diff --git a/03-UnrealEngine/Rendering/RenderingPipeline/Lighting/Lighting.md b/03-UnrealEngine/Rendering/RenderingPipeline/Lighting/Lighting.md
index 9679b82..a9479b1 100644
--- a/03-UnrealEngine/Rendering/RenderingPipeline/Lighting/Lighting.md
+++ b/03-UnrealEngine/Rendering/RenderingPipeline/Lighting/Lighting.md
@@ -631,7 +631,7 @@ FLightAccumulator AccumulateDynamicLighting(
 		BRANCH
 		if( Shadow.SurfaceShadow + Shadow.TransmissionShadow > 0 )
 		{
-			const bool bNeedsSeparateSubsurfaceLightAccumulation = UseSubsurfaceProfile(GBuffer.ShadingModelID);
+			const bool bNeedsSeparateSubsurfaceLightAccumulation = UseSubsurfaceProfile(GBuffer.ShadingModelID);//判断是否需要SubsurfaceProfile计算
 
 		#if NON_DIRECTIONAL_DIRECT_LIGHTING
 			float Lighting;