File: 2d.gradient.interpolate.vertical.html

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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<meta charset="UTF-8">
<title>OffscreenCanvas test: 2d.gradient.interpolate.vertical</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>

<h1>2d.gradient.interpolate.vertical</h1>
<p class="desc"></p>


<script>
var t = async_test("");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
    throw reason;
});
t.step(function() {

  var canvas = new OffscreenCanvas(100, 50);
  var ctx = canvas.getContext('2d');

  var g = ctx.createLinearGradient(0, 0, 0, 50);
  g.addColorStop(0, '#ff0');
  g.addColorStop(1, '#00f');
  ctx.fillStyle = g;
  ctx.fillRect(0, 0, 100, 50);
  _assertPixelApprox(canvas, 50,12, 191,191,63,255, 10);
  _assertPixelApprox(canvas, 50,25, 127,127,127,255, 5);
  _assertPixelApprox(canvas, 50,37, 63,63,191,255, 10);
  t.done();

});
</script>