vtkPBRIrradianceTexture.h

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

#include "vtkOpenGLTexture.h"
#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkWrappingHints.h"          // For VTK_MARSHALAUTO

VTK_ABI_NAMESPACE_BEGIN
class vtkOpenGLFramebufferObject;
class vtkOpenGLRenderWindow;
class vtkOpenGLTexture;
class vtkRenderWindow;

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


  void SetInputTexture(vtkOpenGLTexture* texture);
  vtkGetObjectMacro(InputTexture, vtkOpenGLTexture);

  void Load(vtkRenderer*) override;

  void Render(vtkRenderer* ren) override { this->Load(ren); }


  vtkGetMacro(IrradianceSize, unsigned int);
  vtkSetMacro(IrradianceSize, unsigned int);


  vtkGetMacro(IrradianceStep, float);
  vtkSetMacro(IrradianceStep, float);


  vtkGetMacro(ConvertToLinear, bool);
  vtkSetMacro(ConvertToLinear, bool);
  vtkBooleanMacro(ConvertToLinear, bool);

  void ReleaseGraphicsResources(vtkWindow*) override;

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

  float IrradianceStep = 0.04908738521; // pi / 64
  unsigned int IrradianceSize = 256;
  vtkOpenGLTexture* InputTexture = nullptr;
  bool ConvertToLinear = false;

private:
  vtkPBRIrradianceTexture(const vtkPBRIrradianceTexture&) = delete;
  void operator=(const vtkPBRIrradianceTexture&) = delete;
};

VTK_ABI_NAMESPACE_END
#endif