More clean up.

src/math/Vector3.js

@@ -481,6 +481,8 @@ Object.assign( Vector3.prototype, {
 
 	},
 
+	// TODO lengthSquared?
+
 	lengthSq: function () {
 
 		return this.x * this.x + this.y * this.y + this.z * this.z;

src/objects/SkinnedMesh.js

@@ -14,6 +14,8 @@ function SkinnedMesh( geometry, material ) {
 
 	Mesh.call( this, geometry, material );
 
+	if ( this.material.skinning === false ) console.warn( 'THREE.SkinnedMesh: Material must have skinning set to true.', this.material );
+
 	this.type = 'SkinnedMesh';
 
 	this.bindMode = "attached";

src/renderers/WebGLRenderer.js

@@ -692,7 +692,7 @@ function WebGLRenderer( parameters ) {
 		state.setMaterial( material );
 
 		var program = setProgram( camera, fog, material, object );
-		var geometryProgram = geometry.id + '_' + program.id + '_' + material.wireframe;
+		var geometryProgram = geometry.id + '_' + program.id + '_' + ( material.wireframe === true );
 
 		var updateBuffers = false;
 

src/renderers/webgl/WebGLBufferRenderer.js

@@ -59,11 +59,11 @@ function WebGLBufferRenderer( gl, extensions, infoRender ) {
 
 	}
 
-	return {
-		setMode: setMode,
-		render: render,
-		renderInstances: renderInstances
-	};
+	//
+
+	this.setMode = setMode;
+	this.render = render;
+	this.renderInstances = renderInstances;
 
 }
 

src/renderers/webgl/WebGLIndexedBufferRenderer.js

@@ -52,7 +52,7 @@ function WebGLIndexedBufferRenderer( gl, extensions, infoRender ) {
 
 		if ( extension === null ) {
 
-			console.error( 'THREE.WebGLBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
+			console.error( 'THREE.WebGLIndexedBufferRenderer: using THREE.InstancedBufferGeometry but hardware does not support extension ANGLE_instanced_arrays.' );
 			return;
 
 		}
@@ -66,14 +66,12 @@ function WebGLIndexedBufferRenderer( gl, extensions, infoRender ) {
 
 	}
 
-	return {
+	//
 
-		setMode: setMode,
-		setIndex: setIndex,
-		render: render,
-		renderInstances: renderInstances
-
-	};
+	this.setMode = setMode;
+	this.setIndex = setIndex;
+	this.render = render;
+	this.renderInstances = renderInstances;
 
 }