vtkOSPRayRendererNode.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkOSPRayRendererNode.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkOSPRayRendererNode_h
#define vtkOSPRayRendererNode_h
 
#include "vtkRendererNode.h"
#include "vtkRenderingRayTracingModule.h" // For export macro
#include <vector>                         // for ivars
 
#include "RTWrapper/RTWrapper.h" // for handle types
 
#ifdef VTKOSPRAY_ENABLE_DENOISER
#include <OpenImageDenoise/oidn.hpp> // for denoiser structures
#endif
 
class vtkInformationDoubleKey;
class vtkInformationDoubleVectorKey;
class vtkInformationIntegerKey;
class vtkInformationObjectBaseKey;
class vtkInformationStringKey;
class vtkMatrix4x4;
class vtkOSPRayRendererNodeInternals;
class vtkOSPRayMaterialLibrary;
class vtkRenderer;
 
class VTKRENDERINGRAYTRACING_EXPORT vtkOSPRayRendererNode : public vtkRendererNode
{
public:
  static vtkOSPRayRendererNode* New();
  vtkTypeMacro(vtkOSPRayRendererNode, vtkRendererNode);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  virtual void Build(bool prepass) override;
 
  virtual void Render(bool prepass) override;
 
  virtual void Invalidate(bool prepass) override;
 
  virtual void WriteLayer(unsigned char* buffer, float* zbuffer, int buffx, int buffy, int layer);
 
  // state beyond rendering core...
 
  static vtkInformationIntegerKey* SAMPLES_PER_PIXEL();
 
 
  static void SetSamplesPerPixel(int, vtkRenderer* renderer);
  static int GetSamplesPerPixel(vtkRenderer* renderer);
 
  static vtkInformationDoubleKey* MAX_CONTRIBUTION();
 
 
  static void SetMaxContribution(double, vtkRenderer* renderer);
  static double GetMaxContribution(vtkRenderer* renderer);
 
  static vtkInformationIntegerKey* MAX_DEPTH();
 
 
  static void SetMaxDepth(int, vtkRenderer* renderer);
  static int GetMaxDepth(vtkRenderer* renderer);
 
  static vtkInformationDoubleKey* MIN_CONTRIBUTION();
 
 
  static void SetMinContribution(double, vtkRenderer* renderer);
  static double GetMinContribution(vtkRenderer* renderer);
 
  static vtkInformationIntegerKey* ROULETTE_DEPTH();
 
 
  static void SetRouletteDepth(int, vtkRenderer* renderer);
  static int GetRouletteDepth(vtkRenderer* renderer);
 
  static vtkInformationDoubleKey* VARIANCE_THRESHOLD();
 
 
  static void SetVarianceThreshold(double, vtkRenderer* renderer);
  static double GetVarianceThreshold(vtkRenderer* renderer);
 
 
  static vtkInformationIntegerKey* MAX_FRAMES();
  static void SetMaxFrames(int, vtkRenderer* renderer);
  static int GetMaxFrames(vtkRenderer* renderer);
 
 
  static vtkInformationStringKey* RENDERER_TYPE();
  static void SetRendererType(std::string name, vtkRenderer* renderer);
  static std::string GetRendererType(vtkRenderer* renderer);
 
  static vtkInformationIntegerKey* AMBIENT_SAMPLES();
 
  static void SetAmbientSamples(int, vtkRenderer* renderer);
  static int GetAmbientSamples(vtkRenderer* renderer);
 
  static vtkInformationIntegerKey* COMPOSITE_ON_GL();
 
  static void SetCompositeOnGL(int, vtkRenderer* renderer);
  static int GetCompositeOnGL(vtkRenderer* renderer);
 
  static vtkInformationDoubleVectorKey* NORTH_POLE();
 
  static void SetNorthPole(double*, vtkRenderer* renderer);
  static double* GetNorthPole(vtkRenderer* renderer);
 
  static vtkInformationDoubleVectorKey* EAST_POLE();
 
  static void SetEastPole(double*, vtkRenderer* renderer);
  static double* GetEastPole(vtkRenderer* renderer);
 
