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GSnull: Add some Gif Transfer code from pcsx2 (not currently hooked in).
git-svn-id: http://pcsx2.googlecode.com/svn/trunk@1185 96395faa-99c1-11dd-bbfe-3dabce05a288
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arcum42
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239
plugins/GSnull/GifTransfer.cpp
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239
plugins/GSnull/GifTransfer.cpp
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/* GSnull
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* Copyright (C) 2004-2009 PCSX2 Team
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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// Processes a GIFtag & packet, and throws out some gsIRQs as needed.
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// Used to keep interrupts in sync with the EE, while the GS itself
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// runs potentially several frames behind.
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// size - size of the packet in simd128's
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#include "GS.h"
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#include "GifTransfer.h"
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using namespace std;
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static void RegHandlerSIGNAL(const u32* data)
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{
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//MTGS_LOG("MTGS SIGNAL data %x_%x CSRw %x\n",data[0], data[1], CSRw);
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//GSSIGLBLID->SIGID = (GSSIGLBLID->SIGID&~data[1])|(data[0]&data[1]);
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//if ((CSRw & 0x1)) GSCSRr |= 1; // signal
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//if (!(GSIMR&0x100) ) gsIrq();
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}
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static void RegHandlerFINISH(const u32* data)
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{
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//MTGS_LOG("MTGS FINISH data %x_%x CSRw %x\n",data[0], data[1], CSRw);
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//if ((CSRw & 0x2)) GSCSRr |= 2; // finish
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//if (!(GSIMR&0x200) ) gsIrq();
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}
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static void RegHandlerLABEL(const u32* data)
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{
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//GSSIGLBLID->LBLID = (GSSIGLBLID->LBLID&~data[1])|(data[0]&data[1]);
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}
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typedef void (*GIFRegHandler)(const u32* data);
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static GIFRegHandler s_GSHandlers[3] =
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{
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RegHandlerSIGNAL, RegHandlerFINISH, RegHandlerLABEL
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};
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__forceinline void GIFPath::PrepRegs()
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{
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if( tag.nreg == 0 )
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{
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u32 tempreg = tag.regs[0];
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for(u32 i=0; i<16; ++i, tempreg >>= 4)
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{
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if( i == 8 ) tempreg = tag.regs[1];
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assert( (tempreg&0xf) < 0x64 );
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regs[i] = tempreg & 0xf;
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}
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}
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else
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{
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u32 tempreg = tag.regs[0];
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for(u32 i=0; i<tag.nreg; ++i, tempreg >>= 4)
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{
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assert( (tempreg&0xf) < 0x64 );
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regs[i] = tempreg & 0xf;
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}
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}
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}
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void GIFPath::SetTag(const void* mem)
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{
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tag = *((GIFTAG*)mem);
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curreg = 0;
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PrepRegs();
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}
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u32 GIFPath::GetReg()
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{
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return regs[curreg];
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}
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__forceinline u32 _gifTransfer( GIF_PATH pathidx, const u8* pMem, u32 size )
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{
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GIFPath& path = m_path[pathidx];
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while(size > 0)
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{
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bool eop = false;
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if(path.tag.nloop == 0)
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{
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path.SetTag( pMem );
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pMem += sizeof(GIFTAG);
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--size;
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if(pathidx == 2 && path.tag.eop)
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Path3transfer = FALSE;
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if( pathidx == 0 )
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{
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// hack: if too much data for VU1, just ignore.
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// The GIF is evil : if nreg is 0, it's really 16. Otherwise it's the value in nreg.
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const int numregs = ((path.tag.nreg - 1) & 15) + 1;
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if((path.tag.nloop * numregs) > (size * ((path.tag.flg == 1) ? 2 : 1)))
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{
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path.tag.nloop = 0;
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return ++size;
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}
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}
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if(path.tag.eop)
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{
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eop = true;
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}
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else if(path.tag.nloop == 0)
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{
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if(pathidx == 0)
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continue;
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eop = true;
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}
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}
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if(path.tag.nloop > 0)
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{
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switch(path.tag.flg)
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{
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case GIF_FLG_PACKED:
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while(size > 0)
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{
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if( path.GetReg() == 0xe )
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{
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const int handler = pMem[8];
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if(handler >= 0x60 && handler < 0x63)
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s_GSHandlers[handler & 0x3]((const u32*)pMem);
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}
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size--;
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pMem += 16; // 128 bits! //sizeof(GIFPackedReg);
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if((++path.curreg & 0xf) == path.tag.nreg)
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{
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path.curreg = 0;
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path.tag.nloop--;
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if(path.tag.nloop == 0)
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break;
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}
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}
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break;
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case GIF_FLG_REGLIST:
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size *= 2;
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while(size > 0)
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{
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const int handler = path.GetReg();
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if (handler >= 0x60 && handler < 0x63)
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s_GSHandlers[handler&0x3]((const u32*)pMem);
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size--;
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pMem += 8; //sizeof(GIFReg); -- 64 bits!
