diff --git a/src/ShaderGen/3d/Std3DMaterial.cpp b/src/ShaderGen/3d/Std3DMaterial.cpp
index da9c9862..de680407 100644
--- a/src/ShaderGen/3d/Std3DMaterial.cpp
+++ b/src/ShaderGen/3d/Std3DMaterial.cpp
@@ -3,6 +3,7 @@
 #include<hgl/graph/mtl/3d/Material3DCreateConfig.h>
 #include<hgl/graph/mtl/UBOCommon.h>
 #include"common/MFGetPosition.h"
+#include"common/MFGetNormal.h"
 #include"common/MFRectPrimitive.h"
 
 STD_MTL_NAMESPACE_BEGIN
@@ -36,6 +37,13 @@ bool Std3DMaterial::CustomVertexShader(ShaderCreateInfoVertex *vsc)
     else
         vsc->AddFunction(cfg->camera?func::GetPosition3DCamera:func::GetPosition3D);
 
+    //if(cfg->camera
+    // &&cfg->local_to_world)
+    //{
+    //    vsc->AddFunction(func::GetNormalMatrix);
+    //    vsc->AddFunction(func::GetNormal);
+    //}
+
     mci->AddUBO(VK_SHADER_STAGE_VERTEX_BIT,
                 DescriptorSetType::Global,
                 SBS_ViewportInfo);
diff --git a/src/ShaderGen/CMakeLists.txt b/src/ShaderGen/CMakeLists.txt
index da6be99a..6a5bb1e8 100644
--- a/src/ShaderGen/CMakeLists.txt
+++ b/src/ShaderGen/CMakeLists.txt
@@ -39,7 +39,9 @@ set(STD_MTL_HEADER_PATH  ${ROOT_INCLUDE_PATH}/hgl/graph/mtl)
 SET(SHADERGEN_COMMON_FILES  ${STD_MTL_HEADER_PATH}/UBOCommon.h
                             ${STD_MTL_HEADER_PATH}/SamplerName.h
                             common/MFCommon.h
-                            common/MFGetPosition.h)
+                            common/MFGetPosition.h
+                            common/MFGetNormal.h
+)
 
 SOURCE_GROUP("Common" FILES ${SHADERGEN_COMMON_FILES})
 
diff --git a/src/ShaderGen/common/MFGetNormal.h b/src/ShaderGen/common/MFGetNormal.h
new file mode 100644
index 00000000..bf55395b
--- /dev/null
+++ b/src/ShaderGen/common/MFGetNormal.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include<hgl/graph/mtl/StdMaterial.h>
+#include<hgl/graph/CoordinateSystem.h>
+STD_MTL_NAMESPACE_BEGIN
+namespace func
+{
+    constexpr const char *GetNormalMatrix=R"(
+mat3 GetNormalMatrix()
+{
+    return mat3(camera.view*GetLocalToWorld());
+}
+)";
+
+    constexpr const char *GetNormal=R"(
+vec3 GetNormal(mat3 normal_matrix,vec3 normal)
+{
+    return normalize(normal_matrix*normal);
+}
+)";
+}//namespace func
+STD_MTL_NAMESPACE_END