00001 /* 00002 ----------------------------------------------------------------------------- 00003 This source file is part of OGRE 00004 (Object-oriented Graphics Rendering Engine) 00005 For the latest info, see http://www.ogre3d.org/ 00006 00007 Copyright © 2000-2002 The OGRE Team 00008 Also see acknowledgements in Readme.html 00009 00010 This program is free software; you can redistribute it and/or modify it under 00011 the terms of the GNU Lesser General Public License as published by the Free Software 00012 Foundation; either version 2 of the License, or (at your option) any later 00013 version. 00014 00015 This program is distributed in the hope that it will be useful, but WITHOUT 00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public License along with 00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple 00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to 00022 http://www.gnu.org/copyleft/lesser.txt. 00023 ----------------------------------------------------------------------------- 00024 */ 00025 #include "OgreWin32Timer.h" 00026 00027 namespace Ogre { 00028 //------------------------------------------------------------------------- 00029 void Win32Timer::reset() 00030 { 00031 Timer::reset(); 00032 QueryPerformanceFrequency(&mFrequency); 00033 QueryPerformanceCounter(&mStartTime); 00034 } 00035 //------------------------------------------------------------------------- 00036 unsigned long Win32Timer::getMilliseconds() 00037 { 00038 LARGE_INTEGER curTime; 00039 LONGLONG newTicks; 00040 00041 QueryPerformanceCounter(&curTime); 00042 00043 newTicks = (curTime.QuadPart - mStartTime.QuadPart); 00044 // Scale by 1000 in order to get millisecond precision 00045 newTicks *= 1000; 00046 newTicks /= mFrequency.QuadPart; 00047 00048 return (unsigned long)newTicks; 00049 } 00050 //------------------------------------------------------------------------- 00051 unsigned long Win32Timer::getMicroseconds() 00052 { 00053 LARGE_INTEGER curTime; 00054 LONGLONG newTicks; 00055 00056 QueryPerformanceCounter(&curTime); 00057 00058 newTicks = (curTime.QuadPart - mStartTime.QuadPart); 00059 // Scale by 1000000 in order to get microsecond precision 00060 newTicks *= (Real)1000000.0/(Real)mFrequency.QuadPart; 00061 00062 return (unsigned long)newTicks; 00063 } 00064 00065 }
Copyright © 2002-2003 by The OGRE Team
Last modified Wed Jan 21 00:10:32 2004