From cfac4c74bc5bbc95dc7f04d838c39f46916f86f8 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 15 Jul 2005 08:32:36 +0000
Subject: [PATCH] Added reference frame to TexGenNode

---
 include/osg/TexGenNode      | 16 ++++++++++++++++
 src/osgUtil/CullVisitor.cpp | 16 ++++++++++++----
 2 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/include/osg/TexGenNode b/include/osg/TexGenNode
index 9f6ecbb69..a6ebaf1f4 100644
--- a/include/osg/TexGenNode
+++ b/include/osg/TexGenNode
@@ -33,6 +33,20 @@ class OSG_EXPORT TexGenNode : public Group
         META_Node(osg, TexGenNode);
 	
         
+        enum ReferenceFrame
+        {
+            RELATIVE_RF,
+            ABSOLUTE_RF
+        };
+        
+        /** Set the TexGenNode's ReferenceFrame, either to be relative to its
+          * parent reference frame. */
+        void setReferenceFrame(ReferenceFrame rf);
+        
+        /** Ge thte TexGenNode's ReferenceFrame.*/
+        ReferenceFrame getReferenceFrame() const { return _referenceFrame; }
+
+        /** Set the texture unit that this TexGenNode is associated with.*/
         void setTextureUnit(unsigned int textureUnit) { _textureUnit = textureUnit; }
 
         unsigned int getTextureUnit() const { return _textureUnit; }
@@ -54,6 +68,8 @@ class OSG_EXPORT TexGenNode : public Group
         unsigned int _textureUnit;
         StateAttribute::GLModeValue _value;
         osg::ref_ptr<TexGen> _texgen;
+
+        ReferenceFrame                  _referenceFrame;
 };
 
 }
diff --git a/src/osgUtil/CullVisitor.cpp b/src/osgUtil/CullVisitor.cpp
index ae069f40d..247b678e6 100644
--- a/src/osgUtil/CullVisitor.cpp
+++ b/src/osgUtil/CullVisitor.cpp
@@ -873,10 +873,17 @@ void CullVisitor::apply(TexGenNode& node)
     StateSet* node_state = node.getStateSet();
     if (node_state) pushStateSet(node_state);
 
-    RefMatrix& matrix = getModelViewMatrix();
-
-    addPositionedTextureAttribute(node.getTextureUnit(), &matrix,node.getTexGen());
 
+    if (node.getReferenceFrame()==osg::TexGenNode::RELATIVE_RF)
+    {
+        RefMatrix& matrix = getModelViewMatrix();
+        addPositionedTextureAttribute(node.getTextureUnit(), &matrix ,node.getTexGen());
+    }
+    else
+    {
+        addPositionedTextureAttribute(node.getTextureUnit(), 0 ,node.getTexGen());
+    }
+    
     handle_cull_callbacks_and_traverse(node);
 
     // pop the node's state off the geostate stack.    
@@ -1028,6 +1035,7 @@ void CullVisitor::apply(osg::CameraNode& camera)
     // push the node's state.
     StateSet* node_state = camera.getStateSet();
     if (node_state) pushStateSet(node_state);
+    
 
     if (camera.getReferenceFrame()==osg::Transform::ABSOLUTE_RF)
     {
@@ -1080,7 +1088,7 @@ void CullVisitor::apply(osg::CameraNode& camera)
         rtts->setViewport( viewport );
         
         // set up to charge the same RenderStageLighting is the parent previous stage.
-        rtts->setRenderStageLighting(previous_stage->getRenderStageLighting());
+        //rtts->setRenderStageLighting(previous_stage->getRenderStageLighting());
 
         // record the render bin, to be restored after creation
         // of the render to text