[pcsx_rearmed.git] / plugins / dfxvideo / fps.c

/***************************************************************************
                          fps.c  -  description
                             -------------------
    begin                : Sun Oct 28 2001
    copyright            : (C) 2001 by Pete Bernert
    email                : BlackDove@addcom.de
 ***************************************************************************/
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version. See also the license.txt file for *
 *   additional informations.                                              *
 *                                                                         *
 ***************************************************************************/

#define _IN_FPS

#include <unistd.h>

#include "externals.h"
#include "fps.h"
#include "gpu.h"

// FPS stuff
float          fFrameRateHz=0;
DWORD          dwFrameRateTicks=16;
float          fFrameRate;
int            iFrameLimit;
int            UseFrameLimit=0;
int            UseFrameSkip=0;

// FPS skipping / limit
BOOL   bInitCap = TRUE;
float  fps_skip = 0;
float  fps_cur  = 0;

#define MAXLACE 16

void CheckFrameRate(void)
{
 if(UseFrameSkip)                                      // skipping mode?
  {
   if(!(dwActFixes&0x80))                              // not old skipping mode?
    {
     dwLaceCnt++;                                      // -> store cnt of vsync between frames
     if(dwLaceCnt>=MAXLACE && UseFrameLimit)           // -> if there are many laces without screen toggling,
      {                                                //    do std frame limitation
       if(dwLaceCnt==MAXLACE) bInitCap=TRUE;
       FrameCap();
      }
    }
   else if(UseFrameLimit) FrameCap();
   calcfps();                                          // -> calc fps display in skipping mode
  }
 else                                                  // non-skipping mode:
  {
   if(UseFrameLimit) FrameCap();                       // -> do it
   if(ulKeybits&KEY_SHOWFPS) calcfps();                // -> and calc fps display
  }
}

#define TIMEBASE 100000

unsigned long timeGetTime()
{
 struct timeval tv;
 gettimeofday(&tv, 0);                                 // well, maybe there are better ways
 return tv.tv_sec * 100000 + tv.tv_usec/10;            // to do that, but at least it works
}

void FrameCap (void)
{
 static unsigned long curticks, lastticks, _ticks_since_last_update;
 static unsigned int TicksToWait = 0;
 int overslept=0, tickstogo=0;
 BOOL Waiting = TRUE;

  {
   curticks = timeGetTime();
   _ticks_since_last_update = curticks - lastticks;

    if((_ticks_since_last_update > TicksToWait) ||
       (curticks <lastticks))
    {
     lastticks = curticks;
     overslept = _ticks_since_last_update - TicksToWait;
     if((_ticks_since_last_update-TicksToWait) > dwFrameRateTicks)
          TicksToWait=0;
     else
          TicksToWait=dwFrameRateTicks - overslept;
    }
   else
    {
     while (Waiting)
      {
       curticks = timeGetTime();
       _ticks_since_last_update = curticks - lastticks;
       tickstogo = TicksToWait - _ticks_since_last_update;
       if ((_ticks_since_last_update > TicksToWait) ||
           (curticks < lastticks) || tickstogo < overslept)
        {
         Waiting = FALSE;
         lastticks = curticks;
         overslept = _ticks_since_last_update - TicksToWait;
         TicksToWait = dwFrameRateTicks - overslept;
         return;
        }
	if (tickstogo >= 200 && !(dwActFixes&16))
		usleep(tickstogo*10 - 200);
      }
    }
  }
}

#define MAXSKIP 120

void FrameSkip(void)
{
 static int   iNumSkips=0,iAdditionalSkip=0;           // number of additional frames to skip
 static DWORD dwLastLace=0;                            // helper var for frame limitation
 static DWORD curticks, lastticks, _ticks_since_last_update;
 int tickstogo=0;
 static int overslept=0;

 if(!dwLaceCnt) return;                                // important: if no updatelace happened, we ignore it completely

 if(iNumSkips)                                         // we are in skipping mode?
  {
   dwLastLace+=dwLaceCnt;                              // -> calc frame limit helper (number of laces)
   bSkipNextFrame = TRUE;                              // -> we skip next frame
   iNumSkips--;                                        // -> ok, one done
  }
 else                                                  // ok, no additional skipping has to be done...
  {                                                    // we check now, if some limitation is needed, or a new skipping has to get started
   DWORD dwWaitTime;

