From 8bf96d873826094cd1e8a5c9dbcf5b9826dfdf1f Mon Sep 17 00:00:00 2001
From: gigaherz <gigaherz@gmail.com>
Date: Sun, 11 Dec 2022 20:36:17 +0100
Subject: [PATCH] Fix OBJ Loader caches not being thread-safe. (#9204)

---
 .../java/net/minecraftforge/client/model/obj/ObjLoader.java   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/net/minecraftforge/client/model/obj/ObjLoader.java b/src/main/java/net/minecraftforge/client/model/obj/ObjLoader.java
index 3c2bf40eb8..b06c4569ef 100644
--- a/src/main/java/net/minecraftforge/client/model/obj/ObjLoader.java
+++ b/src/main/java/net/minecraftforge/client/model/obj/ObjLoader.java
@@ -31,8 +31,8 @@ public class ObjLoader implements IGeometryLoader<ObjModel>, ResourceManagerRelo
 {
     public static ObjLoader INSTANCE = new ObjLoader();
 
-    private final Map<ObjModel.ModelSettings, ObjModel> modelCache = Maps.newHashMap();
-    private final Map<ResourceLocation, ObjMaterialLibrary> materialCache = Maps.newHashMap();
+    private final Map<ObjModel.ModelSettings, ObjModel> modelCache = Maps.newConcurrentMap();
+    private final Map<ResourceLocation, ObjMaterialLibrary> materialCache = Maps.newConcurrentMap();
 
     private ResourceManager manager = Minecraft.getInstance().getResourceManager();