diff --git a/example/Vulkan/first_triangle.cpp b/example/Vulkan/first_triangle.cpp
index 18f4f9d7..04ef5541 100644
--- a/example/Vulkan/first_triangle.cpp
+++ b/example/Vulkan/first_triangle.cpp
@@ -4,6 +4,7 @@
 #include"VulkanAppFramework.h"
 #include<hgl/math/Math.h>
 #include<hgl/filesystem/FileSystem.h>
+#include<hgl/graph/SceneInfo.h>
 
 using namespace hgl;
 using namespace hgl::graph;
@@ -55,6 +56,8 @@ private:
 
     bool InitUBO()
     {
+        MVPMatrix *mvp=new MVPMatrix;
+
         const VkExtent2D extent=sc_render_target->GetExtent();
 
         cam.width=extent.width;
diff --git a/inc/hgl/graph/RenderList.h b/inc/hgl/graph/RenderList.h
index bc34fa64..6cb259a6 100644
--- a/inc/hgl/graph/RenderList.h
+++ b/inc/hgl/graph/RenderList.h
@@ -5,7 +5,7 @@
 #include<hgl/graph/Camera.h>
 #include<hgl/graph/SceneNode.h>
 #include<hgl/graph/VKArrayBuffer.h>
-#include<hgl/graph/MVPMatrix.h>
+#include<hgl/graph/SceneInfo.h>
 #include<hgl/type/Color4f.h>
 #include<hgl/type/Sets.h>
 namespace hgl
diff --git a/inc/hgl/graph/MVPMatrix.h b/inc/hgl/graph/SceneInfo.h
similarity index 87%
rename from inc/hgl/graph/MVPMatrix.h
rename to inc/hgl/graph/SceneInfo.h
index b1024e16..982ed563 100644
--- a/inc/hgl/graph/MVPMatrix.h
+++ b/inc/hgl/graph/SceneInfo.h
@@ -1,5 +1,5 @@
-#ifndef HGL_GRAPH_MVP_MATRIX_INCLUDE
-#define HGL_GRAPH_MVP_MATRIX_INCLUDE
+#ifndef HGL_GRAPH_SCENE_INFO_INCLUDE
+#define HGL_GRAPH_SCENE_INFO_INCLUDE
 
 #include<hgl/math/Matrix.h>
 #include<hgl/CompOperator.h>
@@ -33,4 +33,4 @@ namespace hgl
         };//struct MVPMatrix
     }//namespace graph
 }//namespace hgl
-#endif//HGL_GRAPH_MVP_MATRIX_INCLUDE
+#endif//HGL_GRAPH_SCENE_INFO_INCLUDE