dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/context-lost-worker.html

   1 <!--
   2 Copyright (c) 2019 The Khronos Group Inc.
   3 Use of this source code is governed by an MIT-style license that can be
   4 found in the LICENSE.txt file.
   5 -->
   6 <!DOCTYPE html>
   7 <html>
   8 <head>
   9 <meta charset="utf-8">
  10 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
  11 <script src="../../js/js-test-pre.js"></script>
  12 <script src="../../js/webgl-test-utils.js"></script>
  13 <script>
  14 function init()
  15 {
  16   description("Tests behavior under a lost context for OffscreenCanvas in a worker");
  17
  18   if (!window.OffscreenCanvas) {
  19     testPassed("No OffscreenCanvas support");
  20     finishTest();
  21     return;
  22   }
  23
  24   var worker = new Worker('context-lost-worker.js');
  25   worker.postMessage("Start worker");
  26   worker.onmessage = function(e) {
  27     const fn = e.data.fail ? testFailed : testPassed;
  28     fn(e.data.msg);
  29     if (e.data.finishTest) {
  30       finishTest();
  31     }
  32     return;
  33   }
  34 }
  35
  36 </script>
  37 </head>
  38 <body onload="init()">
  39 <div id="description"></div>
  40 <div id="console"></div>
  41 </body>
  42 </html>