vtkOpenGLRenderTimer.h

Go to the documentation of this file.

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

  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