| <!DOCTYPE html> |
| <html> |
| <!-- |
| Copyright 2011 The Closure Library Authors. All Rights Reserved. |
| |
| Use of this source code is governed by the Apache License, Version 2.0. |
| See the COPYING file for details. |
| |
| Author: nicksantos@google.com (Nick Santos) |
| --> |
| <head> |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> |
| <title>Closure Performance Tests - Vector math</title> |
| <link rel="stylesheet" type="text/css" |
| href="../testing/performancetable.css"/> |
| <script src="../base.js"></script> |
| <script> |
| goog.require('goog.crypt'); |
| goog.require('goog.string'); |
| goog.require('goog.testing.PerformanceTable'); |
| goog.require('goog.testing.jsunit'); |
| goog.require('goog.vec.Vec4'); |
| </script> |
| </head> |
| <body> |
| <h1>Closure Performance Tests - Vector Math</h1> |
| <p> |
| <strong>User-agent:</strong> |
| <script>document.write(navigator.userAgent);</script> |
| </p> |
| <div id="perfTable"></div> |
| <hr> |
| |
| <script> |
| var table = new goog.testing.PerformanceTable( |
| goog.dom.getElement('perfTable')); |
| var createVec4FromValues = goog.vec.Vec4.createFromValues; |
| var scaleVec4 = goog.vec.Vec4.scale; |
| |
| var negateVec4ByScaling = function(v, result) { |
| return scaleVec4(v, -1, result); |
| }; |
| |
| var negateVec4ByNegation = function(v, result) { |
| result[0] = -v[0]; |
| result[1] = -v[1]; |
| result[2] = -v[2]; |
| result[3] = -v[3]; |
| return result; |
| }; |
| |
| var negateVec4ByMultiplication = function(v, result) { |
| result[0] = -1 * v[0]; |
| result[1] = -1 * v[1]; |
| result[2] = -1 * v[2]; |
| result[3] = -1 * v[3]; |
| return result; |
| }; |
| |
| function createRandomVec4() { |
| return createVec4FromValues( |
| Math.random(), |
| Math.random(), |
| Math.random(), |
| Math.random()); |
| } |
| |
| function testNegateVec4ByScaling() { |
| var v = createRandomVec4(); |
| for (var i = 0; i < 2000000; i++) { |
| // Warm the trace tree to see if that makes a difference. |
| scaleVec4(v, 1, v); |
| } |
| |
| table.run( |
| function() { |
| for (var i = 0; i < 2000000; i++) { |
| negateVec4ByScaling(v, v); |
| } |
| }, |
| 'Negate vector by calling scale()'); |
| } |
| |
| function testNegateVec4ByNegation() { |
| var v = createRandomVec4(); |
| for (var i = 0; i < 2000000; i++) { |
| // Warm the trace tree to see if that makes a difference. |
| scaleVec4(v, 1, v); |
| } |
| |
| table.run( |
| function() { |
| for (var i = 0; i < 2000000; i++) { |
| negateVec4ByNegation(v, v); |
| } |
| }, |
| 'Negate vector by negating directly'); |
| } |
| </script> |
| </body> |
| </html> |
