Updated builds.

build/three.js

@@ -8987,6 +8987,8 @@ THREE.InstancedBufferAttribute.prototype.copy = function ( source ) {
 
 	this.meshPerAttribute = source.meshPerAttribute;
 
+	return this;
+
 };
 
 // File:src/core/InterleavedBuffer.js
@@ -9103,6 +9105,8 @@ THREE.InstancedInterleavedBuffer.prototype.copy = function ( source ) {
 
 	this.meshPerAttribute = source.meshPerAttribute;
 
+	return this;
+
 };
 
 // File:src/core/InterleavedBufferAttribute.js

build/three.min.js

@@ -191,10 +191,10 @@ setY:function(a,b){this.array[a*this.itemSize+1]=b;return this},getZ:function(a)
 b,c,d,e){a*=this.itemSize;this.array[a+0]=b;this.array[a+1]=c;this.array[a+2]=d;this.array[a+3]=e;return this},clone:function(){return(new this.constructor).copy(this)}};THREE.Int8Attribute=function(a,b){return new THREE.BufferAttribute(new Int8Array(a),b)};THREE.Uint8Attribute=function(a,b){return new THREE.BufferAttribute(new Uint8Array(a),b)};THREE.Uint8ClampedAttribute=function(a,b){return new THREE.BufferAttribute(new Uint8ClampedArray(a),b)};
 THREE.Int16Attribute=function(a,b){return new THREE.BufferAttribute(new Int16Array(a),b)};THREE.Uint16Attribute=function(a,b){return new THREE.BufferAttribute(new Uint16Array(a),b)};THREE.Int32Attribute=function(a,b){return new THREE.BufferAttribute(new Int32Array(a),b)};THREE.Uint32Attribute=function(a,b){return new THREE.BufferAttribute(new Uint32Array(a),b)};THREE.Float32Attribute=function(a,b){return new THREE.BufferAttribute(new Float32Array(a),b)};
 THREE.Float64Attribute=function(a,b){return new THREE.BufferAttribute(new Float64Array(a),b)};THREE.IndexBufferAttribute=function(a,b){THREE.BufferAttribute.call(this,a,b)};THREE.IndexBufferAttribute.prototype=Object.create(THREE.BufferAttribute.prototype);THREE.IndexBufferAttribute.prototype.constructor=THREE.IndexBufferAttribute;THREE.InstancedBufferAttribute=function(a,b,c){THREE.BufferAttribute.call(this,a,b);this.meshPerAttribute=c||1};THREE.InstancedBufferAttribute.prototype=Object.create(THREE.BufferAttribute.prototype);
-THREE.InstancedBufferAttribute.prototype.constructor=THREE.InstancedBufferAttribute;THREE.InstancedBufferAttribute.prototype.copy=function(a){THREE.BufferAttribute.prototype.copy.call(this,a);this.meshPerAttribute=a.meshPerAttribute};THREE.InterleavedBuffer=function(a,b){this.uuid=THREE.Math.generateUUID();this.array=a;this.stride=b;this.dynamic=!1;this.updateRange={offset:0,count:-1};this.version=0};
+THREE.InstancedBufferAttribute.prototype.constructor=THREE.InstancedBufferAttribute;THREE.InstancedBufferAttribute.prototype.copy=function(a){THREE.BufferAttribute.prototype.copy.call(this,a);this.meshPerAttribute=a.meshPerAttribute;return this};THREE.InterleavedBuffer=function(a,b){this.uuid=THREE.Math.generateUUID();this.array=a;this.stride=b;this.dynamic=!1;this.updateRange={offset:0,count:-1};this.version=0};
 THREE.InterleavedBuffer.prototype={constructor:THREE.InterleavedBuffer,get length(){return this.array.length},get count(){return this.array.length/this.stride},set needsUpdate(a){!0===a&&this.version++},setDynamic:function(a){this.dynamic=a;return this},copy:function(a){this.array=new a.array.constructor(a.array);this.stride=a.stride;this.dynamic=a.dynamic},copyAt:function(a,b,c){a*=this.stride;c*=b.stride;for(var d=0,e=this.stride;d<e;d++)this.array[a+d]=b.array[c+d];return this},set:function(a,
 b){void 0===b&&(b=0);this.array.set(a,b);return this},clone:function(){return(new this.constructor).copy(this)}};THREE.InstancedInterleavedBuffer=function(a,b,c){THREE.InterleavedBuffer.call(this,a,b);this.meshPerAttribute=c||1};THREE.InstancedInterleavedBuffer.prototype=Object.create(THREE.InterleavedBuffer.prototype);THREE.InstancedInterleavedBuffer.prototype.constructor=THREE.InstancedInterleavedBuffer;
-THREE.InstancedInterleavedBuffer.prototype.copy=function(a){THREE.InterleavedBuffer.prototype.copy.call(this,a);this.meshPerAttribute=a.meshPerAttribute};THREE.InterleavedBufferAttribute=function(a,b,c){this.uuid=THREE.Math.generateUUID();this.data=a;this.itemSize=b;this.offset=c};
+THREE.InstancedInterleavedBuffer.prototype.copy=function(a){THREE.InterleavedBuffer.prototype.copy.call(this,a);this.meshPerAttribute=a.meshPerAttribute;return this};THREE.InterleavedBufferAttribute=function(a,b,c){this.uuid=THREE.Math.generateUUID();this.data=a;this.itemSize=b;this.offset=c};
 THREE.InterleavedBufferAttribute.prototype={constructor:THREE.InterleavedBufferAttribute,get length(){console.warn("THREE.BufferAttribute: .length has been deprecated. Please use .count.");return this.array.length},get count(){return this.data.array.length/this.data.stride},setX:function(a,b){this.data.array[a*this.data.stride+this.offset]=b;return this},setY:function(a,b){this.data.array[a*this.data.stride+this.offset+1]=b;return this},setZ:function(a,b){this.data.array[a*this.data.stride+this.offset+
 2]=b;return this},setW:function(a,b){this.data.array[a*this.data.stride+this.offset+3]=b;return this},getX:function(a){return this.data.array[a*this.data.stride+this.offset]},getY:function(a){return this.data.array[a*this.data.stride+this.offset+1]},getZ:function(a){return this.data.array[a*this.data.stride+this.offset+2]},getW:function(a){return this.data.array[a*this.data.stride+this.offset+3]},setXY:function(a,b,c){a=a*this.data.stride+this.offset;this.data.array[a+0]=b;this.data.array[a+1]=c;
 return this},setXYZ:function(a,b,c,d){a=a*this.data.stride+this.offset;this.data.array[a+0]=b;this.data.array[a+1]=c;this.data.array[a+2]=d;return this},setXYZW:function(a,b,c,d,e){a=a*this.data.stride+this.offset;this.data.array[a+0]=b;this.data.array[a+1]=c;this.data.array[a+2]=d;this.data.array[a+3]=e;return this}};