<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Test for OffscreenCanvas TransferToImageBitmap</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../js/js-test-pre.js"></script>
<script src="../../js/webgl-test-utils.js"></script>
<script src="../../js/tests/tex-image-and-sub-image-utils.js"></script>
<script src="../../js/tests/offscreencanvas-transfer-image-bitmap.js"></script>
</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("webgl");
      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>
    "use strict";
    description("This test ensures that the transferToImageBitmap function of OffscreenCanvas webgl context is functional.");
    if (!window.OffscreenCanvas) {
        testPassed("No OffscreenCanvas support");
        finishTest();
    } else {
      var blob = new Blob([document.getElementById('myWorker').textContent]);
      var worker = new Worker(URL.createObjectURL(blob));

      worker.onmessage = function(msg) {
          testTransferToImageBitmap("webgl", msg.data.bitmap);
          finishTest();
      }
      worker.postMessage("Start Worker");
    }
  </script>
</body>
</html>
