diff --git a/03-UnrealEngine/卡通渲染相关资料/卡通渲染开发总览.md b/03-UnrealEngine/卡通渲染相关资料/卡通渲染开发总览.md
index 6799ece..be0a886 100644
--- a/03-UnrealEngine/卡通渲染相关资料/卡通渲染开发总览.md
+++ b/03-UnrealEngine/卡通渲染相关资料/卡通渲染开发总览.md
@@ -93,6 +93,8 @@ rating: ⭐⭐⭐
 	4. [ ] BackFaceOutline
 		1. [ ] https://zhuanlan.zhihu.com/p/613772622
 		2. [ ] https://zhuanlan.zhihu.com/p/552283835
+		3. [ ] 另一种思路定点内扩+Stencil的方式渲染内描边？
+	5. [ ] TODO：RayTacing描边方法。
 7. [ ] ToonPostProcess
 	1. [ ] ToonBloom
 	2. [ ] 实现一波Anti-Lut