diff --git a/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp b/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp
index 9bafa3bb..fe64a413 100644
--- a/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp
+++ b/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp
@@ -237,16 +237,7 @@ private:
         texture.color_sampler=CreateSampler(texture.color);
         texture.normal_sampler=CreateSampler(texture.normal);
       
-        {
-            MaterialParameters *mp_global=sp_gbuffer.material_instance->GetMP(DescriptorSetsType::Global);
-        
-            if(!mp_global)
-                return(false);
-
-            if(!mp_global->BindUBO("g_camera",GetCameraInfoBuffer()))return(false);
-
-            mp_global->Update();
-        }
+        BindCameraUBO(sp_gbuffer.material_instance);
 
         {
             MaterialParameters *mp=sp_gbuffer.material_instance->GetMP(DescriptorSetsType::Value);
@@ -259,16 +250,7 @@ private:
             mp->Update();
         }
         
-        {
-            MaterialParameters *mp_global=sp_composition.material_instance->GetMP(DescriptorSetsType::Global);
-        
-            if(!mp_global)
-                return(false);
-
-            if(!mp_global->BindUBO("g_camera",GetCameraInfoBuffer()))return(false);
-
-            mp_global->Update();
-        }
+        BindCameraUBO(sp_composition.material_instance);
 
         {            
             MaterialParameters *mp=sp_composition.material_instance->GetMP(DescriptorSetsType::Value);
diff --git a/example/common/VulkanAppFramework.h b/example/common/VulkanAppFramework.h
index 90186ef1..a5dee649 100644
--- a/example/common/VulkanAppFramework.h
+++ b/example/common/VulkanAppFramework.h
@@ -367,6 +367,20 @@ public:
         return ubo_camera_info;
     }
 
+    bool BindCameraUBO(MaterialInstance *mi)
+    {
+        MaterialParameters *mp_global=mi->GetMP(DescriptorSetsType::Global);
+
+        if(!mp_global)
+            return(false);
+
+        if(!mp_global->BindUBO("g_camera",ubo_camera_info))return(false);
+
+        mp_global->Update();
+
+        return(true);
+    }
+
     virtual void BuildCommandBuffer(uint32_t index)=0;
 
     inline bool isPush(enum class KeyboardButton kb)const{return key_status[size_t(kb)];}