miguel.horta/commandergenius
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Main Changes:

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- Added automatic frameskip support
- Improved Timers speed

git-svn-id: https://clonekeenplus.svn.sourceforge.net/svnroot/clonekeenplus/cgenius/trunk@6 4df4b0f3-56ce-47cb-b001-ed939b7d65a6
This commit is contained in:
gerstrong
2009-06-07 11:44:08 +00:00
parent 563103b890
commit 8352242dc6
17 changed files with 194 additions and 57 deletions
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69
src/sdl/CTimer.cpp
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@@ -8,24 +8,9 @@
#include "../keen.h"
#include "../keenext.h"
#include <SDL.h>
#include "CTimer.h"
typedef char int8;
typedef short int16;
typedef long int32;
typedef unsigned char uint8;
typedef unsigned short uint16;
typedef unsigned long uint32;
#ifdef __GNUC__
typedef unsigned long long uint64;
typedef long long int64;
#define INLINE inline
#define GINLINE inline
#endif
#include "CVideoDriver.h"
Uint32 FPSCallback(Uint32 interval, void* param);
@@ -38,6 +23,34 @@ Uint32 FPSCallback(Uint32 interval, void* param)
{
fps = (curfps << 1);
curfps = 0;
unsigned char targetfps;
targetfps = g_pVideoDriver->getTargetFPS();
if(targetfps > 0)
{
if(fps > targetfps + 10)
{
uint8 fsk;
fsk = g_pVideoDriver->getFrameskip();
if(fsk < 20)
fsk++;
g_pVideoDriver->setFrameskip(fsk);
}
else if( fps < targetfps - 10)
{
uint8 fsk;
fsk = g_pVideoDriver->getFrameskip();
if(fsk > 0)
fsk--;
g_pVideoDriver->setFrameskip(fsk);
}
}
return interval;
}
@@ -45,6 +58,9 @@ CTimer::CTimer() {
RefreshThrottleFPS();
if(SDL_Init(SDL_INIT_TIMER) == 0)
ckp_timer_id = SDL_AddTimer(1000, FPSCallback, NULL);
ltime = 0;
m_frameskip = 0;
}
CTimer::~CTimer() {
@@ -53,22 +69,23 @@ CTimer::~CTimer() {
void CTimer::SpeedThrottle(void)
{
static uint64 ttime,ltime=0;
//regulateFrameskip();
waiter:
ttime=SDL_GetTicks();
ttime*=10000;
//ttime*=10000;
ttime<<=14;
if( (ttime-ltime) < (tfreq/desiredfps) )
{
int64 delay;
delay=(tfreq/desiredfps)-(ttime-ltime);
if(delay>0)
SDL_Delay(delay/10000);
goto waiter;
delay=(tfreq/desiredfps)-(ttime-ltime);
if(delay>0)
//SDL_Delay(delay/10000);
SDL_Delay(delay>>14);
goto waiter;
}
if( (ttime-ltime) >= (tfreq*4/desiredfps))
if( (ttime-ltime) >= ((tfreq<<2)/desiredfps) )
ltime=ttime;
else
ltime+=tfreq/desiredfps;
@@ -77,8 +94,8 @@ void CTimer::RefreshThrottleFPS(void)
{
// desiredfps=FCEUI_GetDesiredFPS()>>8;
// desiredfps = 23000000;
desiredfps = 21800000;
//desiredfps = 21800000;
desiredfps = 13600000;
tfreq=10000000;
tfreq<<=16; /* Adjustment for fps returned from FCEUI_GetDesiredFPS(). */
}