From cca15292c5112c650a1356a9056da98e34638ccf Mon Sep 17 00:00:00 2001
From: Tim <15017472+doodlum@users.noreply.github.com>
Date: Fri, 22 Nov 2024 10:19:52 +0000
Subject: [PATCH] fix: tonemapping saturation

---
 package/Shaders/ISHDR.hlsl | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/package/Shaders/ISHDR.hlsl b/package/Shaders/ISHDR.hlsl
index 5cbf7b7f2..f7177cc62 100644
--- a/package/Shaders/ISHDR.hlsl
+++ b/package/Shaders/ISHDR.hlsl
@@ -112,11 +112,16 @@ PS_OUTPUT main(PS_INPUT input)
 			blendedColor = GetTonemapFactorReinhard(inputColor);
 		}
 
+		float blendedLuminance = Color::RGBToLuminance(blendedColor);
+
+		// Compensate for modified tonemapping desaturating colors
+		blendedColor = lerp(blendedLuminance, blendedColor, 1.2);
+
 		blendedColor += saturate(Param.x - blendedColor) * bloomColor;
 
 		gameSdrColor = blendedColor;
 
-		float blendedLuminance = Color::RGBToLuminance(blendedColor);
+		blendedLuminance = Color::RGBToLuminance(blendedColor);
 
 		float3 linearColor = Cinematic.w * lerp(lerp(blendedLuminance, float4(blendedColor, 1), Cinematic.x), blendedLuminance * Tint, Tint.w).xyz;