VTK  9.0.3
vtkSSAOPass.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkSSAOPass.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 =========================================================================*/
29 #ifndef vtkSSAOPass_h
30 #define vtkSSAOPass_h
31 
32 #include "vtkImageProcessingPass.h"
33 #include "vtkRenderingOpenGL2Module.h" // For export macro
34 
35 #include <vector> // For vector
36 
37 class vtkMatrix4x4;
40 class vtkTextureObject;
41 
42 class VTKRENDERINGOPENGL2_EXPORT vtkSSAOPass : public vtkImageProcessingPass
43 {
44 public:
45  static vtkSSAOPass* New();
47  void PrintSelf(ostream& os, vtkIndent indent) override;
48 
52  void Render(const vtkRenderState* s) override;
53 
58 
62  bool PreReplaceShaderValues(std::string& vertexShader, std::string& geometryShader,
63  std::string& fragmentShader, vtkAbstractMapper* mapper, vtkProp* prop) override;
64 
68  bool PostReplaceShaderValues(std::string& vertexShader, std::string& geometryShader,
69  std::string& fragmentShader, vtkAbstractMapper* mapper, vtkProp* prop) override;
70 
75  vtkOpenGLVertexArrayObject* VAO = nullptr) override;
76 
78 
82  vtkGetMacro(Radius, double);
83  vtkSetMacro(Radius, double);
85 
87 
91  vtkGetMacro(KernelSize, unsigned int);
92  vtkSetClampMacro(KernelSize, unsigned int, 1, 1000);
94 
96 
100  vtkGetMacro(Bias, double);
101  vtkSetMacro(Bias, double);
103 
105 
110  vtkGetMacro(Blur, bool);
111  vtkSetMacro(Blur, bool);
112  vtkBooleanMacro(Blur, bool);
114 
115 protected:
116  vtkSSAOPass() = default;
117  ~vtkSSAOPass() override = default;
118 
121 
122  void RenderDelegate(const vtkRenderState* s, int w, int h);
123  void RenderSSAO(vtkOpenGLRenderWindow* renWin, vtkMatrix4x4* projection, int w, int h);
125 
126  vtkTextureObject* ColorTexture = nullptr;
127  vtkTextureObject* PositionTexture = nullptr;
128  vtkTextureObject* NormalTexture = nullptr;
129  vtkTextureObject* SSAOTexture = nullptr;
130  vtkTextureObject* DepthTexture = nullptr;
131 
132  vtkOpenGLFramebufferObject* FrameBufferObject = nullptr;
133 
134  vtkOpenGLQuadHelper* SSAOQuadHelper = nullptr;
135  vtkOpenGLQuadHelper* CombineQuadHelper = nullptr;
136 
137  std::vector<float> Kernel;
138  unsigned int KernelSize = 32;
139  double Radius = 0.5;
140  double Bias = 0.01;
141  bool Blur = false;
142 
143 private:
144  vtkSSAOPass(const vtkSSAOPass&) = delete;
145  void operator=(const vtkSSAOPass&) = delete;
146 };
147 
148 #endif
abstract class specifies interface to map data
vtkFrustumSelector is a vtkSelector that selects elements based on whether they are inside or interse...
Convenient class for post-processing passes.
a simple class to control print indentation
Definition: vtkIndent.h:34
represent and manipulate 4x4 transformation matrices
Definition: vtkMatrix4x4.h:36
Internal class which encapsulates OpenGL FramebufferObject.
Class to make rendering a full screen quad easier.
OpenGL rendering window.
The VertexArrayObject class uses, or emulates, vertex array objects.
abstract superclass for all actors, volumes and annotations
Definition: vtkProp.h:48
Context in which a vtkRenderPass will render.
Implement a screen-space ambient occlusion pass.
Definition: vtkSSAOPass.h:43
bool PostReplaceShaderValues(std::string &vertexShader, std::string &geometryShader, std::string &fragmentShader, vtkAbstractMapper *mapper, vtkProp *prop) override
Post replace shader values.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
vtkSSAOPass()=default
bool PreReplaceShaderValues(std::string &vertexShader, std::string &geometryShader, std::string &fragmentShader, vtkAbstractMapper *mapper, vtkProp *prop) override
Pre replace shader values.
~vtkSSAOPass() override=default
void RenderDelegate(const vtkRenderState *s, int w, int h)
void Render(const vtkRenderState *s) override
Perform rendering according to a render state.
void RenderCombine(vtkOpenGLRenderWindow *renWin)
void InitializeGraphicsResources(vtkOpenGLRenderWindow *renWin, int w, int h)
void ComputeKernel()
void ReleaseGraphicsResources(vtkWindow *w) override
Release graphics resources and ask components to release their own resources.
static vtkSSAOPass * New()
std::vector< float > Kernel
Definition: vtkSSAOPass.h:137
void RenderSSAO(vtkOpenGLRenderWindow *renWin, vtkMatrix4x4 *projection, int w, int h)
bool SetShaderParameters(vtkShaderProgram *program, vtkAbstractMapper *mapper, vtkProp *prop, vtkOpenGLVertexArrayObject *VAO=nullptr) override
Set shader parameters.
The ShaderProgram uses one or more Shader objects.
abstracts an OpenGL texture object.
window superclass for vtkRenderWindow
Definition: vtkWindow.h:35
@ string
Definition: vtkX3D.h:496