pcsx2/plugins/zzogl-pg-cg/opengl/GifTransfer.cpp

289 lines
6.0 KiB
C++
Raw Normal View History

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