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vector-scalar-arithmetic-inside-loop.html (2705B)

      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>GLSL vector/scalar arithmetic inside a for loop</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/glsl-conformance-test.js"></script>
     16 </head>
     17 <body>
     18 <div id="description"></div>
     19 <div id="console"></div>
     20 <script id="fShaderVectorMulAndAddInsideForLoop" type="x-shader/x-fragment">
     21 void main(){
     22  gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
     23  for (int i = 0; i < 2; i++)
     24  {
     25    gl_FragColor += (2.0 * gl_FragCoord.x);
     26  }
     27  if (gl_FragColor.g == gl_FragColor.r &&
     28      gl_FragColor.b == gl_FragColor.r &&
     29      gl_FragColor.a == gl_FragColor.r)
     30  {
     31    gl_FragColor = vec4(0, 1, 0, 1);
     32  }
     33 }
     34 </script>
     35 <script id="fShaderVectorCompoundMulAndAddInsideForLoop" type="x-shader/x-fragment">
     36 precision mediump float;
     37 
     38 void main() {
     39  gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
     40  for (int i = 0; i < 2; i++)
     41  {
     42    float x = gl_FragCoord.x;
     43    gl_FragColor = gl_FragColor + (x *= 2.0);
     44  }
     45  if (gl_FragColor.g == gl_FragColor.r &&
     46      gl_FragColor.b == gl_FragColor.r &&
     47      gl_FragColor.a == gl_FragColor.r)
     48  {
     49    gl_FragColor = vec4(0, 1, 0, 1);
     50  }
     51 }
     52 </script>
     53 <script id="fShaderVectorCompoundDivAndAddInsideForLoop" type="x-shader/x-fragment">
     54 precision mediump float;
     55 
     56 void main() {
     57  gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);
     58  for (int i = 0; i < 2; i++)
     59  {
     60    float x = gl_FragCoord.x;
     61    gl_FragColor = gl_FragColor + (x /= 2.0);
     62  }
     63  if (gl_FragColor.g == gl_FragColor.r &&
     64      gl_FragColor.b == gl_FragColor.r &&
     65      gl_FragColor.a == gl_FragColor.r)
     66  {
     67    gl_FragColor = vec4(0, 1, 0, 1);
     68  }
     69 }
     70 </script>
     71 <script type="text/javascript">
     72 "use strict";
     73 description();
     74 
     75 // See http://crbug.com/772651
     76 
     77 GLSLConformanceTester.runRenderTests([
     78 {
     79  fShaderId: 'fShaderVectorMulAndAddInsideForLoop',
     80  fShaderSuccess: true,
     81  linkSuccess: true,
     82  passMsg: "Adding a scalar to a vector inside for loop should work."
     83 },
     84 {
     85  fShaderId: 'fShaderVectorCompoundMulAndAddInsideForLoop',
     86  fShaderSuccess: true,
     87  linkSuccess: true,
     88  passMsg: "Adding a scalar (target of a compound assignment/multiplication operation) to a vector inside for loop should work."
     89 },
     90 {
     91  fShaderId: 'fShaderVectorCompoundDivAndAddInsideForLoop',
     92  fShaderSuccess: true,
     93  linkSuccess: true,
     94  passMsg: "Adding a scalar (target of a compound assignment/division operation) to a vector inside for loop should work."
     95 }
     96 ]);
     97 </script>
     98 </body>
     99 </html>