diff --git a/example/common/VulkanAppFramework.h b/example/common/VulkanAppFramework.h
index 2ec0ac8e..6111d34c 100644
--- a/example/common/VulkanAppFramework.h
+++ b/example/common/VulkanAppFramework.h
@@ -226,8 +226,8 @@ public:
                 cb->BindDescriptorSets(ri->GetMaterial());
                 cb->BindVBO(ri);
 
-                    if (vid->index_buffer->buffer)
-                        cb->DrawIndexed(vid->index_buffer->buffer->GetCount());
+                    if (vid->ib_access->buffer)
+                        cb->DrawIndexed(vid->ib_access->buffer->GetCount());
                     else
                         cb->Draw(vid->vertex_count);
 
diff --git a/inc/hgl/graph/RenderNode.h b/inc/hgl/graph/RenderNode.h
index f9241757..02297eb4 100644
--- a/inc/hgl/graph/RenderNode.h
+++ b/inc/hgl/graph/RenderNode.h
@@ -12,7 +12,7 @@ namespace hgl
         class MaterialInstance;
         class GPUDevice;
         struct VertexInputData;
-        struct IndexBufferData;
+        struct IndexBufferAccess;
 
         struct RenderNode
         {
diff --git a/inc/hgl/graph/VK.h b/inc/hgl/graph/VK.h
index c77673da..e628a6de 100644
--- a/inc/hgl/graph/VK.h
+++ b/inc/hgl/graph/VK.h
@@ -59,7 +59,7 @@ using VAB=VertexAttribBuffer;
 
 class IndexBuffer;
 
-struct IndexBufferData
+struct IndexBufferAccess
 {
     IndexBuffer *buffer=nullptr;
     VkDeviceSize offset=0;
diff --git a/inc/hgl/graph/VKCommandBuffer.h b/inc/hgl/graph/VKCommandBuffer.h
index 4cd346e8..10e20071 100644
--- a/inc/hgl/graph/VKCommandBuffer.h
+++ b/inc/hgl/graph/VKCommandBuffer.h
@@ -170,7 +170,7 @@ public:
         return(true);
     }
 
-    void BindIBO(const IndexBufferData *);
+    void BindIBO(const IndexBufferAccess *);
 
     bool BindVBO(Renderable *);
 
diff --git a/inc/hgl/graph/VKPrimitive.h b/inc/hgl/graph/VKPrimitive.h
index 40297b36..3c5041e1 100644
--- a/inc/hgl/graph/VKPrimitive.h
+++ b/inc/hgl/graph/VKPrimitive.h
@@ -14,12 +14,10 @@ struct PrimitiveData
     uint32_t vertex_count;
 
     uint32_t va_count;
-
-
     
     VABAccess *vab_list;
 
-    IndexBufferData index_buffer_data;
+    IndexBufferAccess ib_access;
 
     AABB BoundingBox;
 };
@@ -38,7 +36,7 @@ protected:
 
     VABAccessMap buffer_list;
 
-    IndexBufferData index_buffer_data;
+    IndexBufferAccess ib_access;
 
     AABB BoundingBox;
 
@@ -78,7 +76,7 @@ public:
             bool                GetVABAccess        (const AnsiString &,VABAccess *);
     const   int                 GetBufferCount      ()const {return buffer_list.GetCount();}
 
-    const   IndexBufferData *   GetIndexBufferData  ()const {return &index_buffer_data;}
+    const   IndexBufferAccess * GetIndexBufferAccess()const {return &ib_access;}
 };//class Primitive
 VK_NAMESPACE_END
 #endif//HGL_GRAPH_VULKAN_PRIMITIVE_INCLUDE
diff --git a/inc/hgl/graph/VKRenderable.h b/inc/hgl/graph/VKRenderable.h
index d7bdd6eb..461e2fa4 100644
--- a/inc/hgl/graph/VKRenderable.h
+++ b/inc/hgl/graph/VKRenderable.h
@@ -17,11 +17,11 @@ struct VertexInputData
 
     uint32_t vertex_count;
 
-    const IndexBufferData *index_buffer;
+    const IndexBufferAccess *ib_access;
 
 public:
 
-    VertexInputData(const uint32_t,const uint32_t,const IndexBufferData *);
+    VertexInputData(const uint32_t,const uint32_t,const IndexBufferAccess *);
     ~VertexInputData();
 
     const bool Comp(const VertexInputData *vid)const
@@ -38,7 +38,7 @@ public:
 
         if(vertex_count!=vid->vertex_count)return(false);
 
-        if(index_buffer!=vid->index_buffer)return(false);
+        if(ib_access!=vid->ib_access)return(false);
 
         return(true);
     }
diff --git a/inc/hgl/graph/VKRenderablePrimitiveCreater.h b/inc/hgl/graph/VKRenderablePrimitiveCreater.h
index d3d41e05..bf584117 100644
--- a/inc/hgl/graph/VKRenderablePrimitiveCreater.h
+++ b/inc/hgl/graph/VKRenderablePrimitiveCreater.h
@@ -1,9 +1,12 @@
-#ifndef HGL_VK_RENDERABLE_PRIMITIVE_CREATER_INCLUDE
+#ifndef HGL_VK_RENDERABLE_PRIMITIVE_CREATER_INCLUDE
 #define HGL_VK_RENDERABLE_PRIMITIVE_CREATER_INCLUDE
 
