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new frameskip algorithm, update makefiles

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This commit is contained in:
dborth 2008-10-11 06:15:20 +00:00
parent a8132e05fb
commit c78b4b8a3a
3 changed files with 27 additions and 18 deletions
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3
Makefile.gc
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@ -26,7 +26,8 @@ INCLUDES := source/vba source/ngc
#---------------------------------------------------------------------------------
CFLAGS = -g -O3 -Wall $(MACHDEP) $(INCLUDE) \
-DNGC -DUSE_VM -DWORDS_BIGENDIAN -DC_CORE -DFINAL_VERSION \
-DNGC -DUSE_VM -DWORDS_BIGENDIAN \
-DC_CORE -D__ppc__ -D__POWERPC__ -DFINAL_VERSION \
-DSDL -DNO_PNG -DHAVE_ZUTIL_H
CXXFLAGS = $(CFLAGS)
LDFLAGS = -g $(MACHDEP) -Wl,-Map,$(notdir $@).map

3
Makefile.wii
View File

@ -26,7 +26,8 @@ INCLUDES := source/vba source/ngc
#---------------------------------------------------------------------------------
CFLAGS = -g -O3 -Wall $(MACHDEP) $(INCLUDE) \
-DNGC -DWII_DVD -DWORDS_BIGENDIAN -DC_CORE -D__ppc__ -DFINAL_VERSION \
-DNGC -DWII_DVD -DWORDS_BIGENDIAN -DVIDEO_THREADING \
-DC_CORE -D__ppc__ -D__POWERPC__ -DFINAL_VERSION \
-DSDL -DNO_PNG -DHAVE_ZUTIL_H
CXXFLAGS = $(CFLAGS)
LDFLAGS = -g $(MACHDEP) -Wl,-Map,$(notdir $@).map -Wl,--cref

39
source/ngc/vbasupport.cpp
View File

@ -47,9 +47,6 @@ static tb_t start, now;
u32 loadtimeradjust;
static u32 autoFrameSkipLastTime = 0;
static int frameskipadjust = 0;
int vAspect = 0;
int hAspect = 0;
@ -132,20 +129,38 @@ void GC_Sleep(u32 dwMiliseconds)
}
}
*/
static u32 autoFrameSkipLastTime = 0;
void system10Frames(int rate)
{
if ( cartridgeType == 1 )
if (cartridgeType == 1)
return;
u32 time = systemGetClock();
u32 diff = time - autoFrameSkipLastTime;
// difference should be 1/6 second or (1/6)*1000 ms or 167 ms
int timeOff = (167 - diff);
if(timeOff > 3 && timeOff < 60) // we're running ahead!
usleep(timeOff*1000); // let's take a nap
else
timeOff = 0; // timeoff was not valid
if(diff > 175 && systemFrameSkip < 9)
systemFrameSkip++;
else if(diff < 150 && systemFrameSkip > 0)
systemFrameSkip--;
autoFrameSkipLastTime = time + timeOff; // total time = processing time + sleep time
/*
// Original VBA SDL frameskip algorithm
int speed = 100;
if(diff)
speed = (1000000/rate)/diff;
/* char temp[512];
sprintf(temp,"Speed: %i",speed);
MENU_DrawString( -1, 450,temp , 1 ); */
if(speed >= 98)
{
@ -174,6 +189,7 @@ void system10Frames(int rate)
}
autoFrameSkipLastTime = time;
*/
}
/****************************************************************************
@ -518,15 +534,6 @@ void systemDrawScreen()
{
// GB / GBC Have oodles of time - so sync on VSync
GX_Render( srcWidth, srcHeight, pix, srcPitch );
/*#ifdef HW_RVL
VIDEO_WaitVSync ();
#else
if ( cartridgeType == 1 )
{
VIDEO_WaitVSync();
}
#endif*/
}
extern bool gbUpdateSizes();