diff --git a/04-ComputerGraphics/Directx12/DirectX12学习笔记（0）——相关资料.md b/04-ComputerGraphics/Directx12/DirectX12学习笔记（0）——相关资料.md
index a3e52e1..a76c0bb 100644
--- a/04-ComputerGraphics/Directx12/DirectX12学习笔记（0）——相关资料.md
+++ b/04-ComputerGraphics/Directx12/DirectX12学习笔记（0）——相关资料.md
@@ -6,4 +6,5 @@ tags:
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 # 前言
-- [开篇：D3D12龙书指南](https://zhuanlan.zhihu.com/p/417016061)
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+- [开篇：D3D12龙书指南](https://zhuanlan.zhihu.com/p/417016061)
+- [d3dcoder/d3d12book: Sample code for the book "Introduction to 3D Game Programming with DirectX 12" ](http://github.com/d3dcoder/d3d12book)
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