DtIndirectModelSubGeometry.h

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/*****************************************************************************
 * Copyright (c) 2023 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvOsg/DtIndirectGeometryTextures.h>
#include <vrvOsg/DtIndirectBindlessVertexFormat.h>

#define CPU_SIDE_COMPILATION 1
#include <../data/shaders/indirect/DrawElementsIndirectCommand.h>

#include <osg/Matrix>
#include <osg/ref_ptr>

#include <string>
#include <vector>

namespace osg
{
   class State;
   class Geometry;
}

namespace makVrv
{
   class DtGlDeleteObjectManager;

   class DtGlBuffer;

   struct DtIndirectModelSubGeoProps
   {
      uint64_t mySizeVertices = 0;
      uint64_t mySizeAdditionalCoordinates = 0;
      uint64_t mySizeIndices = 0;
      int myNumVertices = 0;
      int myNumIndices = 0;
      int myMaxCoords = 0;
   };

   class DtIndirectModelSubGeometry
   {
   public:
      struct VertexRange
      {
         int myStartVertex = -1;
         int myEndVertex = -1;
      };

      struct IndexRange
      {
         int myPrimitiveSetIndex = -1;
         int myStartIndex = -1;
         int myEndIndex = -1;
      };

   public:
      DtIndirectModelSubGeometry(DtDe& de);

      DtIndirectModelSubGeometry(DtDe& de, const VertexRange& vertexRange, const IndexRange& indexRange);

      virtual ~DtIndirectModelSubGeometry();

      DtIndirectModelSubGeometry(const DtIndirectModelSubGeometry& rhs) = delete;

      DtIndirectModelSubGeometry& operator=(const DtIndirectModelSubGeometry& rhs) = delete;

      DtIndirectModelSubGeometry() = delete;
   public:
      virtual void fillFrom(const osg::Geometry* srcGeometry, const osg::Matrix& matrix, const DtIndirectGeometryTextures& texturesForThisGeometry);

      virtual void copyData(
           DtIndirectModelSubGeoProps& subGeoSizes
         , std::vector<uint8_t>& vertexBuffer, uint64_t vertexBufferOffset
         , std::vector<uint8_t>& indexBuffer, uint64_t indexBufferOffset);
         
      virtual int maxCoords(void) const;

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

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

      virtual const std::vector<DtIndirectBindlessVertexFormat>& vertices(void) const;

      virtual const std::vector<int>& indices(void) const;

      virtual const std::vector< std::vector<Vector2_32> >& textureCoordinates(void) const;

   protected:

      DtDe& myDe;

      std::string myName;

      std::vector<int> myIndices;

      std::vector<DtIndirectBindlessVertexFormat> myVertices;

      std::vector< std::vector<Vector2_32> > myTextureCoordinates;

      VertexRange myVertexRange;

      IndexRange myIndexRange;
   };
}