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vec_array_perf.html
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<!DOCTYPE html>
<html>
<!--
Copyright 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.
-->
<head>
<metahttp-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Performance Tests - Vector Array math</title>
<linkrel="stylesheet" type="text/css"
href="../testing/performancetable.css"/>
<scripttype="text/javascript" src="../base.js"></script>
<scripttype="text/javascript">
goog.require('goog.testing.jsunit');
goog.require('goog.testing.PerformanceTable');
goog.require('goog.vec.Vec4');
goog.require('goog.vec.Mat4');
</script>
</head>
<body>
<h1>Closure Performance Tests - Vector Array Math</h1>
<p>
<strong>User-agent:</strong>
<scripttype="text/javascript">document.write(navigator.userAgent);</script>
</p>
<p>
These tests compare various methods of performing vector operations on
arrays of vectors.
</p>
<divid="perfTable"></div>
<hr>
<scripttype="text/javascript">
vartable=newgoog.testing.PerformanceTable(
goog.dom.getElement('perfTable'));
functioncreateRandomFloat32Array(length){
vararray=newFloat32Array(length);
for(vari=0;i<length;i++){
array[i]=Math.random();
}
returnarray;
}
functioncreateRandomIndexArray(length){
vararray=[];
for(vari=0;i<length;i++){
array[i]=Math.floor(Math.random()*length);
array[i]=Math.min(length-1,array[i]);
}
returnarray;
}
functioncreateRandomVec4Array(length){
vara=[];
for(vari=0;i<length;i++){
a[i]=goog.vec.Vec4.createFromValues(
Math.random(),Math.random(),Math.random(),Math.random());
}
returna;
}
functioncreateRandomMat4(){
varm=goog.vec.Mat4.createFromValues(
Math.random(),Math.random(),Math.random(),Math.random(),
Math.random(),Math.random(),Math.random(),Math.random(),
Math.random(),Math.random(),Math.random(),Math.random(),
Math.random(),Math.random(),Math.random(),Math.random());
returnm;
}
functioncreateRandomMat4Array(length){
varm=[];
for(vari=0;i<length;i++){
m[i]=createRandomMat4();
}
returnm;
}
/**
* Vec4Object is a 4-vector object with x,y,z,w components.
* @param {number} x The x component.
* @param {number} y The y component.
* @param {number} z The z component.
* @param {number} w The w component.
* @constructor
*/
Vec4Object=function(x,y,z,w){
this.x=x;
this.y=y;
this.z=z;
this.w=w;
};
/**
* Add two vectors.
* @param {Vec4Object} v0 A vector.
* @param {Vec4Object} v1 Another vector.
* @param {Vec4Object} r The result.
*/
Vec4Object.add=function(v0,v1,r){
r.x=v0.x+v1.x;
r.y=v0.y+v1.y;
r.z=v0.z+v1.z;
r.w=v0.w+v1.w;
};
functioncreateRandomVec4ObjectArray(length){
vara=[];
for(vari=0;i<length;i++){
a[i]=newVec4Object(
Math.random(),Math.random(),Math.random(),Math.random());
}
returna;
}
functionsetVec4FromArray(v,a,o){
v[0]=a[o+0];
v[1]=a[o+1];
v[2]=a[o+2];
v[3]=a[o+3];
}
functionsetArrayFromVec4(a,o,v){
a[o+0]=v[0];
a[o+1]=v[1];
a[o+2]=v[2];
a[o+3]=v[3];
}
/**
* This is the same as goog.vec.Vec4.add(). Use this to avoid namespace lookup
* overheads.
* @param {goog.vec.Vec4.Vec4Like} v0 A vector.
* @param {goog.vec.Vec4.Vec4Like} v1 Another vector.
* @param {goog.vec.Vec4.Vec4Like} r The result.