   if(bInitCap || bSkipNextFrame)                      // first time or we skipped before?
    {
     if(UseFrameLimit && !bInitCap)                    // frame limit wanted and not first time called?
      {
       DWORD dwT=_ticks_since_last_update;             // -> that's the time of the last drawn frame
       dwLastLace+=dwLaceCnt;                          // -> and that's the number of updatelace since the start of the last drawn frame

       curticks = timeGetTime();                       // -> now we calc the time of the last drawn frame + the time we spent skipping
       _ticks_since_last_update= dwT+curticks - lastticks;

       dwWaitTime=dwLastLace*dwFrameRateTicks;         // -> and now we calc the time the real psx would have needed

       if(_ticks_since_last_update<dwWaitTime)         // -> we were too fast?
        {
         if((dwWaitTime-_ticks_since_last_update)>     // -> some more security, to prevent
            (60*dwFrameRateTicks))                     //    wrong waiting times
          _ticks_since_last_update=dwWaitTime;

         while(_ticks_since_last_update<dwWaitTime)    // -> loop until we have reached the real psx time
          {                                            //    (that's the additional limitation, yup)
           curticks = timeGetTime();
           _ticks_since_last_update = dwT+curticks - lastticks;
          }
        }
       else                                            // we were still too slow ?!!?
        {
         if(iAdditionalSkip<MAXSKIP)                   // -> well, somewhen we really have to stop skipping on very slow systems
          {
           iAdditionalSkip++;                          // -> inc our watchdog var
           dwLaceCnt=0;                                // -> reset lace count
           lastticks = timeGetTime();
           return;                                     // -> done, we will skip next frame to get more speed
          } 
        }
      }

     bInitCap=FALSE;                                   // -> ok, we have inited the frameskip func
     iAdditionalSkip=0;                                // -> init additional skip
     bSkipNextFrame=FALSE;                             // -> we don't skip the next frame
     lastticks = timeGetTime();                        // -> we store the start time of the next frame
     dwLaceCnt=0;                                      // -> and we start to count the laces 
     dwLastLace=0;
     _ticks_since_last_update=0;
     return;                                           // -> done, the next frame will get drawn
    }

   bSkipNextFrame=FALSE;                               // init the frame skip signal to 'no skipping' first

   curticks = timeGetTime();                           // get the current time (we are now at the end of one drawn frame)
   _ticks_since_last_update = curticks - lastticks;

   dwLastLace=dwLaceCnt;                               // store curr count (frame limitation helper)
   dwWaitTime=dwLaceCnt*dwFrameRateTicks;              // calc the 'real psx lace time'
   if (dwWaitTime >= overslept)
   	dwWaitTime-=overslept;

   if(_ticks_since_last_update>dwWaitTime)             // hey, we needed way too long for that frame...
    {
     if(UseFrameLimit)                                 // if limitation, we skip just next frame,
      {                                                // and decide after, if we need to do more
       iNumSkips=0;
      }
     else
      {
       iNumSkips=_ticks_since_last_update/dwWaitTime;  // -> calc number of frames to skip to catch up
       iNumSkips--;                                    // -> since we already skip next frame, one down
       if(iNumSkips>MAXSKIP) iNumSkips=MAXSKIP;        // -> well, somewhere we have to draw a line
      }
     bSkipNextFrame = TRUE;                            // -> signal for skipping the next frame
    }
   else                                                // we were faster than real psx? fine :)
   if(UseFrameLimit)                                   // frame limit used? so we wait til the 'real psx time' has been reached
    {
     if(dwLaceCnt>MAXLACE)                             // -> security check
      _ticks_since_last_update=dwWaitTime;

     while(_ticks_since_last_update<dwWaitTime)        // -> just do a waiting loop...
      {
       curticks = timeGetTime();
       _ticks_since_last_update = curticks - lastticks;

	tickstogo = dwWaitTime - _ticks_since_last_update;
	if (tickstogo-overslept >= 200 && !(dwActFixes&16))
		usleep(tickstogo*10 - 200);
      }
    }
   overslept = _ticks_since_last_update - dwWaitTime;
   if (overslept < 0)
	overslept = 0;
   lastticks = timeGetTime();                          // ok, start time of the next frame
  }

 dwLaceCnt=0;                                          // init lace counter
}

void calcfps(void)
{
 static unsigned long curticks,_ticks_since_last_update,lastticks;
 static long   fps_cnt = 0;
 static unsigned long  fps_tck = 1;
 static long          fpsskip_cnt = 0;
 static unsigned long fpsskip_tck = 1;

