VTK  9.3.1
vtkSobelGradientMagnitudePass.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
51 #ifndef vtkSobelGradientMagnitudePass_h
52 #define vtkSobelGradientMagnitudePass_h
53 
54 #include "vtkImageProcessingPass.h"
55 #include "vtkRenderingOpenGL2Module.h" // For export macro
56 
57 VTK_ABI_NAMESPACE_BEGIN
58 class vtkDepthPeelingPassLayerList; // Pimpl
60 class vtkOpenGLHelper;
62 class vtkTextureObject;
63 
64 class VTKRENDERINGOPENGL2_EXPORT vtkSobelGradientMagnitudePass : public vtkImageProcessingPass
65 {
66 public:
69  void PrintSelf(ostream& os, vtkIndent indent) override;
70 
75  void Render(const vtkRenderState* s) override;
76 
82  void ReleaseGraphicsResources(vtkWindow* w) override;
83 
84 protected:
89 
94 
99  vtkTextureObject* Pass1; // render target for the scene
100  vtkTextureObject* Gx1; // render target 0 for the first shader
101  vtkTextureObject* Gy1; // render target 1 for the first shader
102 
103  // Structures for the various cell types we render.
104  vtkOpenGLHelper* Program1; // shader to compute Gx1 and Gy1
105  vtkOpenGLHelper* Program2; // shader to compute |G| from Gx1 and Gy1
106 
107 private:
109  void operator=(const vtkSobelGradientMagnitudePass&) = delete;
110 };
111 
112 VTK_ABI_NAMESPACE_END
113 #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:27
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:28
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...