Added releaseGLObjects(..) and resizeGLObjectBuffers(..) to osgShadow::ShadowTechnique's

include/osgShadow/DebugShadowMap

@@ -77,6 +77,15 @@ class OSGSHADOW_EXPORT DebugShadowMap : public ViewDependentShadowTechnique
         /** Set the file name of debuging dump */
         void setDebugDump( const std::string & debugDumpFile ) { _debugDump = debugDumpFile; }
 
+
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
 protected:
         /** Classic protected OSG destructor */
         virtual ~DebugShadowMap();
@@ -182,6 +191,11 @@ class OSGSHADOW_EXPORT DebugShadowMap : public ViewDependentShadowTechnique
                   const ConvexPolyhedron * hull );
 
             void dump( const std::string & filename );
+
+            virtual void resizeGLObjectBuffers(unsigned int maxSize);
+            virtual void releaseGLObjects(osg::State* = 0) const;
+
+
         };
 
         META_ViewDependentShadowTechniqueData( ThisClass, ViewData )

include/osgShadow/MinimalDrawBoundsShadowMap

@@ -76,6 +76,9 @@ class OSGSHADOW_EXPORT MinimalDrawBoundsShadowMap
             virtual void performBoundAnalysis( const osg::Camera& camera );
 
             ViewData( void ): _boundAnalysisSize( 64, 64 ) {}
+
+            virtual void resizeGLObjectBuffers(unsigned int maxSize);
+            virtual void releaseGLObjects(osg::State* = 0) const;
         };
 
         friend struct ViewData;

include/osgShadow/ParallelSplitShadowMap

@@ -134,6 +134,14 @@ class OSGSHADOW_EXPORT ParallelSplitShadowMap :  public ShadowTechnique
         inline SplitCalcMode getSplitCalculationMode() const { return _SplitCalcMode; }
 
 
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
     protected :
 
         virtual ~ParallelSplitShadowMap() {}
@@ -169,7 +177,11 @@ class OSGSHADOW_EXPORT ParallelSplitShadowMap :  public ShadowTechnique
             unsigned int                      _splitID;
             unsigned int                      _resolution;
 
-            osg::Uniform*                    _farDistanceSplit;
+            osg::ref_ptr<osg::Uniform>        _farDistanceSplit;
+
+            void resizeGLObjectBuffers(unsigned int maxSize);
+            void releaseGLObjects(osg::State* = 0) const;
+
         };
 
         typedef std::map<unsigned int,PSSMShadowSplitTexture> PSSMShadowSplitTextureMap;

include/osgShadow/ShadowMap

@@ -83,6 +83,16 @@ class OSGSHADOW_EXPORT ShadowMap : public ShadowTechnique
         /** Clean scene graph from any shadow technique specific nodes, state and drawables.*/
         virtual void cleanSceneGraph();
 
+
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
+
         // debug methods
 
         osg::ref_ptr<osg::Camera> makeDebugHUD();

include/osgShadow/ShadowTechnique

@@ -35,7 +35,9 @@ class OSGSHADOW_EXPORT ShadowTechnique : public osg::Object
 
         ShadowTechnique(const ShadowTechnique& es, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY);
 
-        META_Object(osgShadow, ShadowTechnique);
+        virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const ShadowTechnique*>(obj)!=NULL; } \
+        virtual const char* libraryName() const { return "osgShadow"; }\
+        virtual const char* className() const { return "ShadowTechnique"; }
 
         ShadowedScene* getShadowedScene() { return _shadowedScene; }
 
@@ -58,6 +60,14 @@ class OSGSHADOW_EXPORT ShadowTechnique : public osg::Object
         /** Dirty so that cached data structures are updated.*/
         virtual void dirty() { _dirty = true; }
 
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize) = 0;
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const = 0;
+
 protected :
 
         class OSGSHADOW_EXPORT CameraCullCallback : public osg::NodeCallback

include/osgShadow/ShadowTexture

@@ -51,6 +51,14 @@ class OSGSHADOW_EXPORT ShadowTexture : public ShadowTechnique
         virtual void cleanSceneGraph();
 
 
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
     protected :
 
         virtual ~ShadowTexture() {}

include/osgShadow/ShadowVolume

@@ -53,6 +53,14 @@ class OSGSHADOW_EXPORT ShadowVolume : public ShadowTechnique
         virtual void cleanSceneGraph();
 
