diff --git a/03-UnrealEngine/Rendering/Debug/UE5RayTracing篇-1-——NSight-Graphics.md b/03-UnrealEngine/Rendering/Debug/UE5RayTracing篇-1-——NSight-Graphics.md
index 94f8041..9451431 100644
--- a/03-UnrealEngine/Rendering/Debug/UE5RayTracing篇-1-——NSight-Graphics.md
+++ b/03-UnrealEngine/Rendering/Debug/UE5RayTracing篇-1-——NSight-Graphics.md
@@ -131,4 +131,12 @@ APIInspector的Rt Shader会显示额外所需的HitTable等数据：
 - 鼠标左键 + 鼠标右键 + Drag — 跟踪相机（上、下、左、右）
 - ALT + 鼠标左键 + 拖动- 围绕选定几何体旋转相机
 - ALT + 鼠标右键 + 拖动- 放大/缩小
-- 双击或 F - 将相机聚焦在选定的几何体上
\ No newline at end of file
+- 双击或 F - 将相机聚焦在选定的几何体上
+
+# UE查看Shader代码
+想要看源代码需要开启：
+r.Shaders.Optimize=0
+; When this is enabled, shaders will have extra debugging info. This could change patch sizes, uniqueness, etc and will recompile the shaders
+r.Shaders.Symbols=1
+; When this is enabled, ShaderName field of FRHIShader will be populated (Development and Debug builds only)
+r.Shaders.ExtraData=1