diff --git a/CMSceneGraph b/CMSceneGraph
index 4d15db4b..62a1367e 160000
--- a/CMSceneGraph
+++ b/CMSceneGraph
@@ -1 +1 @@
-Subproject commit 4d15db4b5c42a0fb8fc9d78703ab1e98e90d142d
+Subproject commit 62a1367e8b346bdcf107e8d586fb5b1f28cd0f04
diff --git a/example/2dVector/line.cpp b/example/2dVector/line.cpp
index 3b5e6178..6ca581de 100644
--- a/example/2dVector/line.cpp
+++ b/example/2dVector/line.cpp
@@ -37,9 +37,9 @@ private:
 
     MaterialInstance *  material_instance   =nullptr;
     RenderableInstance *render_instance     =nullptr;
-    GPUBuffer *            ubo_world_matrix    =nullptr;
-    GPUBuffer *            ubo_color_material  =nullptr;
-    GPUBuffer *            ubo_line_config     =nullptr;
+    GPUBuffer *         ubo_world_matrix    =nullptr;
+    GPUBuffer *         ubo_color_material  =nullptr;
+    GPUBuffer *         ubo_line_config     =nullptr;
 
     Pipeline *          pipeline            =nullptr;
 
@@ -53,7 +53,8 @@ private:
             return(false);
             
 //        pipeline=db->CreatePipeline(material_instance,sc_render_target,OS_TEXT("res/pipeline/solid2d"));
-        pipeline=CreatePipeline(material_instance,InlinePipeline::Alpha2D,Prim::LineStrip);     //等同上一行，为Framework重载，默认使用swapchain的render target
+        pipeline=CreatePipeline(material_instance,OS_TEXT("res/pipeline/alpha2d"),Prim::LineStrip);     //等同上一行，为Framework重载，默认使用swapchain的render target
+        //pipeline=CreatePipeline(material_instance,InlinePipeline::Alpha2D,Prim::LineStrip);     //等同上一行，为Framework重载，默认使用swapchain的render target
 
         if(!pipeline)
             return(false);
diff --git a/example/CMakeLists.txt b/example/CMakeLists.txt
index ee5381c8..c1e2bc19 100644
--- a/example/CMakeLists.txt
+++ b/example/CMakeLists.txt
@@ -2,3 +2,4 @@
 
 add_subdirectory(Vulkan)
 add_subdirectory(2dVector)
+add_subdirectory(GUI)
\ No newline at end of file
diff --git a/example/GUI/CMakeLists.txt b/example/GUI/CMakeLists.txt
index 8359de68..b244edfa 100644
--- a/example/GUI/CMakeLists.txt
+++ b/example/GUI/CMakeLists.txt
@@ -1,5 +1,5 @@
 macro(CreateProject name)
-    add_executable(${name} ${ARGN} VulkanAppFramework.h)
+    add_executable(${name} ${ARGN} GUIAppFramework.h)
     target_link_libraries(${name} ${ULRE})
 
     IF(WIN32)
diff --git a/example/GUI/GUIAppFramework.h b/example/GUI/GUIAppFramework.h
new file mode 100644
index 00000000..e69de29b
diff --git a/example/GUI/align_test.cpp b/example/GUI/align_test.cpp
new file mode 100644
index 00000000..e69de29b
diff --git a/example/Vulkan/DeferredModel.cpp b/example/Vulkan/DeferredModel.cpp
index eda80249..a9ff57de 100644
--- a/example/Vulkan/DeferredModel.cpp
+++ b/example/Vulkan/DeferredModel.cpp
@@ -337,7 +337,7 @@ public:
 
         VkCommandBuffer cb=*cmd_buf[index];
         
-        sc_render_target->Submit(cb,gbuffer_rt->GetCompleteSemaphore());
+        sc_render_target->Submit(cb,gbuffer_rt->GetRenderCompleteSemaphore());
         sc_render_target->PresentBackbuffer();
         sc_render_target->WaitQueue();
         sc_render_target->WaitFence();
diff --git a/inc/hgl/gui/Form.h b/inc/hgl/gui/Form.h
index 48461ea6..5e5c6e39 100644
--- a/inc/hgl/gui/Form.h
+++ b/inc/hgl/gui/Form.h
@@ -14,12 +14,14 @@ namespace hgl
          */
         class Form:public Widget
         {
-        protected:  //每个窗体独立一个FBO存在，所以每个窗体会有自己的RenderTarget与pipeline
+        protected:
 
         public:
 
             Form(ThemeEngine *te=nullptr):Widget(nullptr,te){}
             virtual ~Form()=default;
+
+
         };//class Form
     }//namespace gui
 }//namespace hgl
diff --git a/inc/hgl/gui/ThemeEngine.h b/inc/hgl/gui/ThemeEngine.h
index ecad81a9..f0d35d53 100644
--- a/inc/hgl/gui/ThemeEngine.h
+++ b/inc/hgl/gui/ThemeEngine.h
@@ -13,6 +13,8 @@ namespace hgl
             class GPUDevice;
         }//namespace vulkan
 