 
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
     protected :
 
         virtual ~ShadowVolume();

include/osgShadow/StandardShadowMap

@@ -124,6 +124,15 @@ class OSGSHADOW_EXPORT StandardShadowMap : public DebugShadowMap
         void setMainFragmentShader( osg::Shader * shader )
             { _mainFragmentShader = shader; }
 
+
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
 protected:
         /** Classic protected OSG destructor */
         virtual ~StandardShadowMap(void);
@@ -188,6 +197,9 @@ class OSGSHADOW_EXPORT StandardShadowMap : public DebugShadowMap
                 const osg::Vec3 &worldLightDir,
                 const osg::Vec3 &worldLightUp
                 = osg::Vec3(0,1,0) );
+
+            virtual void resizeGLObjectBuffers(unsigned int maxSize);
+            virtual void releaseGLObjects(osg::State* = 0) const;
         };
 
         friend struct ViewData;

include/osgShadow/ViewDependentShadowMap

@@ -171,7 +171,6 @@ class OSGSHADOW_EXPORT ViewDependentShadowMap : public ShadowTechnique
 
         virtual osg::StateSet* selectStateSetForRenderingShadow(ViewDependentData& vdd) const;
 
-
 protected:
         virtual ~ViewDependentShadowMap();
 

include/osgShadow/ViewDependentShadowTechnique

@@ -17,9 +17,10 @@
 #ifndef OSGSHADOW_VIEWDEPENDENTSHADOWTECHINIQUE
 #define OSGSHADOW_VIEWDEPENDENTSHADOWTECHINIQUE 1
 
+#include <osg/Identifier>
 #include <osgShadow/ShadowTechnique>
-#include <map>
 #include <osgShadow/Export>
+#include <map>
 
 namespace osgShadow {
 /**
@@ -139,6 +140,15 @@ class OSGSHADOW_EXPORT ViewDependentShadowTechnique
         /** Traverse shadow scene graph.*/
         virtual void traverse(osg::NodeVisitor& nv);
 
+
+        /** Resize any per context GLObject buffers to specified size. */
+        virtual void resizeGLObjectBuffers(unsigned int maxSize);
+
+        /** If State is non-zero, this function releases any associated OpenGL objects for
+           * the specified graphics context. Otherwise, releases OpenGL objects
+           * for all graphics contexts. */
+        virtual void releaseGLObjects(osg::State* = 0) const;
+
 protected:
         /** Classic protected OSG destructor */
         ~ViewDependentShadowTechnique( void );
@@ -196,6 +206,12 @@ class OSGSHADOW_EXPORT ViewDependentShadowTechnique
             */
             osg::observer_ptr< ViewDependentShadowTechnique > _st;
 
+            virtual void resizeGLObjectBuffers(unsigned int maxSize) {}
+
+            /** If State is non-zero, this function releases any associated OpenGL objects for
+            * the specified graphics context. Otherwise, releases OpenGL objects
+            * for all graphics contexts. */
+            virtual void releaseGLObjects(osg::State* = 0) const {}
         };
 
         /**
@@ -203,7 +219,7 @@ class OSGSHADOW_EXPORT ViewDependentShadowTechnique
         ViewDependentShadowTechnique uses this map to find VieData for each cull vitior
         */
 
-        typedef std::map< osg::ref_ptr< osgUtil::CullVisitor >,
+        typedef std::map< osg::ref_ptr< osg::Identifier >,
                           osg::ref_ptr< ViewData > > ViewDataMap;
 
         ViewDataMap                                       _viewDataMap;

