vtkSimpleMotionBlurPass.h

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

  Program:   Visualization Toolkit
  Module:    vtkSimpleMotionBlurPass.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 vtkSimpleMotionBlurPass_h
#define vtkSimpleMotionBlurPass_h

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

class vtkOpenGLFramebufferObject;
class vtkOpenGLHelper;
class vtkOpenGLRenderWindow;
class vtkTextureObject;

class VTKRENDERINGOPENGL2_EXPORT vtkSimpleMotionBlurPass : public vtkDepthImageProcessingPass
{
public:
  static vtkSimpleMotionBlurPass *New();
  vtkTypeMacro(vtkSimpleMotionBlurPass,vtkDepthImageProcessingPass);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Render(const vtkRenderState *s) override;

  void ReleaseGraphicsResources(vtkWindow *w) override;


  vtkGetMacro(SubFrames, int);
  virtual void SetSubFrames(int subFrames);

  vtkSetMacro(DepthFormat, int);

  vtkSetMacro(ColorFormat, int);

  // Get the depth texture object
  vtkGetObjectMacro(DepthTexture, vtkTextureObject);

  // Get the Color texture object
  vtkGetObjectMacro(ColorTexture, vtkTextureObject);

 protected:
  vtkSimpleMotionBlurPass();

  ~vtkSimpleMotionBlurPass() override;

  vtkOpenGLFramebufferObject *FrameBufferObject;
  vtkTextureObject *ColorTexture; // render target for the scene
  vtkTextureObject *AccumulationTexture[2]; // where we add the colors
  vtkTextureObject *DepthTexture; // render target for the depth


  int ViewportX;
  int ViewportY;
  int ViewportWidth;
  int ViewportHeight;

  int DepthFormat;
  int ColorFormat;

  int SubFrames;               // number of sub frames
  int CurrentSubFrame;         // what one are we on
  int ActiveAccumulationTexture;
  vtkOpenGLHelper *BlendProgram;

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

#endif