From c2082925c703c8dafe16bf663e4b222e4902a16f Mon Sep 17 00:00:00 2001
From: Wojciech Figat <wojtek@figat.pl>
Date: Thu, 26 May 2022 15:09:37 +0200
Subject: [PATCH] Improve multi-bounce irradiance lighting by limiting the
 diffuse color intensity

---
 Source/Shaders/GI/GlobalSurfaceAtlas.shader | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Source/Shaders/GI/GlobalSurfaceAtlas.shader b/Source/Shaders/GI/GlobalSurfaceAtlas.shader
index 83707ac38..c917583d7 100644
--- a/Source/Shaders/GI/GlobalSurfaceAtlas.shader
+++ b/Source/Shaders/GI/GlobalSurfaceAtlas.shader
@@ -120,6 +120,7 @@ float4 PS_Lighting(AtlasVertexOutput input) : SV_Target
 
     // Calculate lighting
     float3 diffuseColor = GetDiffuseColor(gBuffer);
+    diffuseColor = min(diffuseColor, 0.9f); // Nothing reflects diffuse like perfectly in the real world (ensure to have energy loss at each light bounce)
     float3 diffuse = Diffuse_Lambert(diffuseColor);
     float4 light = float4(diffuse * irradiance, 1);
 #else