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I was wrong on the CPEnd issue, which reveals CPBreakpoint > CPEnd is possible and that explains why some BPs could never be achieved before.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5705 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
ayuanx 2010-06-15 09:58:43 +00:00
commit 64299206d1
3 changed files with 20 additions and 11 deletions
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10
Source/Core/VideoCommon/Src/Fifo.cpp
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@ -163,7 +163,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
// If we are in BP mode we only send 32B chunks to Video plugin for BP checking
if (_fifo.bFF_BPEnable)
{
if (readPtr == _fifo.CPBreakpoint)
if ((readPtr <= _fifo.CPBreakpoint) && (readPtr + 32 > _fifo.CPBreakpoint))
{
Common::AtomicStore(_fifo.bFF_Breakpoint, 1);
if (_fifo.bFF_BPInt)
@ -173,7 +173,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
}
distToSend = 32;
if (readPtr + 32 >= _fifo.CPEnd)
if (readPtr >= _fifo.CPEnd)
readPtr = _fifo.CPBase;
else
readPtr += 32;
@ -184,9 +184,9 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
distToSend = _fifo.CPReadWriteDistance;
// send 1024B chunk max length to have better control over PeekMessages' period
distToSend = distToSend > 1024 ? 1024 : distToSend;
if (readPtr + distToSend >= _fifo.CPEnd)
if (readPtr + distToSend >= _fifo.CPEnd + 32)
{
distToSend = _fifo.CPEnd - readPtr;
distToSend = _fifo.CPEnd + 32 - readPtr;
readPtr = _fifo.CPBase;
}
else
@ -208,7 +208,7 @@ void Fifo_EnterLoop(const SVideoInitialize &video_initialize)
VideoFifo_CheckSwapRequest();
}
if (!_fifo.CPReadIdle && _fifo.CPReadWriteDistance <= _fifo.CPLoWatermark)
if (!_fifo.CPReadIdle && _fifo.CPReadWriteDistance < _fifo.CPLoWatermark)
{
Common::AtomicStore(_fifo.CPReadIdle, true);
CommandProcessor::UpdateInterruptsFromVideoPlugin();