diff --git a/inc/hgl/graph/MaterialRenderList.h b/inc/hgl/graph/MaterialRenderList.h
index 1f4120d7..f1314af5 100644
--- a/inc/hgl/graph/MaterialRenderList.h
+++ b/inc/hgl/graph/MaterialRenderList.h
@@ -1,12 +1,12 @@
-#pragma once
+#pragma once
 #include<hgl/graph/RenderNode.h>
 #include<hgl/graph/VKVBOList.h>
 
 VK_NAMESPACE_BEGIN
-struct RenderExtraBuffer;
+struct RenderAssignBuffer;
 
 /**
-* ͬһ���ʵĶ�����Ⱦ�б�
+* 同一材质的对象渲染列表
 */
 class MaterialRenderList
 {
@@ -19,7 +19,7 @@ class MaterialRenderList
 
 private:
 
-    RenderExtraBuffer *extra_buffer;
+    RenderAssignBuffer *assign_buffer;
 
     struct RenderItem
     {
diff --git a/src/SceneGraph/CMakeLists.txt b/src/SceneGraph/CMakeLists.txt
index ae51b5f5..987b0d43 100644
--- a/src/SceneGraph/CMakeLists.txt
+++ b/src/SceneGraph/CMakeLists.txt
@@ -44,7 +44,7 @@ SET(SCENE_GRAPH_HEADER  ${SG_INCLUDE_PATH}/SceneInfo.h
 
 SET(SCENE_GRAPH_SOURCE  RenderList.cpp
                         MaterialRenderList.cpp
-                        RenderExtraBuffer.h
+                        RenderAssignBuffer.h
                         SceneNode.cpp
                         SceneOrient.cpp)
 
diff --git a/src/SceneGraph/MaterialRenderList.cpp b/src/SceneGraph/MaterialRenderList.cpp
index 28c4a319..b3973add 100644
--- a/src/SceneGraph/MaterialRenderList.cpp
+++ b/src/SceneGraph/MaterialRenderList.cpp
@@ -3,8 +3,9 @@
 #include<hgl/graph/VKDevice.h>
 #include<hgl/graph/VKCommandBuffer.h>
 #include<hgl/graph/VKVertexInput.h>
+#include<hgl/graph/mtl/UBOCommon.h>
 #include<hgl/util/sort/Sort.h>
-#include"RenderExtraBuffer.h"
+#include"RenderAssignBuffer.h"
 
 /**
 * 
@@ -60,7 +61,7 @@ MaterialRenderList::MaterialRenderList(GPUDevice *d,Material *m)
     device=d;
     cmd_buf=nullptr;
     mtl=m;
-    extra_buffer=nullptr;
+    assign_buffer=nullptr;
 
     vbo_list=new VBOList(mtl->GetVertexInput()->GetCount());
 }
@@ -68,7 +69,7 @@ MaterialRenderList::MaterialRenderList(GPUDevice *d,Material *m)
 MaterialRenderList::~MaterialRenderList()
 {
     SAFE_CLEAR(vbo_list);
-    SAFE_CLEAR(extra_buffer)
+    SAFE_CLEAR(assign_buffer)
 }
 
 void MaterialRenderList::Add(Renderable *ri,const Matrix4f &mat)
@@ -90,24 +91,24 @@ void MaterialRenderList::End()
 
     if(node_count<=0)return;
 
-    if(!extra_buffer)
-        extra_buffer=new RenderExtraBuffer;
+    if(!assign_buffer)
+        assign_buffer=new RenderAssignBuffer;
 
-    if(extra_buffer->node_count<node_count)
-        extra_buffer->NodeAlloc(device,node_count);
+    if(assign_buffer->node_count<node_count)
+        assign_buffer->NodeAlloc(device,node_count);
 
     Stat();
 
