diff --git a/libs/gfx/include/psemek/gfx/buffer.hpp b/libs/gfx/include/psemek/gfx/buffer.hpp
index 5da857e0..e13d5fc5 100644
--- a/libs/gfx/include/psemek/gfx/buffer.hpp
+++ b/libs/gfx/include/psemek/gfx/buffer.hpp
@@ -106,6 +106,42 @@ namespace psemek::gfx
 			load(data.data(), data.size(), usage);
 		}
 
+		void load_subdata(std::size_t offset, void const * data, std::size_t size)
+		{
+			bind();
+			gl::BufferSubData(Target, offset, size, data);
+		}
+
+		template <typename T>
+		void load_subdata(std::size_t offset, T const * data, std::size_t size)
+		{
+			load_subdata(offset * sizeof(T), static_cast<void const *>(data), size * sizeof(T));
+		}
+
+		template <typename T>
+		void load_subdata(std::size_t offset, std::vector<T> const & data)
+		{
+			load_subdata(offset, data.data(), data.size());
+		}
+
+		template <typename T, std::size_t N>
+		void load_subdata(std::size_t offset, std::array<T, N> const & data)
+		{
+			load_subdata(offset, data.data(), data.size());
+		}
+
+		template <typename T, std::size_t N>
+		void load_subdata(std::size_t offset, T const (&data)[N])
+		{
+			load_subdata(offset, data, N);
+		}
+
+		template <typename T>
+		void load_subdata(std::size_t offset, util::span<T> const & data)
+		{
+			load_subdata(offset, data.data(), data.size());
+		}
+
 		template <typename T>
 		std::shared_ptr<T[]> map()
 		{