diff --git a/inc/hgl/graph/mtl/Material2DCreateConfig.h b/inc/hgl/graph/mtl/Material2DCreateConfig.h
index f1e9149e..e62bebe7 100644
--- a/inc/hgl/graph/mtl/Material2DCreateConfig.h
+++ b/inc/hgl/graph/mtl/Material2DCreateConfig.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include<hgl/graph/mtl/MaterialLibrary.h>
 #include<hgl/graph/mtl/MaterialConfig.h>
 #include<hgl/graph/CoordinateSystem.h>
 #include<hgl/graph/VertexAttrib.h>
@@ -49,7 +50,8 @@ public:
     }
 };//struct Material2DCreateConfig:public MaterialCreateConfig
 
-MaterialCreateInfo *CreateVertexColor2D(const GPUDeviceAttribute *dev_attr,const Material2DCreateConfig *);
+DEFINE_MATERIAL_FACTORY_CLASS(VertexColor2D,CreateVertexColor2D,const Material2DCreateConfig)
+
 MaterialCreateInfo *CreatePureColor2D(const GPUDeviceAttribute *dev_attr,const Material2DCreateConfig *);
 
 MaterialCreateInfo *CreateLerpLine2D(const GPUDeviceAttribute *dev_attr,const Material2DCreateConfig *);
diff --git a/inc/hgl/graph/mtl/MaterialConfig.h b/inc/hgl/graph/mtl/MaterialConfig.h
index 4186498c..1cb74cc8 100644
--- a/inc/hgl/graph/mtl/MaterialConfig.h
+++ b/inc/hgl/graph/mtl/MaterialConfig.h
@@ -32,6 +32,8 @@ public:
 
         material_instance=false;
 
+        hgl_zero(rt_output);
+
         shader_stage_flag_bit=VK_SHADER_STAGE_VERTEX_BIT|VK_SHADER_STAGE_FRAGMENT_BIT;
 
         prim=p;
diff --git a/inc/hgl/graph/mtl/MaterialLibrary.h b/inc/hgl/graph/mtl/MaterialLibrary.h
index ce1f5839..cca03e68 100644
--- a/inc/hgl/graph/mtl/MaterialLibrary.h
+++ b/inc/hgl/graph/mtl/MaterialLibrary.h
@@ -44,9 +44,11 @@ public:
     }
 };//class RegistryMaterialFactoryClass
 
-#define DEFINE_MATERIAL_FACTORY(name) namespace{static RegistryMaterialFactoryClass<MaterialFactory##name> MaterialFactoryInstance_##name;}
-
 #define DEFINE_MATERIAL_FACTORY_CLASS(name,create_func,cfg_type) \
+MaterialCreateInfo *Create##name(const GPUDeviceAttribute *dev_attr,cfg_type *); \
+\
+namespace \
+{   \
     class MaterialFactory##name:public MaterialFactory  \
     {   \
     public: \
@@ -63,7 +65,8 @@ public:
         }   \
     };  \
     \
-    DEFINE_MATERIAL_FACTORY(name)
+    static RegistryMaterialFactoryClass<MaterialFactory##name> MaterialFactoryInstance_##name;   \
+}
 
 MaterialCreateInfo *CreateMaterialCreateInfo(const GPUDeviceAttribute *dev_attr,const MaterialName &,MaterialCreateConfig *cfg);
 
diff --git a/src/ShaderGen/2d/M_VertexColor2D.cpp b/src/ShaderGen/2d/M_VertexColor2D.cpp
index 56907574..fbc67229 100644
--- a/src/ShaderGen/2d/M_VertexColor2D.cpp
+++ b/src/ShaderGen/2d/M_VertexColor2D.cpp
@@ -1,6 +1,5 @@
 #include"Std2DMaterial.h"
 #include<hgl/shadergen/MaterialCreateInfo.h>
-#include<hgl/graph/mtl/MaterialLibrary.h>
 
 STD_MTL_NAMESPACE_BEGIN
 namespace
@@ -62,26 +61,4 @@ MaterialCreateInfo *CreateVertexColor2D(const GPUDeviceAttribute *dev_attr,const
     return mvc2d.Create(dev_attr);
 }
 
-class MaterialFactoryVertexColor2D:public MaterialFactory
-{
-public:
-
-    const MaterialName &GetName()const override
-    {
-        static MaterialName mtl_name("VertexColor2D");
-
-        return mtl_name;
-    }
-
-    MaterialCreateInfo *Create(const GPUDeviceAttribute *dev_attr,MaterialCreateConfig *cfg) override
-    {
-        return CreateVertexColor2D(dev_attr,(Material2DCreateConfig *)cfg);
-    }
-};//class MaterialFactoryVertexColor2D:public MaterialFactory
-
-static RegistryMaterialFactoryClass<MaterialFactoryVertexColor2D> MaterialFactoryInstance_VertexColor2D;
-
-
-//DEFINE_MATERIAL_FACTORY_CLASS(VertexColor2D,CreateVertexColor2D,Material2DCreateConfig)
-
 STD_MTL_NAMESPACE_END