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if((++path.curreg & 0xf) == path.tag.nreg)
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{
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path.curreg = 0;
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path.tag.nloop--;
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if(path.tag.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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if (size & 1) pMem += 8; //sizeof(GIFReg);
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size /= 2;
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break;
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case GIF_FLG_IMAGE2: // hmmm
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assert(0);
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path.tag.nloop = 0;
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break;
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case GIF_FLG_IMAGE:
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{
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int len = (int)min(size, path.tag.nloop);
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pMem += len * 16;
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path.tag.nloop -= len;
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size -= len;
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}
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break;
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jNO_DEFAULT;
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}
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}
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if (eop && ((int)size <= 0 || pathidx == 0))
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{
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break;
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}
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}
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if(pathidx == 0)
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{
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if (!path.tag.eop && path.tag.nloop > 0)
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{
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path.tag.nloop = 0;
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SysPrintf( "path1 hack! " );
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// This means that the giftag data got screwly somewhere
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// along the way (often means curreg was in a bad state or something)
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}
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}
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return size;
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}
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88
plugins/GSnull/GifTransfer.h
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88
plugins/GSnull/GifTransfer.h
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@ -0,0 +1,88 @@
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/* GSnull
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* Copyright (C) 2004-2009 PCSX2 Team
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <assert.h>
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#include <algorithm>
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struct GSRegSIGBLID
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{
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u32 SIGID;
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u32 LBLID;
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};
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enum GIF_FLG
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{
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GIF_FLG_PACKED = 0,
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GIF_FLG_REGLIST = 1,
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GIF_FLG_IMAGE = 2,
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GIF_FLG_IMAGE2 = 3
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};
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enum GIF_PATH
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{
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GIF_PATH_1 = 0,
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GIF_PATH_2,
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GIF_PATH_3,
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};
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enum GIF_REG
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{
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GIF_REG_PRIM = 0x00,
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GIF_REG_RGBA = 0x01,
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GIF_REG_STQ = 0x02,
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GIF_REG_UV = 0x03,
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GIF_REG_XYZF2 = 0x04,
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GIF_REG_XYZ2 = 0x05,
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GIF_REG_TEX0_1 = 0x06,
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GIF_REG_TEX0_2 = 0x07,
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GIF_REG_CLAMP_1 = 0x08,
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GIF_REG_CLAMP_2 = 0x09,
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GIF_REG_FOG = 0x0a,
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GIF_REG_XYZF3 = 0x0c,
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GIF_REG_XYZ3 = 0x0d,
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GIF_REG_A_D = 0x0e,
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GIF_REG_NOP = 0x0f,
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};
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struct GIFTAG
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{
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u32 nloop : 15;
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u32 eop : 1;
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u32 dummy0 : 16;
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u32 dummy1 : 14;
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u32 pre : 1;
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u32 prim : 11;
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u32 flg : 2;
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u32 nreg : 4;
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u32 regs[2];
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};
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struct GIFPath
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{
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GIFTAG tag;
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u32 curreg;
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u32 _pad[3];
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u8 regs[16];
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__forceinline void PrepRegs();
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void SetTag(const void* mem);
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u32 GetReg();
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};
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GIFPath m_path[3];
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bool Path3transfer;
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@ -28,7 +28,8 @@ FW.h Linux/Config.h Linux/Linux.h
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libGSnull_a_SOURCES += \
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Linux/interface.h Linux/support.c \
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Linux/interface.c Linux/support.h \
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Linux/callbacks.h
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Linux/callbacks.h \
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GifTransfer.cpp GifTransfer.h
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#Linux/callbacks.c
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#SUBDIRS = Linux
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