dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/reciprocal-sqrt-of-sum-of-squares-crash.html

   1 <!--
   2 Copyright (c) 2021 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>Shader identified as containing reciprocal square root of sum of squares should not crash</title>
  12 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
  13 <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
  14 <script src="../../js/js-test-pre.js"></script>
  15 <script src="../../js/webgl-test-utils.js"></script>
  16 <script src="../../js/glsl-conformance-test.js"></script>
  17 </head>
  18 <body>
  19 <div id="description"></div>
  20 <div id="console"></div>
  21 <script id="vshader" type="x-shader/x-vertex">#version 300 es
  22 void main() {
  23    gl_Position = vec4(0.0, 0.0, 0.0, 0.0);
  24 }
  25 </script>
  26 <script id="fshader" type="x-shader/x-fragment">#version 300 es
  27 precision highp float;
  28
  29 #define CRASH 1
  30
  31 out vec4 fragmentColor;
  32 void main()
  33 {
  34     vec2 p = gl_FragCoord.xy;
  35     // This expression meets the requirement of being the reciprocal
  36     // square root of a sum of squares.
  37     float d = 1.0 / length(p);
  38 #if CRASH
  39     if (p.x > 0.0)
  40     {
  41         d *= 2.0;
  42     }
  43 #endif
  44     fragmentColor = vec4(d);
  45 }
  46 </script>
  47 <script type="application/javascript">
  48 "use strict";
  49 description();
  50 debug('Regression test for <a href="https://crbug.com/1079309">crbug.com/1079309</a>');
  51 const wtu = WebGLTestUtils;
  52 const tests = [
  53     {
  54         vShaderSource: wtu.getScript('vshader'),
  55         fShaderSource: wtu.getScript('fshader'),
  56         vShaderSuccess: true,
  57         fShaderSuccess: true,
  58         linkSuccess: true,
  59         passMsg: 'Shader containing expression that driver recognizes as reciprocal square root of sum of squares should compile and link'
  60     }
  61 ];
  62
  63 GLSLConformanceTester.runTests(tests, 2);
  64 </script>
  65 </body>
  66 </html>