Editor determines GLTF version and uses appropriate loader

editor/index.html

@@ -24,6 +24,7 @@
 		<script src="../examples/js/loaders/ColladaLoader.js"></script>
 		<script src="../examples/js/loaders/FBXLoader.js"></script>
 		<script src="../examples/js/loaders/GLTFLoader.js"></script>
+		<script src="../examples/js/loaders/deprecated/LegacyGLTFLoader.js"></script>
 		<script src="../examples/js/loaders/KMZLoader.js"></script>
 		<script src="../examples/js/loaders/MD2Loader.js"></script>
 		<script src="../examples/js/loaders/OBJLoader.js"></script>

editor/js/Loader.js

@@ -176,7 +176,18 @@ var Loader = function ( editor ) {
 
 					var contents = event.target.result;
 
-					var loader = new THREE.GLTFLoader();
+					var loader;
+
+					if ( isGltf1( contents ) ) {
+
+						loader = new THREE.LegacyGLTFLoader();
+
+					} else {
+
+						loader = new THREE.GLTFLoader();
+
+					}
+
 					loader.parse( contents, '', function ( result ) {
 
 						result.scene.name = filename;
@@ -572,4 +583,45 @@ var Loader = function ( editor ) {
 
 	}
 
+	function isGltf1( contents ) {
+
+		var resultContent;
+
+		if ( typeof contents === 'string' ) {
+
+			resultContent = contents;
+
+		} else {
+
+			var magic = THREE.LoaderUtils.decodeText( new Uint8Array( contents, 0, 4 ) );
+
+			if ( magic === 'glTF' ) {
+
+				try {
+
+					extensions[ EXTENSIONS.KHR_BINARY_GLTF ] = new GLTFBinaryExtension( contents );
+
+				} catch ( error ) {
+
+					// dunno what it is, but it's definitely not OK
+					return false;
+
+				}
+
+				resultContent = extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content;
+
+			} else {
+
+				resultContent = THREE.LoaderUtils.decodeText( new Uint8Array( contents ) );
+
+			}
+
+		}
+
+		var json = JSON.parse( resultContent );
+
+		return ( json.asset != undefined && json.asset.version[ 0 ] < 2 );
+
+	}
+
 };