glsl-function-atan.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 atan 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 atan = Math.atan; // shorthand 34 35 GLSLGenerator.runReferenceImageTest({ 36 feature: "atan", 37 args: "$(type) value", 38 testFunc: "$(func)($(type))", 39 gridRes: 8, 40 tolerance: 4, 41 extra: piConstants, 42 tests: [ 43 { 44 source: ["$(output) = vec4(", 45 " $(func)($(input).x * 8.0 - 4.0) / k2PI + 0.5,", 46 " 0.5,", 47 " 0,", 48 " 1);"].join("\n"), 49 generator: function(x, y, z, w) { 50 return [ atan(x * 8.0 - 4.0) / k2PI + 0.5, 51 0.5, 52 0, 53 1 ]; 54 }, 55 }, 56 { 57 source: ["$(output) = vec4(", 58 " $(func)($(input).xy * 8.0 - vec2(4, 4)) / k2PI + vec2(0.5, 0.5),", 59 " 0, 1);"].join("\n"), 60 generator: function(x, y, z, w) { 61 return [ atan(x * 8.0 - 4) / k2PI + 0.5, 62 atan(y * 8.0 - 4) / k2PI + 0.5, 63 0, 64 1 ]; 65 }, 66 }, 67 { 68 source: ["$(output) = vec4(", 69 " $(func)($(input).xyz * 8.0 - vec3(4, 4, 4)) / k2PI + vec3(0.5, 0.5, 0.5),", 70 " 1);"].join("\n"), 71 generator: function(x, y, z, w) { 72 return [ atan(x * 8.0 - 4) / k2PI + 0.5, 73 atan(y * 8.0 - 4) / k2PI + 0.5, 74 atan(z * 8.0 - 4) / k2PI + 0.5, 75 1 ]; 76 }, 77 }, 78 { 79 source: ["$(output) = ", 80 " $(func)($(input) * 8.0 - vec4(4, 4, 4, 4)) / k2PI + vec4(0.5, 0.5, 0.5, 0.5);", 81 ].join("\n"), 82 generator: function(x, y, z, w) { 83 return [ atan(x * 8.0 - 4) / k2PI + 0.5, 84 atan(y * 8.0 - 4) / k2PI + 0.5, 85 atan(z * 8.0 - 4) / k2PI + 0.5, 86 atan(w * 8.0 - 4) / k2PI + 0.5 ]; 87 }, 88 }, 89 ] 90 }); 91 var successfullyParsed = true; 92 </script> 93 </body> 94 </html>