2d.composite.canvas.source-atop.html

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This WPT test may be referenced by the following Test IDs:
- /html/canvas/element/compositing/2d.composite.canvas.source-atop.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->

<meta charset="UTF-8">

<title>Canvas test: 2d.composite.canvas.source-atop</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/html/canvas/resources/canvas-tests.js"></script>

<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">

<body class="show_output">

<h1>2d.composite.canvas.source-atop</h1>

<p class="desc"></p>

<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.canvas.source-atop.png" class="output expected" id="expected" alt="">

<ul id="d"></ul>

<script>

promise_test(async t => {

  var canvas = document.getElementById('c');

  var ctx = canvas.getContext('2d');

  ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';

  ctx.fillRect(0, 0, 100, 50);

  ctx.globalCompositeOperation = 'source-atop';

  const canvas2 = document.createElement('canvas');

  canvas2.width = canvas.width;

  canvas2.height = canvas.height;

  const ctx2 = canvas2.getContext('2d');

  const response = await fetch('/images/yellow75.png')

  const blob = await response.blob();

  const bitmap = await createImageBitmap(blob);

  ctx2.drawImage(bitmap, 0, 0);

  ctx.drawImage(canvas2, 0, 0);

  _assertPixelApprox(canvas, 50,25, 191,255,64,128, 5);

}, "");

</script>