glsl-function-cos.html (2722B)
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 cos 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 24 var piConstants = [ 25 "const float kPI = 3.14159265358979323846;", 26 "const float kHalfPI = (kPI * 0.5);", 27 "const float k2PI = (kPI * 2.0);" 28 ].join("\n"); 29 30 var kPI = Math.PI; 31 var kHalfPI = Math.PI * 0.5; 32 var k2PI = Math.PI * 2.0; 33 var cos = Math.cos; // shorthand 34 35 GLSLGenerator.runReferenceImageTest({ 36 feature: "cos", 37 args: "$(type) value", 38 testFunc: "$(func)($(type))", 39 gridRes: 8, 40 tolerance: 3, 41 extra: piConstants, 42 tests: [ 43 { 44 source: ["$(output) = vec4(", 45 " $(func)($(input).x * kHalfPI + kHalfPI),", 46 " $(func)($(input).y * kHalfPI),", 47 " 0,", 48 " 1);"].join("\n"), 49 generator: function(x, y, z, w) { 50 return [ cos(x * kHalfPI + kHalfPI), 51 cos(y * kHalfPI), 52 0, 53 1 ]; 54 }, 55 }, 56 { 57 source: ["$(output) = vec4(", 58 " $(func)($(input).xy * vec2(kPI, k2PI)) * 0.5 + vec2(0.5, 0.5),", 59 " 0, 1);"].join("\n"), 60 generator: function(x, y, z, w) { 61 return [ cos(x * kPI) * 0.5 + 0.5, 62 cos(y * k2PI) * 0.5 + 0.5, 63 0, 64 1 ]; 65 }, 66 }, 67 { 68 // FIXME: for some reason, this test requires a higher tolerance when run in a vertex shader. 69 source: ["$(output) = vec4(", 70 " $(func)($(input).xyz * vec3(kPI, k2PI, 4.0)) * ", 71 " 0.5 + vec3(0.5, 0.5, 0.5),", 72 " 1);"].join("\n"), 73 generator: function(x, y, z, w) { 74 return [ cos(x * kPI) * 0.5 + 0.5, 75 cos(y * k2PI) * 0.5 + 0.5, 76 cos(z * 4.0) * 0.5 + 0.5, 77 1 ]; 78 }, 79 tolerance: 7, 80 }, 81 { 82 source: ["$(output) = ", 83 " $(func)($(input) * vec4(k2PI, 4.0, kHalfPI, kPI)) *", 84 " 0.5 + vec4(0.5, 0.5, 0.5, 1);", 85 ].join("\n"), 86 generator: function(x, y, z, w) { 87 return [ cos(x * k2PI) * 0.5 + 0.5, 88 cos(y * 4.0) * 0.5 + 0.5, 89 cos(z * kHalfPI) * 0.5 + 0.5, 90 cos(w * kPI) * 0.5 + 1.0 ]; 91 }, 92 }, 93 ] 94 }); 95 var successfullyParsed = true; 96 </script> 97 </body> 98 </html>