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Optimize rendering so it doesn't hog the CPU

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This commit is contained in:
michaelangel007 2015-01-02 17:56:16 -08:00
parent c3470c6e6f
commit e98a0f5f7e
6 changed files with 25 additions and 32 deletions
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5
source/CPU/cpu6502.h
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@ -322,10 +322,7 @@ static DWORD Cpu6502 (DWORD uTotalCycles)
// NTSC_BEGIN
uElapsedCycles = uExecutedCycles - uPreviousCycles;
if( g_bFullSpeed )
NTSC_VideoUpdateCycles( uElapsedCycles );
else
g_pFunc_NTSCVideoUpdateGraphics( uElapsedCycles );
NTSC_VideoUpdateCycles( uElapsedCycles );
// NTSC_END
CheckInterruptSources(uExecutedCycles);

5
source/CPU/cpu65C02.h
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@ -326,10 +326,7 @@ static DWORD Cpu65C02 (DWORD uTotalCycles)
// NTSC_BEGIN
uElapsedCycles = uExecutedCycles - uPreviousCycles;
if( g_bFullSpeed )
NTSC_VideoUpdateCycles( uElapsedCycles );
else
g_pFunc_NTSCVideoUpdateGraphics( uElapsedCycles );
NTSC_VideoUpdateCycles( uElapsedCycles );
// NTSC_END
CheckInterruptSources(uExecutedCycles);

5
source/CPU/cpu65d02.h
View File

@ -655,10 +655,7 @@ static DWORD Cpu65D02 (DWORD uTotalCycles)
// NTSC_BEGIN
uElapsedCycles = uExecutedCycles - uPreviousCycles;
if( g_bFullSpeed )
NTSC_VideoUpdateCycles( uElapsedCycles );
else
g_pFunc_NTSCVideoUpdateGraphics( uElapsedCycles );
NTSC_VideoUpdateCycles( uElapsedCycles );
// NTSC_END
CheckInterruptSources(uExecutedCycles);

32
source/NTSC.cpp
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@ -132,6 +132,17 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
bgra_t *g_pVideoAddress;
bgra_t *g_aNTSC_Lines[VIDEO_SCANNER_Y_DISPLAY*2]; // To maintain the 280x192 aspect ratio for 560px width, we double every scan line -> 560x384
static unsigned (*g_pHorzClockOffset)[VIDEO_SCANNER_MAX_HORZ] = 0;
typedef void (*Func_t)(long);
static Func_t g_apFuncVideoUpdateScanline[VIDEO_SCANNER_Y_DISPLAY];
static void (* g_pFunc_NTSCVideoUpdateText )(long) = 0; // NTSC_UpdateVideoText40;
void (* g_pFunc_NTSCVideoUpdateGraphics)(long) = 0; // NTSC_UpdateVideoText40;
static void (*g_pFunc_ntscMonoPixel )(int) = 0; //ntscMonoSinglePixel ;
static void (*g_pFunc_ntscColorPixel)(int) = 0; //ntscColorSinglePixel;
static unsigned g_nTextFlashCounter = 0;
static uint16_t g_nTextFlashMask = 0;
@ -368,17 +379,6 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
};
static unsigned (*g_pHorzClockOffset)[VIDEO_SCANNER_MAX_HORZ] = 0;
static void (* g_pFunc_NTSCVideoUpdateText )(long) = 0; // NTSC_UpdateVideoText40;
void (* g_pFunc_NTSCVideoUpdateGraphics)(long) = 0; // NTSC_UpdateVideoText40;
static void (*g_pFunc_ntscMonoPixel )(int) = 0; //ntscMonoSinglePixel ;
static void (*g_pFunc_ntscColorPixel)(int) = 0; //ntscColorSinglePixel;
typedef void (*Func_t)(long);
static Func_t g_apFuncVideoUpdateScanline[VIDEO_SCANNER_Y_DISPLAY];
// Prototypes
// prototype from CPU.h
//unsigned char CpuRead(unsigned short addr, unsigned long uExecutedCycles);
@ -1479,11 +1479,15 @@ int NTSC_VideoIsVbl ()
//===========================================================================
void NTSC_VideoUpdateCycles( long cycles6502 )
{
bool bRedraw = false;
bool bRedraw = cycles6502 >= VIDEO_SCANNER_6502_CYCLES;
// if( !g_bFullSpeed )
// if( g_bFullSpeed )
// g_pFunc_NTSCVideoUpdateGraphics( cycles6502 );
// else
while( cycles6502 > VIDEO_SCANNER_6502_CYCLES )
/* */ cycles6502 -= VIDEO_SCANNER_6502_CYCLES ;
for( ; cycles6502 > 0; cycles6502-- )
{
if (VIDEO_SCANNER_MAX_HORZ == ++g_nVideoClockHorz)
@ -1515,9 +1519,7 @@ void NTSC_VideoUpdateCycles( long cycles6502 )
if( bRedraw ) // Force full refresh
{
for( int y = 0; y < VIDEO_SCANNER_Y_DISPLAY; y++ )
{
g_apFuncVideoUpdateScanline[ y ]( VIDEO_SCANNER_MAX_HORZ );
}
int nCyclesVBlank = (VIDEO_SCANNER_MAX_VERT - VIDEO_SCANNER_Y_DISPLAY) * VIDEO_SCANNER_MAX_HORZ;
g_pFunc_NTSCVideoUpdateGraphics( nCyclesVBlank );

4
source/NTSC.h
View File

@ -1,9 +1,9 @@
#define VIDEO_SCANNER_6502_CYCLES 17030
// Constants
const int VIDEO_SCANNER_6502_CYCLES = 17030;
// Globals (Public)
extern uint16_t g_nVideoClockVert;
extern uint16_t g_nVideoClockHorz;
extern void (* g_pFunc_NTSCVideoUpdateGraphics)(long);
// Prototypes (Public) ________________________________________________
extern void NTSC_SetVideoTextMode( int cols );

6
source/Video.cpp
View File

@ -1266,7 +1266,7 @@ void VideoRefreshScreen ( int bVideoModeFlags )
if( bVideoModeFlags )
{
NTSC_SetVideoMode( bVideoModeFlags );
g_pFunc_NTSCVideoUpdateGraphics( VIDEO_SCANNER_6502_CYCLES );
NTSC_VideoUpdateCycles( VIDEO_SCANNER_6502_CYCLES );
}
// NTSC_BEGIN: wsVideoRefresh()
@ -1341,7 +1341,7 @@ BYTE VideoSetMode (WORD, WORD address, BYTE write, BYTE, ULONG uExecutedCycles)
// NTSC_BEGIN
NTSC_SetVideoMode( g_uVideoMode );
// NTSC_END
#if 0 // NTSC_CLEANUP: Is this still needed??
if (SW_80STORE)
g_uVideoMode &= ~VF_PAGE2;
@ -1364,7 +1364,7 @@ BYTE VideoSetMode (WORD, WORD address, BYTE write, BYTE, ULONG uExecutedCycles)
g_bVideoUpdatedThisFrame = true;
}
}
#endif // NTSC_CLEANUP
return MemReadFloatingBus(uExecutedCycles);
}