var input = new Float32Array( 10000 * 3 ); var output = new Float32Array( 10000 * 3 ); for( var j = 0, jl = input.length; j < jl; j ++ ) { input[j] = j; } var inputVectors = []; var outputVectors = []; for( var j = 0, jl = input.length/3; j < jl; j ++ ) { inputVectors.push( new THREE.Vector3( j*3, j*3+1, j*3+2 ) ); outputVectors.push( new THREE.Vector3() ); } var suite = new Benchmark.Suite; suite.add('Float32Array-Float32Array', function() { var value3 = new Float32Array( 3 ); for (var i = 0, il = input.length / 3; i < il; i += 3) { value3[0] = input[i + 0]; value3[1] = input[i + 1]; value3[2] = input[i + 2]; value3[0] *= 1.01; value3[1] *= 1.03; value3[2] *= 0.98; output[i + 0] = value3[0]; output[i + 1] = value3[1]; output[i + 2] = value3[2]; } }); suite.add('Float32Array-Array', function() { var value2 = [0,0,0]; for (var i = 0, il = input.length / 3; i < il; i += 3) { value2[0] = input[i + 0]; value2[1] = input[i + 1]; value2[2] = input[i + 2]; value2[0] *= 1.01; value2[1] *= 1.03; value2[2] *= 0.98; output[i + 0] = value2[0]; output[i + 1] = value2[1]; output[i + 2] = value2[2]; } }); suite.add('Float32Array-Literal', function() { var x, y, z; for (var i = 0, il = input.length / 3; i < il; i += 3) { x = input[i + 0]; y = input[i + 1]; z = input[i + 2]; x *= 1.01; y *= 1.03; z *= 0.98; output[i + 0] = x; output[i + 1] = y; output[i + 2] = z; } }); suite.add('Float32Array-Vector3', function() { var value = new THREE.Vector3(); for (var i = 0, il = input.length / 3; i < il; i += 3) { value.x = input[i + 0]; value.y = input[i + 1]; value.z = input[i + 2]; value.x *= 1.01; value.y *= 1.03; value.z *= 0.98; output[i + 0] = value.x; output[i + 1] = value.y; output[i + 2] = value.z; } }); suite.add('Vector3Array-Direct', function() { for (var i = 0, il = inputVectors.length; i < il; i ++ ) { outputVectors[i].copy( inputVectors[i] ); outputVectors[i].x *= 1.01; outputVectors[i].y *= 1.03; outputVectors[i].z *= 0.98; } }); suite.add('Vector3Array-Vector3', function() { var value = new THREE.Vector3(); for (var i = 0, il = inputVectors.length; i < il; i ++ ) { value.copy( inputVectors[i] ); value.x *= 1.01; value.y *= 1.03; value.z *= 0.98; outputVectors[i].copy( value ); } }); suite.on('cycle', function(event, bench) { console.log(String(event.target)); }); suite.on('complete', function() { console.log('Fastest is ' + this.filter('fastest').pluck('name')); console.log( "Done" ); }); suite.run(true);