dom/canvas/test/webgl-conf/checkout/conformance/offscreencanvas/offscreencanvas-transfer-image-bitmap.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 <title>Test for OffscreenCanvas TransferToImageBitmap</title>
  11 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
  12 <script src="../../js/js-test-pre.js"></script>
  13 <script src="../../js/webgl-test-utils.js"></script>
  14 <script src="../../js/tests/tex-image-and-sub-image-utils.js"></script>
  15 <script src="../../js/tests/offscreencanvas-transfer-image-bitmap.js"></script>
  16 </head>
  17 <body>
  18   <div id="description"></div>
  19   <div id="console"></div>
  20   <script id='myWorker' type='text/worker'>
  21   self.onmessage = function(e) {
  22       var canvas = new OffscreenCanvas(128, 128);
  23       var gl = canvas.getContext("webgl");
  24       gl.clearColor(1.0, 1.0, 0.0, 1.0);
  25       gl.clear(gl.COLOR_BUFFER_BIT);
  26       var image = canvas.transferToImageBitmap();
  27
  28       self.postMessage({ bitmap: image },
  29                        [ image ]);
  30   };
  31   </script>
  32   <script>
  33     "use strict";
  34     description("This test ensures that the transferToImageBitmap function of OffscreenCanvas webgl context is functional.");
  35     if (!window.OffscreenCanvas) {
  36         testPassed("No OffscreenCanvas support");
  37         finishTest();
  38     } else {
  39       var blob = new Blob([document.getElementById('myWorker').textContent]);
  40       var worker = new Worker(URL.createObjectURL(blob));
  41
  42       worker.onmessage = function(msg) {
  43           testTransferToImageBitmap("webgl", msg.data.bitmap);
  44           finishTest();
  45       }
  46       worker.postMessage("Start Worker");
  47     }
  48   </script>
  49 </body>
  50 </html>