diff --git a/inc/hgl/graph/VKArrayBuffer.h b/inc/hgl/graph/VKArrayBuffer.h
index b89e29d7..690493ca 100644
--- a/inc/hgl/graph/VKArrayBuffer.h
+++ b/inc/hgl/graph/VKArrayBuffer.h
@@ -13,12 +13,15 @@ namespace hgl
         * GPU数据阵列缓冲区<br>
         * 它用于储存多份相同格式的数据，常用于多物件渲染，instance等
         */
-        template<typename T> class GPUArrayBuffer
+        class GPUArrayBuffer
         {
         protected:
 
             GPUDevice *device;
             VkBufferUsageFlags buffer_usage_flags;
+
+            uint item_length;                        ///<单个数据长度
+
             VKMemoryAllocator *vk_ma;
 
             uint32_t ubo_offset_alignment;
@@ -27,15 +30,16 @@ namespace hgl
 
         public:
         
-            GPUArrayBuffer(GPUDevice *dev,VkBufferUsageFlags flags)
+            GPUArrayBuffer(GPUDevice *dev,VkBufferUsageFlags flags,const uint il)
             {
                 device=dev;
                 buffer_usage_flags=flags;
+                item_length=il;
 
                 {
                     ubo_offset_alignment=device->GetUBOAlign();
 
-                    const uint32_t unit_size=hgl_align<uint32_t>(sizeof(T),ubo_offset_alignment);
+                    const uint32_t unit_size=hgl_align<uint32_t>(item_length,ubo_offset_alignment);
 
                     vk_ma=new VKMemoryAllocator(device,buffer_usage_flags,unit_size);     // construct function is going to set AllocUnitSize by minUniformOffsetAlignment
                     MemoryBlock *mb=new MemoryBlock(vk_ma);
@@ -77,9 +81,9 @@ namespace hgl
                 coll->Clear();
             }
 
-            T *Map(const uint32 start,const uint32 count)
+            void *Map(const uint32 start,const uint32 count)
             {
-                return (T *)(coll->Map(start,count));
+                return coll->Map(start,count);
             }
 
             void Flush(const uint32 count)