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MTGS sync fixes (thanks XS2, for being such an MTGS bitch) 

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@2246 96395faa-99c1-11dd-bbfe-3dabce05a288
This commit is contained in:
Jake.Stine 2009-11-24 17:13:07 +00:00
parent 2b47122b44
commit 2beae92272
2 changed files with 13 additions and 12 deletions
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2
pcsx2/GS.h
View File

@ -145,7 +145,7 @@ public:
void WaitForOpen();
void Freeze( int mode, MTGS_FreezeData& data );
void RestartRingbuffer( uint packsize=1 );
void RestartRingbuffer( uint packsize=0 );
void SendSimplePacket( MTGS_RingCommand type, int data0, int data1, int data2 );
void SendPointerPacket( MTGS_RingCommand type, u32 data0, void* data1 );

23
pcsx2/MTGS.cpp
View File

@ -426,7 +426,6 @@ void SysMtgsThread::ExecuteTaskInThread()
if( m_SignalRingPosition <= 0 )
{
// Make sure to post the signal after the m_RingPos has been updated...
m_RingPos = newringpos;
AtomicExchange( m_SignalRingEnable, 0 );
m_sem_OnRingReset.Post();
continue;
@ -515,6 +514,8 @@ void SysMtgsThread::SendDataPacket()
uint temp = m_packet_ringpos + m_packet_size;
pxAssert( temp <= RingBufferSize );
temp &= RingBufferMask;
if( temp == 0 )
m_RingWrapSpot = m_WritePos;
if( IsDebugBuild )
{
@ -698,7 +699,7 @@ int SysMtgsThread::PrepDataPacket( GIF_PATH pathidx, const u8* srcdata, u32 size
// buffer (it's a lot easier than trying to wrap the packet around the end of the
// buffer).
Console.WriteLn( "MTGS > Ringbuffer Got Filled!");
//Console.WriteLn( "MTGS > Ringbuffer Got Filled!");
RestartRingbuffer( size );
writepos = m_WritePos;
}
@ -709,12 +710,11 @@ int SysMtgsThread::PrepDataPacket( GIF_PATH pathidx, const u8* srcdata, u32 size
// base of the ringbuffer (otherwise the buffer will stop when the writepos is
// wrapped around to zero later-on in SendDataPacket).
Console.WriteLn( "MTGS > Perfect Fit!");
uint readpos = volatize(m_RingPos);
if( readpos > writepos )
//Console.WriteLn( "MTGS > Perfect Fit!\tringpos=0x%06x, writepos=0x%06x", readpos, writepos );
if( readpos > writepos || readpos == 0 )
{
uint totalAccum = (m_RingWrapSpot - readpos) + writepos;
uint totalAccum = (RingBufferSize - readpos) + writepos;
uint somedone = totalAccum / 4;
if( somedone < size+1 ) somedone = size + 1;
@ -732,13 +732,14 @@ int SysMtgsThread::PrepDataPacket( GIF_PATH pathidx, const u8* srcdata, u32 size
SetEvent();
m_sem_OnRingReset.WaitWithoutYield();
readpos = volatize(m_RingPos);
//Console.WriteLn( Color_Blue, "(MTGS Sync) EEcore Perfect Post-sleep Report!\tringpos=0x%06x", readpos );
Console.WriteLn( Color_Blue, "(MTGS Sync) EEcore Perfect Post-sleep Report!\tringpos=0x%06x", readpos );
} while( (writepos < readpos) || (readpos==0) );
pxAssertDev( m_SignalRingPosition <= 0, "MTGS Thread Synchronization Error" );
}
else
{
//Console.WriteLn( Color_Blue, "(MTGS Sync) EEcore Perfect Spin!" );
SetEvent();
do {
SpinWait();
@ -768,7 +769,7 @@ int SysMtgsThread::PrepDataPacket( GIF_PATH pathidx, const u8* srcdata, u32 size
void SysMtgsThread::RestartRingbuffer( uint packsize )
{
if( m_WritePos == 0 ) return;
const uint thefuture = 0;
const uint thefuture = packsize;
//Console.WriteLn( Color_Magenta, "**** Ringbuffer Restart!!" );
// Always kick the MTGS into action for a ringbuffer restart.
@ -776,12 +777,12 @@ void SysMtgsThread::RestartRingbuffer( uint packsize )
uint readpos = volatize(m_RingPos);
if( (readpos > m_WritePos) || (readpos == thefuture) )
if( (readpos > m_WritePos) || (readpos <= thefuture) )
{
// We have to be careful not to leapfrog our read-position, which would happen if
// it's greater than the current write position (since wrapping writepos to 0 would
// be the act of skipping PAST readpos). Stall until it loops around to the
// beginning of the buffer.
// beginning of the buffer, and past the size of our packet allocation.
m_SignalRingPosition = (readpos - m_WritePos) + packsize + 1;
@ -790,7 +791,7 @@ void SysMtgsThread::RestartRingbuffer( uint packsize )
AtomicExchange( m_SignalRingEnable, 1 );
m_sem_OnRingReset.WaitWithoutYield();
readpos = volatize(m_RingPos);
} while( (readpos > m_WritePos) || (readpos == thefuture) );
} while( (readpos > m_WritePos) || (readpos <= thefuture) );
}
PacketTagType& tag = (PacketTagType&)RingBuffer[m_WritePos];