From a8fda9b4d079b8bc17f49b9a328cedfd099e7b7e Mon Sep 17 00:00:00 2001
From: Romain Guy <romainguy@curious-creature.com>
Date: Tue, 19 Mar 2024 11:11:44 -0700
Subject: [PATCH] Make PBR Neutral invertible (#7677)

Based on model-viewer's change at
https://github.com/google/model-viewer/pull/4716
---
 filament/src/ToneMapper.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/filament/src/ToneMapper.cpp b/filament/src/ToneMapper.cpp
index 2afa58f4be3..9c5a191210c 100644
--- a/filament/src/ToneMapper.cpp
+++ b/filament/src/ToneMapper.cpp
@@ -253,7 +253,7 @@ float3 PBRNeutralToneMapper::operator()(math::float3 color) const noexcept {
     color *= newPeak / peak;
 
     float g = 1.0f - 1.0f / (desaturation * (peak - newPeak) + 1.0f);
-    return mix(color, float3(1.0f), g);
+    return mix(color, float3(newPeak), g);
 }
 
 //------------------------------------------------------------------------------