src/osgShadow/DebugShadowMap.cpp

@@ -123,6 +123,67 @@ DebugShadowMap::~DebugShadowMap()
 {
 }
 
+
+void DebugShadowMap::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    osg::resizeGLObjectBuffers(_depthColorFragmentShader, maxSize);
+
+    ViewDependentShadowTechnique::resizeGLObjectBuffers(maxSize);
+}
+
+void DebugShadowMap::releaseGLObjects(osg::State* state) const
+{
+    osg::releaseGLObjects(_depthColorFragmentShader, state);
+
+    ViewDependentShadowTechnique::releaseGLObjects(state);
+}
+
+void DebugShadowMap::ViewData::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    BaseClass::ViewData::resizeGLObjectBuffers(maxSize);
+
+    osg::resizeGLObjectBuffers(_texture, maxSize);
+    osg::resizeGLObjectBuffers(_camera, maxSize);
+    osg::resizeGLObjectBuffers(_depthColorFragmentShader, maxSize);
+
+    for(PolytopeGeometryMap::iterator itr = _polytopeGeometryMap.begin();
+        itr != _polytopeGeometryMap.end();
+        ++itr)
+    {
+        osg::resizeGLObjectBuffers(itr->second._geometry[0], maxSize);
+        osg::resizeGLObjectBuffers(itr->second._geometry[1], maxSize);
+    }
+
+    osg::resizeGLObjectBuffers(_geode[0], maxSize);
+    osg::resizeGLObjectBuffers(_geode[1], maxSize);
+    osg::resizeGLObjectBuffers(_transform[0], maxSize);
+    osg::resizeGLObjectBuffers(_transform[1], maxSize);
+    osg::resizeGLObjectBuffers(_cameraDebugHUD, maxSize);
+}
+
+void DebugShadowMap::ViewData::releaseGLObjects(osg::State* state) const
+{
+    BaseClass::ViewData::releaseGLObjects(state);
+
+    osg::releaseGLObjects(_texture, state);
+    osg::releaseGLObjects(_camera, state);
+    osg::releaseGLObjects(_depthColorFragmentShader, state);
+
+    for(PolytopeGeometryMap::const_iterator itr = _polytopeGeometryMap.begin();
+        itr != _polytopeGeometryMap.end();
+        ++itr)
+    {
+        osg::releaseGLObjects(itr->second._geometry[0], state);
+        osg::releaseGLObjects(itr->second._geometry[1], state);
+    }
+
+    osg::releaseGLObjects(_geode[0], state);
+    osg::releaseGLObjects(_geode[1], state);
+    osg::releaseGLObjects(_transform[0], state);
+    osg::releaseGLObjects(_transform[1], state);
+    osg::releaseGLObjects(_cameraDebugHUD, state);
+}
+
 void DebugShadowMap::ViewData::cull( void )
 {
     if( getDebugDraw() && !_cameraDebugHUD.valid() )

src/osgShadow/MinimalDrawBoundsShadowMap.cpp

@@ -46,6 +46,22 @@ MinimalDrawBoundsShadowMap::~MinimalDrawBoundsShadowMap()
 {
 }
 
+void MinimalDrawBoundsShadowMap::ViewData::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    BaseClass::ViewData::resizeGLObjectBuffers(maxSize);
+
+    _boundAnalysisTexture->resizeGLObjectBuffers(maxSize);
+    _boundAnalysisCamera->resizeGLObjectBuffers(maxSize);
+}
+
+void MinimalDrawBoundsShadowMap::ViewData::releaseGLObjects(osg::State* state) const
+{
+    BaseClass::ViewData::releaseGLObjects(state);
+
+    _boundAnalysisTexture->releaseGLObjects(state);
+    _boundAnalysisCamera->releaseGLObjects(state);
+}
+
 void MinimalDrawBoundsShadowMap::ViewData::cullShadowReceivingScene( )
 {
     BaseClass::ViewData::cullShadowReceivingScene( );

src/osgShadow/ParallelSplitShadowMap.cpp

@@ -272,6 +272,47 @@ ParallelSplitShadowMap::ParallelSplitShadowMap(const ParallelSplitShadowMap& cop
 {
 }
 
+void ParallelSplitShadowMap::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    for(PSSMShadowSplitTextureMap::iterator itr = _PSSMShadowSplitTextureMap.begin();
+        itr != _PSSMShadowSplitTextureMap.end();
+        ++itr)
+    {
+        itr->second.resizeGLObjectBuffers(maxSize);
+    }
+}
+
+void ParallelSplitShadowMap::releaseGLObjects(osg::State* state) const
+{
+    for(PSSMShadowSplitTextureMap::const_iterator itr = _PSSMShadowSplitTextureMap.begin();
+        itr != _PSSMShadowSplitTextureMap.end();
+        ++itr)
+    {
+        itr->second.releaseGLObjects(state);
+    }
+}
+
+
+void ParallelSplitShadowMap::PSSMShadowSplitTexture::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    osg::resizeGLObjectBuffers(_camera, maxSize);
+    osg::resizeGLObjectBuffers(_texture, maxSize);
+    osg::resizeGLObjectBuffers(_stateset, maxSize);
+    osg::resizeGLObjectBuffers(_debug_camera, maxSize);
+    osg::resizeGLObjectBuffers(_debug_texture, maxSize);
+    osg::resizeGLObjectBuffers(_debug_stateset, maxSize);
+}
+
+void ParallelSplitShadowMap::PSSMShadowSplitTexture::releaseGLObjects(osg::State* state) const
+{
+    osg::releaseGLObjects(_camera, state);
+    osg::releaseGLObjects(_texture, state);
+    osg::releaseGLObjects(_stateset, state);
+    osg::releaseGLObjects(_debug_camera, state);
+    osg::releaseGLObjects(_debug_texture, state);
+    osg::releaseGLObjects(_debug_stateset, state);
+}
+
 void ParallelSplitShadowMap::setAmbientBias(const osg::Vec2& ambientBias)
 {
     _ambientBias = ambientBias;

