vtkAnariPass.h

Go to the documentation of this file.

// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
 
#ifndef vtkAnariPass_h
#define vtkAnariPass_h
 
#include "vtkNew.h" // For vtkNew
#include "vtkRenderPass.h"
#include "vtkRenderingAnariOpenGLModule.h" // For export macro
 
#include "vtkAnariDevice.h"     // For vtkAnariDevice
#include "vtkAnariRenderer.h"   // For vtkAnariRenderer
#include "vtkAnariSceneGraph.h" // For vtkAnariSceneGraph
 
VTK_ABI_NAMESPACE_BEGIN
 
// Forward declarations
class vtkAnariViewNodeFactory;
class vtkCameraPass;
class vtkOpenGLFramebufferObject;
class vtkOpenGLQuadHelper;
class vtkOpenGLRenderWindow;
class vtkTextureObject;
class vtkViewNodeFactory;
 
class VTKRENDERINGANARIOPENGL_EXPORT vtkAnariPass : public vtkRenderPass
{
public:
  static vtkAnariPass* New();
  vtkTypeMacro(vtkAnariPass, vtkRenderPass);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Render(const vtkRenderState* s) override;


  vtkGetObjectMacro(SceneGraph, vtkAnariSceneGraph);

  vtkAnariDevice* GetAnariDevice();

  vtkAnariRenderer* GetAnariRenderer();

  virtual vtkViewNodeFactory* GetViewNodeFactory();
 
private:
  struct vtkFrameInformation
  {
    vtkFrameInformation() = default;
 
    int ViewportX = 0;
    int ViewportY = 0;
    int ViewportWidth = 0;
    int ViewportHeight = 0;
 
    double TileViewport[4] = { 0.0, 0.0, 1.0, 1.0 };
    int TileScale[2] = { 1, 1 };
  };
 
  vtkAnariPass(const vtkAnariPass&) = delete;
  void operator=(const vtkAnariPass&) = delete;
 
  vtkAnariPass();
  ~vtkAnariPass() override = default;

  void SetSceneGraph(vtkAnariSceneGraph*);
 
  void RenderAnariFrame(vtkRenderer* renderer, const vtkFrameInformation& frameInfo);
 
  void BlitAnariFrameToOpenGLFrame(vtkRenderer* renderer, const vtkFrameInformation& frameInfo);
  void SetupFrame(vtkOpenGLRenderWindow* openGLRenderWindow, vtkRenderer* renderer,
    const anari::Extensions& extensions);
 
  vtkSmartPointer<vtkAnariSceneGraph> SceneGraph;
  vtkNew<vtkAnariDevice> Device;
  vtkNew<vtkAnariRenderer> Renderer;
  vtkNew<vtkAnariViewNodeFactory> Factory;
 
  // ANARI frame blit to OpenGL
  std::unique_ptr<vtkOpenGLQuadHelper> OpenGLQuadHelper;
  vtkNew<vtkTextureObject> ColorTexture;
  vtkNew<vtkTextureObject> DepthTexture;
  vtkNew<vtkTextureObject> SharedColorTexture;
  vtkNew<vtkTextureObject> SharedDepthTexture;
};
 
VTK_ABI_NAMESPACE_END
#endif