diff --git a/CMSceneGraph b/CMSceneGraph
index 04a2736b..a2c83601 160000
--- a/CMSceneGraph
+++ b/CMSceneGraph
@@ -1 +1 @@
-Subproject commit 04a2736bac9fe0b8c9c84d4dedd5e455071e4e64
+Subproject commit a2c8360172946f296c0c3171ebb3a7d03032607d
diff --git a/example/Vulkan/Cubemap.cpp b/example/Vulkan/Cubemap.cpp
index 830d7da3..e8bc80ca 100644
--- a/example/Vulkan/Cubemap.cpp
+++ b/example/Vulkan/Cubemap.cpp
@@ -200,7 +200,8 @@ public:
             return(false);
 
         camera->pos=Vector3f(10,10,0);
-        //camera->target=Vector3f(0,0,0);
+
+        camera_control->SetTarget(Vector3f(0,0,0));
 
         //camera->Refresh();      //更新矩阵计算
 
diff --git a/example/common/VulkanAppFramework.h b/example/common/VulkanAppFramework.h
index e9da23a5..4663349e 100644
--- a/example/common/VulkanAppFramework.h
+++ b/example/common/VulkanAppFramework.h
@@ -350,10 +350,6 @@ protected:
             Vector2f pos(x,y);
             Vector2f gap=pos-mouse_last_pos;
 
-            bool update=false;
-            //if(gap.x!=0){update=true;if(left)camera->HoriRotate( gap.x/10.0f);else camera->WrapHoriRotate(gap.x);}
-            //if(gap.y!=0){update=true;if(left)camera->VertRotate(-gap.y/10.0f);else camera->WrapVertRotate(gap.y);}
-
             camera->Rotate(gap,(cur_time-last_time)*5);
 
             last_time=cur_time;