vtkOpenGLRenderTimer.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkOpenGLRenderTimer.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 vtkOpenGLRenderTimer_h
#define vtkOpenGLRenderTimer_h
 
#include "vtkRenderingOpenGL2Module.h" // For export macro
#include "vtkType.h"                   // For vtkTypeUint64, etc
 
class VTKRENDERINGOPENGL2_EXPORT vtkOpenGLRenderTimer
{
public:
  vtkOpenGLRenderTimer();
  ~vtkOpenGLRenderTimer();
 
  static bool IsSupported();
 
  void Reset();
 
  void Start();
 
  void Stop();
 
  bool Started();
 
  bool Stopped();
 
  bool Ready();
 
 
  float GetElapsedSeconds();
  float GetElapsedMilliseconds();
  vtkTypeUInt64 GetElapsedNanoseconds();
 
 
  void ReusableStart();
  void ReusableStop();
  float GetReusableElapsedSeconds();
 
  vtkTypeUInt64 GetStartTime();
  vtkTypeUInt64 GetStopTime();
  void ReleaseGraphicsResources();
 
protected:
  bool StartReady;
  bool EndReady;
 
  vtkTypeUInt32 StartQuery;
  vtkTypeUInt32 EndQuery;
 
  vtkTypeUInt64 StartTime;
  vtkTypeUInt64 EndTime;
 
  bool ReusableStarted;
  bool ReusableEnded;
 
private:
  vtkOpenGLRenderTimer(const vtkOpenGLRenderTimer&) = delete;
  void operator=(const vtkOpenGLRenderTimer&) = delete;
};
 
#endif // vtkOpenGLRenderTimer_h
 
// VTK-HeaderTest-Exclude: vtkOpenGLRenderTimer.h