dom/canvas/test/webgl-conf/checkout/conformance/extensions/webgl-compressed-texture-size-limit.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>WebGL compressed texture size limit 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 <script src="../../js/tests/webgl-compressed-texture-size-limit.js"></script>
  16 </head>
  17 <body>
  18 <canvas id="example" width="32" height="32" style="width: 40px; height: 40px;"></canvas>
  19 <div id="description"></div>
  20 <div id="console"></div>
  21 <script>
  22 "use strict";
  23 enableJSTestPreVerboseLogging();
  24 description("Checks size limit of the webgl compressed textures")
  25
  26 // ArrayBuffers can be at most 4GB (minus 1 byte), but any allocations larger than 1 GB are unreliable in practice. So limit allocations to 1 GB.
  27 // Textures that are wide in just one dimension can still be used to test max TEXTURE_2D size limit even if we can't allocate space for huge square textures.
  28 // Use a fairly conservative limit for positive test cube map size so OOM is avoided.
  29 runCompressedTextureSizeLimitTest(Math.pow(2, 30), 2048);
  30
  31 var successfullyParsed = true;
  32 </script>
  33 </body>
  34 </html>
  35