DtIndirectEffectTexturesTemplate.h

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/******************************************************************************
** Copyright (c) 2020 VT-MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvGraphicsUtils/DtCommonTypes.h>

#include <iostream>

namespace makVrv
{
   // Example: a template with types registered in order with these types, will have the corresponding internal index:
   // ETT_NORMAL_MAP       -> 0
   // ETT_AO_MAP           -> 1
   // ETT_SPECULAR_MAP     -> 2
   // ETT_LIGHT_MAP        -> 3
   // even though the corresponding enums in DtOsgEffectTextureController::EffectTextureType are not necessarily that index/in order
   // This enforced ordering ensures that the textures referred to in the indirect rendering engine code/shaders will always be found at those indices
   // non virtual container class which is basically just a bi directional map of ints to ints.
   class DT_DLL_VRVOSG DtIndirectEffectTexturesTemplate
   {
   public:
      DtIndirectEffectTexturesTemplate();

      ~DtIndirectEffectTexturesTemplate();

   public:
      void registerType(int type);

      bool hasType(int type) const;

      int numEffectTextures(void) const;

      int indexForType(int type) const;

      int typeForIndex(int index) const;

      bool operator==(const DtIndirectEffectTexturesTemplate& rhs) const;

      bool operator!=(const DtIndirectEffectTexturesTemplate& rhs) const;

      friend std::ostream& operator << (std::ostream& o, const DtIndirectEffectTexturesTemplate& rhs);
   protected:
      MapIntToInt myTypeToIndex;
      MapIntToInt myIndexToType;
      std::string myHashStr;
   };
}