Support material.shadowSide

src/renderers/webgl/WebGLShadowMap.js

@@ -34,6 +34,9 @@ function WebGLShadowMap( _renderer, _objects, maxTextureSize ) {
 
 		_materialCache = {};
 
+	//var shadowSide = { 0: BackSide, 1: FrontSide, 2: BackSide };
+	var shadowSide = { 0: BackSide, 1: FrontSide, 2: DoubleSide }; // proposed
+
 	var cubeDirections = [
 		new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
 		new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
@@ -91,9 +94,6 @@ function WebGLShadowMap( _renderer, _objects, maxTextureSize ) {
 
 	this.type = PCFShadowMap;
 
-	this.renderReverseSided = true;
-	this.renderSingleSided = true;
-
 	this.render = function ( lights, scene, camera ) {
 
 		if ( scope.enabled === false ) return;
@@ -350,22 +350,7 @@ function WebGLShadowMap( _renderer, _objects, maxTextureSize ) {
 		result.visible = material.visible;
 		result.wireframe = material.wireframe;
 
-		var side = material.side;
-
-		if ( scope.renderSingleSided && side == DoubleSide ) {
-
-			side = FrontSide;
-
-		}
-
-		if ( scope.renderReverseSided ) {
-
-			if ( side === FrontSide ) side = BackSide;
-			else if ( side === BackSide ) side = FrontSide;
-
-		}
-
-		result.side = side;
+		result.side = ( material.shadowSide !== undefined ) ? material.shadowSide : shadowSide[ material.side ];
 
 		result.clipShadows = material.clipShadows;
 		result.clippingPlanes = material.clippingPlanes;