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| /* |
| ** Copyright (c) 2012 The Khronos Group Inc. |
| ** |
| ** Permission is hereby granted, free of charge, to any person obtaining a |
| ** copy of this software and/or associated documentation files (the |
| ** "Materials"), to deal in the Materials without restriction, including |
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| --> |
| |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>GLSL atan-xy function test</title> |
| <link rel="stylesheet" href="../../../resources/js-test-style.css"/> |
| <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/> |
| <script src="../../../resources/js-test-pre.js"></script> |
| <script src="../../resources/webgl-test.js"> </script> |
| <script src="../../resources/webgl-test-utils.js"> </script> |
| <script src="../../resources/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 atan2 = Math.atan2; // shorthand |
| |
| GLSLGenerator.runReferenceImageTest({ |
| feature: "atan", |
| args: "$(type) y, $(type) x", |
| testFunc: "$(func)($(type), $(type))", |
| gridRes: 8, |
| tolerance: 5, |
| extra: piConstants, |
| tests: [ |
| { |
| source: ["$(output) = vec4(", |
| " $(func)($(input).x + 0.1, $(input).y) / k2PI + 0.5,", |
| " 0,", |
| " 0,", |
| " 1);"].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ atan2(x + 0.1, y) / k2PI + 0.5, |
| 0, |
| 0, |
| 1 ]; |
| }, |
| }, |
| { |
| source: ["$(output) = vec4(", |
| " $(func)($(input).xy + vec2(0.1, 0.1), $(input).yx) / ", |
| " k2PI + vec2(0.5, 0.5),", |
| " 0, 1);"].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ atan2(x + 0.1, y) / k2PI + 0.5, |
| atan2(y + 0.1, x) / k2PI + 0.5, |
| 0, |
| 1 ]; |
| }, |
| }, |
| { |
| source: ["$(output) = vec4(", |
| " $(func)($(input).xyz + vec3(0.1, 0.1, 0.1), $(input).yzx) / ", |
| " k2PI + vec3(0.5, 0.5, 0.5),", |
| " 1);"].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ atan2(x + 0.1, y) / k2PI + 0.5, |
| atan2(y + 0.1, z) / k2PI + 0.5, |
| atan2(z + 0.1, x) / k2PI + 0.5, |
| 1 ]; |
| }, |
| }, |
| { |
| source: ["$(output) = ", |
| " $(func)($(input) + vec4(0.1, 0.1, 0.1, 0.1), $(input).wzyx) / ", |
| " k2PI + vec4(0.5, 0.5, 0.5, 0.5);", |
| ].join("\n"), |
| generator: function(x, y, z, w) { |
| return [ atan2(x + 0.1, w) / k2PI + 0.5, |
| atan2(y + 0.1, z) / k2PI + 0.5, |
| atan2(z + 0.1, y) / k2PI + 0.5, |
| atan2(w + 0.1, x) / k2PI + 0.5 ]; |
| }, |
| }, |
| ] |
| }); |
| var successfullyParsed = true; |
| </script> |
| </body> |
| </html> |
| |
