From 36303c5ad3ee8b35d5f1de8355ad54c7d3217285 Mon Sep 17 00:00:00 2001
From: Roberto De Ioris <roberto.deioris@gmail.com>
Date: Tue, 14 Sep 2021 09:26:25 +0200
Subject: [PATCH] fixed static mesh indices computation, fixes #18

---
 Source/glTFRuntime/Private/glTFRuntimeParserStaticMeshes.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Source/glTFRuntime/Private/glTFRuntimeParserStaticMeshes.cpp b/Source/glTFRuntime/Private/glTFRuntimeParserStaticMeshes.cpp
index 1e633cbc..3fca7149 100644
--- a/Source/glTFRuntime/Private/glTFRuntimeParserStaticMeshes.cpp
+++ b/Source/glTFRuntime/Private/glTFRuntimeParserStaticMeshes.cpp
@@ -131,9 +131,9 @@ UStaticMesh* FglTFRuntimeParser::LoadStaticMesh_Internal(TArray<TSharedRef<FJson
 			for (int32 VertexInstanceSectionIndex = 0; VertexInstanceSectionIndex < NumVertexInstancesPerSection; VertexInstanceSectionIndex++)
 			{
 				uint32 VertexIndex = Primitive.Indices[VertexInstanceSectionIndex];
-				LODIndices.Add(VertexInstanceBaseIndex + VertexIndex);
+				LODIndices.Add(VertexInstanceBaseIndex + VertexInstanceSectionIndex);
 
-				FStaticMeshBuildVertex& StaticMeshVertex = StaticMeshBuildVertices[VertexInstanceBaseIndex + VertexIndex];
+				FStaticMeshBuildVertex& StaticMeshVertex = StaticMeshBuildVertices[VertexInstanceBaseIndex + VertexInstanceSectionIndex];
 
 				StaticMeshVertex.Position = GetSafeValue(Primitive.Positions, VertexIndex, FVector::ZeroVector, bMissingIgnore);
 				BoundingBox += StaticMeshVertex.Position;