From 3ddd7ace4e07f2fed2af40debd74ea2e7319b5b1 Mon Sep 17 00:00:00 2001
From: arne schober <Arne.Schober@epicgames.com>
Date: Mon, 18 Feb 2019 19:28:42 -0500
Subject: [PATCH] Strip Additional IndexBuffers from resources when not in use,
 which should save about 1MB when used on mobile. #RB marcus.Wassmer

#ROBOMERGE-SOURCE: CL 5054298 via CL 5054476 via CL 5056099

[CL 5056278 by arne schober in Main branch]
---
 .../Source/Niagara/Private/NiagaraRendererMeshes.cpp        | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Engine/Plugins/FX/Niagara/Source/Niagara/Private/NiagaraRendererMeshes.cpp b/Engine/Plugins/FX/Niagara/Source/Niagara/Private/NiagaraRendererMeshes.cpp
index 32a0a9600584..0c0ba7712040 100644
--- a/Engine/Plugins/FX/Niagara/Source/Niagara/Private/NiagaraRendererMeshes.cpp
+++ b/Engine/Plugins/FX/Niagara/Source/Niagara/Private/NiagaraRendererMeshes.cpp
@@ -345,13 +345,13 @@ void NiagaraRendererMeshes::GetDynamicMeshElements(const TArray<const FSceneView
 
 					if (bIsWireframe)
 					{
-						if (LODModel.WireframeIndexBuffer.IsInitialized())
+						if (LODModel.AdditionalIndexBuffers && LODModel.AdditionalIndexBuffers->WireframeIndexBuffer.IsInitialized())
 						{
 							Mesh.Type = PT_LineList;
 							Mesh.MaterialRenderProxy = UMaterial::GetDefaultMaterial(MD_Surface)->GetRenderProxy();
 							BatchElement.FirstIndex = 0;
-							BatchElement.IndexBuffer = &LODModel.WireframeIndexBuffer;
-							BatchElement.NumPrimitives = LODModel.WireframeIndexBuffer.GetNumIndices() / 2;
+							BatchElement.IndexBuffer = &LODModel.AdditionalIndexBuffers->WireframeIndexBuffer;
+							BatchElement.NumPrimitives = LODModel.AdditionalIndexBuffers->WireframeIndexBuffer.GetNumIndices() / 2;
 
 						}
 						else