Fix material sharing

jme3-plugins/src/ogre/java/com/jme3/scene/plugins/ogre/SceneLoader.java

@@ -71,6 +71,7 @@ public class SceneLoader extends DefaultHandler implements AssetLoader {
     
     private static final Logger logger = Logger.getLogger(SceneLoader.class.getName());
     private SceneMaterialLoader materialLoader = new SceneMaterialLoader();
+    private SceneMeshLoader meshLoader=new SceneMeshLoader();
     private Stack<String> elementStack = new Stack<String>();
     private AssetKey key;
     private String sceneName;
@@ -99,6 +100,7 @@ public class SceneLoader extends DefaultHandler implements AssetLoader {
     }
 
     private void reset() {
+    	meshLoader.reset();
         elementStack.clear();
         nodeIdx = 0;
 
@@ -299,8 +301,12 @@ public class SceneLoader extends DefaultHandler implements AssetLoader {
         entityNode = new com.jme3.scene.Node(name);
         OgreMeshKey meshKey = new OgreMeshKey(meshFile, materialList);
         try {
-            Spatial ogreMesh = assetManager.loadModel(meshKey);
+			try{
+				Spatial ogreMesh=(Spatial)meshLoader.load(assetManager.locateAsset(meshKey));
 				entityNode.attachChild(ogreMesh);
+			}catch(IOException e){
+				throw new AssetNotFoundException(meshKey.toString());
+			}
         } catch (AssetNotFoundException ex) {
             if (ex.getMessage().equals(meshFile)) {
                 logger.log(Level.WARNING, "Cannot locate {0} for scene {1}", new Object[]{meshKey, key});

jme3-plugins/src/ogre/java/com/jme3/scene/plugins/ogre/SceneMeshLoader.java

@@ -0,0 +1,26 @@
+package com.jme3.scene.plugins.ogre;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+
+import com.jme3.asset.AssetInfo;
+import com.jme3.asset.AssetKey;
+import com.jme3.scene.Spatial;
+
+public class SceneMeshLoader extends MeshLoader{
+	private Map<AssetKey,Spatial> cache=new HashMap<AssetKey,Spatial>();
+	@Override
+    public Object load(AssetInfo info) throws IOException {
+		AssetKey key=info.getKey();
+		Spatial output=cache.get(key);
+		if(output==null){
+			output=(Spatial)super.load(info);
+			cache.put(key,output);
+		}
+		return output.clone(false);
+	}
+	public void reset(){
+		cache.clear();
+	}
+}