From b275ffc146923eb11de0ea7611b945d8c36072e1 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Wed, 27 Dec 2023 21:18:28 +0100
Subject: [PATCH] Fix PostFx Materials blending for duplicated entries

#1991
---
 Source/Engine/Graphics/PostProcessSettings.cpp | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/Source/Engine/Graphics/PostProcessSettings.cpp b/Source/Engine/Graphics/PostProcessSettings.cpp
index a564bc85f..6e2b21045 100644
--- a/Source/Engine/Graphics/PostProcessSettings.cpp
+++ b/Source/Engine/Graphics/PostProcessSettings.cpp
@@ -207,13 +207,12 @@ void PostFxMaterialsSettings::BlendWith(PostFxMaterialsSettings& other, float we
     if (isHalf)
     {
         int32 indexSrc = 0;
-        const auto materialsSrc = other.Materials.Get();
+        const AssetReference<MaterialBase>* materialsSrc = other.Materials.Get();
         while (Materials.Count() != POST_PROCESS_SETTINGS_MAX_MATERIALS && indexSrc < other.Materials.Count())
         {
-            if (materialsSrc[indexSrc])
-            {
-                Materials.Add(materialsSrc[indexSrc]);
-            }
+            MaterialBase* mat = materialsSrc[indexSrc].Get();
+            if (mat && !Materials.Contains(mat))
+                Materials.Add(mat);
             indexSrc++;
         }
     }