From 1371f775ee23cdb3b397b92def310eca4c1e5f11 Mon Sep 17 00:00:00 2001
From: Ryan Huffman <ryanhuffman@gmail.com>
Date: Fri, 19 Jun 2015 16:51:13 -0700
Subject: [PATCH] Add mutex lock around access to
 Model::_calculatedMeshPartOffset

---
 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 086139c646..1397512f4a 100644
--- a/libraries/render-utils/src/Model.cpp
+++ b/libraries/render-utils/src/Model.cpp
@@ -2021,7 +2021,9 @@ void Model::renderPart(RenderArgs* args, int meshIndex, int partIndex, bool tran
         }
     }
     
+    _mutex.lock();
     qint64 offset = _calculatedMeshPartOffset[QPair<int,int>(meshIndex, partIndex)];
+    _mutex.unlock();
 
     if (part.quadIndices.size() > 0) {
         batch.drawIndexed(gpu::QUADS, part.quadIndices.size(), offset);