*/
functionaddVec4(v0,v1,r){
r[0]=v0[0]+v1[0];
r[1]=v0[1]+v1[1];
r[2]=v0[2]+v1[2];
r[3]=v0[3]+v1[3];
}
functionaddVec4ByOffset(v0Buf,v0Off,v1Buf,v1Off,rBuf,rOff){
rBuf[rOff+0]=v0Buf[v0Off+0]+v1Buf[v1Off+0];
rBuf[rOff+1]=v0Buf[v0Off+1]+v1Buf[v1Off+1];
rBuf[rOff+2]=v0Buf[v0Off+2]+v1Buf[v1Off+2];
rBuf[rOff+3]=v0Buf[v0Off+3]+v1Buf[v1Off+3];
}
functionaddVec4ByOptionalOffset(v0,v1,r,opt_v0Off,opt_v1Off,opt_rOff){
if(opt_v0Off&&opt_v1Off&&opt_rOff){
r[opt_rOff+0]=v0[opt_v0Off+0]+v1[opt_v1Off+0];
r[opt_rOff+1]=v0[opt_v0Off+1]+v1[opt_v1Off+1];
r[opt_rOff+2]=v0[opt_v0Off+2]+v1[opt_v1Off+2];
r[opt_rOff+3]=v0[opt_v0Off+3]+v1[opt_v1Off+3];
}else{
r[0]=v0[0]+v1[0];
r[1]=v0[1]+v1[1];
r[2]=v0[2]+v1[2];
r[3]=v0[3]+v1[3];
}
}
functionmat4MultVec4ByOffset(mBuf,mOff,vBuf,vOff,rBuf,rOff){
varx=vBuf[vOff+0],y=vBuf[vOff+1],
z=vBuf[vOff+2],w=vBuf[vOff+3];
rBuf[rOff+0]=x*mBuf[mOff+0]+y*mBuf[mOff+4]+
z*mBuf[mOff+8]+w*mBuf[mOff+12];
rBuf[rOff+1]=x*mBuf[mOff+1]+y*mBuf[mOff+5]+
z*mBuf[mOff+9]+w*mBuf[mOff+13];
rBuf[rOff+2]=x*mBuf[mOff+2]+y*mBuf[mOff+6]+
z*mBuf[mOff+10]+w*mBuf[mOff+14];
rBuf[rOff+3]=x*mBuf[mOff+3]+y*mBuf[mOff+7]+
z*mBuf[mOff+11]+w*mBuf[mOff+15];
}
varNUM_ITERATIONS=200000;
functiontestAddVec4ByOffset(){
varnVecs=NUM_ITERATIONS;
varnVals=nVecs*4;
vara0=createRandomFloat32Array(nVals);
vara1=createRandomFloat32Array(nVals);
vara2=newFloat32Array(nVals);
table.run(
function(){
for(vari=0;i<nVecs;i++){
addVec4ByOffset(a0,i*4,a1,i*4,a2,i*4);
}
},
'Add vectors using offsets');
}
functiontestAddVec4ByOptionalOffset(){
varnVecs=NUM_ITERATIONS;
varnVals=nVecs*4;
vara0=createRandomFloat32Array(nVals);
vara1=createRandomFloat32Array(nVals);
vara2=newFloat32Array(nVals);
table.run(
function(){
for(vari=0;i<nVecs;i++){
addVec4ByOptionalOffset(a0,a1,a2,i*4,i*4,i*4);
}
},
'Add vectors with optional offsets (requires branch)');
}
/**
* Check the overhead of using an array of individual
* Vec4s (Float32Arrays of length 4).
*/
functiontestAddVec4ByVec4s(){
varnVecs=NUM_ITERATIONS;
vara0=createRandomVec4Array(nVecs);
vara1=createRandomVec4Array(nVecs);
vara2=createRandomVec4Array(nVecs);
table.run(
function(){
for(vari=0;i<nVecs;i++){
addVec4(a0[i],a1[i],a2[i]);
}
},
'Add vectors using an array of Vec4s (Float32Arrays of length 4)');
}
functiontestAddVec4ByTmp(){
varnVecs=NUM_ITERATIONS;
varnVals=nVecs*4;
vara0=createRandomFloat32Array(nVals);
vara1=createRandomFloat32Array(nVals);
vara2=newFloat32Array(nVals);
table.run(
function(){
vart0=newFloat32Array(4);
vart1=newFloat32Array(4);
for(vari=0;i<nVecs;i++){
setVec4FromArray(t0,a0,i*4);
setVec4FromArray(t1,a1,i*4);
addVec4(t0,t1,t0);
setArrayFromVec4(a2,i*4,t0);
}
},
'Add vectors using tmps');
}
/**
* Check the overhead of using an array of Objects with the implicit hash
* lookups for the x,y,z,w components.
