DtVirtualProgramCache.h

Go to the documentation of this file.

/******************************************************************************
** Copyright (c) 2022 VT-MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvUtil/DtVirtualBaseClassCreator.h>
#include <vrvUtil/DtSignalConnectionManager.h>

#include <osg/ref_ptr>

#include <boost/thread/mutex.hpp>

#include <string>
#include <map>

namespace osg
{
   class StateSet;
}
namespace osgEarth
{
   class VirtualProgram;
}

namespace makVrv
{
   class DtDe;

   class DT_DLL_VRVOSG DtVirtualProgramCache : public DtVirtualBaseClass
   {
   public:
      virtual ~DtVirtualProgramCache();

      static DtVirtualProgramCache& instance(DtDe& de);

   protected:
      DtVirtualProgramCache(DtDe& de);

   private:
      DtVirtualProgramCache() = delete;

      DtVirtualProgramCache(const DtVirtualProgramCache& rhs) = delete;

      DtVirtualProgramCache &operator=(const DtVirtualProgramCache& rhs) = delete;

   public:
      virtual bool findAndSetOn(const std::string& strHash, osg::StateSet* stateSet);

      virtual void cache(const std::string& strHash, osgEarth::VirtualProgram* virtualProgram);

   protected:
      virtual void slot_reloadShaders(void);

      virtual void clear();
      
   protected:
      typedef osg::ref_ptr<osgEarth::VirtualProgram> VirtualProgramRef;
      typedef std::map<std::string, VirtualProgramRef> StringVpMap;

      StringVpMap myMapHashesToVirtualPrograms;

      DtDe& myDe;

      boost::mutex myMapMutex;

      DtSignalConnectionManager myConnections;
   };

}