From 74672485556ef5760a4c271b2f663b6a5679bc5a Mon Sep 17 00:00:00 2001
From: AnyOldName3 <krizdjali+github@gmail.com>
Date: Sat, 24 Feb 2018 00:14:29 +0000
Subject: [PATCH] Undo a modification from the upstream shadow technique which
 breaks compatibiltiy with OSG 3.4

---
 components/sceneutil/mwshadowtechnique.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/sceneutil/mwshadowtechnique.cpp b/components/sceneutil/mwshadowtechnique.cpp
index f72f2ce159..876943c884 100644
--- a/components/sceneutil/mwshadowtechnique.cpp
+++ b/components/sceneutil/mwshadowtechnique.cpp
@@ -168,7 +168,7 @@ VDSMCameraCullCallback::VDSMCameraCullCallback(ViewDependentShadowMap* vdsm, osg
 
 void VDSMCameraCullCallback::operator()(osg::Node* node, osg::NodeVisitor* nv)
 {
-    osgUtil::CullVisitor* cv = nv->asCullVisitor();
+    osgUtil::CullVisitor* cv = dynamic_cast<osgUtil::CullVisitor*>(nv);
     osg::Camera* camera = node->asCamera();
     OSG_INFO<<"VDSMCameraCullCallback::operator()(osg::Node* "<<camera<<", osg::NodeVisitor* "<<cv<<")"<<std::endl;