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/*
* Copyright 2010 Inalogic® Inc.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, as
* published by the Free Software Foundation; either version 2.1 or 3.0
* of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Jay Taoko <jaytaoko@inalogic.com>
*
*/
#include "NuxCore/NuxCore.h"
#include "GLResource.h"
#include "GLTimer.h"
namespace nux
{
GLTimer::GLTimer()
{
#if defined(NUX_OS_WINDOWS)
LARGE_INTEGER freq;
QueryPerformanceFrequency (&freq);
QueryPerformanceCounter (&now);
res = (float) (1.0f / (double) freq.QuadPart);
#elif defined(NUX_OS_LINUX)
gettimeofday (&m_last_time, NULL);
#endif
}
GLTimer::~GLTimer()
{
}
void GLTimer::Reset (void)
{
#if defined(NUX_OS_WINDOWS)
QueryPerformanceCounter (&now);
#elif defined(NUX_OS_LINUX)
gettimeofday (&m_last_time, NULL);
#endif
}
float GLTimer::PassedMilliseconds (void)
{
#if defined(NUX_OS_WINDOWS)
LARGE_INTEGER temp;
QueryPerformanceCounter (&temp);
double elapsedTime = (temp.QuadPart - now.QuadPart) * res * 1000.0f;
//now.QuadPart = temp.QuadPart;
return elapsedTime;
#elif defined(NUX_OS_LINUX)
timeval current_time;
float elapsedTime;
gettimeofday (¤t_time, NULL);
elapsedTime = (current_time.tv_sec - m_last_time.tv_sec) * 1000.0f; // seconds to millisecond
elapsedTime += (current_time.tv_usec - m_last_time.tv_usec) / 1000.0f; // micro seconds to millisecond
return elapsedTime;
#endif
}
// float GLTimer::PassedFrac(void)
// {
// LARGE_INTEGER temp;
// QueryPerformanceCounter(&temp);
// return (temp.QuadPart - now.QuadPart) * res;
// }
}
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