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The WGP does not loop if the write pointer is set beyond the end of the fifo. Updated the video plugins this time.

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git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4531 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
donkopunchstania
2009-11-12 01:51:40 +00:00
parent ebc696c58e
commit dee90fa7aa
3 changed files with 21 additions and 17 deletions
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19
Source/Core/VideoCommon/Src/CommandProcessor.cpp
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@ -590,9 +590,11 @@ void STACKALIGN GatherPipeBursted()
if (g_VideoInitialize.bOnThread)
{
// update the fifo-pointer
fifo.CPWritePointer += GATHER_PIPE_SIZE;
if (fifo.CPWritePointer >= fifo.CPEnd)
if (fifo.CPWritePointer >= fifo.CPEnd)
fifo.CPWritePointer = fifo.CPBase;
else
fifo.CPWritePointer += GATHER_PIPE_SIZE;
Common::AtomicAdd(fifo.CPReadWriteDistance, GATHER_PIPE_SIZE);
// High watermark overflow handling (hacked way)
@ -626,9 +628,10 @@ void STACKALIGN GatherPipeBursted()
}
else
{
fifo.CPWritePointer += GATHER_PIPE_SIZE;
if (fifo.CPWritePointer >= fifo.CPEnd)
fifo.CPWritePointer = fifo.CPBase;
else
fifo.CPWritePointer += GATHER_PIPE_SIZE;
// check if we are in sync
_assert_msg_(COMMANDPROCESSOR, fifo.CPWritePointer == *(g_VideoInitialize.Fifo_CPUWritePointer), "FIFOs linked but out of sync");
_assert_msg_(COMMANDPROCESSOR, fifo.CPBase == *(g_VideoInitialize.Fifo_CPUBase), "FIFOs linked but out of sync");
@ -666,14 +669,11 @@ void CatchUpGPU()
}
// read the data and send it to the VideoPlugin
fifo.CPReadPointer += 32;
// We are going to do FP math on the main thread so have to save the current state
SaveSSEState();
LoadDefaultSSEState();
Fifo_SendFifoData(ptr,32);
LoadSSEState();
// adjust
ptr += 32;
fifo.CPReadWriteDistance -= 32;
@ -685,6 +685,11 @@ void CatchUpGPU()
ptr = Memory_GetPtr(fifo.CPReadPointer);
INFO_LOG(COMMANDPROCESSOR, "BUFFER LOOP");
}
else
{
fifo.CPReadPointer += 32;
ptr += 32;
}
}
}
}
@ -712,7 +717,7 @@ void UpdateFifoRegister()
if (wp >= rp)
dist = wp - rp;
else
dist = (wp - fifo.CPBase) + (fifo.CPEnd - rp);
dist = (wp - fifo.CPBase) + ((fifo.CPEnd + GATHER_PIPE_SIZE) - rp);
Common::AtomicStore(fifo.CPReadWriteDistance, dist);