 #include<hgl/graph/VKRenderResource.h>
 
 VK_NAMESPACE_BEGIN
+/**
+* 可绘制图元创建器
+*/
 class RenderablePrimitiveCreater
 {
     RenderResource *rr;
@@ -50,4 +53,4 @@ public:
     }
 };//class RenderablePrimitiveCreater
 VK_NAMESPACE_END
-#endif // HGL_VK_RENDERABLE_PRIMITIVE_CREATER_INCLUDE
\ No newline at end of file
+#endif // HGL_VK_RENDERABLE_PRIMITIVE_CREATER_INCLUDE
diff --git a/src/SceneGraph/MaterialRenderList.cpp b/src/SceneGraph/MaterialRenderList.cpp
index d86293f5..c6a79d3a 100644
--- a/src/SceneGraph/MaterialRenderList.cpp
+++ b/src/SceneGraph/MaterialRenderList.cpp
@@ -256,7 +256,7 @@ void MaterialRenderList::Render(RenderItem *ri)
         last_vid=ri->vid;
     }
 
-    const IndexBufferData *ibd=last_vid->index_buffer;
+    const IndexBufferAccess *ibd=last_vid->ib_access;
 
     if(ibd->buffer)
     {
diff --git a/src/SceneGraph/Vulkan/VKCommandBufferRender.cpp b/src/SceneGraph/Vulkan/VKCommandBufferRender.cpp
index ee823705..2a712a3b 100644
--- a/src/SceneGraph/Vulkan/VKCommandBufferRender.cpp
+++ b/src/SceneGraph/Vulkan/VKCommandBufferRender.cpp
@@ -129,7 +129,7 @@ bool RenderCmdBuffer::BindDescriptorSets(Material *mtl)
     return(true);
 }
 
-void RenderCmdBuffer::BindIBO(const IndexBufferData *ibd)
+void RenderCmdBuffer::BindIBO(const IndexBufferAccess *ibd)
 {
     vkCmdBindIndexBuffer(   cmd_buf,
                             ibd->buffer->GetBuffer(),
@@ -149,10 +149,13 @@ bool RenderCmdBuffer::BindVBO(Renderable *ri)
 
     vkCmdBindVertexBuffers(cmd_buf,0,vid->binding_count,vid->buffer_list,vid->buffer_offset);
 
-    IndexBuffer *indices_buffer=vid->index_buffer->buffer;
+    IndexBuffer *indices_buffer=vid->ib_access->buffer;
 
     if(indices_buffer)
-        vkCmdBindIndexBuffer(cmd_buf,indices_buffer->GetBuffer(),vid->index_buffer->offset,VkIndexType(indices_buffer->GetType()));
+        vkCmdBindIndexBuffer(cmd_buf,
+                             indices_buffer->GetBuffer(),
+                             vid->ib_access->offset,
+                             VkIndexType(indices_buffer->GetType()));
 
     return(true);
 }
diff --git a/src/SceneGraph/Vulkan/VKPrimitive.cpp b/src/SceneGraph/Vulkan/VKPrimitive.cpp
index fa465b4a..c9a5516e 100644
--- a/src/SceneGraph/Vulkan/VKPrimitive.cpp
+++ b/src/SceneGraph/Vulkan/VKPrimitive.cpp
@@ -65,8 +65,8 @@ bool Primitive::Set(IndexBuffer *ib,VkDeviceSize offset)
 {
     if(!ib)return(false);
 
-    index_buffer_data.buffer=ib;
-    index_buffer_data.offset=offset;
+    ib_access.buffer=ib;
+    ib_access.offset=offset;
 
 #ifdef _DEBUG
     DebugUtils *du=device->GetDebugUtils();
diff --git a/src/SceneGraph/Vulkan/VKRenderable.cpp b/src/SceneGraph/Vulkan/VKRenderable.cpp
index 65740df3..6dfa6f76 100644
--- a/src/SceneGraph/Vulkan/VKRenderable.cpp
+++ b/src/SceneGraph/Vulkan/VKRenderable.cpp
@@ -6,7 +6,7 @@
 #include<hgl/log/LogInfo.h>
 
 VK_NAMESPACE_BEGIN
-VertexInputData::VertexInputData(const uint32_t c,const uint32_t vc,const IndexBufferData *ibd)
+VertexInputData::VertexInputData(const uint32_t c,const uint32_t vc,const IndexBufferAccess *iba)
 {
     binding_count=c;
 
@@ -15,7 +15,7 @@ VertexInputData::VertexInputData(const uint32_t c,const uint32_t vc,const IndexB
 
     vertex_count=vc;
 
-    index_buffer=ibd;
+    ib_access=iba;
 }
 
 VertexInputData::~VertexInputData()
@@ -57,7 +57,7 @@ Renderable *CreateRenderable(Primitive *prim,MaterialInstance *mi,Pipeline *p)
 
     VAB *vab;
 
-    VertexInputData *vid=new VertexInputData(input_count,prim->GetVertexCount(),prim->GetIndexBufferData());
+    VertexInputData *vid=new VertexInputData(input_count,prim->GetVertexCount(),prim->GetIndexBufferAccess());
 
     const VertexInputFormat *vif=vil->GetVIFList(VertexInputGroup::Basic);
     VABAccess vad;