mirror of https://github.com/PCSX2/pcsx2.git
289 lines
6.0 KiB
C++
289 lines
6.0 KiB
C++
/* ZZ Open GL graphics plugin
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* Copyright (c)2009-2010 zeydlitz@gmail.com, arcum42@gmail.com
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* Based on Zerofrog's ZeroGS KOSMOS (c)2005-2008
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "GS.h"
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#include "Mem.h"
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#include "GifTransfer.h"
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#ifdef _DEBUG
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static int path1_count = 0;
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#endif
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static int nPath3Hack = 0;
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void CALLBACK GSgetLastTag(u64* ptag)
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{
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FUNCLOG
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*(u32*)ptag = nPath3Hack;
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nPath3Hack = 0;
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}
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#ifdef _WIN32
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// for debug assertion checks (thread affinity checks)
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extern HANDLE g_hCurrentThread;
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#endif
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__forceinline void gifTransferLog(int index, const u32 *pMem, u32 size)
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{
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#ifdef DEBUG_TRANSFER
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if (conf.log)
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{
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static int nSaveIndex = 0;
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ZZLog::Debug_Log("%d: p:%d %x", nSaveIndex++, index + 1, size);
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int vals[4] = {0};
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for (u32 i = 0; i < size; i++)
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{
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for (u32 j = 0; j < 4; ++j)
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vals[j] ^= pMem[4*i+j];
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}
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ZZLog::Debug_Log("%x %x %x %x", vals[0], vals[1], vals[2], vals[3]);
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}
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#endif
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}
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extern int g_GSMultiThreaded;
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template<int index> void _GSgifTransfer(const u32 *pMem, u32 size)
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{
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FUNCLOG
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pathInfo *path = &gs.path[index];
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#ifdef _WIN32
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assert(g_hCurrentThread == GetCurrentThread());
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#endif
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#ifdef _DEBUG
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gifTransferLog(index, pMem, size);
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const u32* start = pMem;
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u32 size_arg = size;
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#endif
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while (size > 0)
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{
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//LOG(_T("Transfer(%08x, %d) START\n"), pMem, size);
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if (path->nloop == 0)
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{
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path->setTag(pMem);
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pMem += 4;
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size--;
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// eeuser 7.2.2. GIFtag: "... when NLOOP is 0, the GIF does not output anything, and
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// values other than the EOP field are disregarded."
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if (path->nloop > 0)
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{
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gs.q = 1.0f;
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if (path->tag.PRE && (path->tag.FLG == GIF_FLG_PACKED))
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{
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u32 tagprim = path->tag.PRIM;
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GIFRegHandlerPRIM((u32*)&tagprim);
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}
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}
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}
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else
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{
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switch (path->mode)
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{
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case GIF_FLG_PACKED:
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{
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// Needs to be looked at.
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// first try a shortcut for a very common case
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if (path->adonly && size >= path->nloop)
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{
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size -= path->nloop;
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do
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{
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GIFPackedRegHandlerA_D(pMem);
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pMem += 4; //sizeof(GIFPackedReg)/4;
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}
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while(--path->nloop > 0);
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break;
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}
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do
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{
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u32 reg = path->GetReg();
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g_GIFPackedRegHandlers[reg](pMem);
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pMem += 4; //sizeof(GIFPackedReg)/4;
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size--;
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}
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while (path->StepReg() && (size > 0));
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break;
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}
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case GIF_FLG_REGLIST:
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{
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// Needs to be looked at.
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//ZZLog::GS_Log("%8.8x%8.8x %d L", ((u32*)&gs.regs)[1], *(u32*)&gs.regs, path->tag.nreg/4);
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size *= 2;
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do
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{
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g_GIFRegHandlers[path->GetReg()](pMem);
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pMem += 2;
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size--;
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}
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while (path->StepReg() && (size > 0));
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if (size & 1) pMem += 2;
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size /= 2;
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break;
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}
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case GIF_FLG_IMAGE: // FROM_VFRAM
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case GIF_FLG_IMAGE2: // Used in the DirectX version, so we'll use it here too.
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{
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int len = min(size, path->nloop);
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//ZZLog::Error_Log("GIF_FLG_IMAGE(%d)=%d", gs.imageTransfer, len);
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switch (gs.imageTransfer)
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{
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case 0:
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TransferHostLocal(pMem, len * 4);
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break;
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case 1:
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// This can't happen; downloads can not be started or performed as part of
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// a GIFtag operation. They're an entirely separate process that can only be
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// done through the ReverseFIFO transfer (aka ReadFIFO). --air
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assert(0);
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//TransferLocalHost(pMem, len);
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break;
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case 2:
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//TransferLocalLocal();
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break;
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case 3:
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//assert(0);
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break;
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default:
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//assert(0);
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break;
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}
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pMem += len * 4;
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path->nloop -= len;
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size -= len;
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break;
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}
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default: // GIF_IMAGE
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ZZLog::GS_Log("*** WARNING **** Unexpected GIFTag flag.");
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assert(0);
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path->nloop = 0;
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break;
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}
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}
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if (index == 0)
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{
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if (path->tag.EOP && path->nloop == 0)
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{
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break;
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}
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}
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}
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#ifdef _DEBUG
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g_dump.Transfer(index, start, pMem - start, size_arg);
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#endif
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// This is the case when not all data was readed from one try: VU1 has too much data.
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// So we should redo reading from the start.
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if (index == 0)
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{
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if (size == 0 && path->nloop > 0)
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{
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if (g_GSMultiThreaded)
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{
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path->nloop = 0;
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}
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else
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{
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_GSgifTransfer<0>(pMem - 0x4000, 0x4000 / 16);
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}
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}
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}
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}
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void CALLBACK GSgifTransfer1(u32 *pMem, u32 addr)
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{
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FUNCLOG
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//ZZLog::GS_Log("GSgifTransfer1 0x%x (mode %d).", addr, path->mode);
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#ifdef _DEBUG
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ZZLog::Prim_Log("count: %d\n", path1_count);
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path1_count++;
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#endif
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_GSgifTransfer<0>((u32*)((u8*)pMem + addr), (0x4000 - addr) / 16);
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}
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void CALLBACK GSgifTransfer2(u32 *pMem, u32 size)
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{
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FUNCLOG
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//ZZLog::GS_Log("GSgifTransfer2 size = %lx (mode %d, gs.path2.tag.nloop = %d).", size, gs.path[1].mode, gs.path[1].tag.nloop);
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_GSgifTransfer<1>(const_cast<u32*>(pMem), size);
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}
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void CALLBACK GSgifTransfer3(u32 *pMem, u32 size)
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{
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FUNCLOG
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//ZZLog::GS_Log("GSgifTransfer3 size = %lx (mode %d, gs.path3.tag.nloop = %d).", size, gs.path[2].mode, gs.path[2].tag.nloop);
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_GSgifTransfer<2>(const_cast<u32*>(pMem), size);
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}
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void CALLBACK GSgifTransfer(const u32 *pMem, u32 size)
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{
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FUNCLOG
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//ZZLog::GS_Log("GSgifTransfer3 size = %lx (mode %d, gs.path3.tag.nloop = %d).", size, gs.path[2].mode, gs.path[2].tag.nloop);
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_GSgifTransfer<3>(pMem, size);
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}
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void InitPath()
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{
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gs.path[0].mode = gs.path[1].mode = gs.path[2].mode = gs.path[3].mode = 0;
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}
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