diff --git a/apps/openmw/mwrender/water.cpp b/apps/openmw/mwrender/water.cpp
index f9f5e476c..875d6d5bb 100644
--- a/apps/openmw/mwrender/water.cpp
+++ b/apps/openmw/mwrender/water.cpp
@@ -233,6 +233,7 @@ class Refraction : public SceneUtil::RTTNode
 {
 public:
     Refraction()
+        : RTTNode(false)
     {
         mClipCullNode = new ClipCullNode;
     }
@@ -296,6 +297,7 @@ class Reflection : public SceneUtil::RTTNode
 {
 public:
     Reflection(bool isInterior)
+        : RTTNode(false)
     {
         setInterior(isInterior);
         mClipCullNode = new ClipCullNode;
diff --git a/components/sceneutil/rtt.cpp b/components/sceneutil/rtt.cpp
index 8c4d2d695..e6a744900 100644
--- a/components/sceneutil/rtt.cpp
+++ b/components/sceneutil/rtt.cpp
@@ -34,7 +34,6 @@ namespace SceneUtil
             setClearMask(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
             setRenderTargetImplementation(osg::Camera::FRAME_BUFFER_OBJECT);
 
-
             unsigned int rttSize = Settings::Manager::getInt("rtt size", "Water");
             setViewport(0, 0, rttSize, rttSize);
 
@@ -63,7 +62,8 @@ namespace SceneUtil
         osg::ref_ptr<osg::Texture2D> mDepthBuffer;
     };
 
-    RTTNode::RTTNode()
+    RTTNode::RTTNode(bool doPerViewMapping)
+        : mDoPerViewMapping(doPerViewMapping)
     {
         addCullCallback(new CullCallback(this));
     }
@@ -91,6 +91,11 @@ namespace SceneUtil
 
     RTTNode::ViewDependentData* RTTNode::getViewDependentData(osgUtil::CullVisitor* cv)
     {
+        if (!mDoPerViewMapping)
+            // Always setting it to null is an easy way to disable per-view mapping when mDoPerViewMapping is false.
+            // This is safe since the visitor is never dereferenced.
+            cv = nullptr;
+
         if (mViewDependentDataMap.count(cv) == 0)
         {
             mViewDependentDataMap[cv].reset(new ViewDependentData);
diff --git a/components/sceneutil/rtt.hpp b/components/sceneutil/rtt.hpp
index afb840873..251124de0 100644
--- a/components/sceneutil/rtt.hpp
+++ b/components/sceneutil/rtt.hpp
@@ -30,7 +30,7 @@ namespace SceneUtil
     class RTTNode : public osg::Node
     {
     public:
-        RTTNode();
+        RTTNode(bool doPerViewMapping);
         ~RTTNode();
 
         osg::Texture2D* getColorTexture(osgUtil::CullVisitor* cv);
@@ -57,6 +57,7 @@ namespace SceneUtil
 
         typedef std::map< osgUtil::CullVisitor*, std::unique_ptr<ViewDependentData> >  ViewDependentDataMap;
         ViewDependentDataMap mViewDependentDataMap;
+        bool mDoPerViewMapping;
     };
 }
 #endif