2d.filter.layers.componentTransfer.gamma.html

<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<link rel="match" href="2d.filter.layers.componentTransfer.gamma-expected.html">
<meta name=fuzzy content="maxDifference=0-2; totalPixels=0-500">
<title>Canvas test: 2d.filter.layers.componentTransfer.gamma</title>
<h1>2d.filter.layers.componentTransfer.gamma</h1>
<p class="desc">Test pixels on CanvasFilter() componentTransfer with gamma type</p>
<canvas id="canvas" width="100" height="100">
  <p class="fallback">FAIL (fallback content)</p>
</canvas>
<script>
  const canvas = document.getElementById("canvas");
  const ctx = canvas.getContext('2d');

  const amplitudes = [2, 1.1, 0.5];
  const exponents = [5, 3, 1];
  const offsets = [0.25, 0, 0.5];
  ctx.beginLayer({filter: {name: 'componentTransfer',
      funcR: {type: 'gamma', amplitude: amplitudes[0],
        exponent: exponents[0], offset: offsets[0]},
      funcG: {type: 'gamma', amplitude: amplitudes[1],
        exponent: exponents[1], offset: offsets[1]},
      funcB: {type: 'gamma', amplitude: amplitudes[2],
        exponent: exponents[2], offset: offsets[2]},
  }});

  const inputColors = [
      [255, 255, 255],
      [0, 0, 0],
      [127, 0, 34],
      [252, 186, 3],
      [50, 68, 87],
  ];

  for (let i = 0 ; i < inputColors.length ; ++i) {
      const color = inputColors[i];
      ctx.fillStyle = `rgb(${color[0]}, ${color[1]}, ${color[2]})`;
      ctx.fillRect(i * 10, i * 10, 10, 10);
  }
  ctx.endLayer();
</script>

chromium/third_party/blink/web_tests/external/wpt/html/canvas/element/filters/2d.filter.layers.componentTransfer.gamma.html