| <!-- |
| Copyright (c) 2019 The Khronos Group Inc. |
| Use of this source code is governed by an MIT-style license that can be |
| found in the LICENSE.txt file. |
| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>GLSL cos function test</title> |
| <link rel="stylesheet" href="../../../resources/js-test-style.css"/> |
| <link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/> |
| <script src="../../../js/js-test-pre.js"></script> |
| <script src="../../../js/webgl-test-utils.js"> </script> |
| <script src="../../../js/glsl-generator.js"> </script> |
| </head> |
| <body> |
| <div id="description"></div> |
| <div id="console"></div> |
| <script> |
| "use strict"; |
| |
| var piConstants = [ |
| "const float kPI = 3.14159265358979323846;", |
| "const float kHalfPI = (kPI * 0.5);", |
| "const float k2PI = (kPI * 2.0);" |
| ].join("\n"); |
| |
| var kPI = Math.PI; |
| var kHalfPI = Math.PI * 0.5; |
| var k2PI = Math.PI * 2.0; |
| var cos = Math.cos; // shorthand |
| |
| GLSLGenerator.runReferenceImageTest({ |
| feature: "cos", |
| args: "$(type) value", |
| testFunc: "$(func)($(type))", |
| gridRes: 8, |
| tolerance: 3, |
| extra: piConstants, |
| tests: [ |
| { |
| source: ["$(output) = vec4(", |
| " $(func)($(input).x * kHalfPI + kHalfPI),", |
| " $(func)($(input).y * kHalfPI),", |
| " 0,", |
| " 1);"].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ cos(x * kHalfPI + kHalfPI), |
| cos(y * kHalfPI), |
| 0, |
| 1 ]; |
| }, |
| }, |
| { |
| source: ["$(output) = vec4(", |
| " $(func)($(input).xy * vec2(kPI, k2PI)) * 0.5 + vec2(0.5, 0.5),", |
| " 0, 1);"].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ cos(x * kPI) * 0.5 + 0.5, |
| cos(y * k2PI) * 0.5 + 0.5, |
| 0, |
| 1 ]; |
| }, |
| }, |
| { |
| // FIXME: for some reason, this test requires a higher tolerance when run in a vertex shader. |
| source: ["$(output) = vec4(", |
| " $(func)($(input).xyz * vec3(kPI, k2PI, 4.0)) * ", |
| " 0.5 + vec3(0.5, 0.5, 0.5),", |
| " 1);"].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ cos(x * kPI) * 0.5 + 0.5, |
| cos(y * k2PI) * 0.5 + 0.5, |
| cos(z * 4.0) * 0.5 + 0.5, |
| 1 ]; |
| }, |
| tolerance: 7, |
| }, |
| { |
| source: ["$(output) = ", |
| " $(func)($(input) * vec4(k2PI, 4.0, kHalfPI, kPI)) *", |
| " 0.5 + vec4(0.5, 0.5, 0.5, 1);", |
| ].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ cos(x * k2PI) * 0.5 + 0.5, |
| cos(y * 4.0) * 0.5 + 0.5, |
| cos(z * kHalfPI) * 0.5 + 0.5, |
| cos(w * kPI) * 0.5 + 1.0 ]; |
| }, |
| }, |
| ] |
| }); |
| var successfullyParsed = true; |
| </script> |
| </body> |
| </html> |
| |
