diff --git a/example/Gizmo/PlaneGrid3D.cpp b/example/Gizmo/PlaneGrid3D.cpp
index 5560be70..35e17352 100644
--- a/example/Gizmo/PlaneGrid3D.cpp
+++ b/example/Gizmo/PlaneGrid3D.cpp
@@ -30,7 +30,7 @@ private:
         cfg.local_to_world=true;
         cfg.position_format=VAT_VEC2;
 
-        material=db->LoadMaterial("Std3D/VertexLum2D",&cfg);
+        material=db->LoadMaterial("Std3D/VertexLum3D",&cfg);
         if(!material)return(false);
 
         Color4f GridColor;
diff --git a/example/Gizmo/RayPicking.cpp b/example/Gizmo/RayPicking.cpp
index 05e24884..478ea4e0 100644
--- a/example/Gizmo/RayPicking.cpp
+++ b/example/Gizmo/RayPicking.cpp
@@ -54,10 +54,11 @@ private:
 
         cfg.local_to_world=true;
 
-        {
+        {            
+            cfg.mtl_name="VertexLuminance2D";       //注意必须用不同名字，未来改名材质文件名+cfg hash名
             cfg.position_format=VAT_VEC2;
 
-            mtl_plane_grid=db->LoadMaterial("Std3D/VertexLum2D",&cfg);
+            mtl_plane_grid=db->LoadMaterial("Std3D/VertexLum3D",&cfg);
             if(!mtl_plane_grid)return(false);
        
             mi_plane_grid=db->CreateMaterialInstance(mtl_plane_grid,nullptr,&white_color);