dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/sampler-array-indexing.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>ESSL300 sampler array indexing rules</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="vs" type="text/plain">#version 300 es
  22 void main() {}
  23 </script>
  24 <script id="fs_constant_integer_expression" type="text/plain">#version 300 es
  25 precision mediump float;
  26 uniform sampler2D u_tex[2];
  27
  28 void main()
  29 {
  30   texture(u_tex[0], vec2(0));
  31   texture(u_tex[1], vec2(0));
  32 }
  33 </script>
  34 <script id="fs_constant_index_expression" type="text/plain">#version 300 es
  35 precision mediump float;
  36 uniform sampler2D u_tex[2];
  37
  38 void main()
  39 {
  40   for (int i = 0; i < 2; i++) {
  41     texture(u_tex[i], vec2(0));
  42   }
  43 }
  44 </script>
  45 <script id="fs_constant_integer_expression_switch" type="text/plain">#version 300 es
  46 precision mediump float;
  47 uniform sampler2D u_tex[2];
  48
  49 void main()
  50 {
  51   for (int i = 0; i < 2; i++) {
  52     switch (i) {
  53       case 0:
  54         texture(u_tex[0], vec2(0));
  55         break;
  56       case 1:
  57         texture(u_tex[1], vec2(0));
  58         break;
  59     }
  60   }
  61 }
  62 </script>
  63 <script type="application/javascript">
  64 "use strict";
  65 description();
  66 GLSLConformanceTester.runTests([
  67   {
  68     vShaderId: "vs",
  69     vShaderSuccess: true,
  70     fShaderId: "fs_constant_integer_expression",
  71     fShaderSuccess: true,
  72     linkSuccess: true,
  73     passMsg: "indexing into an array of samplers with constant-integer-expression is required",
  74   },
  75   {
  76     vShaderId: "vs",
  77     vShaderSuccess: true,
  78     fShaderId: "fs_constant_index_expression",
  79     fShaderSuccess: false,
  80     linkSuccess: false,
  81     passMsg: "indexing into an array of samplers with constant-index-expression is forbidden in essl300",
  82   },
  83   {
  84     vShaderId: "vs",
  85     vShaderSuccess: true,
  86     fShaderId: "fs_constant_integer_expression_switch",
  87     fShaderSuccess: true,
  88     linkSuccess: true,
  89     passMsg: "constant-index-expression can be converted into fs_constant_integer_expression via a switch",
  90   },
  91 ], 2);
  92 </script>
  93 </body>
  94 </html>