Updated builds.

build/three.js

@@ -9244,7 +9244,6 @@
 					_lookTarget.setFromMatrixPosition( light.target.matrixWorld );
 					shadowCamera.lookAt( _lookTarget );
 					shadowCamera.updateMatrixWorld();
-					shadowCamera.matrixWorldInverse.getInverse( shadowCamera.matrixWorld );
 
 					// compute shadow matrix
 
@@ -9275,7 +9274,6 @@
 						shadowCamera.up.copy( cubeUps[ face ] );
 						shadowCamera.lookAt( _lookTarget );
 						shadowCamera.updateMatrixWorld();
-						shadowCamera.matrixWorldInverse.getInverse( shadowCamera.matrixWorld );
 
 						var vpDimensions = cube2DViewPorts[ face ];
 						_state.viewport( vpDimensions );
@@ -15653,6 +15651,14 @@
 
 		}(),
 
+		updateMatrixWorld: function ( force ) {
+
+			Object3D.prototype.updateMatrixWorld.call( this, force );
+
+			this.matrixWorldInverse.getInverse( this.matrixWorld );
+
+		},
+
 		clone: function () {
 
 			return new this.constructor().copy( this );
@@ -20973,8 +20979,6 @@
 
 			if ( camera.parent === null ) camera.updateMatrixWorld();
 
-			camera.matrixWorldInverse.getInverse( camera.matrixWorld );
-
 			_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
 			_frustum.setFromMatrix( _projScreenMatrix );
 
@@ -21145,7 +21149,7 @@
 			state.buffers.depth.setMask( true );
 			state.buffers.color.setMask( true );
 
-			if ( camera.isArrayCamera && camera.enabled ) {
+			if ( camera.isArrayCamera ) {
 
 				_this.setScissorTest( false );
 
@@ -21319,7 +21323,7 @@
 
 				object.onBeforeRender( _this, scene, camera, geometry, material, group );
 
-				if ( camera.isArrayCamera && camera.enabled ) {
+				if ( camera.isArrayCamera ) {
 
 					var cameras = camera.cameras;
 
@@ -21328,14 +21332,13 @@
 						var camera2 = cameras[ j ];
 						var bounds = camera2.bounds;
 
-						_this.setViewport(
-							bounds.x * _width * _pixelRatio, bounds.y * _height * _pixelRatio,
-							bounds.z * _width * _pixelRatio, bounds.w * _height * _pixelRatio
-						);
-						_this.setScissor(
-							bounds.x * _width * _pixelRatio, bounds.y * _height * _pixelRatio,
-							bounds.z * _width * _pixelRatio, bounds.w * _height * _pixelRatio
-						);
+						var x = bounds.x * _width * _pixelRatio;
+						var y = bounds.y * _height * _pixelRatio;
+						var width = bounds.z * _width * _pixelRatio;
+						var height = bounds.w * _height * _pixelRatio;
+
+						_this.setViewport( x, y, width, height );
+						_this.setScissor( x, y, width, height );
 						_this.setScissorTest( true );
 
 						renderObject( object, scene, camera2, geometry, material, group );
@@ -35999,7 +36002,6 @@
 
 		PerspectiveCamera.call( this );
 
-		this.enabled = false;
 		this.cameras = array || [];
 
 	}
@@ -41918,9 +41920,7 @@
 
 		attach: function ( child, scene, parent ) {
 
-			var matrixWorldInverse = new Matrix4();
-			matrixWorldInverse.getInverse( parent.matrixWorld );
-			child.applyMatrix( matrixWorldInverse );
+			child.applyMatrix( new Matrix4().getInverse( parent.matrixWorld ) );
 
 			scene.remove( child );
 			parent.add( child );

build/three.module.js

@@ -9238,7 +9238,6 @@ function WebGLShadowMap( _renderer, _lights, _objects, capabilities ) {
 				_lookTarget.setFromMatrixPosition( light.target.matrixWorld );
 				shadowCamera.lookAt( _lookTarget );
 				shadowCamera.updateMatrixWorld();
-				shadowCamera.matrixWorldInverse.getInverse( shadowCamera.matrixWorld );
 
