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36 lines
1.1 KiB
HTML
36 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>Canvas test: 2d.composite.globalAlpha.range</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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<link rel="stylesheet" href="/common/canvas-tests.css">
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<body class="show_output">
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<h1>2d.composite.globalAlpha.range</h1>
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<p class="desc"></p>
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<p class="output">Actual output:</p>
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<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
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<ul id="d"></ul>
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<script>
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var t = async_test("");
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_addTest(function(canvas, ctx) {
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ctx.globalAlpha = 0.5;
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var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons
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ctx.globalAlpha = 1.1;
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_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
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ctx.globalAlpha = -0.1;
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_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
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ctx.globalAlpha = 0;
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_assertSame(ctx.globalAlpha, 0, "ctx.globalAlpha", "0");
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ctx.globalAlpha = 1;
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_assertSame(ctx.globalAlpha, 1, "ctx.globalAlpha", "1");
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});
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</script>
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