  {
   curticks = timeGetTime();
   _ticks_since_last_update=curticks-lastticks;

   if(UseFrameSkip && !UseFrameLimit && _ticks_since_last_update)
    fps_skip=min(fps_skip,((float)TIMEBASE/(float)_ticks_since_last_update+1.0f));

   lastticks = curticks;
  }

 if(UseFrameSkip && UseFrameLimit)
  {
   fpsskip_tck += _ticks_since_last_update;

   if(++fpsskip_cnt==2)
    {
     fps_skip = (float)2000/(float)fpsskip_tck;
     fps_skip +=6.0f;
     fpsskip_cnt = 0;
     fpsskip_tck = 1;
    }
  }

 fps_tck += _ticks_since_last_update;

 if(++fps_cnt==20)
  {
   fps_cur = (float)(TIMEBASE*20)/(float)fps_tck;

   fps_cnt = 0;
   fps_tck = 1;

   //if(UseFrameLimit && fps_cur>fFrameRateHz)           // optical adjust ;) avoids flickering fps display
    //fps_cur=fFrameRateHz;
  }

}

void PCFrameCap (void)
{
 static unsigned long curticks, lastticks, _ticks_since_last_update;
 static unsigned long TicksToWait = 0;
 BOOL Waiting = TRUE;

 while (Waiting)
  {
   curticks = timeGetTime();
   _ticks_since_last_update = curticks - lastticks;
   if ((_ticks_since_last_update > TicksToWait) ||
       (curticks < lastticks))
    {
     Waiting = FALSE;
     lastticks = curticks;
     TicksToWait = (TIMEBASE/ (unsigned long)fFrameRateHz);
    }
  }
}

void PCcalcfps(void)
{
 static unsigned long curticks,_ticks_since_last_update,lastticks;
 static long  fps_cnt = 0;
 static float fps_acc = 0;
 float CurrentFPS=0;

 curticks = timeGetTime();
 _ticks_since_last_update=curticks-lastticks;
 if(_ticks_since_last_update)
      CurrentFPS=(float)TIMEBASE/(float)_ticks_since_last_update;
 else CurrentFPS = 0;
 lastticks = curticks;

 fps_acc += CurrentFPS;

 if(++fps_cnt==10)
  {
   fps_cur = fps_acc / 10;
   fps_acc = 0;
   fps_cnt = 0;
  }

 fps_skip=CurrentFPS+1.0f;
}

void SetAutoFrameCap(void)
{
 if(iFrameLimit==1)
  {
   fFrameRateHz = fFrameRate;
   dwFrameRateTicks=(TIMEBASE*100 / (unsigned long)(fFrameRateHz*100));
   return;
  }

 if(dwActFixes&32)
  {
   if (PSXDisplay.Interlaced)
        fFrameRateHz = PSXDisplay.PAL?50.0f:60.0f;
   else fFrameRateHz = PSXDisplay.PAL?25.0f:30.0f;
  }
 else
  {
   fFrameRateHz = PSXDisplay.PAL?50.0f:59.94f;
   dwFrameRateTicks=(TIMEBASE*100 / (unsigned long)(fFrameRateHz*100));
  }
}

