From a7f291154b0a39ad59be65013aadf900605609be Mon Sep 17 00:00:00 2001
From: Ryan Huffman <ryanhuffman@gmail.com>
Date: Fri, 19 Jun 2015 16:28:58 -0700
Subject: [PATCH] Add lock around recalculateMeshPartOffsets call

---
 libraries/render-utils/src/Model.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libraries/render-utils/src/Model.cpp b/libraries/render-utils/src/Model.cpp
index 795e184735..086139c646 100644
--- a/libraries/render-utils/src/Model.cpp
+++ b/libraries/render-utils/src/Model.cpp
@@ -1811,7 +1811,9 @@ void Model::renderPart(RenderArgs* args, int meshIndex, int partIndex, bool tran
     
     // We need to make sure we have valid offsets calculated before we can render
     if (!_calculatedMeshPartOffsetValid) {
+        _mutex.lock();
         recalculateMeshPartOffsets();
+        _mutex.unlock();
     }
     auto textureCache = DependencyManager::get<TextureCache>();