vtkHexagonalBokehBlurPass.h

Go to the documentation of this file.

// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-FileCopyrightText: Copyright 2025 F3D-APP Foundation
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkHexagonalBokehBlurPass_h
#define vtkHexagonalBokehBlurPass_h

#include "vtkImageProcessingPass.h"
#include "vtkOpenGLQuadHelper.h"
#include "vtkSmartPointer.h"

class vtkTextureObject;
class vtkOpenGLFrameBuffer;

VTK_ABI_NAMESPACE_BEGIN

class VTKRENDERINGOPENGL2_EXPORT VTK_MARSHALAUTO vtkHexagonalBokehBlurPass
  : public vtkImageProcessingPass
{
public:
  static vtkHexagonalBokehBlurPass* New();
  vtkTypeMacro(vtkHexagonalBokehBlurPass, vtkImageProcessingPass);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Render(const vtkRenderState* s) override;

  void ReleaseGraphicsResources(vtkWindow* w) override;


  vtkGetMacro(CircleOfConfusionRadius, float);
  vtkSetMacro(CircleOfConfusionRadius, float);

protected:
  vtkHexagonalBokehBlurPass() = default;
  ~vtkHexagonalBokehBlurPass() override = default;

private:
  vtkHexagonalBokehBlurPass(const vtkHexagonalBokehBlurPass&) = delete;
  void operator=(const vtkHexagonalBokehBlurPass&) = delete;

  void InitializeGraphicsResources(vtkOpenGLRenderWindow* renderWindow, int width, int height);

  void RenderDelegate(const vtkRenderState* s, int width, int height);

  void RenderDirectionalBlur(vtkOpenGLRenderWindow* renWin, int width, int height, float coc);

  void RenderRhomboidBlur(vtkOpenGLRenderWindow* renWin, int width, int height, float coc);

  float CircleOfConfusionRadius = 20.0f;

  vtkSmartPointer<vtkOpenGLFramebufferObject> FrameBufferObject;
  vtkSmartPointer<vtkTextureObject> VerticalBlurTexture;
  vtkSmartPointer<vtkTextureObject> DiagonalBlurTexture;
  vtkSmartPointer<vtkTextureObject> BackgroundTexture;

  std::unique_ptr<vtkOpenGLQuadHelper> BlurQuadHelper = nullptr;
  std::unique_ptr<vtkOpenGLQuadHelper> RhomboidQuadHelper = nullptr;
};

VTK_ABI_NAMESPACE_END

#endif // vtkHexagonalBokehBlurPass_h