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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 =========================================================================*/
60 #ifndef vtkSobelGradientMagnitudePass_h
61 #define vtkSobelGradientMagnitudePass_h
62 
63 #include "vtkRenderingOpenGL2Module.h" // For export macro
64 #include "vtkImageProcessingPass.h"
65 
66 class vtkDepthPeelingPassLayerList; // Pimpl
68 class vtkOpenGLHelper;
70 class vtkTextureObject;
71 
72 
73 class VTKRENDERINGOPENGL2_EXPORT vtkSobelGradientMagnitudePass : public vtkImageProcessingPass
74 {
75 public:
78  void PrintSelf(ostream& os, vtkIndent indent);
79 
84  virtual void Render(const vtkRenderState *s);
85 
92 
93  protected:
98 
103 
107  vtkFrameBufferObject *FrameBufferObject;
108  vtkTextureObject *Pass1; // render target for the scene
109  vtkTextureObject *Gx1; // render target 0 for the first shader
110  vtkTextureObject *Gy1; // render target 1 for the first shader
111 
112  // Structures for the various cell types we render.
113  vtkOpenGLHelper *Program1; // shader to compute Gx1 and Gy1
114  vtkOpenGLHelper *Program2; // shader to compute |G| from Gx1 and Gy1
115 
116  private:
118  void operator=(const vtkSobelGradientMagnitudePass&) VTK_DELETE_FUNCTION;
119 };
120 
121 #endif
vtkFrameBufferObject
internal class which encapsulates OpenGL frame buffer object. Not to be used directly.
Definition: vtkFrameBufferObject.h:46
vtkImageProcessingPass.h
vtkImageProcessingPass::ReleaseGraphicsResources
void ReleaseGraphicsResources(vtkWindow *w)
Release graphics resources and ask components to release their own resources.
vtkObject::New
static vtkObject * New()
Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
vtkRenderPass::Render
virtual void Render(const vtkRenderState *s)=0
Perform rendering according to a render state s.
vtkSobelGradientMagnitudePass::Program2
vtkOpenGLHelper * Program2
Definition: vtkSobelGradientMagnitudePass.h:114
vtkWindow
window superclass for vtkRenderWindow
Definition: vtkWindow.h:34
vtkOpenGLHelper
Definition: vtkOpenGLHelper.h:30
vtkIndent
a simple class to control print indentation
Definition: vtkIndent.h:39
vtkTextureObject
abstracts an OpenGL texture object.
Definition: vtkTextureObject.h:43
vtkSobelGradientMagnitudePass
Implement a post-processing edge detection with a Sobel gradient magnitude render pass.
Definition: vtkSobelGradientMagnitudePass.h:76
vtkImageProcessingPass::PrintSelf
void PrintSelf(ostream &os, vtkIndent indent)
Methods invoked by print to print information about the object including superclasses.
vtkSobelGradientMagnitudePass::Program1
vtkOpenGLHelper * Program1
Definition: vtkSobelGradientMagnitudePass.h:113
vtkOpenGLRenderWindow
OpenGL rendering window.
Definition: vtkOpenGLRenderWindow.h:41
vtkRenderState
Context in which a vtkRenderPass will render.
Definition: vtkRenderState.h:40
vtkImageProcessingPass
Convenient class for post-processing passes. render pass.
Definition: vtkImageProcessingPass.h:40