diff --git a/src/renderers/shaders/ShaderChunk/shadowmask_pars_fragment.glsl b/src/renderers/shaders/ShaderChunk/shadowmask_pars_fragment.glsl
new file mode 100644
index 0000000000000000000000000000000000000000..04b2dda156b074a8bb23045a32420d578d3b0f43
--- /dev/null
+++ b/src/renderers/shaders/ShaderChunk/shadowmask_pars_fragment.glsl
@@ -0,0 +1,50 @@
+float getShadowMask() {
+
+	float shadow = 1.0;
+
+	#ifdef USE_SHADOWMAP
+
+	#if NUM_DIR_LIGHTS > 0
+
+	DirectionalLight directionalLight;
+
+	for ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {
+
+		directionalLight = directionalLights[ i ];
+		shadow *= bool( directionalLight.shadow ) ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;
+
+	}
+
+	#endif
+
+	#if NUM_SPOT_LIGHTS > 0
+
+	SpotLight spotLight;
+
+	for ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {
+
+		spotLight = spotLights[ i ];
+		shadow *= bool( spotLight.shadow ) ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowBias, spotLight.shadowRadius, vSpotShadowCoord[ i ] ) : 1.0;
+
+	}
+
+	#endif
+
+	#if NUM_POINT_LIGHTS > 0
+
+	PointLight pointLight;
+
+	for ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {
+
+		pointLight = pointLights[ i ];
+		shadow *= bool( pointLight.shadow ) ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ] ) : 1.0;
+
+	}
+
+	#endif
+
+	#endif
+
+	return shadow;
+
+}
diff --git a/src/renderers/shaders/ShaderLib.js b/src/renderers/shaders/ShaderLib.js
index 0e34f7d566245b0744215949a1e8b597655d9746..e61fabe6246252caa552b49d85bba12fae59239b 100644
--- a/src/renderers/shaders/ShaderLib.js
+++ b/src/renderers/shaders/ShaderLib.js
@@ -104,7 +104,7 @@ THREE.ShaderLib = {
 
 				THREE.ShaderChunk[ "aomap_fragment" ],
 
-				"vec3 outgoingLight = reflectedLight.indirectDiffuse;",
+			"	vec3 outgoingLight = reflectedLight.indirectDiffuse;",
 
 				THREE.ShaderChunk[ "envmap_fragment" ],
 				THREE.ShaderChunk[ "linear_to_gamma_fragment" ],
@@ -213,8 +213,10 @@ THREE.ShaderLib = {
 			THREE.ShaderChunk[ "envmap_pars_fragment" ],
 			THREE.ShaderChunk[ "bsdfs" ],
 			THREE.ShaderChunk[ "ambient_pars" ],
+			THREE.ShaderChunk[ "lights_pars" ],
 			THREE.ShaderChunk[ "fog_pars_fragment" ],
 			THREE.ShaderChunk[ "shadowmap_pars_fragment" ],
+			THREE.ShaderChunk[ "shadowmask_pars_fragment" ],
 			THREE.ShaderChunk[ "specularmap_pars_fragment" ],
 			THREE.ShaderChunk[ "logdepthbuf_pars_fragment" ],
 
@@ -249,7 +251,7 @@ THREE.ShaderLib = {
 
 			"	#endif",
 
-			"	reflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );",
+			"	reflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();",
 
 				// modulation
 				THREE.ShaderChunk[ "aomap_fragment" ],
diff --git a/utils/build/includes/common.json b/utils/build/includes/common.json
index 36426a5fd72ada76e3103ac70e5916a1897ea0db..6112f3ce40162798e3ccc08f47f5d4e796625550 100644
--- a/utils/build/includes/common.json
+++ b/utils/build/includes/common.json
@@ -176,6 +176,7 @@
 	"src/renderers/shaders/ShaderChunk/shadowmap_pars_fragment.glsl",
 	"src/renderers/shaders/ShaderChunk/shadowmap_pars_vertex.glsl",
 	"src/renderers/shaders/ShaderChunk/shadowmap_vertex.glsl",
+	"src/renderers/shaders/ShaderChunk/shadowmask_pars_fragment.glsl",
 	"src/renderers/shaders/ShaderChunk/skinbase_vertex.glsl",
 	"src/renderers/shaders/ShaderChunk/skinning_pars_vertex.glsl",
 	"src/renderers/shaders/ShaderChunk/skinning_vertex.glsl",