dom/canvas/test/webgl-conf/checkout/conformance2/misc/getextension-while-pbo-bound-stability.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
   7 <!DOCTYPE html>
   8 <html>
   9 <head>
  10 <meta charset="utf-8">
  11 <title>WebGL2 getExtension while PBO bound stability conformance test.</title>
  12 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
  13 <script src="../../js/js-test-pre.js"></script>
  14 <script src="../../js/webgl-test-utils.js"></script>
  15 </head>
  16 <body>
  17 <div id="description"></div>
  18 <div id="console"></div>
  19 <script>
  20 "use strict";
  21
  22 var wtu = WebGLTestUtils;
  23
  24 function runTest(extension_name) {
  25   debug("");
  26   debug("getExtension('" + extension_name + "') while PIXEL_UNPACK_BUFFER bound should be stable");
  27
  28   var gl = wtu.create3DContext(null, undefined, 2);
  29   if (!gl) {
  30     testFailed("Fail to get a WebGL context");
  31     return;
  32   }
  33
  34   var pbo = gl.createBuffer();
  35   gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, pbo);
  36   var ext = gl.getExtension('EXT_color_buffer_float');
  37   var gl_texture_float_linear = gl.getExtension(extension_name);
  38   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Late-enable of extension should succeed");
  39   if (pbo != gl.getParameter(gl.PIXEL_UNPACK_BUFFER_BINDING)) {
  40       testFailed("Fail to maintain PIXEL_UNPACK_BUFFER binding when enabling extension " + extension_name);
  41   }
  42 }
  43
  44 function runTests() {
  45   debug("This is a regression test for <a href='https://bugs.chromium.org/p/chromium/issues/detail?id=641643'>Chromium Issue 641642</a>");
  46   runTest('EXT_color_buffer_float');
  47   runTest('OES_texture_float_linear');
  48 }
  49
  50 runTests();
  51
  52 debug("");
  53 var successfullyParsed = true;
  54 </script>
  55 <script src="../../js/js-test-post.js"></script>
  56 </body>
  57 </html>