From 5e6723aa226b112514ac283dcf6e1363f9cf07a3 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Wed, 25 Mar 2026 17:16:01 +0100
Subject: [PATCH] Fix missing init and serialization #2977

---
 Source/Engine/Tools/ModelTool/ModelTool.cpp | 2 ++
 Source/Engine/Tools/ModelTool/ModelTool.h   | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/Source/Engine/Tools/ModelTool/ModelTool.cpp b/Source/Engine/Tools/ModelTool/ModelTool.cpp
index 1c766a70f..e3da92da2 100644
--- a/Source/Engine/Tools/ModelTool/ModelTool.cpp
+++ b/Source/Engine/Tools/ModelTool/ModelTool.cpp
@@ -593,6 +593,7 @@ void ModelTool::Options::Serialize(SerializeStream& stream, const void* otherObj
     SERIALIZE(SloppyOptimization);
     SERIALIZE(LODTargetError);
     SERIALIZE(ImportMaterials);
+    SERIALIZE(CreateEmptyMaterialSlots);
     SERIALIZE(ImportMaterialsAsInstances);
     SERIALIZE(InstanceToImportAs);
     SERIALIZE(ImportTextures);
@@ -648,6 +649,7 @@ void ModelTool::Options::Deserialize(DeserializeStream& stream, ISerializeModifi
     DESERIALIZE(SloppyOptimization);
     DESERIALIZE(LODTargetError);
     DESERIALIZE(ImportMaterials);
+    DESERIALIZE(CreateEmptyMaterialSlots);
     DESERIALIZE(ImportMaterialsAsInstances);
     DESERIALIZE(InstanceToImportAs);
     DESERIALIZE(ImportTextures);
diff --git a/Source/Engine/Tools/ModelTool/ModelTool.h b/Source/Engine/Tools/ModelTool/ModelTool.h
index ecc95c601..00d7028cf 100644
--- a/Source/Engine/Tools/ModelTool/ModelTool.h
+++ b/Source/Engine/Tools/ModelTool/ModelTool.h
@@ -313,9 +313,9 @@ public:
         // If checked, the importer will create materials for model meshes as specified in the file.
         API_FIELD(Attributes="EditorOrder(399), EditorDisplay(\"Materials\"), VisibleIf(nameof(ShowGeometry))")
         bool ImportMaterials = true;
-        // If checked, the importer will create empty material slots for every material.
+        // If checked, the importer will create empty material slots for every material without importing materials nor textures.
         API_FIELD(Attributes="EditorOrder(400), EditorDisplay(\"Materials\"), VisibleIf(nameof(ShowGeometry))")
-        bool CreateEmptyMaterialSlots;
+        bool CreateEmptyMaterialSlots = false;
         // If checked, the importer will create the model's materials as instances of a base material.
         API_FIELD(Attributes="EditorOrder(401), EditorDisplay(\"Materials\"), VisibleIf(nameof(ImportMaterials)), VisibleIf(nameof(ShowGeometry)), VisibleIf(nameof(CreateEmptyMaterialSlots), true)")
         bool ImportMaterialsAsInstances = false;