Mark NavDisplay stateSet as STATIC

diff --git a/src/Instrumentation/NavDisplay.cxx b/src/Instrumentation/NavDisplay.cxx
index 83de81bbf8b4100fbe1c4a045568c10f8aae1294..7b7e3488af1c7aeaf36401cb7a0cddf3e6eb01a1 100644 (file)
--- a/src/Instrumentation/NavDisplay.cxx
+++ b/src/Instrumentation/NavDisplay.cxx
@@ -443,7 +443,8 @@ NavDisplay::init ()
     
     osg::StateSet *stateSet = _geom->getOrCreateStateSet();
     stateSet->setTextureAttributeAndModes(0, _symbolTexture.get());
-    
+    stateSet->setDataVariance(osg::Object::STATIC);
+  
     // Initially allocate space for 128 quads
     _vertices = new osg::Vec2Array;
     _vertices->setDataVariance(osg::Object::DYNAMIC);