diff --git a/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp b/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp
index 57932461..95968186 100644
--- a/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp
+++ b/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp
@@ -26,7 +26,10 @@ bool GPUDevice::CreateBuffer(DeviceBufferData *buf,VkBufferUsageFlags buf_usage,
 
     vkGetBufferMemoryRequirements(attr->device,buf->buffer,&mem_reqs);
 
-    DeviceMemory *dm=CreateMemory(mem_reqs,VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT|VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
+    DeviceMemory *dm=CreateMemory(mem_reqs,  VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT        //CPU端可以Map
+                                            |VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);     //CPU端无需Flush,即可被GPU访问
+                                                                                        //注：这个模式并非最佳效能，但是在开发时最为方便
+                                                                                        //Device Local模式仅支持GPU访问，是性能最佳，考虑在一些极端情况下使用
 
     if(dm&&dm->BindBuffer(buf->buffer))
     {
@@ -38,7 +41,7 @@ bool GPUDevice::CreateBuffer(DeviceBufferData *buf,VkBufferUsageFlags buf_usage,
 
         if(!data)
             return(true);
-            
+
         dm->Write(data,0,size);
         return(true);
     }