diff --git a/example/Vulkan/VKDevice.cpp b/example/Vulkan/VKDevice.cpp
index 2f3ea391..f0b6d6c7 100644
--- a/example/Vulkan/VKDevice.cpp
+++ b/example/Vulkan/VKDevice.cpp
@@ -129,21 +129,6 @@ CommandBuffer *Device::CreateCommandBuffer()
     return(new CommandBuffer(attr->device,attr->cmd_pool,cmd_buf));
 }
 
-//DescriptorSet *Device::CreateDescSet(int count)
-//{
-//    VkDescriptorSetAllocateInfo alloc_info[1];
-//    alloc_info[0].sType=VK_STRUCTURE_TYPE_DESCRIPTOR_SET_ALLOCATE_INFO;
-//    alloc_info[0].pNext=nullptr;
-//    alloc_info[0].descriptorPool=rsa->desc_pool;
-//    alloc_info[0].descriptorSetCount=count;
-//    alloc_info[0].pSetLayouts=desc_layout.data();
-//
-//    VkDescriptorSet desc_set;
-//    
-//    desc_set.resize(count);
-//    res=vkAllocateDescriptorSets(info.device,alloc_info,info.desc_set.data());
-//}
-
 RenderPass *Device::CreateRenderPass()
 {
     VkAttachmentDescription attachments[2];
diff --git a/example/Vulkan/VKDevice.h b/example/Vulkan/VKDevice.h
index 61cf64cc..ee4a3efa 100644
--- a/example/Vulkan/VKDevice.h
+++ b/example/Vulkan/VKDevice.h
@@ -60,23 +60,15 @@ public:
 
 #undef CREATE_BUFFER_OBJECT
 
-    CommandBuffer *     CreateCommandBuffer ();
+    CommandBuffer * CreateCommandBuffer();
+    RenderPass *    CreateRenderPass();
+    Fence *         CreateFence();
+    Semaphore *     CreateSem();
 
-//    DescriptorSet *     CreateDescSet(int);
-
-    RenderPass *CreateRenderPass();
-
-    Fence *CreateFence();
-
-    Semaphore *CreateSem();
-
-    bool AcquireNextImage();
-
-    bool QueueSubmit(CommandBuffer *,Fence *);
-
-    bool Wait(Fence *,bool wait_all=VK_TRUE,uint64_t time_out=HGL_NANO_SEC_PER_SEC*0.1);
-
-    bool QueuePresent();
+    bool AcquireNextImage   ();
+    bool QueueSubmit        (CommandBuffer *,Fence *);
+    bool Wait               (Fence *,bool wait_all=VK_TRUE,uint64_t time_out=HGL_NANO_SEC_PER_SEC*0.1);
+    bool QueuePresent       ();
 };//class Device
 VK_NAMESPACE_END
 #endif//HGL_GRAPH_RENDER_SURFACE_INCLUDE