Implement empty enter/leavepick function to fix errors when picking with active textures

git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@5578 383ad7c9-94d9-4d36-a494-682f7c89f535

ACG/Scenegraph/TextureNode.cc

@@ -425,6 +425,17 @@ void TextureNode::leave(GLState& /* _state */ , unsigned int _drawmode)
    }
 }
 
+void TextureNode::enterPick(GLState& /*_state*/ ,
+                            PickTarget /*_target*/,
+                            unsigned int /*_drawMode*/ ) {
+
+}
+
+void TextureNode::leavePick(GLState& /*_state*/,
+                            PickTarget /*_target*/,
+                            unsigned int /*_drawMode*/ ) {
+}
+
 //----------------------------------------------------------------------------
 
 

ACG/Scenegraph/TextureNode.hh

@@ -250,6 +250,14 @@ public:
    */
   void leave(GLState& _state, unsigned int _drawmode);
 
+  /** \brief Do nothing in picking
+   */
+  void enterPick(GLState& _state, PickTarget _target, unsigned int _drawMode );
+
+  /** \brief Do nothing in picking
+   */
+  void leavePick(GLState& _state, PickTarget _target, unsigned int _drawMode );
+
 /** @} */
 
 private: