Dt3dLinesCameraRenderer.h

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


#pragma once

#include <vrvGraphics/vrvGraphics.h>

#include <vrvUtil/DtVirtualBaseClassCreator.h>

#include <matrix/vlMath.h>
#include <matrix/vlVector.h>

namespace makVrv
{
   class DtDe;
   class Dt3dLinesStagingBuffer;
   class DtBufferObject;
   class DtGlBuffer;
   class DtGlProgram;
   class Dt3dLinesCameraRenderer;

   typedef DtVirtualBaseClassCreator<Dt3dLinesCameraRenderer> Dt3dLinesCameraRendererCreator;

   template <>
   inline const char* creatorTypeName<Dt3dLinesCameraRenderer>(void) { return "Dt3dLinesCameraRendererCreator"; }

   class DT_DLL_VRVGRAPHICS Dt3dLinesCameraRenderer
   {
      friend Dt3dLinesCameraRendererCreator;

   public:

      virtual ~Dt3dLinesCameraRenderer();

      Dt3dLinesCameraRenderer() = delete;

      Dt3dLinesCameraRenderer(
         const Dt3dLinesCameraRenderer &other) = delete;

      Dt3dLinesCameraRenderer &operator=(
         const Dt3dLinesCameraRenderer &other) = delete;

   public:

      virtual void releaseResources();

      virtual void reloadShaders();

      void draw(const DtVector& cameraPos,
         const float* viewMat, const float* projMat,
         const std::vector<Dt3dLinesStagingBuffer*>& lineBuffers,
         float hdrOutputScale);

   protected:

      Dt3dLinesCameraRenderer(DtDe& de);

      virtual bool initializeShaders();

   protected:

      DtDe& myDe;

      struct FloatBuffer
      {
         float* myData = nullptr;
         size_t mySize = 0;
      };

      DtBufferObject* myBufferObject;

      size_t myPointCountMax;
      FloatBuffer myDynamicBuffer;

      bool myEnabled;

      DtGlProgram* myGlProgram;
      int myUnfmLocViewMatrix;
      int myUnfmLocProjectionMatrix;
      int myUnfmLocHdrOutputScale;
   };
}