2d.imageData.put.basic.rgba.float16.html

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

<meta charset="UTF-8">

<title>OffscreenCanvas test: 2d.imageData.put.basic.rgba.float16</title>

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

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

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

<h1>2d.imageData.put.basic.rgba.float16</h1>

<p class="desc">putImageData() puts 16-bit floating point image data from getImageData() onto the canvas</p>

<script>

var t = async_test("putImageData() puts 16-bit floating point image data from getImageData() onto the canvas");

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', {colorSpace: "srgb", colorType: "float16"});

  ctx.fillStyle = 'color(display-p3 1 0 0)';

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

  var imgdata = ctx.getImageData(0, 0, 100, 50, {colorSpace:"srgb", pixelFormat:"rgba-float16"});

  ctx.fillStyle = '#f00';

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

  ctx.putImageData(imgdata, 0, 0);

  var pixel = ctx.getImageData(0, 0, 1, 1, {colorSpace:"display-p3", pixelFormat:"rgba-float16"});

  assert_approx_equals(pixel.data[0], 1, 0.01);

  assert_approx_equals(pixel.data[1], 0, 0.01);

  assert_approx_equals(pixel.data[2], 0, 0.01);

  assert_approx_equals(pixel.data[3], 1, 0.01);

  t.done();

});

</script>