diff --git a/inc/hgl/graph/vulkan/VKPhysicalDevice.h b/inc/hgl/graph/vulkan/VKPhysicalDevice.h
index 4753054c..35395ac0 100644
--- a/inc/hgl/graph/vulkan/VKPhysicalDevice.h
+++ b/inc/hgl/graph/vulkan/VKPhysicalDevice.h
@@ -1,10 +1,10 @@
-#pragma once
+#pragma once
 
 #include<hgl/graph/vulkan/VK.h>
 #include<hgl/type/BaseString.h>
 
 VK_NAMESPACE_BEGIN
-struct PhysicalDevice
+class PhysicalDevice
 {
     VkInstance                          instance=nullptr;
     VkPhysicalDevice                    physical_device=nullptr;
@@ -20,6 +20,9 @@ public:
     PhysicalDevice(VkInstance,VkPhysicalDevice);
     ~PhysicalDevice()=default;
 
+    operator VkPhysicalDevice(){return physical_device;}
+    operator const VkPhysicalDevice()const{return physical_device;}
+
     const bool              CheckMemoryType(uint32_t,VkFlags,uint32_t *)const;
 
     VkPhysicalDeviceType    GetDeviceType()const{return properties.deviceType;}
@@ -35,8 +38,14 @@ public:
     const char *            GetDriverName   ()const{return driver_properties.driverName;}
     const char *            GetDriverInfo   ()const{return driver_properties.driverInfo;}
 
+public:
+
+    const uint32_t          GetConstantSize()const{return properties.limits.maxPushConstantsSize;}
+
+public:
+
     /**
-    * ��ȡ���豸�Ƿ����Կ�
+    * 获取该设备是否是显卡
     */
     const bool isGPU()const
     {
@@ -47,9 +56,9 @@ public:
         return(false);
     }
 
-    const bool isDiscreteGPU    ()const{return(properties.deviceType==VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU);}           ///<�Ƿ��Ƕ����Կ�
-    const bool isIntegratedGPU  ()const{return(properties.deviceType==VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU);}         ///<�Ƿ��Ǽ����Կ�
-    const bool isVirtualGPU     ()const{return(properties.deviceType==VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU);}            ///<�Ƿ��������Կ�
+    const bool isDiscreteGPU    ()const{return(properties.deviceType==VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU);}           ///<是否是独立显卡
+    const bool isIntegratedGPU  ()const{return(properties.deviceType==VK_PHYSICAL_DEVICE_TYPE_INTEGRATED_GPU);}         ///<是否是集成显卡
+    const bool isVirtualGPU     ()const{return(properties.deviceType==VK_PHYSICAL_DEVICE_TYPE_VIRTUAL_GPU);}            ///<是否是虚拟显卡
 
 public:
 
@@ -61,5 +70,5 @@ public:
 
         return fp;
     }
-};//struct PhysicalDevice
+};//class PhysicalDevice
 VK_NAMESPACE_END
\ No newline at end of file
diff --git a/src/RenderDevice/Vulkan/VKDeviceAttribute.cpp b/src/RenderDevice/Vulkan/VKDeviceAttribute.cpp
index 2a04635d..cdddfb15 100644
--- a/src/RenderDevice/Vulkan/VKDeviceAttribute.cpp
+++ b/src/RenderDevice/Vulkan/VKDeviceAttribute.cpp
@@ -11,7 +11,7 @@ DeviceAttribute::DeviceAttribute(VkInstance inst,const PhysicalDevice *pd,VkSurf
     physical_device=pd;
     surface=s;
 
-    VkPhysicalDevice pdevice=physical_device->physical_device;
+    VkPhysicalDevice pdevice=*physical_device;
 
     vkGetPhysicalDeviceSurfaceCapabilitiesKHR(pdevice,surface,&surface_caps);
 
diff --git a/src/RenderDevice/Vulkan/VKDeviceCreater.cpp b/src/RenderDevice/Vulkan/VKDeviceCreater.cpp
index 73601847..457b9084 100644
--- a/src/RenderDevice/Vulkan/VKDeviceCreater.cpp
+++ b/src/RenderDevice/Vulkan/VKDeviceCreater.cpp
@@ -546,7 +546,7 @@ Device *CreateRenderDevice(VkInstance inst,const PhysicalDevice *physical_device
     if(attr->graphics_family==ERROR_FAMILY_INDEX)
         return(nullptr);
 
-    attr->device=CreateDevice(inst,physical_device->physical_device,attr->graphics_family);
+    attr->device=CreateDevice(inst,*physical_device,attr->graphics_family);
 
     if(!attr->device)
         return(nullptr);