diff --git a/inc/hgl/graph/VKDevice.h b/inc/hgl/graph/VKDevice.h
index 1592a328..3511a4ec 100644
--- a/inc/hgl/graph/VKDevice.h
+++ b/inc/hgl/graph/VKDevice.h
@@ -56,7 +56,7 @@ private:
 
 private:
 
-    friend GPUDevice *CreateRenderDevice(VkInstance inst,const GPUPhysicalDevice *physical_device,VkSurfaceKHR surface,const VkExtent2D &extent);
+    friend GPUDevice *CreateRenderDevice(VulkanInstance *inst,const GPUPhysicalDevice *physical_device,VkSurfaceKHR surface,const VkExtent2D &extent);
 
     GPUDevice(GPUDeviceAttribute *da);
 
@@ -95,14 +95,6 @@ public:
                     return Resize(extent);
                 }
 
-public: //
-
-    template<typename T>
-    T *GetProc(const char *name)
-    {
-        return reinterpret_cast<T>(vkGetDeviceProcAddr(attr->device,name));
-    }
-
 public: //内存相关
 
     GPUMemory *CreateMemory(const VkMemoryRequirements &,const uint32_t properties);
diff --git a/inc/hgl/graph/VKDeviceAttribute.h b/inc/hgl/graph/VKDeviceAttribute.h
index ddf13877..b65633b0 100644
--- a/inc/hgl/graph/VKDeviceAttribute.h
+++ b/inc/hgl/graph/VKDeviceAttribute.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include<hgl/graph/VKInstance.h>
 #include<hgl/graph/VKTexture.h>
 
 VK_NAMESPACE_BEGIN
@@ -8,7 +9,7 @@ constexpr uint32_t ERROR_FAMILY_INDEX=UINT32_MAX;
 
 struct GPUDeviceAttribute
 {
-    VkInstance                          instance        =VK_NULL_HANDLE;
+    VulkanInstance *                    instance        =nullptr;
     const GPUPhysicalDevice *           physical_device =nullptr;
     
     VkPhysicalDeviceDriverPropertiesKHR driver_properties;
@@ -41,11 +42,19 @@ struct GPUDeviceAttribute
 
 public:
 
-    GPUDeviceAttribute(VkInstance inst,const GPUPhysicalDevice *pd,VkSurfaceKHR s);
+    GPUDeviceAttribute(VulkanInstance *inst,const GPUPhysicalDevice *pd,VkSurfaceKHR s);
     ~GPUDeviceAttribute();
 
     bool CheckMemoryType(uint32_t typeBits,VkMemoryPropertyFlags properties,uint32_t *typeIndex) const;
 
     void Refresh();
+
+public:
+
+    template<typename T>
+    T *GetDeviceProc(const char *name)
+    {
+        return instance->GetDeviceProc<T>(device,name);
+    }
 };//class GPUDeviceAttribute
 VK_NAMESPACE_END
diff --git a/inc/hgl/graph/VKInstance.h b/inc/hgl/graph/VKInstance.h
index 57080469..5187d71d 100644
--- a/inc/hgl/graph/VKInstance.h
+++ b/inc/hgl/graph/VKInstance.h
@@ -57,6 +57,10 @@ VK_NAMESPACE_BEGIN
 
         ObjectList<GPUPhysicalDevice> physical_devices;
 
+    private:
+    
+        PFN_vkGetDeviceProcAddr GetDeviceProcAddr;
+
     private:
 
         friend VulkanInstance *CreateInstance(const AnsiString &app_name,VKDebugOut *out=nullptr,CreateInstanceLayerInfo *cili=nullptr);
@@ -77,6 +81,16 @@ VK_NAMESPACE_BEGIN
         {
             return reinterpret_cast<T>(vkGetInstanceProcAddr(inst,name));
         }
+
+        template<typename T>
+        T *GetDeviceProc(const char *name)
+        {
+            if(!GetDeviceProcAddr)return(nullptr);
+
+            return reinterpret_cast<T>(GetDeviceProcAddr(name));
+        }
+
+        void DestroySurface(VkSurfaceKHR);
     };//class VulkanInstance
     
             void                            InitVulkanInstanceProperties();
diff --git a/src/SceneGraph/Vulkan/VKDeviceAttribute.cpp b/src/SceneGraph/Vulkan/VKDeviceAttribute.cpp
index 32c1520a..86fe13d2 100644
--- a/src/SceneGraph/Vulkan/VKDeviceAttribute.cpp
+++ b/src/SceneGraph/Vulkan/VKDeviceAttribute.cpp
@@ -5,25 +5,9 @@
 #include<iostream>
 
