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115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
#pragma once
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#include "maybe_unused.h"
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#include "GSHandler.h"
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namespace GsTransfer
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{
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struct TransferRangeSrc
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{
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static uint32 GetBufferAddress(const CGSHandler::BITBLTBUF& bltBuf)
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{
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return bltBuf.GetSrcPtr();
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}
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static uint32 GetBufferWidth(const CGSHandler::BITBLTBUF& bltBuf)
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{
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return bltBuf.GetSrcWidth();
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}
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static uint32 GetBufferPsm(const CGSHandler::BITBLTBUF& bltBuf)
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{
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return bltBuf.nSrcPsm;
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}
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static uint32 GetSAX(const CGSHandler::TRXPOS& trxPos)
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{
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return trxPos.nSSAX;
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}
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static uint32 GetSAY(const CGSHandler::TRXPOS& trxPos)
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{
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return trxPos.nSSAY;
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}
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};
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struct TransferRangeDst
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{
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static uint32 GetBufferAddress(const CGSHandler::BITBLTBUF& bltBuf)
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{
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return bltBuf.GetDstPtr();
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}
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static uint32 GetBufferWidth(const CGSHandler::BITBLTBUF& bltBuf)
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{
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return bltBuf.GetDstWidth();
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}
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static uint32 GetBufferPsm(const CGSHandler::BITBLTBUF& bltBuf)
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{
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return bltBuf.nDstPsm;
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}
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static uint32 GetSAX(const CGSHandler::TRXPOS& trxPos)
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{
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return trxPos.nDSAX;
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}
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static uint32 GetSAY(const CGSHandler::TRXPOS& trxPos)
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{
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return trxPos.nDSAY;
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}
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};
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template <typename TransferRangeTraits>
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static std::pair<uint32, uint32> GetRange(const CGSHandler::BITBLTBUF& bltBuf, const CGSHandler::TRXREG& trxReg, const CGSHandler::TRXPOS& trxPos)
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{
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uint32 transferAddress = TransferRangeTraits::GetBufferAddress(bltBuf);
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uint32 psm = TransferRangeTraits::GetBufferPsm(bltBuf);
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//Find the pages that are touched by this transfer
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auto transferPageSize = CGsPixelFormats::GetPsmPageSize(psm);
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// DBZ Budokai Tenkaichi 2 and 3 use invalid (empty) buffer sizes
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// Account for that, by assuming trxReg.nRRW.
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auto width = TransferRangeTraits::GetBufferWidth(bltBuf);
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if(width == 0)
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{
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width = trxReg.nRRW;
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}
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assert(trxReg.nRRW != 0);
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assert(trxReg.nRRH != 0);
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//Since there's a possibility of using RRW for the buffer width, we need to round up
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uint32 pagePitch = (width + transferPageSize.first - 1) / transferPageSize.first;
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uint32 sax = TransferRangeTraits::GetSAX(trxPos);
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uint32 say = TransferRangeTraits::GetSAY(trxPos);
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uint32 pageStartX = sax / transferPageSize.first;
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uint32 pageStartY = say / transferPageSize.second;
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uint32 pageEndX = (sax + trxReg.nRRW - 1) / transferPageSize.first;
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uint32 pageEndY = (say + trxReg.nRRH - 1) / transferPageSize.second;
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//Single page transfer
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if((pageStartX == pageEndX) && (pageStartY == pageEndY))
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{
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uint32 transferPage = (pageStartY * pagePitch) + pageStartX;
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uint32 transferOffset = transferPage * CGsPixelFormats::PAGESIZE;
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return std::make_pair(transferAddress + transferOffset, CGsPixelFormats::PAGESIZE);
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}
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uint32 pageCountY = pageEndY - pageStartY + 1;
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uint32 pageCount = pagePitch * pageCountY;
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uint32 transferSize = pageCount * CGsPixelFormats::PAGESIZE;
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uint32 transferOffset = ((pageStartY * pagePitch) + pageStartX) * CGsPixelFormats::PAGESIZE;
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return std::make_pair(transferAddress + transferOffset, transferSize);
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}
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FRAMEWORK_MAYBE_UNUSED
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static auto GetSrcRange(const CGSHandler::BITBLTBUF& bltBuf, const CGSHandler::TRXREG& trxReg, const CGSHandler::TRXPOS& trxPos)
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{
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return GetRange<TransferRangeSrc>(bltBuf, trxReg, trxPos);
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}
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FRAMEWORK_MAYBE_UNUSED
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static auto GetDstRange(const CGSHandler::BITBLTBUF& bltBuf, const CGSHandler::TRXREG& trxReg, const CGSHandler::TRXPOS& trxPos)
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{
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return GetRange<TransferRangeDst>(bltBuf, trxReg, trxPos);
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}
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}
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