DtDiGuyOsgGraphicsMesh.h

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


#pragma once

/*********************************************************************
 **
 *2  diguyOsgGraphicsMesh
 **
 */

#include <diguyGraphicsMesh.h>

#include <osg/Drawable>

class diguyGraphicsVertexData;

namespace makVrv
{


   class diguyOsgGraphicsMesh : public diguyGraphicsMesh
   {

   public:

      diguyOsgGraphicsMesh(void* internal_data);

      virtual void build();
      virtual void unbuild();

      osg::PrimitiveSet* get_primitiveSet() { return m_primitiveSet; }
      int get_num_drawables();
      osg::Drawable* getDrawable(int drawable_index);

   protected:

      osg::ref_ptr<osg::PrimitiveSet> m_primitiveSet;
      std::vector<osg::ref_ptr<osg::Drawable> > m_drawables;
      std::vector<bool> m_has_graphics_state_set;

      void attach_state_set_to_drawable(int drawable_index);
   };



   class diguyOsgSSBODrawCallback : public osg::Drawable::DrawCallback
   {
   public:
      diguyOsgSSBODrawCallback();
      diguyOsgSSBODrawCallback(diguyOsgGraphicsMesh* mesh);

      virtual ~diguyOsgSSBODrawCallback();

      diguyOsgSSBODrawCallback(const diguyOsgSSBODrawCallback&, const osg::CopyOp&);

      META_Object(makVrv, diguyOsgSSBODrawCallback);

      virtual void drawImplementation(osg::RenderInfo& renderInfo, const osg::Drawable* drawable) const override;

      virtual void releaseGLObjects(osg::State* state) const override;

   protected:
      diguyOsgGraphicsMesh* myMesh;
      mutable GLuint myBlendShapeSSBOobject;
   };


}

diguyGraphicsMesh* diguyOsgGraphicsMesh_create_func(void* internal_data);