include/makOsgShadowFX/DtShadowTechnique.h

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/******************************************************************************
** Copyright (c) 2008 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile: shadowTechnique.h,v $ $Revision: 1.6 $ $State: Exp $
******************************************************************************/


#ifndef ShadowTechnique_H_
#define ShadowTechnique_H_

#include <vrvOsg/vrvOsg.h>
#include <osgFX/Technique>
#include <makOsgShadowFX/DtShadowMapImpl.h>

namespace makOsgShadowFX
{

enum DtShadowImplEnum {SIMPLE, MINIMAL, LISMP, VOLUME};

class DT_DLL_VRVOSG DtShadowFXTechnique : public osgFX::Technique
{
public:
   DtShadowFXTechnique(DtShadowImplEnum tech, int quality, int distance);

   META_Technique("ShadowTechnique", "Adds shadows To a scene");

   void getRequiredExtensions(std::vector<std::string>&  extensions) const;

   void traverse(osg::NodeVisitor& nv, osgFX::Effect* fx);

protected:
   ~DtShadowFXTechnique();

   void define_passes();

   // debug methods
   osg::ref_ptr<osg::Camera> makeDebugCockpit();

   osg::ref_ptr<makOsgShadowFX::DtShadowMap> myShadowMapGen;
   osg::ref_ptr<osg::Texture2D> myShadowMap;

   // forward declare, interface and implementation provided in DtShadowMap.cpp
   class DrawableDrawWithDepthShadowComparisonOffCallback;

   osg::ref_ptr<osg::Camera> myDebugCamera;
};

} //makShadowFX::

#endif