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83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPBRLUTTexture.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkPBRLUTTexture
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* @brief precompute BRDF look-up table texture used in physically based rendering
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*
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* This texture is a 2D texture which precompute Fresnel response scale (red) and bias (green)
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* based on roughness (x) and angle between light and normal (y).
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*/
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#ifndef vtkPBRLUTTexture_h
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#define vtkPBRLUTTexture_h
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#include "vtkOpenGLTexture.h"
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#include "vtkRenderingOpenGL2Module.h" // For export macro
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#include "vtkSmartPointer.h" // For vtkSmartPointer
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class vtkOpenGLFramebufferObject;
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class vtkOpenGLRenderWindow;
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class vtkOpenGLTexture;
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class vtkRenderWindow;
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class VTKRENDERINGOPENGL2_EXPORT vtkPBRLUTTexture : public vtkOpenGLTexture
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{
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public:
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static vtkPBRLUTTexture* New();
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vtkTypeMacro(vtkPBRLUTTexture, vtkOpenGLTexture);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Implement base class method.
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*/
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void Load(vtkRenderer*) override;
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/**
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* Implement base class method.
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*/
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void Render(vtkRenderer* ren) override { this->Load(ren); }
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//@{
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/**
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* Set/Get size of texture.
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* Default is 1024.
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*/
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vtkGetMacro(LUTSize, unsigned int);
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vtkSetMacro(LUTSize, unsigned int);
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//@}
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//@{
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/**
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* Set/Get the number of samples used during Monte-Carlo integration.
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* Default is 512.
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*/
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vtkGetMacro(LUTSamples, unsigned int);
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vtkSetMacro(LUTSamples, unsigned int);
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//@}
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protected:
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vtkPBRLUTTexture() = default;
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~vtkPBRLUTTexture() override = default;
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unsigned int LUTSize = 512;
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unsigned int LUTSamples = 1024;
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private:
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vtkPBRLUTTexture(const vtkPBRLUTTexture&) = delete;
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void operator=(const vtkPBRLUTTexture&) = delete;
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};
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#endif
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