void SetFPSHandler(void)
{
}

void InitFPS(void)
{
 if(!fFrameRate) fFrameRate=200.0f;
 if(fFrameRateHz==0) fFrameRateHz=fFrameRate;          // set user framerate
 dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);
}
Commit	Line	Data
ef79bbde P	1	/***************************************************************************
	2	fps.c - description
	3	-------------------
	4	begin : Sun Oct 28 2001
	5	copyright : (C) 2001 by Pete Bernert
	6	email : BlackDove@addcom.de
	7	***************************************************************************/
	8	/***************************************************************************
	9	* *
	10	* This program is free software; you can redistribute it and/or modify *
	11	* it under the terms of the GNU General Public License as published by *
	12	* the Free Software Foundation; either version 2 of the License, or *
	13	* (at your option) any later version. See also the license.txt file for *
	14	* additional informations. *
	15	* *
	16	***************************************************************************/
	17
	18	#define _IN_FPS
	19
	20	#include <unistd.h>
	21
	22	#include "externals.h"
	23	#include "fps.h"
	24	#include "gpu.h"
	25
	26	// FPS stuff
	27	float fFrameRateHz=0;
	28	DWORD dwFrameRateTicks=16;
	29	float fFrameRate;
	30	int iFrameLimit;
	31	int UseFrameLimit=0;
	32	int UseFrameSkip=0;
	33
	34	// FPS skipping / limit
	35	BOOL bInitCap = TRUE;
	36	float fps_skip = 0;
	37	float fps_cur = 0;
	38
	39	#define MAXLACE 16
	40
	41	void CheckFrameRate(void)
	42	{
	43	if(UseFrameSkip) // skipping mode?
	44	{
	45	if(!(dwActFixes&0x80)) // not old skipping mode?
	46	{
	47	dwLaceCnt++; // -> store cnt of vsync between frames
	48	if(dwLaceCnt>=MAXLACE && UseFrameLimit) // -> if there are many laces without screen toggling,
	49	{ // do std frame limitation
	50	if(dwLaceCnt==MAXLACE) bInitCap=TRUE;
	51	FrameCap();
	52	}
	53	}
	54	else if(UseFrameLimit) FrameCap();
	55	calcfps(); // -> calc fps display in skipping mode
	56	}
	57	else // non-skipping mode:
	58	{
	59	if(UseFrameLimit) FrameCap(); // -> do it
	60	if(ulKeybits&KEY_SHOWFPS) calcfps(); // -> and calc fps display
	61	}
	62	}
	63
	64	#define TIMEBASE 100000
65
66	unsigned long timeGetTime()
67	{
68	struct timeval tv;
69	gettimeofday(&tv, 0); // well, maybe there are better ways
70	return tv.tv_sec * 100000 + tv.tv_usec/10; // to do that, but at least it works
71	}
72
73	void FrameCap (void)
74	{
75	static unsigned long curticks, lastticks, _ticks_since_last_update;
76	static unsigned int TicksToWait = 0;
77	int overslept=0, tickstogo=0;
78	BOOL Waiting = TRUE;
79
80	{
81	curticks = timeGetTime();
82	_ticks_since_last_update = curticks - lastticks;
83
84	if((_ticks_since_last_update > TicksToWait) \|\|
85	(curticks <lastticks))
86	{
87	lastticks = curticks;
88	overslept = _ticks_since_last_update - TicksToWait;
89	if((_ticks_since_last_update-TicksToWait) > dwFrameRateTicks)
90	TicksToWait=0;
91	else
92	TicksToWait=dwFrameRateTicks - overslept;
93	}
94	else
95	{
96	while (Waiting)
97	{
98	curticks = timeGetTime();
99	_ticks_since_last_update = curticks - lastticks;
100	tickstogo = TicksToWait - _ticks_since_last_update;
101	if ((_ticks_since_last_update > TicksToWait) \|\|
102	(curticks < lastticks) \|\| tickstogo < overslept)
103	{
104	Waiting = FALSE;
105	lastticks = curticks;
106	overslept = _ticks_since_last_update - TicksToWait;
107	TicksToWait = dwFrameRateTicks - overslept;
108	return;
109	}
110	if (tickstogo >= 200 && !(dwActFixes&16))
111	usleep(tickstogo*10 - 200);
112	}
113	}
114	}
115	}
116
117	#define MAXSKIP 120
118
119	void FrameSkip(void)
120	{
121	static int iNumSkips=0,iAdditionalSkip=0; // number of additional frames to skip
