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107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
3 weeks ago
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/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkSSAAPass.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 vtkSSAAPass
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* @brief Implement Screen Space Anti Aliasing pass.
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*
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* Render to a larger image and then sample down
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*
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* This pass expects an initialized depth buffer and color buffer.
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* Initialized buffers means they have been cleared with farest z-value and
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* background color/gradient/transparent color.
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*
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* The delegate is used once.
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*
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* Its delegate is usually set to a vtkCameraPass or to a post-processing pass.
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*
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* @par Implementation:
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* As the filter is separable, it first blurs the image horizontally and then
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* vertically. This reduces the number of texture samples taken.
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*
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* @sa
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* vtkRenderPass
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*/
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#ifndef vtkSSAAPass_h
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#define vtkSSAAPass_h
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#include "vtkRenderPass.h"
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#include "vtkRenderingOpenGL2Module.h" // For export macro
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class vtkOpenGLFramebufferObject;
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class vtkOpenGLHelper;
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class vtkTextureObject;
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class VTKRENDERINGOPENGL2_EXPORT vtkSSAAPass : public vtkRenderPass
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{
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public:
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static vtkSSAAPass* New();
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vtkTypeMacro(vtkSSAAPass, vtkRenderPass);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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/**
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* Perform rendering according to a render state \p s.
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* \pre s_exists: s!=0
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*/
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void Render(const vtkRenderState* s) override;
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/**
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* Release graphics resources and ask components to release their own
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* resources.
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* \pre w_exists: w!=0
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*/
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void ReleaseGraphicsResources(vtkWindow* w) override;
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//@{
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/**
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* Delegate for rendering the image to be processed.
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* If it is NULL, nothing will be rendered and a warning will be emitted.
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* It is usually set to a vtkCameraPass or to a post-processing pass.
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* Initial value is a NULL pointer.
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*/
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vtkGetObjectMacro(DelegatePass, vtkRenderPass);
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virtual void SetDelegatePass(vtkRenderPass* delegatePass);
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//@}
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protected:
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/**
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* Default constructor. DelegatePass is set to NULL.
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*/
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vtkSSAAPass();
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/**
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* Destructor.
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*/
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~vtkSSAAPass() override;
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/**
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* Graphics resources.
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*/
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vtkOpenGLFramebufferObject* FrameBufferObject;
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vtkTextureObject* Pass1; // render target for the scene
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vtkTextureObject* Pass2; // render target for the horizontal pass
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// Structures for the various cell types we render.
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vtkOpenGLHelper* SSAAProgram;
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vtkRenderPass* DelegatePass;
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private:
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vtkSSAAPass(const vtkSSAAPass&) = delete;
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void operator=(const vtkSSAAPass&) = delete;
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};
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#endif
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