have fence deletion completely handled by native object manager (jMonkeyEngine#2632)

Author: codex128

jme3-core/src/main/java/com/jme3/shadow/SdsmFitter.java

@@ -252,10 +252,7 @@ boolean isReady(boolean wait) {
         }
 
         SplitFitResult extract() {
-            if (fence != null) {
-                renderer.deleteFence(fence);
-                fence = null;
-            }
+            fence = null;
             SplitFit fit = extractFit();
             return new SplitFitResult(parameters, fit);
         }
@@ -310,9 +307,7 @@ private SplitFit extractFit() {
         void cleanup() {
             minMaxDepthSsbo.deleteObject(renderer);
             fitFrustumSsbo.deleteObject(renderer);
-            if (fence != null) {
-                fence.deleteObject(renderer);
-            }
+            fence = null;
         }
     }
 

jme3-examples/src/main/java/jme3test/light/TestSdsmDirectionalLightShadow.java

@@ -55,6 +55,7 @@
 import com.jme3.shadow.DirectionalLightShadowFilter;
 import com.jme3.shadow.EdgeFilteringMode;
 import com.jme3.shadow.SdsmDirectionalLightShadowFilter;
+import com.jme3.system.AppSettings;
 import com.jme3.util.SkyFactory;
 
 import java.io.File;
@@ -86,6 +87,9 @@ public class TestSdsmDirectionalLightShadow extends SimpleApplication implements
 
     public static void main(String[] args) {
         TestSdsmDirectionalLightShadow app = new TestSdsmDirectionalLightShadow();
+        AppSettings settings = new AppSettings(true);
+        settings.setGraphicsDebug(true);
+        app.setSettings(settings);
         app.start();
     }