     //写入LocalToWorld数据
-    extra_buffer->WriteLocalToWorld(rn_list.GetData(),node_count);
+    assign_buffer->WriteLocalToWorld(rn_list.GetData(),node_count);
 
     const uint mi_count=mi_set.GetCount();
 
     if(mi_count<=0)return;
 
-    //if(extra_buffer->mi_count<mi_count)
-    //    extra_buffer->MIAlloc(device,mi_count,);
-    //extra_buffer->WriteMaterialInstance(rn_list.GetData(),node_count,mi_set);
+    //if(assign_buffer->mi_count<mi_count)
+    //    assign_buffer->MIAlloc(device,mi_count,);
+    //assign_buffer->WriteMaterialInstance(rn_list.GetData(),node_count,mi_set);
 }
 
 void MaterialRenderList::RenderItem::Set(Renderable *ri)
@@ -182,8 +183,8 @@ void MaterialRenderList::Bind(MaterialInstance *mi)
 
     if(assign_binding_count>0)
     {
-        mi->BindUBO(DescriptorSetType::PerFrame,"l2w",extra_buffer->assigns_l2w);
-//        mi->BindUBO(DescriptorSetType::PerFrame,"Assign",extra_buffer->assigns_mi);
+        mi->BindUBO(DescriptorSetType::PerFrame,mtl::SBS_LocalToWorld.name,assign_buffer->assigns_l2w);
+//        mi->BindUBO(DescriptorSetType::PerFrame,"Assign",assign_buffer->assigns_mi);
     }
 
     cmd_buf->BindDescriptorSets(mi->GetMaterial());
@@ -242,7 +243,7 @@ bool MaterialRenderList::Bind(const VertexInputData *vid,const uint ri_index)
     //        if(l2w_binding_count!=4)
     //            return(false);
 
-    //        hgl_cpy(buffer_list+count,extra_buffer->l2w_buffer,4);
+    //        hgl_cpy(buffer_list+count,assign_buffer->l2w_buffer,4);
 
     //        for(uint i=0;i<4;i++)
     //            buffer_offset[count+i]=ri_index*16;                        //mat4每列都是rgba32f，自然是16字节
@@ -260,7 +261,7 @@ bool MaterialRenderList::Bind(const VertexInputData *vid,const uint ri_index)
             if(assign_binding_count!=1)
                 return(false);
 
-            vbo_list->Add(extra_buffer->assigns_vbo->GetBuffer(),extra_buffer->assigns_vbo_strip*ri_index);
+            vbo_list->Add(assign_buffer->assigns_vbo->GetBuffer(),assign_buffer->assigns_vbo_strip*ri_index);
         }
     }
 
diff --git a/src/SceneGraph/RenderExtraBuffer.h b/src/SceneGraph/RenderAssignBuffer.h
similarity index 98%
rename from src/SceneGraph/RenderExtraBuffer.h
rename to src/SceneGraph/RenderAssignBuffer.h
index c3e34460..0d8caee3 100644
--- a/src/SceneGraph/RenderExtraBuffer.h
+++ b/src/SceneGraph/RenderAssignBuffer.h
@@ -24,7 +24,7 @@ VK_NAMESPACE_BEGIN
 /*
 * 渲染节点额外提供的数据
 */
-struct RenderExtraBuffer
+struct RenderAssignBuffer
 {
     uint node_count;                            ///<渲染节点数量
 //    uint mi_count;                              ///<材质实例数量
@@ -54,12 +54,12 @@ struct RenderExtraBuffer
 
 public:
 
-    RenderExtraBuffer()
+    RenderAssignBuffer()
     {
         hgl_zero(*this);
     }
 
-    ~RenderExtraBuffer()
+    ~RenderAssignBuffer()
     {
         Clear();
     }
@@ -205,5 +205,5 @@ public:
     //        //mi_data_buffer->Unmap();
     //    }
     //}
-};//struct RenderExtraBuffer
+};//struct RenderAssignBuffer
 VK_NAMESPACE_END