diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index 6626ee587a7af944f0d9d444f122fb8f3d9d1f58..5785f1c2fac178cc6bcfe18e6d41b924c35108cc 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -845,19 +845,16 @@ THREE.WebGLRenderer = function ( parameters ) {
 			ntris     = faces3.length * 1,
 			nlines    = faces3.length * 3,
 
-			material = getBufferMaterial( object, geometryGroup ),
-
-			uvType = true,
-			normalType = bufferGuessNormalType( material ),
-			vertexColorType = bufferGuessVertexColorType( material );
-
-		// console.log( "uvType", uvType, "normalType", normalType, "vertexColorType", vertexColorType, object, geometryGroup, material );
+			material = getBufferMaterial( object, geometryGroup );
 
 		geometryGroup.__vertexArray = new Float32Array( nvertices * 3 );
+		geometryGroup.__normalArray = new Float32Array( nvertices * 3 );
+		geometryGroup.__colorArray = new Float32Array( nvertices * 3 );
+		geometryGroup.__uvArray = new Float32Array( nvertices * 2 );
 
-		if ( normalType ) {
+		if ( geometry.faceVertexUvs.length > 1 ) {
 
-			geometryGroup.__normalArray = new Float32Array( nvertices * 3 );
+			geometryGroup.__uv2Array = new Float32Array( nvertices * 2 );
 
 		}
 
@@ -867,28 +864,6 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		}
 
-		if ( vertexColorType ) {
-
-			geometryGroup.__colorArray = new Float32Array( nvertices * 3 );
-
-		}
-
-		if ( uvType ) {
-
-			if ( geometry.faceVertexUvs.length > 0 ) {
-
-				geometryGroup.__uvArray = new Float32Array( nvertices * 2 );
-
-			}
-
-			if ( geometry.faceVertexUvs.length > 1 ) {
-
-				geometryGroup.__uv2Array = new Float32Array( nvertices * 2 );
-
-			}
-
-		}
-
 		if ( object.geometry.skinWeights.length && object.geometry.skinIndices.length ) {
 
 			geometryGroup.__skinIndexArray = new Float32Array( nvertices * 4 );
@@ -1004,60 +979,6 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	};
 
-	function bufferGuessNormalType ( material ) {
-
-		// only MeshBasicMaterial and MeshDepthMaterial don't need normals
-
-		if ( ( material instanceof THREE.MeshBasicMaterial && ! material.envMap ) || material instanceof THREE.MeshDepthMaterial ) {
-
-			return false;
-
-		}
-
-		if ( materialNeedsSmoothNormals( material ) ) {
-
-			return THREE.SmoothShading;
-
-		} else {
-
-			return THREE.FlatShading;
-
-		}
-
-	};
-
-	function bufferGuessVertexColorType( material ) {
-
-		if ( material.vertexColors ) {
-
-			return material.vertexColors;
-
-		}
-
-		return false;
-
-	};
-
-	function bufferGuessUVType( material ) {
-
-		// material must use some texture to require uvs
-
-		if ( material.map ||
-				 material.lightMap ||
-				 material.bumpMap ||
-				 material.normalMap ||
-				 material.specularMap ||
-				 material.alphaMap ||
-				 material instanceof THREE.ShaderMaterial ) {
-
-			return true;
-
-		}
-
-		return false;
-
-	};
-
 	//
 
 	function initDirectBuffers( geometry ) {
@@ -1579,11 +1500,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		}
 
-		var normalType = bufferGuessNormalType( material ),
-		vertexColorType = bufferGuessVertexColorType( material ),
-		uvType = bufferGuessUVType( material ),
-
-		needsSmoothNormals = ( normalType === THREE.SmoothShading );
+		var needsSmoothNormals = materialNeedsSmoothNormals( material );
 
 		var f, fl, fi, face,
 		vertexNormals, faceNormal, normal,
@@ -1844,7 +1761,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		}
 
-		if ( dirtyColors && vertexColorType ) {
+		if ( dirtyColors ) {
 
 			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {
 
@@ -1853,7 +1770,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 				vertexColors = face.vertexColors;
 				faceColor = face.color;
 
-				if ( vertexColors.length === 3 && vertexColorType === THREE.VertexColors ) {
+				if ( vertexColors.length === 3 && material.vertexColors === THREE.VertexColors ) {
 
 					c1 = vertexColors[ 0 ];
 					c2 = vertexColors[ 1 ];
@@ -1928,7 +1845,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		}
 
-		if ( dirtyNormals && normalType ) {
+		if ( dirtyNormals ) {
 
 			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {
 
@@ -1972,7 +1889,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		}
 
-		if ( dirtyUvs && obj_uvs && uvType ) {
+		if ( dirtyUvs && obj_uvs ) {
 
 			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {
 
@@ -2004,7 +1921,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		}
 
-		if ( dirtyUvs && obj_uvs2 && uvType ) {
+		if ( dirtyUvs && obj_uvs2 ) {
 
 			for ( f = 0, fl = chunk_faces3.length; f < fl; f ++ ) {