include/ImageUnitStack.h

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#ifndef __IMAGE_UNIT_STACK_H__
#define __IMAGE_UNIT_STACK_H__

//---------------------------------------------------------------------
//---------------------------------------------------------------------

#include <vector>
#include "GLUtil.h"

class ImageUnit
{
public :
    int  m_samplerIndex;
    bool m_isAvailable;

  inline ImageUnit(
                    int  _samplerIndex,
                    bool _isAvailable
                  ) :
                  m_samplerIndex(_samplerIndex),
                  m_isAvailable(_isAvailable){;}
};

class ImageUnitStack
{
public:
  ImageUnitStack();

  ~ImageUnitStack();

  int getNextAvailableUnit();

  void freeUnit(
                int _unitIndex
               );

private:
  std::vector<ImageUnit*> m_stack;
};

#endif // __IMAGE_UNIT_STACK_H__