311 lines
8.6 KiB
C++
311 lines
8.6 KiB
C++
// Copyright (C) 2003-2008 Dolphin Project.
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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, version 2.0.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official SVN repository and contact information can be found at
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// http://code.google.com/p/dolphin-emu/
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//DL facts:
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// Ikaruga uses NO display lists!
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// Zelda WW uses TONS of display lists
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// Zelda TP uses almost 100% display lists except menus (we like this!)
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// Note that it IS NOT POSSIBLE to precompile display lists! You can compile them as they are
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// and hope that the vertex format doesn't change, though, if you do it just when they are
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// called. The reason is that the vertex format affects the sizes of the vertices.
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#include "Globals.h"
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#include "Profiler.h"
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#include "OpcodeDecoding.h"
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#include "VertexLoader.h"
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#include "VertexShaderManager.h"
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#include "TextureMngr.h"
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#include "BPStructs.h"
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#include "DataReader.h"
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#define CMDBUFFER_SIZE 1024*1024
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void Decode();
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extern u8 FAKE_PeekFifo8(u32 _uOffset);
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extern u16 FAKE_PeekFifo16(u32 _uOffset);
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extern u32 FAKE_PeekFifo32(u32 _uOffset);
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extern int FAKE_GetFifoSize();
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CDataReader_Fifo g_fifoReader;
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template <class T>
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void Xchg(T& a, T&b)
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{
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T c = a;
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a = b;
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b = c;
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}
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void ExecuteDisplayList(u32 address, u32 size)
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{
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IDataReader* pOldReader = g_pDataReader;
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//address &= 0x01FFFFFF; // phys address
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CDataReader_Memory memoryReader(address);
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g_pDataReader = &memoryReader;
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// temporarily swap dl and non-dl(small "hack" for the stats)
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Xchg(stats.thisFrame.numDLPrims, stats.thisFrame.numPrims);
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Xchg(stats.thisFrame.numXFLoadsInDL, stats.thisFrame.numXFLoads);
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Xchg(stats.thisFrame.numCPLoadsInDL, stats.thisFrame.numCPLoads);
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Xchg(stats.thisFrame.numBPLoadsInDL, stats.thisFrame.numBPLoads);
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while((memoryReader.GetReadAddress() - address) < size)
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{
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Decode();
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}
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INCSTAT(stats.numDListsCalled);
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INCSTAT(stats.thisFrame.numDListsCalled);
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// un-swap
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Xchg(stats.thisFrame.numDLPrims, stats.thisFrame.numPrims);
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Xchg(stats.thisFrame.numXFLoadsInDL, stats.thisFrame.numXFLoads);
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Xchg(stats.thisFrame.numCPLoadsInDL, stats.thisFrame.numCPLoads);
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Xchg(stats.thisFrame.numBPLoadsInDL, stats.thisFrame.numBPLoads);
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// reset to the old reader
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g_pDataReader = pOldReader;
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}
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inline u8 PeekFifo8(u32 _uOffset)
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{
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return FAKE_PeekFifo8(_uOffset);
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}
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inline u16 PeekFifo16(u32 _uOffset)
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{
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return FAKE_PeekFifo16(_uOffset);
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}
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inline u32 PeekFifo32(u32 _uOffset)
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{
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return FAKE_PeekFifo32(_uOffset);
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}
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bool FifoCommandRunnable(void)
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{
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u32 iBufferSize = FAKE_GetFifoSize();
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if (iBufferSize == 0)
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return false;
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u8 Cmd = PeekFifo8(0);
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u32 iCommandSize = 0;
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switch(Cmd)
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{
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case GX_NOP:
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// Hm, this means that we scan over nop streams pretty slowly...
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iCommandSize = 1;
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break;
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case GX_LOAD_CP_REG:
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iCommandSize = 6;
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break;
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case GX_LOAD_INDX_A:
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case GX_LOAD_INDX_B:
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case GX_LOAD_INDX_C:
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case GX_LOAD_INDX_D:
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iCommandSize = 5;
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break;
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case GX_CMD_CALL_DL:
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iCommandSize = 9;
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break;
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case 0x44:
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iCommandSize = 1;
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// zelda 4 swords calls it and checks the metrics registers after that
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break;
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case GX_CMD_INVL_VC: // invalid vertex cache - no parameter?
