/usr/include/vtk-7.1/vtkShadowMapPass.h is in libvtk7-dev 7.1.1+dfsg1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Program: Visualization Toolkit
Module: vtkShadowMapPass.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkShadowMapPass
* @brief Implement a shadow mapping render pass.
*
* Render the opaque polygonal geometry of a scene with shadow maps (a
* technique to render hard shadows in hardware).
*
* This pass expects an initialized depth buffer and color buffer.
* Initialized buffers means they have been cleared with farest z-value and
* background color/gradient/transparent color.
* An opaque pass may have been performed right after the initialization.
*
*
*
* Its delegate is usually set to a vtkOpaquePass.
*
* @par Implementation:
* The first pass of the algorithm is to generate a shadow map per light
* (depth map from the light point of view) by rendering the opaque objects
* with the OCCLUDER property keys.
* The second pass is to render the opaque objects with the RECEIVER keys.
*
* @sa
* vtkRenderPass, vtkOpaquePass
*/
#ifndef vtkShadowMapPass_h
#define vtkShadowMapPass_h
#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkRenderPass.h"
#include <vector> // STL Header
#include <string> // For member variables.
class vtkOpenGLRenderWindow;
class vtkInformationIntegerKey;
class vtkCamera;
class vtkLight;
class vtkFrameBufferObject;
class vtkShadowMapPassTextures; // internal
class vtkShadowMapPassLightCameras; // internal
class vtkShadowMapBakerPass;
class vtkInformationObjectBaseKey;
class vtkShaderProgram;
class VTKRENDERINGOPENGL2_EXPORT vtkShadowMapPass : public vtkRenderPass
{
public:
static vtkShadowMapPass *New();
vtkTypeMacro(vtkShadowMapPass,vtkRenderPass);
void PrintSelf(ostream& os, vtkIndent indent);
/**
* Perform rendering according to a render state \p s.
* \pre s_exists: s!=0
*/
virtual void Render(const vtkRenderState *s);
/**
* Release graphics resources and ask components to release their own
* resources.
* \pre w_exists: w!=0
*/
void ReleaseGraphicsResources(vtkWindow *w);
//@{
/**
* Pass that generates the shadow maps.
* the vtkShadowMapPass will use the Resolution ivar of
* this pass.
* Initial value is a NULL pointer.
*/
vtkGetObjectMacro(ShadowMapBakerPass,vtkShadowMapBakerPass);
virtual void SetShadowMapBakerPass(
vtkShadowMapBakerPass *shadowMapBakerPass);
//@}
//@{
/**
* Pass that render the lights and opaque geometry
* Typically a sequence pass with a light pass and opaque pass.
*/
vtkGetObjectMacro(OpaqueSequence,vtkRenderPass);
virtual void SetOpaqueSequence(vtkRenderPass *opaqueSequence);
//@}
/**
* get the matricies for all the
* shadow maps.
*/
std::vector<double> ShadowMapTransforms() {
return this->ShadowTransforms; }
/**
* get the texture units for the shadow maps
* for each light. If a light does not cast a shadow
* it is set to -1
*/
std::vector<int> GetShadowMapTextureUnits() {
return this->ShadowTextureUnits; }
/**
* this key will contain the shadow map pass
*/
static vtkInformationObjectBaseKey *ShadowMapPass();
/**
* Get the shader code to compute light factors based
* on a mappers vertexVC variable
*/
std::string GetFragmentDeclaration() {
return this->FragmentDeclaration; }
std::string GetFragmentImplementation() {
return this->FragmentImplementation; }
/**
* A mapper can call this to set the uniforms that this
* pass uses
*/
void SetUniforms(vtkShaderProgram *program);
protected:
/**
* Default constructor. DelegatetPass is set to NULL.
*/
vtkShadowMapPass();
/**
* Destructor.
*/
virtual ~vtkShadowMapPass();
/**
* Check if shadow mapping is supported by the current OpenGL context.
* \pre w_exists: w!=0
*/
void CheckSupport(vtkOpenGLRenderWindow *w);
vtkShadowMapBakerPass *ShadowMapBakerPass;
vtkRenderPass *CompositeRGBAPass;
vtkRenderPass *OpaqueSequence;
/**
* Graphics resources.
*/
vtkFrameBufferObject *FrameBufferObject;
vtkShadowMapPassTextures *ShadowMaps;
vtkShadowMapPassLightCameras *LightCameras;
vtkTimeStamp LastRenderTime;
// to store the shader code and settings
void BuildShaderCode();
std::string FragmentDeclaration;
std::string FragmentImplementation;
std::vector<int> ShadowTextureUnits;
std::vector<double> ShadowTransforms;
std::vector<float> ShadowAttenuation;
private:
vtkShadowMapPass(const vtkShadowMapPass&) VTK_DELETE_FUNCTION;
void operator=(const vtkShadowMapPass&) VTK_DELETE_FUNCTION;
};
#endif
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