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</script>
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