VTK  9.0.1
vtkShadowMapBakerPass.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkShadowMapBakerPass.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 =========================================================================*/
41 #ifndef vtkShadowMapBakerPass_h
42 #define vtkShadowMapBakerPass_h
43 
44 #include "vtkOpenGLRenderPass.h"
45 #include "vtkRenderingOpenGL2Module.h" // For export macro
46 #include "vtkSmartPointer.h" // for ivars
47 #include <vector> // STL Header
48 
51 class vtkCamera;
52 class vtkLight;
54 class vtkTextureObject;
55 
56 class VTKRENDERINGOPENGL2_EXPORT vtkShadowMapBakerPass : public vtkOpenGLRenderPass
57 {
58 public:
61  void PrintSelf(ostream& os, vtkIndent indent) override;
62 
67  void Render(const vtkRenderState* s) override;
68 
75 
77 
83  vtkGetObjectMacro(OpaqueSequence, vtkRenderPass);
84  virtual void SetOpaqueSequence(vtkRenderPass* opaqueSequence);
86 
88 
94  vtkGetObjectMacro(CompositeZPass, vtkRenderPass);
95  virtual void SetCompositeZPass(vtkRenderPass* compositeZPass);
97 
99 
104  vtkSetMacro(Resolution, unsigned int);
105  vtkGetMacro(Resolution, unsigned int);
107 
116 
127 
134  std::vector<vtkSmartPointer<vtkTextureObject> >* GetShadowMaps();
135 
142  std::vector<vtkSmartPointer<vtkCamera> >* GetLightCameras();
143 
153 
154  // // Description:
155  // INTERNAL USE ONLY.
156  // Internally used by vtkShadowMapBakerPass and vtkShadowMapPass.
157  //
158  // Set NeedUpate to false. Called by vtkShadowMapPass.
159  void SetUpToDate();
160 
161 protected:
166 
171 
172  // vtkOpenGLRenderPass virtuals:
173  bool PreReplaceShaderValues(std::string& vertexShader, std::string& geometryShader,
174  std::string& fragmentShader, vtkAbstractMapper* mapper, vtkProp* prop) override;
176  vtkOpenGLVertexArrayObject* VAO = nullptr) override;
177 
186  double* v, double* pt, double* dir, double& mNear, double& mFar, bool initialized);
187 
194  void BoxNearFar(double* bb, double* pt, double* dir, double& mNear, double& mFar);
195 
201  void BuildCameraLight(vtkLight* light, double* boundingBox, vtkCamera* lcamera);
202 
208 
210 
212 
213  unsigned int Resolution;
214 
216 
221 
222  std::vector<vtkSmartPointer<vtkTextureObject> >* ShadowMaps;
223  std::vector<vtkSmartPointer<vtkCamera> >* LightCameras;
224 
228 
229 private:
231  void operator=(const vtkShadowMapBakerPass&) = delete;
232 };
233 
234 #endif
abstract class specifies interface to map data
a virtual camera for 3D rendering
Definition: vtkCamera.h:46
a simple class to control print indentation
Definition: vtkIndent.h:34
Key for integer values in vtkInformation.
a virtual light for 3D rendering
Definition: vtkLight.h:57
Internal class which encapsulates OpenGL FramebufferObject.
Abstract render pass with shader modifications.
OpenGL rendering window.
The VertexArrayObject class uses, or emulates, vertex array objects.
abstract superclass for all actors, volumes and annotations
Definition: vtkProp.h:48
Perform part of the rendering of a vtkRenderer.
Definition: vtkRenderPass.h:57
Context in which a vtkRenderPass will render.
The ShaderProgram uses one or more Shader objects.
Implement a builder of shadow map pass.
bool SetShaderParameters(vtkShaderProgram *program, vtkAbstractMapper *mapper, vtkProp *prop, vtkOpenGLVertexArrayObject *VAO=nullptr) override
Update the uniforms of the shader program.
std::vector< vtkSmartPointer< vtkTextureObject > > * GetShadowMaps()
INTERNAL USE ONLY Internally used by vtkShadowMapBakerPass and vtkShadowMapPass.
vtkShadowMapBakerPass()
Default constructor.
bool PreReplaceShaderValues(std::string &vertexShader, std::string &geometryShader, std::string &fragmentShader, vtkAbstractMapper *mapper, vtkProp *prop) override
Use vtkShaderProgram::Substitute to replace //VTK::XXX:YYY declarations in the shader sources.
virtual void SetOpaqueSequence(vtkRenderPass *opaqueSequence)
std::vector< vtkSmartPointer< vtkCamera > > * GetLightCameras()
INTERNAL USE ONLY.
void CheckSupport(vtkOpenGLRenderWindow *w)
Check if shadow mapping is supported by the current OpenGL context.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
std::vector< vtkSmartPointer< vtkCamera > > * LightCameras
void BoxNearFar(double *bb, double *pt, double *dir, double &mNear, double &mFar)
Compute the min/max of the projection of a box in a given direction.
bool LightCreatesShadow(vtkLight *l)
INTERNAL USE ONLY.
~vtkShadowMapBakerPass() override
Destructor.
void PointNearFar(double *v, double *pt, double *dir, double &mNear, double &mFar, bool initialized)
Helper method to compute the mNearest point in a given direction.
void ReleaseGraphicsResources(vtkWindow *w) override
Release graphics resources and ask components to release their own resources.
bool GetHasShadows()
INTERNAL USE ONLY.
void BuildCameraLight(vtkLight *light, double *boundingBox, vtkCamera *lcamera)
Build a camera from spot light parameters.
static vtkShadowMapBakerPass * New()
void Render(const vtkRenderState *s) override
Perform rendering according to a render state s.
vtkOpenGLFramebufferObject * FrameBufferObject
Graphics resources.
bool GetNeedUpdate()
INTERNAL USE ONLY.
std::vector< vtkSmartPointer< vtkTextureObject > > * ShadowMaps
virtual void SetCompositeZPass(vtkRenderPass *compositeZPass)
abstracts an OpenGL texture object.
record modification and/or execution time
Definition: vtkTimeStamp.h:33
window superclass for vtkRenderWindow
Definition: vtkWindow.h:35
@ dir
Definition: vtkX3D.h:330
@ string
Definition: vtkX3D.h:496