src/osgShadow/ShadowMap.cpp

@@ -89,6 +89,42 @@ ShadowTechnique(copy,copyop),
 {
 }
 
+void ShadowMap::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    osg::resizeGLObjectBuffers(_camera, maxSize);
+    osg::resizeGLObjectBuffers(_texgen, maxSize);
+    osg::resizeGLObjectBuffers(_texture, maxSize);
+    osg::resizeGLObjectBuffers(_stateset, maxSize);
+    osg::resizeGLObjectBuffers(_program, maxSize);
+
+    osg::resizeGLObjectBuffers(_ls, maxSize);
+
+    for(ShaderList::iterator itr = _shaderList.begin();
+        itr != _shaderList.end();
+        ++itr)
+    {
+        osg::resizeGLObjectBuffers(*itr, maxSize);
+    }
+}
+
+void ShadowMap::releaseGLObjects(osg::State* state) const
+{
+    osg::releaseGLObjects(_camera, state);
+    osg::releaseGLObjects(_texgen, state);
+    osg::releaseGLObjects(_texture, state);
+    osg::releaseGLObjects(_stateset, state);
+    osg::releaseGLObjects(_program, state);
+
+    osg::releaseGLObjects(_ls, state);
+
+    for(ShaderList::const_iterator itr = _shaderList.begin();
+        itr != _shaderList.end();
+        ++itr)
+    {
+        osg::releaseGLObjects(*itr, state);
+    }
+}
+
 void ShadowMap::setTextureUnit(unsigned int unit)
 {
     _shadowTextureUnit = unit;

src/osgShadow/ShadowTexture.cpp

@@ -30,6 +30,20 @@ ShadowTexture::ShadowTexture(const ShadowTexture& copy, const osg::CopyOp& copyo
 {
 }
 
+void ShadowTexture::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    osg::resizeGLObjectBuffers(_camera, maxSize);
+    osg::resizeGLObjectBuffers(_texture, maxSize);
+    osg::resizeGLObjectBuffers(_stateset, maxSize);
+}
+
+void ShadowTexture::releaseGLObjects(osg::State* state) const
+{
+    osg::releaseGLObjects(_camera, state);
+    osg::releaseGLObjects(_texture, state);
+    osg::releaseGLObjects(_stateset, state);
+}
+
 void ShadowTexture::setTextureUnit(unsigned int unit)
 {
     _textureUnit = unit;

src/osgShadow/ShadowVolume.cpp

@@ -53,6 +53,26 @@ ShadowVolume::~ShadowVolume()
 {
 }
 
+void ShadowVolume::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    osg::resizeGLObjectBuffers(_occluder, maxSize);
+    osg::resizeGLObjectBuffers(_shadowVolume, maxSize);
+    osg::resizeGLObjectBuffers(_ss1, maxSize);
+    osg::resizeGLObjectBuffers(_mainShadowStateSet, maxSize);
+    osg::resizeGLObjectBuffers(_shadowVolumeStateSet, maxSize);
+    osg::resizeGLObjectBuffers(_shadowedSceneStateSet, maxSize);
+}
+
+void ShadowVolume::releaseGLObjects(osg::State* state) const
+{
+    osg::releaseGLObjects(_occluder, state);
+    osg::releaseGLObjects(_shadowVolume, state);
+    osg::releaseGLObjects(_ss1, state);
+    osg::releaseGLObjects(_mainShadowStateSet, state);
+    osg::releaseGLObjects(_shadowVolumeStateSet, state);
+    osg::releaseGLObjects(_shadowedSceneStateSet, state);
+}
+
 void ShadowVolume::setDrawMode(osgShadow::ShadowVolumeGeometry::DrawMode drawMode)
 {
     if (_drawMode == drawMode) return;
@@ -351,6 +371,5 @@ void ShadowVolume::cull(osgUtil::CullVisitor& cv)
 
 void ShadowVolume::cleanSceneGraph()
 {
-    OSG_NOTICE<<className()<<"::cleanSceneGraph()) not implemented yet, but almost."<<std::endl;
 }
 

src/osgShadow/StandardShadowMap.cpp

@@ -365,6 +365,37 @@ StandardShadowMap::~StandardShadowMap(void)
 