  static vtkInformationObjectBaseKey* MATERIAL_LIBRARY();
 
 
  static void SetMaterialLibrary(vtkOSPRayMaterialLibrary*, vtkRenderer* renderer);
  static vtkOSPRayMaterialLibrary* GetMaterialLibrary(vtkRenderer* renderer);
 
  static vtkInformationDoubleKey* VIEW_TIME();
 
  static void SetViewTime(double, vtkRenderer* renderer);
  static double GetViewTime(vtkRenderer* renderer);
 
  static vtkInformationIntegerKey* TIME_CACHE_SIZE();
 
  static void SetTimeCacheSize(int, vtkRenderer* renderer);
  static int GetTimeCacheSize(vtkRenderer* renderer);
 
  OSPModel GetOModel() { return this->OModel; }
  OSPRenderer GetORenderer() { return this->ORenderer; }
  void AddLight(OSPLight light) { this->Lights.push_back(light); }
 
  virtual void* GetBuffer() { return this->Buffer.data(); }
 
  virtual float* GetZBuffer() { return this->ZBuffer.data(); }
 
  // Get the last renderer color buffer as an OpenGL texture.
  virtual int GetColorBufferTextureGL() { return this->ColorBufferTex; }
 
  // Get the last renderer depth buffer as an OpenGL texture.
  virtual int GetDepthBufferTextureGL() { return this->DepthBufferTex; }
 
  // if you want to traverse your children in a specific order
  // or way override this method
  virtual void Traverse(int operation) override;
 
  static vtkOSPRayRendererNode* GetRendererNode(vtkViewNode*);
  vtkRenderer* GetRenderer();
  RTW::Backend* GetBackend();
 
  static vtkInformationIntegerKey* DENOISER_THRESHOLD();
 
  static void SetDenoiserThreshold(int, vtkRenderer* renderer);
  static int GetDenoiserThreshold(vtkRenderer* renderer);
 
 
  static vtkInformationIntegerKey* ENABLE_DENOISER();
  static void SetEnableDenoiser(int, vtkRenderer* renderer);
  static int GetEnableDenoiser(vtkRenderer* renderer);
 
 
  static vtkInformationIntegerKey* BACKGROUND_MODE();
  static void SetBackgroundMode(int, vtkRenderer* renderer);
  static int GetBackgroundMode(vtkRenderer* renderer);
protected:
  vtkOSPRayRendererNode();
  ~vtkOSPRayRendererNode() override;
 
  void Denoise();
 
  // internal structures
#ifdef VTKOSPRAY_ENABLE_DENOISER
  std::vector<float> Buffer;
#else
  std::vector<unsigned char> Buffer;
#endif
  std::vector<float> ZBuffer;
 
  int ColorBufferTex;
  int DepthBufferTex;
 
  OSPModel OModel;
  OSPRenderer ORenderer;
  OSPFrameBuffer OFrameBuffer;
  OSPData OLightArray;
  int ImageX, ImageY;
  std::vector<OSPLight> Lights;
  int NumActors;
  bool ComputeDepth;
  bool Accumulate;
  bool CompositeOnGL;
  std::vector<float> ODepthBuffer;
  int AccumulateCount;
  int ActorCount;
  vtkMTimeType AccumulateTime;
  vtkMatrix4x4* AccumulateMatrix;
  vtkOSPRayRendererNodeInternals* Internal;
  std::string PreviousType;
 
#ifdef VTKOSPRAY_ENABLE_DENOISER
  oidn::DeviceRef DenoiserDevice;
  oidn::FilterRef DenoiserFilter;
#endif
  bool DenoiserDirty{ true };
  std::vector<osp::vec4f> ColorBuffer;
  std::vector<osp::vec3f> NormalBuffer;
  std::vector<osp::vec3f> AlbedoBuffer;
  std::vector<osp::vec4f> DenoisedBuffer;
 
private:
  vtkOSPRayRendererNode(const vtkOSPRayRendererNode&) = delete;
  void operator=(const vtkOSPRayRendererNode&) = delete;
};
 
#endif