From a08954f7db0b9102d23a2191b86ad04190cf95db Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Sun, 2 Jun 2024 22:38:46 +0200
Subject: [PATCH] Fix CSM shadows intensity due to sharpness trick

---
 Source/Shaders/ShadowsSampling.hlsl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Source/Shaders/ShadowsSampling.hlsl b/Source/Shaders/ShadowsSampling.hlsl
index c56904e6b..e53cab08d 100644
--- a/Source/Shaders/ShadowsSampling.hlsl
+++ b/Source/Shaders/ShadowsSampling.hlsl
@@ -283,6 +283,11 @@ ShadowSample SampleDirectionalLightShadow(LightData light, Buffer<float4> shadow
 #endif
 
     result.SurfaceShadow = PostProcessShadow(shadow, result.SurfaceShadow);
+
+    // Fix shadow intensity that got reduced by cascades sharpness stabilization (see above)
+    if (cascadeIndex != 0 && result.SurfaceShadow <= 0.1f)
+        result.SurfaceShadow += 0.01f;
+
     return result;
 }