diff --git a/inc/hgl/graph/RenderFramework.h b/inc/hgl/graph/RenderFramework.h
index bb00a10b..f34cafee 100644
--- a/inc/hgl/graph/RenderFramework.h
+++ b/inc/hgl/graph/RenderFramework.h
@@ -97,8 +97,8 @@ public:
     */
     virtual void Update(const double delta_time){}
 
-    virtual void BeginFrame(){};                                                                    ///<开始当前帧
-    virtual void EndFrame(){};                                                                      ///<当前帧结束
+    virtual void BeginFrame();                                                                      ///<开始当前帧
+    virtual void EndFrame();                                                                        ///<当前帧结束
 
     virtual void MainLoop();                                                                        ///<主循环
 
diff --git a/inc/hgl/graph/VKRenderTarget.h b/inc/hgl/graph/VKRenderTarget.h
index 9e1a21e7..a90119ee 100644
--- a/inc/hgl/graph/VKRenderTarget.h
+++ b/inc/hgl/graph/VKRenderTarget.h
@@ -8,6 +8,13 @@
 #include<hgl/graph/VKQueue.h>
 #include<hgl/graph/VKPipeline.h>
 VK_NAMESPACE_BEGIN
+
+工作：
+
+    1.RT支持多FBO,同交换链一样
+    2.RT内包含CommandBuffer
+
+
 /**
  * 渲染目标
  */
diff --git a/inc/hgl/graph/module/SwapchainModule.h b/inc/hgl/graph/module/SwapchainModule.h
index 4683c3ed..9ec32679 100644
--- a/inc/hgl/graph/module/SwapchainModule.h
+++ b/inc/hgl/graph/module/SwapchainModule.h
@@ -30,7 +30,9 @@ public:
     virtual ~SwapchainModule();
 
     bool Init() override;
-    void Swap();
+
+    bool BeginFrame();
+    void EndFrame();
 
 public:
 
diff --git a/src/SceneGraph/RenderFramework.cpp b/src/SceneGraph/RenderFramework.cpp
index f7cb4f14..a21fc8a2 100644
--- a/src/SceneGraph/RenderFramework.cpp
+++ b/src/SceneGraph/RenderFramework.cpp
@@ -31,13 +31,27 @@ RenderFramework::~RenderFramework()
 void RenderFramework::StartTime()
 {
     last_time=cur_time=GetDoubleTime();
-    frame_count++;
+}
+
+void RenderFramework::BeginFrame()
+{
+    cur_time=GetDoubleTime();
+
+    swapchain_module->BeginFrame();
+}
+
+void RenderFramework::EndFrame()
+{
+    swapchain_module->EndFrame();
+
+    device->WaitIdle();
+
+    last_time=cur_time;
+    ++frame_count;
 }
 
 void RenderFramework::MainLoop()
 {
-    cur_time=GetDoubleTime();
-
     const double delta_time=cur_time-last_time;
 
     for(auto rm:module_list)
@@ -61,10 +75,6 @@ void RenderFramework::MainLoop()
     }
 
     EndFrame();
-
-    swapchain_module->Swap();
-    last_time=cur_time;
-    ++frame_count;
 }
 
 bool RenderFramework::Init()
diff --git a/src/SceneGraph/module/SwapchainModule.cpp b/src/SceneGraph/module/SwapchainModule.cpp
index a75ed088..ab007177 100644
--- a/src/SceneGraph/module/SwapchainModule.cpp
+++ b/src/SceneGraph/module/SwapchainModule.cpp
@@ -235,14 +235,23 @@ void SwapchainModule::OnResize(const VkExtent2D &extent)
     CreateSwapchainRenderTarget();
 }
 
-void SwapchainModule::Swap()
+bool SwapchainModule::BeginFrame()
 {
     int index=swapchain_rt->AcquireNextImage();
 
     if(index<0||index>=swapchain->image_count)
-        return;
+        return(false);
 
-    
+    return(true);
+}
+
+void SwapchainModule::EndFrame()
+{
+    int index=swapchain_rt->GetCurrentFrameIndices();
+
+
+
+    swapchain_rt->Submit();
 }
 
 VK_NAMESPACE_END