DRACOLoader: Fix three/gltf attribute name mappings.

Author: Don McCurdy

examples/js/loaders/DRACOLoader.js

@@ -28,8 +28,9 @@ THREE.DRACOLoader = function(manager) {
     this.nativeAttributeMap = {
       'position' : 'POSITION',
       'normal' : 'NORMAL',
-      'color' : 'COLOR',
-      'uv' : 'TEX_COORD'
+      'color' : 'COLOR_0',
+      'uv' : 'TEXCOORD_0',
+      'uv2' : 'TEXCOORD_1'
     };
 };
 

examples/js/loaders/GLTFLoader.js

@@ -1136,16 +1136,10 @@ THREE.GLTFLoader = ( function () {
 		POSITION: 'position',
 		NORMAL: 'normal',
 		TEXCOORD_0: 'uv',
-		TEXCOORD0: 'uv', // deprecated
-		TEXCOORD: 'uv', // deprecated
 		TEXCOORD_1: 'uv2',
 		COLOR_0: 'color',
-		COLOR0: 'color', // deprecated
-		COLOR: 'color', // deprecated
 		WEIGHTS_0: 'skinWeight',
-		WEIGHT: 'skinWeight', // deprecated
 		JOINTS_0: 'skinIndex',
-		JOINT: 'skinIndex' // deprecated
 	};
 
 	var PATH_PROPERTIES = {
@@ -1939,7 +1933,7 @@ THREE.GLTFLoader = ( function () {
 			// Ignore empty accessors, which may be used to declare runtime
 			// information about attributes coming from another source (e.g. Draco
 			// compression extension).
-			return null;
+			return Promise.resolve( null );
 
 		}