dom/canvas/test/webgl-conf/checkout/conformance/glsl/functions/glsl-function-sign.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>GLSL sign function test</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-generator.js"> </script>
  17 </head>
  18 <body>
  19 <div id="description"></div>
  20 <div id="console"></div>
  21 <script>
  22 "use strict";
  23 GLSLGenerator.runFeatureTest({
  24   feature: "sign",
  25   testFunc: "$(func)($(arg0))",
  26   emuFunc: ["float $(func)_base(float value) {",
  27             "  if (value == 0.0) return 0.0;",
  28             "  return value > 0.0 ? 1.0 : -1.0;",
  29             "}"].join("\n"),
  30   gridRes: 4,
  31   tests: [
  32     ["$(output) = vec4(",
  33      "    $(func)($(input).x * 2.0 - 1.0) * 0.5 + 0.5,",
  34      "    0.5,",
  35      "    0,",
  36      "    1);"].join("\n"),
  37     ["$(output) = vec4(",
  38      "    $(func)($(input).xy * 2.0 - vec2(1, 1)) * 0.5 + vec2(0.5, 0.5),",
  39      "    0, 1);"].join("\n"),
  40     ["$(output) = vec4(",
  41      "    $(func)($(input).xyz * 2.0 - vec3(1, 1, 1)) * 0.5 + ",
  42      "       vec3(0.5, 0.5, 0.5),",
  43      "    1);"].join("\n"),
  44     ["$(output) = ",
  45      "    $(func)($(input) * 2.0 - vec4(1, 1, 1, 1)) * 0.5 + ",
  46      "       vec4(0.5, 0.5, 0.5, 0.5);"].join("\n")
  47   ]
  48 });
  49 var successfullyParsed = true;
  50 </script>
  51 </body>
  52 </html>