OITLinkedList.hh 4.78 KB
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/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
*      Copyright (C) 2001-2014 by Computer Graphics Group, RWTH Aachen       *
*                           www.openflipper.org                              *
*                                                                            *
*--------------------------------------------------------------------------- *
*  This file is part of OpenFlipper.                                         *
*                                                                            *
*  OpenFlipper is free software: you can redistribute it and/or modify       *
*  it under the terms of the GNU Lesser General Public License as            *
*  published by the Free Software Foundation, either version 3 of            *
*  the License, or (at your option) any later version with the               *
*  following exceptions:                                                     *
*                                                                            *
*  If other files instantiate templates or use macros                        *
*  or inline functions from this file, or you compile this file and          *
*  link it with other files to produce an executable, this file does         *
*  not by itself cause the resulting executable to be covered by the         *
*  GNU Lesser General Public License. This exception does not however        *
*  invalidate any other reasons why the executable file might be             *
*  covered by the GNU Lesser General Public License.                         *
*                                                                            *
*  OpenFlipper is distributed in the hope that it will be useful,            *
*  but WITHOUT ANY WARRANTY; without even the implied warranty of            *
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
*  GNU Lesser General Public License for more details.                       *
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*  You should have received a copy of the GNU LesserGeneral Public           *
*  License along with OpenFlipper. If not,                                   *
*  see <http://www.gnu.org/licenses/>.                                       *
*                                                                            *
\*===========================================================================*/

/*===========================================================================*\
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*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
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\*===========================================================================*/


#pragma once


#include <QObject>

#include <OpenFlipper/BasePlugin/BaseInterface.hh>
#include <OpenFlipper/BasePlugin/RenderInterface.hh>
#include <OpenFlipper/BasePlugin/LoggingInterface.hh>

#include <ACG/GL/IRenderer.hh>
#include <ACG/GL/globjects.hh>
#include <ACG/GL/FBO.hh>

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class OITLinkedList : public QObject, BaseInterface, RenderInterface, LoggingInterface, ACG::IRenderer
{
  Q_OBJECT
    Q_INTERFACES(BaseInterface)
    Q_INTERFACES(RenderInterface)
    Q_INTERFACES(LoggingInterface)

#if QT_VERSION >= 0x050000
  Q_PLUGIN_METADATA(IID "org.OpenFlipper.Plugins.Plugin-Render-OITLinkedList")
#endif

signals:
  // LoggingInterface
  void log(Logtype _type, QString _message);
  void log(QString _message);


public:
  OITLinkedList();
  ~OITLinkedList();

  QString name() { return (QString("OITLinkedList")); };
  QString description( ) { return (QString(tr("Order independent transparency with per pixel linked lists"))); };

public slots:
  QString version() { return QString("1.0"); };

  QString renderObjectsInfo(bool _outputShaderInfo);

private slots:

  //BaseInterface
  void initializePlugin();
  void exit(){}

  // RenderInterface
  void render(ACG::GLState* _glState, Viewer::ViewerProperties& _properties);
  QString rendererName() {return QString("OITLinkedList");}
  void supportedDrawModes(ACG::SceneGraph::DrawModes::DrawMode& _mode) {_mode = ACG::SceneGraph::DrawModes::DEFAULT;}
  
  QString checkOpenGL();


private:


  void prepareBuffers(int w, int h);

  void renderOIT(int w, int h, bool multisampled);



  // counter for number of processed fragments
  ACG::AtomicCounter fragCounter_;

  // stores start offset into FLBuffer
  ACG::TextureBuffer startOffsetBuffer_;

  // ABuffer: per pixel linked list buffer
  ACG::TextureBuffer ABuffer_;

};

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