DtIndirectCullProgramCache.h

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


#pragma once
#include <vrvOsg/vrvOsg.h>
#include <vrvOsg/DtCullShaderConfig.h>

#include <vrvUtil/DtVirtualBaseClass.h>
#include <vrvUtil/DtSignalConnectionManager.h>
#include <vrvMath/DtVector2.h>

#include <unordered_map>

namespace makVrv
{
   class DtDe;
   class DtIndirectCullProgram;

   class DT_DLL_VRVOSG DtIndirectCullProgramCache : public DtVirtualBaseClass
   {
   public:
      
   public:
      static DtIndirectCullProgramCache& instance(DtDe& de);

      virtual ~DtIndirectCullProgramCache();

      DtIndirectCullProgramCache() = delete;
      DtIndirectCullProgramCache& operator=(const DtIndirectCullProgramCache& rhs) = delete;
      DtIndirectCullProgramCache(const DtIndirectCullProgramCache& rhs) = delete;
   protected:
      DtIndirectCullProgramCache(DtDe& de);

      static void registerInstance(DtIndirectCullProgramCache* manager, DtDe& de);

   public:
      virtual DtIndirectCullProgram* getOrCreate(bool& created, const DtCullShaderConfig& cullShaderConfig);

      virtual DtIndirectCullProgram* removeEntry(const DtCullShaderConfig& cullShaderConfig);

   protected:
      DtDe& myDe;

      static const std::string theClassName;

      std::unordered_map< DtCullShaderConfig::KeyType, DtIndirectCullProgram* > myHashToIndirectCullProgram;
   };

}