Updated builds.

build/three.js

@@ -18855,10 +18855,10 @@
 
 		}
 
-		function sort() {
+		function sort( customOpaqueSort, customTransparentSort ) {
 
-			if ( opaque.length > 1 ) { opaque.sort( painterSortStable ); }
-			if ( transparent.length > 1 ) { transparent.sort( reversePainterSortStable ); }
+			if ( opaque.length > 1 ) { opaque.sort( customOpaqueSort || painterSortStable ); }
+			if ( transparent.length > 1 ) { transparent.sort( customTransparentSort || reversePainterSortStable ); }
 
 		}
 
@@ -23290,6 +23290,8 @@
 			_height = _canvas.height,
 
 			_pixelRatio = 1,
+			_opaqueSort = null,
+			_transparentSort = null,
 
 			_viewport = new Vector4( 0, 0, _width, _height ),
 			_scissor = new Vector4( 0, 0, _width, _height ),
@@ -23636,6 +23638,18 @@
 
 		};
 
+		this.setOpaqueSort = function ( method ) {
+
+			_opaqueSort = method;
+
+		};
+
+		this.setTransparentSort = function ( method ) {
+
+			_transparentSort = method;
+
+		};
+
 		// Clearing
 
 		this.getClearColor = function () {
@@ -24286,7 +24300,7 @@
 
 			if ( _this.sortObjects === true ) {
 
-				currentRenderList.sort();
+				currentRenderList.sort( _opaqueSort, _transparentSort );
 
 			}
 

build/three.module.js

@@ -18842,10 +18842,10 @@ function WebGLRenderList() {
 
 	}
 
-	function sort() {
+	function sort( customOpaqueSort, customTransparentSort ) {
 
-		if ( opaque.length > 1 ) opaque.sort( painterSortStable );
-		if ( transparent.length > 1 ) transparent.sort( reversePainterSortStable );
+		if ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );
+		if ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );
 
 	}
 
@@ -23282,6 +23282,8 @@ function WebGLRenderer( parameters ) {
 		_height = _canvas.height,
 
 		_pixelRatio = 1,
+		_opaqueSort = null,
+		_transparentSort = null,
 
 		_viewport = new Vector4( 0, 0, _width, _height ),
 		_scissor = new Vector4( 0, 0, _width, _height ),
@@ -23628,6 +23630,18 @@ function WebGLRenderer( parameters ) {
 
 	};
 
+	this.setOpaqueSort = function ( method ) {
+
+		_opaqueSort = method;
+
+	};
+
+	this.setTransparentSort = function ( method ) {
+
+		_transparentSort = method;
+
+	};
+
 	// Clearing
 
 	this.getClearColor = function () {
@@ -24278,7 +24292,7 @@ function WebGLRenderer( parameters ) {
 
 		if ( _this.sortObjects === true ) {
 
-			currentRenderList.sort();
+			currentRenderList.sort( _opaqueSort, _transparentSort );
 
 		}