 }
 
+void StandardShadowMap::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    osg::resizeGLObjectBuffers(_mainVertexShader, maxSize);
+    osg::resizeGLObjectBuffers(_mainFragmentShader, maxSize);
+    osg::resizeGLObjectBuffers(_shadowVertexShader, maxSize);
+    osg::resizeGLObjectBuffers(_shadowFragmentShader, maxSize);
+
+    DebugShadowMap::resizeGLObjectBuffers(maxSize);
+}
+
+void StandardShadowMap::releaseGLObjects(osg::State* state) const
+{
+    osg::releaseGLObjects(_mainVertexShader, state);
+    osg::releaseGLObjects(_mainFragmentShader, state);
+    osg::releaseGLObjects(_shadowVertexShader, state);
+    osg::releaseGLObjects(_shadowFragmentShader, state);
+
+    DebugShadowMap::releaseGLObjects(state);
+}
+
+void StandardShadowMap::ViewData::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    osg::resizeGLObjectBuffers(_stateset, maxSize);
+}
+
+void StandardShadowMap::ViewData::releaseGLObjects(osg::State* state) const
+{
+    osg::releaseGLObjects(_stateset, state);
+}
+
+
 void StandardShadowMap::updateTextureCoordIndices( unsigned int fromTextureCoordIndex, unsigned int toTextureCoordIndex )
 {
 

src/osgShadow/ViewDependentShadowTechnique.cpp

@@ -37,6 +37,27 @@ ViewDependentShadowTechnique::~ViewDependentShadowTechnique(void)
 
 }
 
+
+void ViewDependentShadowTechnique::resizeGLObjectBuffers(unsigned int maxSize)
+{
+    for(ViewDataMap::iterator itr = _viewDataMap.begin();
+        itr != _viewDataMap.end();
+        ++itr)
+    {
+        itr->second->resizeGLObjectBuffers(maxSize);
+    }
+}
+
+void ViewDependentShadowTechnique::releaseGLObjects(osg::State* state) const
+{
+    for(ViewDataMap::const_iterator itr = _viewDataMap.begin();
+        itr != _viewDataMap.end();
+        ++itr)
+    {
+        itr->second->releaseGLObjects(state);
+    }
+}
+
 void ViewDependentShadowTechnique::traverse(osg::NodeVisitor& nv)
 {
     osgShadow::ShadowTechnique::traverse(nv);
@@ -96,14 +117,14 @@ ViewDependentShadowTechnique::ViewData *
 ViewDependentShadowTechnique::getViewDependentData( osgUtil::CullVisitor * cv )
 {
     OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_viewDataMapMutex);
-    return _viewDataMap[ cv ].get();
+    return _viewDataMap[ osg::Identifier::get(cv) ].get();
 }
 
 void ViewDependentShadowTechnique::setViewDependentData
     ( osgUtil::CullVisitor * cv, ViewData * data )
 {
     OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_viewDataMapMutex);
-    _viewDataMap[ cv ] = data;
+    _viewDataMap[ osg::Identifier::get(cv) ] = data;
 }
 
 void ViewDependentShadowTechnique::ViewData::dirty( bool flag )

src/osgWrappers/deprecated-dotosg/osgShadow/ShadowTechnique.cpp

@@ -17,7 +17,7 @@ bool ShadowTechnique_writeLocalData(const osg::Object &obj, osgDB::Output &fw);
 
 REGISTER_DOTOSGWRAPPER(ShadowTechnique_Proxy)
 (
-    new osgShadow::ShadowTechnique,
+    0,
     "ShadowTechnique",
     "Object ShadowTechnique ",
     ShadowTechnique_readLocalData,

src/osgWrappers/serializers/osgShadow/ShadowTechnique.cpp

@@ -4,7 +4,7 @@
 #include <osgDB/OutputStream>
 
 REGISTER_OBJECT_WRAPPER( osgShadow_ShadowTechnique,
-                         new osgShadow::ShadowTechnique,
+                         0,
                          osgShadow::ShadowTechnique,
                          "osg::Object osgShadow::ShadowTechnique" )
 {