diff --git a/example/Vulkan/OffscreenRender.cpp b/example/Vulkan/OffscreenRender.cpp
index d51c8965..4af8c8ce 100644
--- a/example/Vulkan/OffscreenRender.cpp
+++ b/example/Vulkan/OffscreenRender.cpp
@@ -16,7 +16,7 @@ class TestApp:public CameraAppFramework
         Camera cam;
 
         MaterialInstance *  material_instance   =nullptr;
-        GPUBuffer *            ubo_world_matrix    =nullptr;
+        GPUBuffer *         ubo_world_matrix    =nullptr;
     };
 
     struct:public RenderObject
@@ -34,8 +34,8 @@ class TestApp:public CameraAppFramework
         Pipeline *          pipeline            =nullptr;
         RenderableInstance *renderable_instance =nullptr;
 
-        SceneNode                   scene_root;
-        RenderList                  render_list;
+        SceneNode           scene_root;
+        RenderList          render_list;
     }cube;
 
 public:
diff --git a/example/common/VulkanAppFramework.h b/example/common/VulkanAppFramework.h
index 6aa13f48..8f13b405 100644
--- a/example/common/VulkanAppFramework.h
+++ b/example/common/VulkanAppFramework.h
@@ -46,22 +46,22 @@ protected:
 
 protected:
 
-    GPUDevice *          device                      =nullptr;
+    GPUDevice *             device                      =nullptr;
     SwapchainRenderTarget * sc_render_target            =nullptr;
 
 protected:
 
-            int32_t                 swap_chain_count            =0;
+            int32_t         swap_chain_count            =0;
 
-    GPUCmdBuffer **        cmd_buf                     =nullptr;
+    GPUCmdBuffer **         cmd_buf                     =nullptr;
 
-            Color4f                 clear_color;
+            Color4f         clear_color;
 
 protected:
 
-    RenderResource *              db                          =nullptr;
+    RenderResource *        db                          =nullptr;
 
-            bool                    key_status[kbRangeSize];
+            bool            key_status[kbRangeSize];
 
 public:
 
@@ -88,7 +88,7 @@ public:
 
         InitNativeWindowSystem();
 
-        VK_NAMESPACE::InitVulkanProperties();
+        InitVulkanProperties();
 
         win=CreateRenderWindow(OS_TEXT("VulkanTest"));
         if(!win)
@@ -98,7 +98,7 @@ public:
             return(false);
 
         {
-            VK_NAMESPACE::CreateInstanceLayerInfo cili;
+            CreateInstanceLayerInfo cili;
 
             hgl_zero(cili);
 
@@ -332,14 +332,14 @@ class CameraAppFramework:public VulkanApplicationFramework
 {
 private:
 
-    GPUBuffer *            ubo_world_matrix    =nullptr;
+    GPUBuffer *     ubo_world_matrix    =nullptr;
 
 protected:
 
-    ControlCamera               camera;
-    float                       move_speed=1;
+    ControlCamera   camera;
+    float           move_speed=1;
 
-    Vector2f                    mouse_last_pos;
+    Vector2f        mouse_last_pos;
 
 public:
 
diff --git a/inc/hgl/graph/VKDevice.h b/inc/hgl/graph/VKDevice.h
index f9f8d79a..b93a81b6 100644
--- a/inc/hgl/graph/VKDevice.h
+++ b/inc/hgl/graph/VKDevice.h
@@ -52,7 +52,7 @@ public:
     virtual ~GPUDevice();
 
     operator    VkDevice                                ()      {return attr->device;}
-                GPUDeviceAttribute *GetGPUDeviceAttribute  ()      {return attr;}
+                GPUDeviceAttribute *GetDeviceAttribute  ()      {return attr;}
 
                 VkSurfaceKHR        GetSurface          ()      {return attr->surface;}
                 VkDevice            GetDevice           ()const {return attr->device;}
@@ -91,8 +91,8 @@ private: //Buffer相关
 
 public: //Buffer相关
 
-    GPUBuffer *   CreateBuffer(VkBufferUsageFlags buf_usage,VkDeviceSize size,const void *data,   SharingMode sharing_mode=SharingMode::Exclusive);
-    GPUBuffer *   CreateBuffer(VkBufferUsageFlags buf_usage,VkDeviceSize size,                    SharingMode sharing_mode=SharingMode::Exclusive){return CreateBuffer(buf_usage,size,nullptr,sharing_mode);}
+    GPUBuffer *     CreateBuffer(VkBufferUsageFlags buf_usage,VkDeviceSize size,const void *data,   SharingMode sharing_mode=SharingMode::Exclusive);
+    GPUBuffer *     CreateBuffer(VkBufferUsageFlags buf_usage,VkDeviceSize size,                    SharingMode sharing_mode=SharingMode::Exclusive){return CreateBuffer(buf_usage,size,nullptr,sharing_mode);}
 
     VAB *           CreateVAB   (VkFormat format,uint32_t count,const void *data,   SharingMode sharing_mode=SharingMode::Exclusive);
     VAB *           CreateVAB   (VkFormat format,uint32_t count,                    SharingMode sharing_mode=SharingMode::Exclusive){return CreateVAB(format,count,nullptr,sharing_mode);}