reftest_worker_grid.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">

<html class="reftest-wait">

<link rel="match" href="{{ reference_file }}">

{% if fuzzy %}<meta name=fuzzy content="{{ fuzzy }}">

{% endif %}

{% if timeout %}<meta name="timeout" content="{{ timeout }}">

{% endif %}

<title>Canvas test: {{ name }}</title>

<h1 style="font-size: 20px;">{{ name }}</h1>

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

{% if notes %}<p class="notes">{{ notes }}{% endif %}

<script>pending_tests = {{ worker_variants | length }};</script>

<div style="display: grid; grid-gap: 4px;

            grid-template-columns: repeat({{ grid_width }}, max-content);

            font-size: 13px; text-align: center;">

{% for variant in worker_variants %}

<span>

  {% for variant_name in variant.grid_variant_names %}

  <div>{{ variant_name }}</div>

  {% endfor %}

  <canvas id="canvas{{ variant.id

      }}" width="{{ variant.size[0]

      }}" height="{{ variant.size[1]

      }}" style="outline: 1px solid"{{ variant.canvas }}>

    <p class="fallback">FAIL (fallback content)</p>

  </canvas>

  <script id="myWorker{{ variant.id }}" type="text/worker">

    {% set async = 'async ' if test_type == 'promise' else '' %}

    self.onmessage = {{async}}function(e) {

      const canvas = new OffscreenCanvas({{

          variant.size[0] }}, {{ variant.size[1] }});

      const ctx = canvas.getContext('2d'{%

          if variant.attributes %}, {{ variant.attributes }}{% endif %});

      {{ variant.code_worker | trim | indent(6) }}

      const bitmap = canvas.transferToImageBitmap();

      self.postMessage(bitmap, bitmap);

};

  </script>

  <script type="module">

    const blob = new Blob([document.getElementById('myWorker{{

        variant.id }}').textContent]);

    const worker = new Worker(URL.createObjectURL(blob));

    worker.addEventListener('message', msg => {

      const outputCanvas = document.getElementById('canvas{{ variant.id }}');

      const outputCtx = outputCanvas.getContext('2d'{%

          if variant.attributes %}, {{ variant.attributes }}{% endif %});

      outputCtx.drawImage(msg.data, 0, 0);

      if (--pending_tests == 0) {

        document.documentElement.classList.remove('reftest-wait');

});

    worker.postMessage(null);

  </script>

</span>

{% endfor %}

</div>

</html>