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FreeVRScene.h

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/***************************************************************************
 *cr                                                                       
 *cr            (C) Copyright 1995-2019 The Board of Trustees of the           
 *cr                        University of Illinois                       
 *cr                         All Rights Reserved                        
 *cr                                                                   
 ***************************************************************************/
/***************************************************************************
 * RCS INFORMATION:
 *
 *      $RCSfile: FreeVRScene.h,v $
 *      $Author: johns $        $Locker:  $             $State: Exp $
 *      $Revision: 1.32 $       $Date: 2020/02/26 15:51:10 $
 *
 ***************************************************************************/
#ifndef FreeVR_SCENE_H
#define FreeVR_SCENE_H

#include "Scene.h"
#include <freevr.h>
#include "FreeVRRoutines.h"
#include "FreeVRDisplayDevice.h" // for manipulating lights etc
#include "WKFThreads.h"          // for the barrier synchronization code

class VMDApp;

// This needs to grab shared memory for use in the FreeVR 
// environment.  It does it with one means.
//  1) use a FreeVRScene::operator new so that the internal
//      scene information is shared (get_disp_storage and
//      free_disp_storage)
// The shared memory is allocated through a global function,
//  new_from_FreeVR_memory.
// This must also call the left eye and right eye draws correctly

class FreeVRScene : public Scene {
private:
  VMDApp *app;

  wkf_barrier_t * draw_barrier;

  vrLock draw_rwlock;

public:
  FreeVRScene(VMDApp *);
  virtual ~FreeVRScene(void);
  
  void draw(DisplayDevice *);
  void draw(DisplayDevice *, vrRenderInfo *rendinfo);   /* This version passes the rendering properties through to the render routine */
  
  virtual int prepare();

  void *operator new(size_t);
  void operator delete(void *, size_t);
};

#endif /* FREEVR_SCENE_H */

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