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

  Program:   Visualization Toolkit
  Module:    vtkRenderPass.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 vtkRenderPass_h
#define vtkRenderPass_h

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

class vtkRenderState;
class vtkWindow;
class vtkRenderer;

class VTKRENDERINGOPENGL_EXPORT vtkRenderPass : public vtkObject
{
 public:
  vtkTypeMacro(vtkRenderPass,vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent);

  //BTX

  virtual void Render(const vtkRenderState *s)=0;
  //ETX


  vtkGetMacro(NumberOfRenderedProps,int);

  virtual void ReleaseGraphicsResources(vtkWindow *w);

 protected:
  vtkRenderPass();

  virtual ~vtkRenderPass();

  void UpdateCamera(vtkRenderer *renderer);

  void ClearLights(vtkRenderer *renderer);

  void UpdateLightGeometry(vtkRenderer *renderer);

  void UpdateLights(vtkRenderer *renderer);

  void UpdateGeometry(vtkRenderer *renderer);


  void SetLastRenderingUsedDepthPeeling(vtkRenderer *renderer,
                                        bool value);

  int NumberOfRenderedProps;

 private:
  vtkRenderPass(const vtkRenderPass&);  // Not implemented.
  void operator=(const vtkRenderPass&);  // Not implemented.
};

#endif