diff --git a/inc/hgl/graph/VKPrimitive.h b/inc/hgl/graph/VKPrimitive.h
index be712357..6d72fda8 100644
--- a/inc/hgl/graph/VKPrimitive.h
+++ b/inc/hgl/graph/VKPrimitive.h
@@ -6,6 +6,7 @@
 #include<hgl/type/String.h>
 #include<hgl/math/Math.h>
 #include<hgl/graph/AABB.h>
+#include<hgl/graph/VKVertexAttribBuffer.h>
 VK_NAMESPACE_BEGIN
 /**
  * 单一图元数据
@@ -60,7 +61,7 @@ public:
 
     const   uint32_t            GetVertexCount      ()const {return vertex_count;}
 
-            VBO *               GetVBO              (const AnsiString &,VkDeviceSize *);
+            bool                GetVBOAccessData    (const AnsiString &,VBOAccessData *);
     const   int                 GetBufferCount      ()const {return buffer_list.GetCount();}
 
     const   IndexBufferData *   GetIndexBufferData  ()const {return &index_buffer_data;}
diff --git a/src/SceneGraph/Vulkan/VKPrimitive.cpp b/src/SceneGraph/Vulkan/VKPrimitive.cpp
index 3910ef31..0b58aad8 100644
--- a/src/SceneGraph/Vulkan/VKPrimitive.cpp
+++ b/src/SceneGraph/Vulkan/VKPrimitive.cpp
@@ -32,12 +32,13 @@ bool Primitive::Set(const AnsiString &name,VBO *vbo,VkDeviceSize offset)
     if(!vbo)return(false);
     if(buffer_list.KeyExist(name))return(false);
 
-    VBOAccessData bd;
-    
-    bd.buf=vbo;
-    bd.offset=offset;
+    VBOAccessData vad;
 
-    buffer_list.Add(name,bd);
+    vad.vbo=vbo;
+    vad.offset=offset;
+    vad.size=vbo->GetBytes();
+
+    buffer_list.Add(name,vad);
 
 #ifdef _DEBUG
     DebugUtils *du=device->GetDebugUtils();
@@ -52,20 +53,12 @@ bool Primitive::Set(const AnsiString &name,VBO *vbo,VkDeviceSize offset)
     return(true);
 }
 
-VBO *Primitive::GetVBO(const AnsiString &name,VkDeviceSize *offset)
+bool Primitive::GetVBOAccessData(const AnsiString &name,VBOAccessData *vad)
 {
-    if(!offset)return(nullptr);
-    if(name.IsEmpty())return(nullptr);
+    if(name.IsEmpty())return(false);
+    if(!vad)return(false);
 
-    VBOAccessData bd;
-
-    if(buffer_list.Get(name,bd))
-    {
-        *offset=bd.offset;
-        return bd.buf;
-    }
-
-    return(nullptr);
+    return buffer_list.Get(name,*vad);
 }
 
 bool Primitive::Set(IndexBuffer *ib,VkDeviceSize offset)