From 83f43b37e615ff4c45b3ecabaa2650e7585623c3 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 24 Nov 2005 10:14:05 +0000
Subject: [PATCH] Added automatic setting of thread safe reference counting
 when multi-threaded cameras are used.

---
 src/osgProducer/OsgCameraGroup.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/osgProducer/OsgCameraGroup.cpp b/src/osgProducer/OsgCameraGroup.cpp
index 0803dd34d..fe6e21d47 100644
--- a/src/osgProducer/OsgCameraGroup.cpp
+++ b/src/osgProducer/OsgCameraGroup.cpp
@@ -231,6 +231,11 @@ void OsgCameraGroup::_init()
         else if (strcmp(str,"OFF")==0) Producer::RenderSurface::shareAllGLContexts(false);
     }
     
+    if (_thread_model==ThreadPerCamera && _cfg->getNumberOfCameras()>1)
+    {
+        // switch on thread safe reference counting by default when running multi-threaded.
+        osg::Referenced::setThreadSafeReferenceCounting(true);
+    }
 
     _scene_data = NULL;
     _global_stateset = NULL;