 				// compute shadow matrix
 
@@ -9269,7 +9268,6 @@ function WebGLShadowMap( _renderer, _lights, _objects, capabilities ) {
 					shadowCamera.up.copy( cubeUps[ face ] );
 					shadowCamera.lookAt( _lookTarget );
 					shadowCamera.updateMatrixWorld();
-					shadowCamera.matrixWorldInverse.getInverse( shadowCamera.matrixWorld );
 
 					var vpDimensions = cube2DViewPorts[ face ];
 					_state.viewport( vpDimensions );
@@ -15647,6 +15645,14 @@ Camera.prototype = Object.assign( Object.create( Object3D.prototype ), {
 
 	}(),
 
+	updateMatrixWorld: function ( force ) {
+
+		Object3D.prototype.updateMatrixWorld.call( this, force );
+
+		this.matrixWorldInverse.getInverse( this.matrixWorld );
+
+	},
+
 	clone: function () {
 
 		return new this.constructor().copy( this );
@@ -20967,8 +20973,6 @@ function WebGLRenderer( parameters ) {
 
 		if ( camera.parent === null ) camera.updateMatrixWorld();
 
-		camera.matrixWorldInverse.getInverse( camera.matrixWorld );
-
 		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
 		_frustum.setFromMatrix( _projScreenMatrix );
 
@@ -21139,7 +21143,7 @@ function WebGLRenderer( parameters ) {
 		state.buffers.depth.setMask( true );
 		state.buffers.color.setMask( true );
 
-		if ( camera.isArrayCamera && camera.enabled ) {
+		if ( camera.isArrayCamera ) {
 
 			_this.setScissorTest( false );
 
@@ -21313,7 +21317,7 @@ function WebGLRenderer( parameters ) {
 
 			object.onBeforeRender( _this, scene, camera, geometry, material, group );
 
-			if ( camera.isArrayCamera && camera.enabled ) {
+			if ( camera.isArrayCamera ) {
 
 				var cameras = camera.cameras;
 
@@ -21322,14 +21326,13 @@ function WebGLRenderer( parameters ) {
 					var camera2 = cameras[ j ];
 					var bounds = camera2.bounds;
 
-					_this.setViewport(
-						bounds.x * _width * _pixelRatio, bounds.y * _height * _pixelRatio,
-						bounds.z * _width * _pixelRatio, bounds.w * _height * _pixelRatio
-					);
-					_this.setScissor(
-						bounds.x * _width * _pixelRatio, bounds.y * _height * _pixelRatio,
-						bounds.z * _width * _pixelRatio, bounds.w * _height * _pixelRatio
-					);
+					var x = bounds.x * _width * _pixelRatio;
+					var y = bounds.y * _height * _pixelRatio;
+					var width = bounds.z * _width * _pixelRatio;
+					var height = bounds.w * _height * _pixelRatio;
+
+					_this.setViewport( x, y, width, height );
+					_this.setScissor( x, y, width, height );
 					_this.setScissorTest( true );
 
 					renderObject( object, scene, camera2, geometry, material, group );
@@ -35993,7 +35996,6 @@ function ArrayCamera( array ) {
 
 	PerspectiveCamera.call( this );
 
-	this.enabled = false;
 	this.cameras = array || [];
 
 }
@@ -41912,9 +41914,7 @@ var SceneUtils = {
 
 	attach: function ( child, scene, parent ) {
 
-		var matrixWorldInverse = new Matrix4();
-		matrixWorldInverse.getInverse( parent.matrixWorld );
-		child.applyMatrix( matrixWorldInverse );
+		child.applyMatrix( new Matrix4().getInverse( parent.matrixWorld ) );
 
 		scene.remove( child );
 		parent.add( child );