vtkOrderIndependentTranslucentPass.h

Go to the documentation of this file.

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

  Program:   Visualization Toolkit
  Module:    vtkOrderIndependentTranslucentPass.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 vtkOrderIndependentTranslucentPass_h
#define vtkOrderIndependentTranslucentPass_h

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

class vtkOpenGLFramebufferObject;
class vtkTextureObject;
class vtkOpenGLRenderWindow;
class vtkOpenGLState;
class vtkOpenGLQuadHelper;

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

  void Render(const vtkRenderState *s) override;

  void ReleaseGraphicsResources(vtkWindow *w) override;


  vtkGetObjectMacro(TranslucentPass,vtkRenderPass);
  virtual void SetTranslucentPass(vtkRenderPass *translucentPass);

  // vtkOpenGLRenderPass virtuals:
  bool PostReplaceShaderValues(std::string &vertexShader,
                                   std::string &geometryShader,
                                   std::string &fragmentShader,
                                   vtkAbstractMapper *mapper,
                                   vtkProp *prop) override;

 protected:
  vtkOrderIndependentTranslucentPass();

  ~vtkOrderIndependentTranslucentPass() override;

  vtkRenderPass *TranslucentPass;


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

  vtkOpenGLFramebufferObject *Framebuffer;
  vtkOpenGLQuadHelper *FinalBlend;

  vtkTextureObject *TranslucentRGBATexture;
  vtkTextureObject *TranslucentRTexture;
  vtkTextureObject *TranslucentZTexture;

  void BlendFinalPeel(vtkOpenGLRenderWindow *renWin);

  // useful to store
  vtkOpenGLState *State;

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

#endif