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