*/
functiontestAddVec4ByObjects(){
varnVecs=NUM_ITERATIONS;
vara0=createRandomVec4ObjectArray(nVecs);
vara1=createRandomVec4ObjectArray(nVecs);
vara2=createRandomVec4ObjectArray(nVecs);
table.run(
function(){
for(vari=0;i<nVecs;i++){
Vec4Object.add(a0[i],a1[i],a2[i]);
}
},
'Add vectors using an array of Objects '+
'(with implicit hash lookups for the x,y,z,w components)');
}
functiontestAddVec4BySubarray(){
varnVecs=NUM_ITERATIONS;
varnVals=nVecs*4;
vara0=createRandomFloat32Array(nVals);
vara1=createRandomFloat32Array(nVals);
vara2=newFloat32Array(nVals);
table.run(
function(){
for(vari=0;i<nVecs;i++){
vart0=a0.subarray(i*4*4);
vart1=a1.subarray(i*4*4);
vart2=a2.subarray(i*4*4);
addVec4(t0,t1,t2);
}
},
'Add vectors using Float32Array.subarray()');
}
functiontestAddVec4ByView(){
varnVecs=NUM_ITERATIONS;
varnVals=nVecs*4;
vara0=createRandomFloat32Array(nVals);
vara1=createRandomFloat32Array(nVals);
vara2=newFloat32Array(nVals);
table.run(
function(){
for(vari=0;i<nVecs;i++){
vart0=newFloat32Array(a0.buffer,i*4*4);
vart1=newFloat32Array(a1.buffer,i*4*4);
vart2=newFloat32Array(a2.buffer,i*4*4);
addVec4(t0,t1,t2);
}
},
'Add vectors using Float32 view');
}
functiontestMat4MultVec4ByOffset(){
varnVecs=NUM_ITERATIONS;
varnVecVals=nVecs*4;
varnMatVals=nVecs*16;
varm=createRandomFloat32Array(nMatVals);
vara0=createRandomFloat32Array(nVecVals);
vara1=newFloat32Array(nVecVals);
table.run(
function(){
for(vari=0;i<nVecs;i++){
mat4MultVec4ByOffset(m,i*16,a0,i*4,a1,i*4);
}
},
'vec4 = mat4 * vec4 using offsets.');
}
/**
* Check the overhead of using an array of individual
* Vec4s (Float32Arrays of length 4).
*/
functiontestMat4MultVec4ByVec4s(){
varnVecs=NUM_ITERATIONS;
vara0=createRandomVec4Array(nVecs);
vara1=createRandomVec4Array(nVecs);
varm=createRandomMat4Array(nVecs);
table.run(
function(){
for(vari=0;i<nVecs;i++){
goog.vec.Mat4.multVec4(m[i],a0[i],a1[i]);
}
},
'vec4 = mat4 * vec4 using arrays of Vec4s and Mat4s');
}
/**
* Do 10x as many for the one vector tests.
* @type {number}
*/
varNUM_ONE_ITERATIONS=NUM_ITERATIONS*10;
functiontestAddOneVec4ByOffset(){
vara0=createRandomFloat32Array(4);
vara1=createRandomFloat32Array(4);
vara2=newFloat32Array(4);
table.run(
function(){
for(vari=0;i<NUM_ONE_ITERATIONS;i++){
addVec4ByOffset(a0,0,a1,0,a2,0);
}
},
'Add one vector using offset of 0');
}
functiontestAddOneVec4(){
vara0=createRandomFloat32Array(4);
vara1=createRandomFloat32Array(4);
vara2=newFloat32Array(4);
table.run(
function(){
for(vari=0;i<NUM_ONE_ITERATIONS;i++){
addVec4(a0,a1,a2);
}
},
'Add one vector');
}
functiontestAddOneVec4ByOptionalOffset(){
vara0=createRandomFloat32Array(4);
vara1=createRandomFloat32Array(4);
vara2=newFloat32Array(4);
table.run(
function(){
for(vari=0;i<NUM_ONE_ITERATIONS;i++){
addVec4ByOptionalOffset(a0,a1,a2);
}
},
'Add one vector with optional offsets (requires branch)');
}
functiontestAddRandomVec4ByOffset(){
varnVecs=NUM_ITERATIONS;
varnVals=nVecs*4;
vara0=createRandomFloat32Array(nVals);
vara1=createRandomFloat32Array(nVals);
vara2=newFloat32Array(nVals);
vari0=createRandomIndexArray(nVecs);
vari1=createRandomIndexArray(nVecs);
vari2=createRandomIndexArray(nVecs);
table.run(
function(){
for(vari=0;i<nVecs;i++){
addVec4ByOffset(a0,i0[i]*4,a1,i1[i]*4,a2,i2[i]*4);
}
},
'Add random vectors using offsets');
}
functiontestAddRandomVec4ByVec4s(){
varnVecs=NUM_ITERATIONS;
vara0=createRandomVec4Array(nVecs);
vara1=createRandomVec4Array(nVecs);
vara2=createRandomVec4Array(nVecs);
vari0=createRandomIndexArray(nVecs);
vari1=createRandomIndexArray(nVecs);
vari2=createRandomIndexArray(nVecs);
table.run(
function(){
for(vari=0;i<nVecs;i++){
addVec4(a0[i0[i]],a1[i1[i]],a2[i2[i]]);
}
},
'Add random vectors using an array of Vec4s');
}
// Make sure the tests are run in the order they are defined.
vartestCase=newgoog.testing.TestCase(document.title);
testCase.order=goog.testing.TestCase.Order.NATURAL;
testCase.autoDiscoverTests();
G_testRunner.initialize(testCase);
</script>
</body>
</html>
