dom/canvas/test/webgl-conf/checkout/extra/simulated-attrib-0-bug-test.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>Simulated Attrib 0 Bug Test</title>
  11 <script src="../js/js-test-pre.js"></script>
  12 <script src="../js/webgl-test-utils.js"></script>
  13 </head>
  14 <body>
  15 <div>Simulated Attrib 0 Bug Test</div>
  16 <div id="description"></div>
  17 <div id="console"></div>
  18 <script>
  19 "use strict";
  20 var wtu = WebGLTestUtils;
  21 var context = wtu.create3DContext();
  22 var program = wtu.loadStandardProgram(context);
  23
  24 context.useProgram(program);
  25 debug("This line attempts to draw with 0x7FFFFFFF triangles with attrib 0 off");
  26 debug("A buggy simulated attrib 0 impl will probably mult 0x7FFFFFFF * sizeof(vec4)");
  27 shouldBe("context.drawArrays(context.TRIANGLES, 0, 0x7fffffff);", "undefined");
  28 debug("This line attempts to draw with 0x7ffffff triangles.");
  29 debug("A buggy simulated attrib 0 impl will probably pass 0x7FFFFFF0 to glBufferData and then not check that it failed");
  30 shouldBe("context.drawArrays(context.TRIANGLES, 0, 0x7ffffff);", "undefined");
  31 debug("")
  32 debug("NOTE!: You may not see any manifestation here. Check your impl for these issues");
  33 </script>
  34 </body>
  35 </html>
  36