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iCommandSize = 1;
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break;
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case GX_LOAD_BP_REG:
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iCommandSize = 5;
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break;
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case GX_LOAD_XF_REG:
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{
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// check if we can read the header
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if (iBufferSize >= 5)
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{
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iCommandSize = 1 + 4;
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u32 Cmd2 = PeekFifo32(1);
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int dwTransferSize = ((Cmd2 >> 16) & 15) + 1;
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iCommandSize += dwTransferSize * 4;
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}
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else
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{
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return false;
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}
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}
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break;
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default:
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if (Cmd & 0x80)
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{
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// check if we can read the header
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if (iBufferSize >= 3)
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{
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iCommandSize = 1 + 2;
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u16 numVertices = PeekFifo16(1);
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VertexLoader& vtxLoader = g_VertexLoaders[Cmd & GX_VAT_MASK];
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iCommandSize += numVertices * vtxLoader.ComputeVertexSize();
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}
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else {
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return false;
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}
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}
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else {
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char szTemp[1024];
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sprintf(szTemp, "GFX: Unknown Opcode (0x%x).\n"
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"This means one of the following:\n"
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"* The emulated GPU got desynced, disabling dual core can help\n"
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"* Command stream corrupted by some spurious memory bug\n"
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"* This really is an unknown opcode (unlikely)\n"
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"* Some other sort of bug\n\n"
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"Dolphin will now likely crash or hang. Enjoy.", Cmd);
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g_VideoInitialize.pSysMessage(szTemp);
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g_VideoInitialize.pLog(szTemp, TRUE);
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}
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break;
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}
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if (iCommandSize > iBufferSize)
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return false;
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// INFO_LOG("OP detected: Cmd 0x%x size %i buffer %i",Cmd, iCommandSize, iBufferSize);
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return true;
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}
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void Decode(void)
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{
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int Cmd = g_pDataReader->Read8();
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switch(Cmd)
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{
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case GX_NOP:
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break;
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case GX_LOAD_CP_REG: //0x08
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{
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u32 SubCmd = g_pDataReader->Read8();
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u32 Value = g_pDataReader->Read32();
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VertexManager::LoadCPReg(SubCmd,Value);
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INCSTAT(stats.thisFrame.numCPLoads);
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}
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break;
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case GX_LOAD_XF_REG:
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{
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u32 Cmd2 = g_pDataReader->Read32();
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int dwTransferSize = ((Cmd2>>16)&15) + 1;
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u32 dwAddress = Cmd2 & 0xFFFF;
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static u32 pData[16];
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for (int i=0; i<dwTransferSize; i++)
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pData[i] = g_pDataReader->Read32();
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VertexShaderMngr::LoadXFReg(dwTransferSize,dwAddress,pData);
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INCSTAT(stats.thisFrame.numXFLoads);
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}
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break;
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case GX_LOAD_INDX_A: //used for position matrices
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VertexShaderMngr::LoadIndexedXF(g_pDataReader->Read32(),0xC);
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break;
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case GX_LOAD_INDX_B: //used for normal matrices
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VertexShaderMngr::LoadIndexedXF(g_pDataReader->Read32(),0xD);
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break;
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case GX_LOAD_INDX_C: //used for postmatrices
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VertexShaderMngr::LoadIndexedXF(g_pDataReader->Read32(),0xE);
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break;
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case GX_LOAD_INDX_D: //used for lights
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VertexShaderMngr::LoadIndexedXF(g_pDataReader->Read32(),0xF);
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break;
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case GX_CMD_CALL_DL:
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{
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u32 dwAddr = g_pDataReader->Read32();
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u32 dwCount = g_pDataReader->Read32();
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ExecuteDisplayList(dwAddr, dwCount);
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}
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break;
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case 0x44:
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// zelda 4 swords calls it and checks the metrics registers after that
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break;
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case GX_CMD_INVL_VC:// Invalidate (vertex cache?)
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DebugLog("Invalidate (vertex cache?)");
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break;
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case GX_LOAD_BP_REG: //0x61
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{
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u32 cmd = g_pDataReader->Read32();
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LoadBPReg(cmd);
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INCSTAT(stats.thisFrame.numBPLoads);
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}
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break;
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// draw primitives
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default:
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if (Cmd&0x80)
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{
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// load vertices (use computed vertex size from FifoCommandRunnable above)
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u16 numVertices = g_pDataReader->Read16();
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if (numVertices > 0) {
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g_VertexLoaders[Cmd & GX_VAT_MASK].RunVertices((Cmd & GX_PRIMITIVE_MASK) >> GX_PRIMITIVE_SHIFT, numVertices);
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}
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}
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else
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{
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// char szTmp[256];
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//sprintf(szTmp, "Illegal command %02x (at %08x)",Cmd,g_pDataReader->GetPtr());
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//g_VideoInitialize.pLog(szTmp);
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//MessageBox(0,szTmp,"GFX ERROR",0);
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// _assert_msg_(0,szTmp,"");
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break;
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}
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break;
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}
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}
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void OpcodeDecoder_Init()
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{
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g_pDataReader = &g_fifoReader;
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}
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void OpcodeDecoder_Shutdown()
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{
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}
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void OpcodeDecoder_Run()
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{
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DVSTARTPROFILE();
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while (FifoCommandRunnable())
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{
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Decode();
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}
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}
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