moved codes to stalone files, they're VKIndexBuffer.h and VKVertexAttribBuffer.h

inc/hgl/graph/VKIndexBuffer.h

@@ -0,0 +1,34 @@
+#ifndef HGL_GRAPH_VULKAN_INDEX_BUFFER_INCLUDE
+#define HGL_GRAPH_VULKAN_INDEX_BUFFER_INCLUDE
+
+#include<hgl/graph/VKBuffer.h>
+
+namespace hgl
+{
+    namespace graph
+    {
+        class IndexBuffer:public GPUBuffer
+        {
+            IndexType index_type;
+            uint32_t count;
+
+        private:
+
+            friend class GPUDevice;
+
+            IndexBuffer(VkDevice d,const GPUBufferData &vb,IndexType it,uint32_t _count):GPUBuffer(d,vb)
+            {
+                index_type=it;
+                count=_count;
+            }
+
+        public:
+
+            ~IndexBuffer()=default;
+
+            const IndexType GetType ()const{return index_type;}
+            const uint32    GetCount()const{return count;}
+        };//class IndexBuffer:public GPUBuffer
+    }//namespace graph
+}//namespace hgl
+#endif//HGL_GRAPH_VULKAN_INDEX_BUFFER_INCLUDE