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vtkSobelGradientMagnitudePass.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkSobelGradientMagnitudePass.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
63 #ifndef vtkSobelGradientMagnitudePass_h
64 #define vtkSobelGradientMagnitudePass_h
65 
66 #include "vtkRenderingOpenGL2Module.h" // For export macro
67 #include "vtkImageProcessingPass.h"
68 
69 class vtkDepthPeelingPassLayerList; // Pimpl
71 class vtkOpenGLHelper;
73 class vtkTextureObject;
74 
75 
76 class VTKRENDERINGOPENGL2_EXPORT vtkSobelGradientMagnitudePass : public vtkImageProcessingPass
77 {
78 public:
81  void PrintSelf(ostream& os, vtkIndent indent) override;
82 
87  void Render(const vtkRenderState *s) override;
88 
94  void ReleaseGraphicsResources(vtkWindow *w) override;
95 
96  protected:
101 
105  ~vtkSobelGradientMagnitudePass() override;
106 
111  vtkTextureObject *Pass1; // render target for the scene
112  vtkTextureObject *Gx1; // render target 0 for the first shader
113  vtkTextureObject *Gy1; // render target 1 for the first shader
114 
115  // Structures for the various cell types we render.
116  vtkOpenGLHelper *Program1; // shader to compute Gx1 and Gy1
117  vtkOpenGLHelper *Program2; // shader to compute |G| from Gx1 and Gy1
118 
119  private:
121  void operator=(const vtkSobelGradientMagnitudePass&) = delete;
122 };
123 
124 #endif
OpenGL rendering window.
void ReleaseGraphicsResources(vtkWindow *w) override
Release graphics resources and ask components to release their own resources.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
Convenient class for post-processing passes.
window superclass for vtkRenderWindow
Definition: vtkWindow.h:37
Context in which a vtkRenderPass will render.
Implement a post-processing edge detection with a Sobel gradient magnitude render pass...
a simple class to control print indentation
Definition: vtkIndent.h:39
Internal class which encapsulates OpenGL FramebufferObject.
vtkOpenGLFramebufferObject * FrameBufferObject
Graphics resources.
abstracts an OpenGL texture object.
virtual void Render(const vtkRenderState *s)=0
Perform rendering according to a render state s.
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on...