diff --git a/inc/hgl/graph/module/SwapchainModule.h b/inc/hgl/graph/module/SwapchainModule.h
index e4e6d677..02d439d8 100644
--- a/inc/hgl/graph/module/SwapchainModule.h
+++ b/inc/hgl/graph/module/SwapchainModule.h
@@ -5,6 +5,7 @@
 VK_NAMESPACE_BEGIN
 
 class RenderTargetManager;
+class RenderPassManager;
 
 GRAPH_MODULE_CLASS(SwapchainModule)
 {
@@ -47,6 +48,6 @@ public:
 
             RenderCmdBuffer *Use();
 
-};//class SwapchainModule:public RenderModule
+};//class SwapchainModule:public GraphModule
 
 VK_NAMESPACE_END
diff --git a/src/SceneGraph/module/SwapchainModule.cpp b/src/SceneGraph/module/SwapchainModule.cpp
index 428e1eaf..7d706b07 100644
--- a/src/SceneGraph/module/SwapchainModule.cpp
+++ b/src/SceneGraph/module/SwapchainModule.cpp
@@ -290,6 +290,7 @@ RenderCmdBuffer *SwapchainModule::Use()
 
     RenderCmdBuffer *rcb=cmd_buf[index];
 
+    rcb->Begin();
     rcb->BindFramebuffer(swapchain_rp,swapchain_rt->GetFramebuffer());
 
     return rcb;