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Improved handling of read/write cycles in VIF UNPACK.

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Now properly works with cases such as cl == 0 or wl == 0 and also
handles "interrupted" transfers better.
This commit is contained in:
Jean-Philip Desjardins 2015-12-05 17:03:37 -05:00
parent 260a622a18
commit 1cef991290
1 changed files with 11 additions and 3 deletions
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14
Source/ee/Vif.cpp
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@ -566,6 +566,7 @@ void CVif::Cmd_UNPACK(StreamType& stream, CODE nCommand, uint32 nDstAddr)
bool useMask = (nCommand.nCMD & 0x10) != 0;
uint32 cl = m_CYCLE.nCL;
uint32 wl = m_CYCLE.nWL;
if(wl == 0) wl = UINT_MAX;
if(m_NUM == nCommand.nNUM)
{
@ -576,14 +577,21 @@ void CVif::Cmd_UNPACK(StreamType& stream, CODE nCommand, uint32 nDstAddr)
uint32 currentNum = (m_NUM == 0) ? 256 : m_NUM;
uint32 codeNum = (m_CODE.nNUM == 0) ? 256 : m_CODE.nNUM;
uint32 transfered = codeNum - currentNum;
assert(transfered == 0 || cl == wl); //The value above is only valid for specific combinations of cl and wl
nDstAddr += transfered;
if(cl > wl)
{
nDstAddr += cl * (transfered / wl) + (transfered % wl);
}
else
{
nDstAddr += transfered;
}
nDstAddr *= 0x10;
uint128* dst = reinterpret_cast<uint128*>(m_vpu.GetVuMemory() + nDstAddr);
while((currentNum != 0) && stream.GetAvailableReadBytes())
while(currentNum != 0)
{
bool mustWrite = false;
uint128 writeValue;