DtBindingManager.h

Go to the documentation of this file.

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


#pragma once

#include <vrvUtil/DtVirtualBaseClass.h>

#include <vrvOsg/vrvOsg.h>

#include <vrvGraphicsUtils/DtBufferType.h>

#include <string>
#include <map>
#include <utility>

typedef unsigned int GLuint;
typedef unsigned int GLenum;
typedef int GLint;

namespace makVrv
{
   class DtDe;

   class DT_DLL_VRVOSG DtBindingManager : public DtVirtualBaseClass
   {
   public:
      static DtBindingManager& instance(DtDe&);
   protected:
      DtBindingManager();

      virtual ~DtBindingManager();
   private:
      DtBindingManager(const DtBindingManager& rhs);
      DtBindingManager& operator=(const DtBindingManager& rhs);
   public:

      virtual GLuint binding(const std::string& name) const;

      virtual GLuint binding(const std::string& name, int index) const;

      virtual void bindBlocks(GLuint programId) const;

      virtual std::string name(const std::string& name) const;

      virtual std::string name(const std::string& name, int index) const;

   public:
      static const int theLightBlockBase = 6;  // base binding for light UBO data
      static const int theLightBlockCount = 5; // number of light UBOs

      // Well-known names of interfaces blocks.  These match names in the shaders.
      // This avoids multiple parts of the code having an independent idea of the
      // block names.  These can be used with binding() and setBinding().
      static const char* osgMaterialUniformBlock;
      static const char* osgAlphaThresholdBlock;
      static const char* osgTransformStackBlock;
      static const char* vrvPerChannelUniformBlock;
      static const char* vrvLightDataBlock;
      static const char* vrvTileLightIndexList;

   protected:
      virtual std::string indexedName(const std::string& name, int index) const;

      virtual void initializeBlockBindings();

      virtual void setBinding(const std::string& name, DtBufferType bufferType,
         GLuint binding);

      virtual void setBinding(const std::string& name, DtBufferType bufferType,
         int index, GLuint binding);

   protected:
      // This type must appear before the use in public:, below.
      // The pair is the DtBufferType, and the binding.
      typedef std::map<std::string, std::pair<DtBufferType, GLuint> > BindingMap;
      BindingMap bindingMap;
   };

} // namespace makVrv