Implemented gero3's Matrix4.transformVector3 optimisation (...

Implemented gero3's Matrix4.transformVector3 optimisation ( http://jsperf.com/diff-in-speed-for-three-js ).

examples/canvasrenderer_sandbox.html

@@ -133,7 +133,7 @@
 				objects = [];
 
 				geometry = new Sphere( 100, 16, 8 );
-				material = new THREE.MeshBasicMaterial( { env_map: ImageUtils.loadTexture( 'textures/land_ocean_ice_cloud_2048.jpg', THREE.ReflectionMapping ) } );
+				material = new THREE.MeshBasicMaterial( { env_map: ImageUtils.loadTexture( 'textures/uvgrid.png', THREE.ReflectionMapping ) } );
 
 				for ( var i = 0; i < 10; i ++ ) {
 

examples/textures/uvgrid.nfo

+http://www.flickr.com/photos/seeminglee/1791052516/

src/core/Matrix4.js

@@ -52,13 +52,12 @@ THREE.Matrix4.prototype = {
 
 	transformVector3: function ( v ) {
 
-		var vx = v.x, vy = v.y, vz = v.z;
+		var vx = v.x, vy = v.y, vz = v.z,
+		d = 1 / ( this.n41 * vx + this.n42 * vy + this.n43 * vz + this.n44 );
 
-		v.x = this.n11 * vx + this.n12 * vy + this.n13 * vz + this.n14;
-		v.y = this.n21 * vx + this.n22 * vy + this.n23 * vz + this.n24;
-		v.z = this.n31 * vx + this.n32 * vy + this.n33 * vz + this.n34;
-
-		v.multiplyScalar( 1 / ( this.n41 * vx + this.n42 * vy + this.n43 * vz + this.n44 ) );
+		v.x = ( this.n11 * vx + this.n12 * vy + this.n13 * vz + this.n14 ) * d;
+		v.y = ( this.n21 * vx + this.n22 * vy + this.n23 * vz + this.n24 ) * d;
+		v.z = ( this.n31 * vx + this.n32 * vy + this.n33 * vz + this.n34 ) * d;
 
 		return v;
 

src/renderers/CanvasRenderer.js

@@ -482,11 +482,11 @@ THREE.CanvasRenderer = function () {
 
 					texturePath( _v1x, _v1y, _v2x, _v2y, _v3x, _v3y, material.env_map.image, element.vertexNormalsWorld[ 0 ].x * 0.5 + 0.5, element.vertexNormalsWorld[ 0 ].y * 0.5 + 0.5, element.vertexNormalsWorld[ 1 ].x * 0.5 + 0.5, element.vertexNormalsWorld[ 1 ].y * 0.5 + 0.5, element.vertexNormalsWorld[ 2 ].x * 0.5 + 0.5, element.vertexNormalsWorld[ 2 ].y * 0.5 + 0.5 );
 
-				} else if ( material.env_map.mapping == THREE.RefractionMapping ) {
+				}/* else if ( material.env_map.mapping == THREE.RefractionMapping ) {
 
 					
 
-				}
+				}*/
 
 			}