diff --git a/inc/hgl/graph/mtl/Material2DCreateConfig.h b/inc/hgl/graph/mtl/Material2DCreateConfig.h
index 9013fd76..eece84c8 100644
--- a/inc/hgl/graph/mtl/Material2DCreateConfig.h
+++ b/inc/hgl/graph/mtl/Material2DCreateConfig.h
@@ -31,6 +31,25 @@ public:
         else
             position_format=VAT_VEC2;
     }
+
+    int Comp(const Material2DCreateConfig &cfg)const
+    {
+        int off=MaterialCreateConfig::Comp(cfg);
+
+        if(off)return off;
+
+        off=(int)coordinate_system-(int)cfg.coordinate_system;
+        if(off)return off;
+
+        off=local_to_world-cfg.local_to_world;
+        if(off)return off;
+
+        off=position_format.Comp(cfg.position_format);
+        
+        return off;
+    }
+
+    CompOperator(const Material2DCreateConfig &,Comp)
 };//struct Material2DCreateConfig:public MaterialCreateConfig
 
 MaterialCreateInfo *CreateVertexColor2D(const Material2DCreateConfig *);
diff --git a/inc/hgl/graph/mtl/Material3DCreateConfig.h b/inc/hgl/graph/mtl/Material3DCreateConfig.h
index 161ac86a..e22256b1 100644
--- a/inc/hgl/graph/mtl/Material3DCreateConfig.h
+++ b/inc/hgl/graph/mtl/Material3DCreateConfig.h
@@ -30,6 +30,25 @@ public:
 
 //        reverse_depth=false;
     }
+
+    int Comp(const Material3DCreateConfig &cfg)const
+    {
+        int off=MaterialCreateConfig::Comp(cfg);
+
+        if(off)return off;
+
+        off=camera-cfg.camera;
+        if(off)return off;
+
+        off=local_to_world-cfg.local_to_world;
+        if(off)return off;
+
+        off=position_format.Comp(cfg.position_format);
+
+        return off;
+    }
+
+    CompOperator(const Material3DCreateConfig &,Comp)
 };//struct Material3DCreateConfig:public MaterialCreateConfig
 
 MaterialCreateInfo *CreateVertexColor3D(const Material3DCreateConfig *);
diff --git a/inc/hgl/graph/mtl/MaterialConfig.h b/inc/hgl/graph/mtl/MaterialConfig.h
index 42e4ae4f..18b0e837 100644
--- a/inc/hgl/graph/mtl/MaterialConfig.h
+++ b/inc/hgl/graph/mtl/MaterialConfig.h
@@ -37,6 +37,23 @@ public:
 
         prim=p;
     }
+
+    int Comp(const MaterialCreateConfig &cfg)const
+    {
+        int off;
+
+        off=hgl_cmp(rt_output,cfg.rt_output);
+
+        if(off)return(off);
+
+        off=(int)prim-(int)cfg.prim;
+
+        if(off)return(off);
+
+        return shader_stage_flag_bit-cfg.shader_stage_flag_bit;
+    }
+
+    CompOperator(const MaterialCreateConfig &,Comp)
 };//struct MaterialCreateConfig
 STD_MTL_NAMESPACE_END
 #endif//HGL_GRAPH_MTL_CONFIG_INCLUDE