+        constexpr VkFormat DefaultRenderTargetFormat=UFMT_ABGR8;                ///<缺省窗体绘图表面格式
+
         class ThemeEngine
         {
         protected:
@@ -21,6 +23,12 @@ namespace hgl
 
             MapObject<Form *,ThemeForm> form_list;
 
+            RenderTarget *CreateRenderTarget(const uint32_t,const uint32_t,const VkFormat);
+
+        protected:
+
+            virtual bool ThemeRender(Form *)=0;
+
         public:
 
             ThemeEngine(GPUDevice *dev){device=dev;}
@@ -28,11 +36,11 @@ namespace hgl
 
             virtual bool Init()=0;
             virtual void Clear()=0;
-            
-            virtual bool Registry(Form *)=0;
-            virtual void Unregistry(Form *)=0;
-            virtual void Render(Form *)=0;
-            virtual bool Resize(Form *,const uint32_t,const uint32_t);
+
+            virtual bool Registry(Form *,const VkFormat format=DefaultRenderTargetFormat);
+            virtual void Unregistry(Form *);
+            virtual bool Resize(Form *,const uint32_t,const uint32_t,const VkFormat format=DefaultRenderTargetFormat);
+            virtual void Render(Form *);
         };//class ThemeEngine
 
 //        ThemeEngine *CreateThemeEngine();                   
diff --git a/inc/hgl/gui/ThemeForm.h b/inc/hgl/gui/ThemeForm.h
index 4909e3e0..7b2cd6ac 100644
--- a/inc/hgl/gui/ThemeForm.h
+++ b/inc/hgl/gui/ThemeForm.h
@@ -8,18 +8,26 @@ namespace hgl
 {
     namespace gui
     {
+        using namespace hgl::graph;
+
         class ThemeForm
         {
         protected:
         
             Form *form;
-            hgl::graph::RenderTarget *render_target;
+            RenderTarget *render_target;
 
         public:
 
-            ThemeForm(Form *);
+            ThemeForm(Form *,RenderTarget *);
+            virtual ~ThemeForm();
+
+            RenderTarget *  GetRenderTarget(){return render_target;}
+            bool            SetRenderTarget(RenderTarget *);
+
+            void            Resize(uint w,uint h);
+
 
-            void SetRenderTarget(hgl::graph::RenderTarget *);
         };//class ThemeForm
     }//namespace gui
 }//namespace hgl
diff --git a/inc/hgl/gui/Widget.h b/inc/hgl/gui/Widget.h
index 443d6014..bd9a7c38 100644
--- a/inc/hgl/gui/Widget.h
+++ b/inc/hgl/gui/Widget.h
@@ -52,12 +52,14 @@ namespace hgl
             void                SetPosition (const RectScope2i &);
             void                SetSize     (const Vector2f &);
 
+        public: //事件
+
+            virtual void OnResize(uint,uint);
+
         public:
 
             Widget(Widget *parent=nullptr,ThemeEngine *te=nullptr);
             virtual ~Widget()=default;
-
-            virtual void Draw(){}
         };//class Widget
     }//namespace gui
 }//namespace hgl
diff --git a/src/GUI/DTForm.h b/src/GUI/DTForm.h
index e3a2abb1..65805d8c 100644
--- a/src/GUI/DTForm.h
+++ b/src/GUI/DTForm.h
@@ -3,12 +3,13 @@
 
 #include<hgl/gui/ThemeForm.h>
 #include<hgl/graph/VK.h>
-using namespace hgl::graph;
 
 namespace hgl
 {    
     namespace gui
     {
+        using namespace hgl::graph;
+
         class Form;
 
         namespace default_theme
@@ -18,10 +19,10 @@ namespace hgl
 
             public:
 
-                DTForm(Form *f):ThemeForm(f){}
+                using ThemeForm::ThemeForm;
                 ~DTForm()=default;
             };//class DTForm
         }//namespace default_theme
     }//namespace gui
 }//namespace hgl
-#endif//HGL_GUI_DEFAULT_THEME_FORM_INCLUDE
\ No newline at end of file
+#endif//HGL_GUI_DEFAULT_THEME_FORM_INCLUDE
diff --git a/src/GUI/DefaultThemeEngine.h b/src/GUI/DefaultThemeEngine.h
index 0070c8f2..81567599 100644
--- a/src/GUI/DefaultThemeEngine.h
+++ b/src/GUI/DefaultThemeEngine.h
@@ -34,11 +34,8 @@ namespace hgl
 
