| <!DOCTYPE html> |
| <!-- DO NOT EDIT! This test has been generated by tools/gentest.py. --> |
| <title>Canvas test: 2d.composite.uncovered.image.copy</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/2dcontext/resources/canvas-tests.js"></script> |
| <link rel="stylesheet" href="/2dcontext/resources/canvas-tests.css"> |
| <body class="show_output"> |
| |
| <h1>2d.composite.uncovered.image.copy</h1> |
| <p class="desc">drawImage() 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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| <p class="output">Actual output:</p> |
| <canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> |
| <p class="output expectedtext">Expected output:<p><img src="2d.composite.uncovered.image.copy.png" class="output expected" id="expected" alt=""> |
| <ul id="d"></ul> |
| <script> |
| var t = async_test("drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged."); |
| _addTest(function(canvas, ctx) { |
| |
| |
| ctx.fillStyle = 'rgba(0, 255, 255, 0.5)'; |
| ctx.fillRect(0, 0, 100, 50); |
| ctx.globalCompositeOperation = 'copy'; |
| ctx.drawImage(document.getElementById('yellow.png'), 40, 40, 10, 10, 40, 50, 10, 10); |
| _assertPixelApprox(canvas, 15,15, 0,0,0,0, "15,15", "0,0,0,0", 5); |
| _assertPixelApprox(canvas, 50,25, 0,0,0,0, "50,25", "0,0,0,0", 5); |
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| }); |
| </script> |
| <img src="/images/yellow.png" id="yellow.png" class="resource"> |
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