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92 lines
2.8 KiB
C++
92 lines
2.8 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkEquirectangularToCubeMapTexture.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 vtkEquirectangularToCubeMapTexture
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* @brief compute a cubemap texture based on a standard equirectangular projection
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*
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* This special texture converts a 2D projected texture in equirectangular format to a 3D cubemap
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* using the GPU.
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* The generated texture can be used as input for a skybox or an environment map for PBR shading.
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*
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* @sa vtkSkybox vtkRenderer::SetEnvironmentCubeMap
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*/
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#ifndef vtkEquirectangularToCubeMapTexture_h
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#define vtkEquirectangularToCubeMapTexture_h
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#include "vtkOpenGLTexture.h"
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#include "vtkRenderingOpenGL2Module.h" // For export macro
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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 vtkEquirectangularToCubeMapTexture : public vtkOpenGLTexture
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{
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public:
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static vtkEquirectangularToCubeMapTexture* New();
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vtkTypeMacro(vtkEquirectangularToCubeMapTexture, vtkOpenGLTexture);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Get/Set the input equirectangular 2D texture.
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*/
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void SetInputTexture(vtkOpenGLTexture* texture);
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vtkGetObjectMacro(InputTexture, vtkOpenGLTexture);
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//@}
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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 each face of the output cubemap texture.
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* Default is 512.
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*/
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vtkGetMacro(CubeMapSize, unsigned int);
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vtkSetMacro(CubeMapSize, unsigned int);
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//@}
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/**
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* Release any graphics resources that are being consumed by this texture.
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* The parameter window could be used to determine which graphic
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* resources to release. Using the same texture object in multiple
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* render windows is NOT currently supported.
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*/
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void ReleaseGraphicsResources(vtkWindow*) override;
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protected:
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vtkEquirectangularToCubeMapTexture();
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~vtkEquirectangularToCubeMapTexture() override;
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unsigned int CubeMapSize = 512;
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vtkOpenGLTexture* InputTexture = nullptr;
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private:
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vtkEquirectangularToCubeMapTexture(const vtkEquirectangularToCubeMapTexture&) = delete;
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void operator=(const vtkEquirectangularToCubeMapTexture&) = delete;
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};
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#endif
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