diff --git a/example/Vulkan/first_triangle.cpp b/example/Vulkan/first_triangle.cpp
index 5d52e55f..c8244cfc 100644
--- a/example/Vulkan/first_triangle.cpp
+++ b/example/Vulkan/first_triangle.cpp
@@ -8,7 +8,7 @@
 #include<hgl/graph/SceneInfo.h>
 #include<hgl/graph/VKVertexInputConfig.h>
 #include<hgl/graph/VKRenderablePrimitiveCreater.h>
-#include<hgl/graph/mtl/2d/VertexColor2D.h>
+#include<hgl/graph/mtl/2d/Material2DConfig.h>
 
 using namespace hgl;
 using namespace hgl::graph;
diff --git a/example/Vulkan/second_triangle.cpp b/example/Vulkan/second_triangle.cpp
index beb698b8..3b656632 100644
--- a/example/Vulkan/second_triangle.cpp
+++ b/example/Vulkan/second_triangle.cpp
@@ -6,7 +6,7 @@
 #include<hgl/filesystem/FileSystem.h>
 #include<hgl/graph/SceneInfo.h>
 #include<hgl/graph/VKRenderablePrimitiveCreater.h>
-#include<hgl/graph/mtl/2d/VertexColor2D.h>
+#include<hgl/graph/mtl/2d/Material2DConfig.h>
 
 using namespace hgl;
 using namespace hgl::graph;
diff --git a/example/Vulkan/third_triangle.cpp b/example/Vulkan/third_triangle.cpp
index 16ae8864..add1d2a1 100644
--- a/example/Vulkan/third_triangle.cpp
+++ b/example/Vulkan/third_triangle.cpp
@@ -5,7 +5,7 @@
 #include<hgl/math/Math.h>
 #include<hgl/filesystem/FileSystem.h>
 #include<hgl/graph/VKRenderablePrimitiveCreater.h>
-#include<hgl/graph/mtl/2d/VertexColor2D.h>
+#include<hgl/graph/mtl/2d/Material2DConfig.h>
 #include<hgl/graph/RenderList.h>
 
 using namespace hgl;
diff --git a/inc/hgl/graph/VKDeviceCreater.h b/inc/hgl/graph/VKDeviceCreater.h
index 9e42091f..20f9682b 100644
--- a/inc/hgl/graph/VKDeviceCreater.h
+++ b/inc/hgl/graph/VKDeviceCreater.h
@@ -174,7 +174,7 @@ public:
 
     const int Find(const VkFormat fmt)const
     {
-        for(int i=0;i<count;i++)
+        for(uint i=0;i<count;i++)
             if(fmt==formats[i])
                 return i;
 
@@ -192,7 +192,7 @@ public:
 
     const int Find(const VkColorSpaceKHR cs)const
     {
-        for(int i=0;i<count;i++)
+        for(uint i=0;i<count;i++)
             if(cs==colorspaces[i])
                 return i;
 
diff --git a/inc/hgl/graph/mtl/2d/Material2DConfig.h b/inc/hgl/graph/mtl/2d/Material2DConfig.h
index 12065bac..1772a9fc 100644
--- a/inc/hgl/graph/mtl/2d/Material2DConfig.h
+++ b/inc/hgl/graph/mtl/2d/Material2DConfig.h
@@ -23,5 +23,7 @@ public:
         local_to_world=false;
     }
 };//struct Material2DConfig:public MaterialConfig
+
+MaterialCreateInfo *CreateVertexColor2D(const Material2DConfig *);
 STD_MTL_NAMESPACE_END
 #endif//HGL_GRAPH_MTL_2D_CONFIG_INCLUDE
diff --git a/inc/hgl/graph/mtl/2d/VertexColor2D.h b/inc/hgl/graph/mtl/2d/VertexColor2D.h
deleted file mode 100644
index 989ed5ed..00000000
--- a/inc/hgl/graph/mtl/2d/VertexColor2D.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef HGL_GRAPH_MTL_2D_VERTEX2D_INCLUDE
-#define HGL_GRAPH_MTL_2D_VERTEX2D_INCLUDE
-
-#include<hgl/graph/mtl/2d/Material2DConfig.h>
-
-STD_MTL_NAMESPACE_BEGIN
-MaterialCreateInfo *CreateVertexColor2D(const Material2DConfig *);
-STD_MTL_NAMESPACE_END
-#endif//HGL_GRAPH_MTL_2D_VERTEX2D_INCLUDE
diff --git a/src/ShaderGen/CMakeLists.txt b/src/ShaderGen/CMakeLists.txt
index ed140d2f..c3ace164 100644
--- a/src/ShaderGen/CMakeLists.txt
+++ b/src/ShaderGen/CMakeLists.txt
@@ -47,7 +47,6 @@ include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 SET(STD_MTL_2D_HEADER_PATH ${STD_MTL_HEADER_PATH}/2d)
 
 SET(STD_MTL_2D_SOURCE_FILES	${STD_MTL_2D_HEADER_PATH}/Material2DConfig.h
-                            ${STD_MTL_2D_HEADER_PATH}/VertexColor2D.h
                             2d/Std2DMaterial.h
                             2d/Std2DMaterial.cpp
                             2d/VertexColor2D.cpp)