DepthPeeling.hh

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#pragma once
 
 
#include <QObject>
#include <QAction>
 
#include <OpenFlipper/BasePlugin/BaseInterface.hh>
#include <OpenFlipper/BasePlugin/RenderInterface.hh>
#include <OpenFlipper/BasePlugin/LoggingInterface.hh>
 
 
#include <ACG/GL/IRenderer.hh>
#include <ACG/GL/FBO.hh>
 
class DepthPeeling : public QObject, BaseInterface, RenderInterface, LoggingInterface, ACG::IRenderer
{
  Q_OBJECT
    Q_INTERFACES(BaseInterface)
    Q_INTERFACES(RenderInterface)
    Q_INTERFACES(LoggingInterface)
 
  Q_PLUGIN_METADATA(IID "org.OpenFlipper.Plugins.Plugin-Render-DepthPeeling")
 
signals:
  // LoggingInterface
  void log(Logtype _type, QString _message);
  void log(QString _message);
 
 
public:
  DepthPeeling();
  ~DepthPeeling();
 
  QString name() { return (QString("DepthPeeling Plugin")); };
  QString description( ) { return (QString(tr("DepthPeeling Rendering Pipeline (Alpha Version!)"))); };
 
 
  void addRenderObject(ACG::RenderObject* _renderObject);
 
 
public slots:
  QString version() { return QString("1.0"); };
 
  QString renderObjectsInfo(bool _outputShaderInfo);
 
  QAction* optionsAction();
 
private slots:
 
  //BaseInterface
  void initializePlugin();
  void exit();
 
  // RenderInterface
  void render(ACG::GLState* _glState, Viewer::ViewerProperties& _properties);
  QString rendererName() {return QString("Alpha_Version_DepthPeeling");}
  void supportedDrawModes(ACG::SceneGraph::DrawModes::DrawMode& _mode) {_mode = ACG::SceneGraph::DrawModes::DEFAULT;}
 
  QString checkOpenGL();
 
  void slotModeChanged( QAction *  );
 
 
private:
 
 
  void renderFrontPeeling(ACG::GLState* _glState, Viewer::ViewerProperties& _properties);
 
  void renderDualPeeling(ACG::GLState* _glState, Viewer::ViewerProperties& _properties);
 
  int peelMode_;
 
  bool copyFrontDepth_;
 
  int maxPeelCount_;
 
  GLSL::Program* peelBlend_;
 
  GLSL::Program* peelFinal_;
 
  GLuint peelQueryID_;
 
 
  GLSL::Program* peelBlendDual_;
  GLSL::Program* peelFinalDual_;
 
 
  struct ViewerResources
  {
    ViewerResources();
    ~ViewerResources();
 
    // resize textures
    void resize(bool _dualPeeling, unsigned int _width, unsigned int _height);
 
    unsigned int width_;
 
    unsigned int height_;
 
 
    // single layer depth peeling textures (front to back peeling)
    //  ping-pong buffer for (depth, front) targets
    GLuint singleDepthTex_[2]; // float1: minDepth
    GLuint singleFrontTex_[2]; // rgba: color of front-peeled layer
    GLuint singleBlendTex_;    // rgba: color accumulation buffer
 
    ACG::FBO* singleFbo_; // targets: {depth0, front0,  depth1, front1, blend}
 
 
 
 
    // dual depth peeling textures
    //  ping-pong buffer for (depth, front, back) targets
    GLuint dualDepthTex_[2]; // float2: (-minDepth, maxDepth)
    GLuint dualFrontTex_[2]; // rgba: color of front-peeled layer
    GLuint dualBackTex_[2];  // rgba: color of back-peeled layer
    GLuint dualBlendTex_;    // rgb:  color accumulation buffer
 
    ACG::FBO* dualFbo_; // targets: {depth0, front0, back0,  depth1, front1, back1,  blend}
  };
 
  void initDepthPeeling();
 
  void initDualDepthPeeling();
 
  std::map<int, ViewerResources> viewerRes_;
 
 
 
 
  // debug functions
//   GLSL::Program* dbgProg_;
// 
//   void dbgDrawTex(GLuint _texID);
};