1849704-1.html - mozsearch

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<!DOCTYPE html>

<html>

<head>

  <meta charset="utf-8">

  <title>TransferToImageBitmap</title>

</head>

<body>

  <div id="description"></div>

  <div id="console"></div>

  <script id='myWorker' type='text/worker'>

  self.onmessage = function(e) {

      var canvas = new OffscreenCanvas(128, 128);

      var gl = canvas.getContext("webgl2");

      gl.clearColor(1.0, 1.0, 0.0, 1.0);

      gl.clear(gl.COLOR_BUFFER_BIT);

      var image = canvas.transferToImageBitmap();

      self.postMessage({ bitmap: image },

                       [ image ]);

};

  </script>

  <script>

    var blob = new Blob([document.getElementById('myWorker').textContent]);

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

    worker.onmessage = function (msg) {

      try { worker.postMessage('Start worker'); } catch (e) { }

};

    try { worker.postMessage('Start worker'); } catch (e) { }

  </script>

</body>

</html>