122	static DWORD dwLastLace=0; // helper var for frame limitation
123	static DWORD curticks, lastticks, _ticks_since_last_update;
124	int tickstogo=0;
125	static int overslept=0;
126
127	if(!dwLaceCnt) return; // important: if no updatelace happened, we ignore it completely
128
129	if(iNumSkips) // we are in skipping mode?
130	{
131	dwLastLace+=dwLaceCnt; // -> calc frame limit helper (number of laces)
132	bSkipNextFrame = TRUE; // -> we skip next frame
133	iNumSkips--; // -> ok, one done
134	}
135	else // ok, no additional skipping has to be done...
136	{ // we check now, if some limitation is needed, or a new skipping has to get started
137	DWORD dwWaitTime;
138
139	if(bInitCap \|\| bSkipNextFrame) // first time or we skipped before?
140	{
141	if(UseFrameLimit && !bInitCap) // frame limit wanted and not first time called?
142	{
143	DWORD dwT=_ticks_since_last_update; // -> that's the time of the last drawn frame
144	dwLastLace+=dwLaceCnt; // -> and that's the number of updatelace since the start of the last drawn frame
145
146	curticks = timeGetTime(); // -> now we calc the time of the last drawn frame + the time we spent skipping
147	_ticks_since_last_update= dwT+curticks - lastticks;
148
149	dwWaitTime=dwLastLace*dwFrameRateTicks; // -> and now we calc the time the real psx would have needed
150
151	if(_ticks_since_last_update<dwWaitTime) // -> we were too fast?
152	{
153	if((dwWaitTime-_ticks_since_last_update)> // -> some more security, to prevent
154	(60*dwFrameRateTicks)) // wrong waiting times
155	_ticks_since_last_update=dwWaitTime;
156
157	while(_ticks_since_last_update<dwWaitTime) // -> loop until we have reached the real psx time
158	{ // (that's the additional limitation, yup)
159	curticks = timeGetTime();
160	_ticks_since_last_update = dwT+curticks - lastticks;
161	}
162	}
163	else // we were still too slow ?!!?
164	{
165	if(iAdditionalSkip<MAXSKIP) // -> well, somewhen we really have to stop skipping on very slow systems
166	{
167	iAdditionalSkip++; // -> inc our watchdog var
168	dwLaceCnt=0; // -> reset lace count
169	lastticks = timeGetTime();
170	return; // -> done, we will skip next frame to get more speed
171	}
172	}
173	}
174
175	bInitCap=FALSE; // -> ok, we have inited the frameskip func
176	iAdditionalSkip=0; // -> init additional skip
177	bSkipNextFrame=FALSE; // -> we don't skip the next frame
178	lastticks = timeGetTime(); // -> we store the start time of the next frame
179	dwLaceCnt=0; // -> and we start to count the laces
180	dwLastLace=0;
181	_ticks_since_last_update=0;
182	return; // -> done, the next frame will get drawn
183	}
184
185	bSkipNextFrame=FALSE; // init the frame skip signal to 'no skipping' first
186
187	curticks = timeGetTime(); // get the current time (we are now at the end of one drawn frame)
188	_ticks_since_last_update = curticks - lastticks;
189
190	dwLastLace=dwLaceCnt; // store curr count (frame limitation helper)
191	dwWaitTime=dwLaceCnt*dwFrameRateTicks; // calc the 'real psx lace time'
192	if (dwWaitTime >= overslept)
193	dwWaitTime-=overslept;
194
195	if(_ticks_since_last_update>dwWaitTime) // hey, we needed way too long for that frame...
196	{
197	if(UseFrameLimit) // if limitation, we skip just next frame,
198	{ // and decide after, if we need to do more
199	iNumSkips=0;
200	}
201	else
202	{
203	iNumSkips=_ticks_since_last_update/dwWaitTime; // -> calc number of frames to skip to catch up
204	iNumSkips--; // -> since we already skip next frame, one down
205	if(iNumSkips>MAXSKIP) iNumSkips=MAXSKIP; // -> well, somewhere we have to draw a line
206	}
207	bSkipNextFrame = TRUE; // -> signal for skipping the next frame
208	}
209	else // we were faster than real psx? fine :)
