vtkValuePassHelper.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkValuePassHelper.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.

=========================================================================*/
#ifndef vtkValuePassHelper_h
#define vtkValuePassHelper_h

#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkObject.h"


class vtkActor;
class vtkDataSet;
class vtkMapper;
class vtkOpenGLHelper;
class vtkRenderer;
class vtkWindow;
class vtkPolyData;

class VTKRENDERINGOPENGL2_EXPORT vtkValuePassHelper : public vtkObject
{
  friend class vtkOpenGLPolyDataMapper;

public:

  static vtkValuePassHelper* New();
  vtkTypeMacro(vtkValuePassHelper, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

protected:

  vtkValuePassHelper();
  ~vtkValuePassHelper();

  vtkGetMacro(RenderingMode, int);

  void UpdateConfiguration(vtkRenderer* ren, vtkActor* act, vtkMapper* mapper,
    vtkPolyData* input);

  void RenderPieceStart(vtkActor* actor, vtkDataSet* input);

  void UpdateShaders(std::string & VSSource, std::string & FSSource,
    std::string & required);


  void BindAttributes(vtkOpenGLHelper& cellBO);
  void BindUniforms(vtkOpenGLHelper& cellBO);

  void RenderPieceFinish();

  bool RequiresShaderRebuild();

  void ReleaseGraphicsResources(vtkWindow* win);

private:

  void AllocateGraphicsResources(vtkRenderer* ren);

  vtkValuePassHelper(const vtkValuePassHelper &) VTK_DELETE_FUNCTION;
  void operator=(const vtkValuePassHelper &) VTK_DELETE_FUNCTION;


  class vtkInternals;
  vtkInternals* Impl;
  int RenderingMode;
};
#endif // vtkValuePassHelper_h