                 bool Init() override;
                 void Clear() override;
-
-                bool Registry(Form *) override;
-                void Unregistry(Form *) override;
-                void Render(Form *) override;
-                bool Resize(Form *,const uint32_t,const uint32_t) override;
+                
+                bool ThemeRender(Form *) override;
             };//class DefaultThemeEngine:public ThemeEngine
         }//namespace default_theme
     }//namespace gui
diff --git a/src/GUI/ThemeEngine.cpp b/src/GUI/ThemeEngine.cpp
index b0a7eb60..d5fb4c45 100644
--- a/src/GUI/ThemeEngine.cpp
+++ b/src/GUI/ThemeEngine.cpp
@@ -1,5 +1,7 @@
 #include<hgl/gui/ThemeEngine.h>
 #include<hgl/gui/ThemeForm.h>
+#include<hgl/graph/VKRenderTarget.h>
+#include<hgl/graph/VKDevice.h>
 
 namespace hgl
 {
@@ -24,8 +26,48 @@ namespace hgl
         {
             return GetDefaultThemeEngine();
         }
-            
-        bool ThemeEngine::Resize(Form *f,const uint32_t w,const uint32_t h)
+
+        RenderTarget *ThemeEngine::CreateRenderTarget(const uint32_t w,const uint32_t h,const VkFormat format)
+        {
+            const uint width=power_to_2(w);
+            const uint height=power_to_2(h);
+
+            return device->CreateColorRenderTarget(width,height,format);
+        }
+        
+        bool ThemeEngine::Registry(Form *f,const VkFormat format)
+        {
+            if(!f)return(false);
+
+            if(form_list.KeyExist(f))
+                return(false);
+
+            Vector2f size=f->GetSize();
+
+            RenderTarget *rt=CreateRenderTarget(size.x,size.y,format);
+
+            if(!rt)return(false);
+
+            ThemeForm *tf=new ThemeForm(f,rt);
+
+            form_list.Add(f,tf);
+
+            return(true);
+        }
+
+        void ThemeEngine::Unregistry(Form *f)
+        {
+            if(!f)return;
+
+            ThemeForm *tf;
+
+            if(!form_list.Get(f,tf))
+                return;
+
+            delete tf;
+        }
+
+        bool ThemeEngine::Resize(Form *f,const uint32_t w,const uint32_t h,const VkFormat format)
         {
             if(!f)return(false);
 
@@ -39,6 +81,34 @@ namespace hgl
                 return(true);
             }
 
+            RenderTarget *old_rt=tf->GetRenderTarget();
+
+            if(!old_rt)
+            {
+                const VkExtent2D old_size=old_rt->GetExtent();
+
+                if(old_size.width>=w
+                 &&old_size.height>=h)
+                {
+                    tf->Resize(w,h);
+                    return(true);
+                }
+            }
+                
+            graph::RenderTarget *rt=CreateRenderTarget(w,h,format);
+
+            if(!rt)return(false);
+
+            tf->SetRenderTarget(rt);
+            tf->Resize(w,h);
+            return(true);
+        }
+
+        void ThemeEngine::Render(Form *f)
+        {
+            if(!f)return;
+
+            
         }
     }//namespace gui
 }//namespace hgl
\ No newline at end of file
diff --git a/src/GUI/ThemeForm.cpp b/src/GUI/ThemeForm.cpp
index fc77fc0b..b8da9a08 100644
--- a/src/GUI/ThemeForm.cpp
+++ b/src/GUI/ThemeForm.cpp
@@ -4,9 +4,30 @@ namespace hgl
 {
     namespace gui
     {
-        namespace
+        ThemeForm::ThemeForm(Form *f,RenderTarget *rt)
         {
-            constexpr VkFormat FORM_RT_PIXEL_FORMAT=UFMT_RGBA8;
-        }//namespace
+            form=f;
+            render_target=rt;                
+        }
+        
+        ThemeForm::~ThemeForm()
+        {
+        }
+
+        bool ThemeForm::SetRenderTarget(RenderTarget *rt)
+        {
+            SAFE_CLEAR(render_target);
+
+            if(!rt)
+                return(true);
+
+            render_target=rt;
+            return(true);
+        }
+
+        void ThemeForm::Resize(uint w,uint h)
+        {
+            form->OnResize(w,h);
+        }
     }//namespace gui
-}//namespace hgl
\ No newline at end of file
+}//namespace hgl
diff --git a/src/GUI/Widget.cpp b/src/GUI/Widget.cpp
index b8186039..39d8423d 100644
--- a/src/GUI/Widget.cpp
+++ b/src/GUI/Widget.cpp
@@ -20,5 +20,9 @@ namespace hgl
             align_bits=0;       //不对齐
             position.Clear();
         }
+
+        void Widget::OnResize(const uint,const uint)
+        {
+        }
     }//namespace gui
 }//namespace hgl
\ No newline at end of file