210	if(UseFrameLimit) // frame limit used? so we wait til the 'real psx time' has been reached
211	{
212	if(dwLaceCnt>MAXLACE) // -> security check
213	_ticks_since_last_update=dwWaitTime;
214
215	while(_ticks_since_last_update<dwWaitTime) // -> just do a waiting loop...
216	{
217	curticks = timeGetTime();
218	_ticks_since_last_update = curticks - lastticks;
219
220	tickstogo = dwWaitTime - _ticks_since_last_update;
221	if (tickstogo-overslept >= 200 && !(dwActFixes&16))
222	usleep(tickstogo*10 - 200);
223	}
224	}
225	overslept = _ticks_since_last_update - dwWaitTime;
226	if (overslept < 0)
227	overslept = 0;
228	lastticks = timeGetTime(); // ok, start time of the next frame
229	}
230
231	dwLaceCnt=0; // init lace counter
232	}
233
234	void calcfps(void)
235	{
236	static unsigned long curticks,_ticks_since_last_update,lastticks;
237	static long fps_cnt = 0;
238	static unsigned long fps_tck = 1;
239	static long fpsskip_cnt = 0;
240	static unsigned long fpsskip_tck = 1;
241
242	{
243	curticks = timeGetTime();
244	_ticks_since_last_update=curticks-lastticks;
245
246	if(UseFrameSkip && !UseFrameLimit && _ticks_since_last_update)
247	fps_skip=min(fps_skip,((float)TIMEBASE/(float)_ticks_since_last_update+1.0f));
248
249	lastticks = curticks;
250	}
251
252	if(UseFrameSkip && UseFrameLimit)
253	{
254	fpsskip_tck += _ticks_since_last_update;
255
256	if(++fpsskip_cnt==2)
257	{
258	fps_skip = (float)2000/(float)fpsskip_tck;
259	fps_skip +=6.0f;
260	fpsskip_cnt = 0;
261	fpsskip_tck = 1;
262	}
263	}
264
265	fps_tck += _ticks_since_last_update;
266
267	if(++fps_cnt==20)
268	{
269	fps_cur = (float)(TIMEBASE*20)/(float)fps_tck;
270
271	fps_cnt = 0;
272	fps_tck = 1;
273
274	//if(UseFrameLimit && fps_cur>fFrameRateHz) // optical adjust ;) avoids flickering fps display
275	//fps_cur=fFrameRateHz;
276	}
277
278	}
279
280	void PCFrameCap (void)
281	{
282	static unsigned long curticks, lastticks, _ticks_since_last_update;
283	static unsigned long TicksToWait = 0;
284	BOOL Waiting = TRUE;
285
286	while (Waiting)
287	{
288	curticks = timeGetTime();
289	_ticks_since_last_update = curticks - lastticks;
290	if ((_ticks_since_last_update > TicksToWait) \|\|
291	(curticks < lastticks))
292	{
293	Waiting = FALSE;
294	lastticks = curticks;
295	TicksToWait = (TIMEBASE/ (unsigned long)fFrameRateHz);
296	}
297	}
298	}
299
300	void PCcalcfps(void)
301	{
302	static unsigned long curticks,_ticks_since_last_update,lastticks;
303	static long fps_cnt = 0;
304	static float fps_acc = 0;
305	float CurrentFPS=0;
306
307	curticks = timeGetTime();
308	_ticks_since_last_update=curticks-lastticks;
309	if(_ticks_since_last_update)
310	CurrentFPS=(float)TIMEBASE/(float)_ticks_since_last_update;
311	else CurrentFPS = 0;
312	lastticks = curticks;
313
314	fps_acc += CurrentFPS;
315
316	if(++fps_cnt==10)
317	{
318	fps_cur = fps_acc / 10;
319	fps_acc = 0;
320	fps_cnt = 0;
321	}
322
323	fps_skip=CurrentFPS+1.0f;
324	}
325
326	void SetAutoFrameCap(void)
327	{
328	if(iFrameLimit==1)
329	{
330	fFrameRateHz = fFrameRate;
331	dwFrameRateTicks=(TIMEBASE100 / (unsigned long)(fFrameRateHz100));
332	return;
333	}
334
335	if(dwActFixes&32)
336	{
337	if (PSXDisplay.Interlaced)
338	fFrameRateHz = PSXDisplay.PAL?50.0f:60.0f;
339	else fFrameRateHz = PSXDisplay.PAL?25.0f:30.0f;
340	}
341	else
342	{
343	fFrameRateHz = PSXDisplay.PAL?50.0f:59.94f;
344	dwFrameRateTicks=(TIMEBASE100 / (unsigned long)(fFrameRateHz100));
345	}
346	}
347
348	void SetFPSHandler(void)
349	{
350	}
351
352	void InitFPS(void)
353	{
354	if(!fFrameRate) fFrameRate=200.0f;
355	if(fFrameRateHz==0) fFrameRateHz=fFrameRate; // set user framerate
356	dwFrameRateTicks=(TIMEBASE / (unsigned long)fFrameRateHz);
357	}