diff --git a/inc/hgl/graph/VK.h b/inc/hgl/graph/VK.h
index 53afd9bc..16880ae9 100644
--- a/inc/hgl/graph/VK.h
+++ b/inc/hgl/graph/VK.h
@@ -58,6 +58,12 @@ using VBO=VertexAttribBuffer;
 
 class IndexBuffer;
 
+struct IndexBufferData
+{
+    IndexBuffer *buffer=nullptr;
+    VkDeviceSize offset=0;
+};
+
 class GPUCmdBuffer;
 class RenderCmdBuffer;
 class TextureCmdBuffer;
diff --git a/inc/hgl/graph/VKPrimitive.h b/inc/hgl/graph/VKPrimitive.h
index 2b09d6e2..7161de5e 100644
--- a/inc/hgl/graph/VKPrimitive.h
+++ b/inc/hgl/graph/VKPrimitive.h
@@ -7,12 +7,6 @@
 #include<hgl/math/Math.h>
 #include<hgl/graph/AABB.h>
 VK_NAMESPACE_BEGIN
-struct IndexBufferData
-{
-    IndexBuffer *buffer;
-    VkDeviceSize offset;
-};
-
 /**
  * 单一图元数据
  */
@@ -78,7 +72,7 @@ public:
             VkBuffer            GetBuffer           (const AnsiString &,VkDeviceSize *);
     const   int                 GetBufferCount      ()const {return buffer_list.GetCount();}
 
-    const   IndexBufferData *   GetIndexBuffer      ()const {return &index_buffer_data;}
+    const   IndexBufferData *   GetIndexBufferData  ()const {return &index_buffer_data;}
 };//class Primitive
 VK_NAMESPACE_END
 #endif//HGL_GRAPH_VULKAN_PRIMITIVE_INCLUDE
diff --git a/src/SceneGraph/Vulkan/VKRenderable.cpp b/src/SceneGraph/Vulkan/VKRenderable.cpp
index 188c4021..81318ca5 100644
--- a/src/SceneGraph/Vulkan/VKRenderable.cpp
+++ b/src/SceneGraph/Vulkan/VKRenderable.cpp
@@ -56,7 +56,7 @@ Renderable *CreateRenderable(Primitive *prim,MaterialInstance *mi,Pipeline *p)
 
     VBO *vbo;
 
-    VertexInputData *vid=new VertexInputData(input_count,prim->GetVertexCount(),prim->GetIndexBuffer());
+    VertexInputData *vid=new VertexInputData(input_count,prim->GetVertexCount(),prim->GetIndexBufferData());
 
     const VertexInputFormat *vif=vil->GetFormatList(VertexInputGroup::Basic);