vtkCompositeZPass.h

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

  Program:   Visualization Toolkit
  Module:    vtkCompositeZPass.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 vtkCompositeZPass_h
#define vtkCompositeZPass_h

#include "vtkRenderingParallelModule.h" // For export macro
#include "vtkRenderPass.h"

class vtkMultiProcessController;

class vtkPixelBufferObject;
class vtkTextureObject;
class vtkOpenGLRenderWindow;
class vtkOpenGLHelper;

class VTKRENDERINGPARALLEL_EXPORT vtkCompositeZPass : public vtkRenderPass
{
public:
  static vtkCompositeZPass *New();
  vtkTypeMacro(vtkCompositeZPass,vtkRenderPass);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Render(const vtkRenderState *s) override;

  void ReleaseGraphicsResources(vtkWindow *w) override;


  vtkGetObjectMacro(Controller,vtkMultiProcessController);
  virtual void SetController(vtkMultiProcessController *controller);

  bool IsSupported(vtkOpenGLRenderWindow *context);

 protected:
  vtkCompositeZPass();

  ~vtkCompositeZPass() override;

  void CreateProgram(vtkOpenGLRenderWindow *context);

  vtkMultiProcessController *Controller;

  vtkPixelBufferObject *PBO;
  vtkTextureObject *ZTexture;
  vtkOpenGLHelper *Program;
  float *RawZBuffer;
  size_t RawZBufferSize;

 private:
  vtkCompositeZPass(const vtkCompositeZPass&) = delete;
  void operator=(const vtkCompositeZPass&) = delete;
};

#endif