 VK_NAMESPACE_BEGIN
-
-namespace
-{
-    PFN_vkGetPhysicalDeviceSurfaceCapabilities2KHR vkGetPhysicalDeviceSurfaceCapabilities2KHR = NULL;
-    PFN_vkGetPhysicalDeviceSurfaceFormats2KHR      vkGetPhysicalDeviceSurfaceFormats2KHR = NULL;
-    PFN_vkSetHdrMetadataEXT                        vkSetHdrMetadataEXT = NULL;
-
-    PFN_vkAcquireFullScreenExclusiveModeEXT        vkAcquireFullScreenExclusiveModeEXT = NULL;
-    PFN_vkReleaseFullScreenExclusiveModeEXT        vkReleaseFullScreenExclusiveModeEXT = NULL;
-}
-
-bool InitPhysicsDeviceSurfaceAPI2()
-{
-    return(false);
-}
-
 void SavePipelineCacheData(VkDevice device,VkPipelineCache cache,const VkPhysicalDeviceProperties &pdp);
 
-GPUDeviceAttribute::GPUDeviceAttribute(VkInstance inst,const GPUPhysicalDevice *pd,VkSurfaceKHR s)
+GPUDeviceAttribute::GPUDeviceAttribute(VulkanInstance *inst,const GPUPhysicalDevice *pd,VkSurfaceKHR s)
 {
     instance=inst;
     physical_device=pd;
@@ -50,7 +34,7 @@ GPUDeviceAttribute::~GPUDeviceAttribute()
         vkDestroyDevice(device,nullptr);
 
     if(surface)
-        vkDestroySurfaceKHR(instance,surface,nullptr);
+        instance->DestroySurface(surface);
 }
 
 bool GPUDeviceAttribute::CheckMemoryType(uint32_t typeBits,VkMemoryPropertyFlags properties,uint32_t *typeIndex) const
diff --git a/src/SceneGraph/Vulkan/VKDeviceCreater.cpp b/src/SceneGraph/Vulkan/VKDeviceCreater.cpp
index 12dfe501..cea75a78 100644
--- a/src/SceneGraph/Vulkan/VKDeviceCreater.cpp
+++ b/src/SceneGraph/Vulkan/VKDeviceCreater.cpp
@@ -371,7 +371,7 @@ namespace
 constexpr size_t VK_DRIVER_ID_RANGE_SIZE=VK_DRIVER_ID_END_RANGE-VK_DRIVER_ID_BEGIN_RANGE+1;
 #endif//VK_DRIVER_ID_RANGE_SIZE
 
-GPUDevice *CreateRenderDevice(VkInstance inst,const GPUPhysicalDevice *physical_device,VkSurfaceKHR surface,const VkExtent2D &extent)
+GPUDevice *CreateRenderDevice(VulkanInstance *inst,const GPUPhysicalDevice *physical_device,VkSurfaceKHR surface,const VkExtent2D &extent)
 {
     #ifdef _DEBUG
     {
@@ -387,7 +387,7 @@ GPUDevice *CreateRenderDevice(VkInstance inst,const GPUPhysicalDevice *physical_
     if(device_attr->graphics_family==ERROR_FAMILY_INDEX)
         return(nullptr);
 
-    device_attr->device=CreateDevice(inst,physical_device,device_attr->graphics_family);
+    device_attr->device=CreateDevice(*inst,physical_device,device_attr->graphics_family);
 
     if(!device_attr->device)
         return(nullptr);
@@ -436,7 +436,7 @@ GPUDevice *CreateRenderDevice(VulkanInstance *inst,Window *win,const GPUPhysical
     extent.width=win->GetWidth();
     extent.height=win->GetHeight();
 
-    GPUDevice *device=CreateRenderDevice(*inst,pd,surface,extent);
+    GPUDevice *device=CreateRenderDevice(inst,pd,surface,extent);
 
     if(!device)
     {
diff --git a/src/SceneGraph/Vulkan/VKInstance.cpp b/src/SceneGraph/Vulkan/VKInstance.cpp
index 70889b9f..dd0483ee 100644
--- a/src/SceneGraph/Vulkan/VKInstance.cpp
+++ b/src/SceneGraph/Vulkan/VKInstance.cpp
@@ -87,6 +87,8 @@ VulkanInstance::VulkanInstance(VkInstance i,VKDebugOut *out)
 
         delete[] pd_list;
     }
+
+    GetDeviceProcAddr = (PFN_vkGetDeviceProcAddr)vkGetInstanceProcAddr(inst, "vkGetDeviceProcAddr");
 }
 
 VulkanInstance::~VulkanInstance()
@@ -105,4 +107,9 @@ const GPUPhysicalDevice *VulkanInstance::GetDevice(VkPhysicalDeviceType type)con
 
     return(nullptr);
 }
+
+void VulkanInstance::DestroySurface(VkSurfaceKHR surface)
+{
+    vkDestroySurfaceKHR(inst,surface,nullptr);
+}
 VK_NAMESPACE_END