dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/gradient-in-discontinuous-loop.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>Short circuit in loop condition 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 id="vertex-shader" type="x-shader/x-vertex">#version 300 es
  20   precision highp float;
  21   in vec4 aPosition;
  22
  23   void main() {
  24     gl_Position = aPosition;
  25   }
  26 </script>
  27 <script id="fragment-shader" type="x-shader/x-fragment">#version 300 es
  28 precision highp float;
  29 precision highp int;
  30
  31 uniform vec4      iMouse;
  32 uniform sampler2D iChannel0;
  33
  34 float map(float p)
  35 {
  36     return texture(iChannel0, vec2(p, p), 0.0).y;
  37 }
  38
  39 out vec4 outColor;
  40
  41 void main(void)
  42 {
  43     float sum = 0.0;
  44
  45     for(int i=0; i<1000; i++)
  46     {
  47         if( sum > 0.99 ) break;
  48                 float p = iMouse.x + gl_FragCoord.x;
  49         sum = map(p);
  50     }
  51
  52     outColor = vec4(sum);
  53 }
  54 </script>
  55 <script type="text/javascript">
  56 "use strict";
  57 description("Test an HLSL compiler freeze on a gradient inside a discontinuous loop.");
  58
  59 var wtu = WebGLTestUtils;
  60 var gl = wtu.create3DContext(undefined, undefined, 2);
  61 wtu.setupUnitQuad(gl);
  62
  63 if (!gl) {
  64     testFailed("context does not exist");
  65 } else {
  66     var program = wtu.setupProgram(gl, ["vertex-shader", "fragment-shader"], ['aPosition'], undefined, true);
  67     if (!program) {
  68         testFailed('Program compilation failed');
  69     }
  70 }
  71 var successfullyParsed = true;
  72 finishTest();
  73 </script>
  74 </body>
  75 </html>