dolphin/Source/Plugins/Plugin_VideoDX9/Src/OpcodeDecoding.cpp

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//DL facts:
// Ikaruga uses NO display lists!
// Zelda WW uses TONS of display lists
// Zelda TP uses almost 100% display lists except menus (we like this!)
// Note that it IS NOT POSSIBLE to precompile display lists! You can compile them as they are
// and hope that the vertex format doesn't change, though, if you do it just when they are
// called. The reason is that the vertex format affects the sizes of the vertices.
#include "D3DBase.h"
#include "Common.h"
#include "Globals.h"
#include "VertexHandler.h"
#include "TransformEngine.h"
#include "OpcodeDecoding.h"
#include "TextureCache.h"
#include "ShaderManager.h"
#include "DecodedVArray.h"
#include "BPStructs.h"
#include "XFStructs.h"
#include "Utils.h"
#include "main.h"
#include "DataReader.h"
#include "DLCompiler.h"
#define CMDBUFFER_SIZE 1024*1024
DecodedVArray tempvarray;
void Decode();
extern u8 FAKE_PeekFifo8(u32 _uOffset);
extern u16 FAKE_PeekFifo16(u32 _uOffset);
extern u32 FAKE_PeekFifo32(u32 _uOffset);
extern int FAKE_GetFifoSize();
CDataReader_Fifo g_fifoReader;
void ExecuteDisplayList(u32 address, u32 size)
{
IDataReader* pOldReader = g_pDataReader;
// address &= 0x01FFFFFF; // phys address
CDataReader_Memory memoryReader(address);
g_pDataReader = &memoryReader;
while((memoryReader.GetReadAddress() - address) < size)
{
Decode();
}
INCSTAT(stats.numDListsAlive);
// reset to the old reader
g_pDataReader = pOldReader;
}
inline u8 PeekFifo8(u32 _uOffset)
{
return FAKE_PeekFifo8(_uOffset);
}
inline u16 PeekFifo16(u32 _uOffset)
{
return FAKE_PeekFifo16(_uOffset);
}
inline u32 PeekFifo32(u32 _uOffset)
{
return FAKE_PeekFifo32(_uOffset);
}
bool FifoCommandRunnable(void)
{
u32 iBufferSize = FAKE_GetFifoSize();
if (iBufferSize == 0)
return false;
u8 Cmd = PeekFifo8(0);
u32 iCommandSize = 0;
switch(Cmd)
{
case GX_NOP:
// Hm, this means that we scan over nop streams pretty slowly...
iCommandSize = 1;
break;
case GX_LOAD_CP_REG:
iCommandSize = 6;
break;
case GX_LOAD_INDX_A:
case GX_LOAD_INDX_B:
case GX_LOAD_INDX_C:
case GX_LOAD_INDX_D:
iCommandSize = 5;
break;
case GX_CMD_CALL_DL:
iCommandSize = 9;
break;
case 0x44:
iCommandSize = 1;
// zelda 4 swords calls it and checks the metrics registers after that
break;
case GX_CMD_INVL_VC: // invalid vertex cache - no parameter?
iCommandSize = 1;
break;
case GX_LOAD_BP_REG:
iCommandSize = 5;
break;
case GX_LOAD_XF_REG:
{
// check if we can read the header
if (iBufferSize >= 5)
{
iCommandSize = 1 + 4;
u32 Cmd2 = PeekFifo32(1);
int dwTransferSize = ((Cmd2 >> 16) & 15) + 1;
iCommandSize += dwTransferSize * 4;
}
else
{
return false;
}
}
break;
default:
if (Cmd&0x80)
{
// check if we can read the header
if (iBufferSize >= 3)
{
iCommandSize = 1 + 2;
u16 numVertices = PeekFifo16(1);
VertexLoader& vtxLoader = g_VertexLoaders[Cmd & GX_VAT_MASK];
vtxLoader.Setup();
int vsize = vtxLoader.GetVertexSize();
iCommandSize += numVertices * vsize;
}
else
{
return false;
}
}
else
{
char szTemp[512];
sprintf(szTemp, "Error: Unknown Opcode (0x%x)", Cmd);
MessageBox(NULL, szTemp, "Video-Plugin", MB_OK);
g_VideoInitialize.pLog(szTemp, TRUE);
}
break;
}
if (iCommandSize > iBufferSize)
return false;
#ifdef _DEBUG
char temp[256];
sprintf(temp, "OP detected: Cmd 0x%x size %i buffer %i",Cmd, iCommandSize, iBufferSize);
g_VideoInitialize.pLog(temp, FALSE);
#endif
return true;
}
void Decode(void)
{
static int DecoderCount = 0;
DecoderCount++;
if (DecoderCount == 0x0019c601)
{
int i = 0;
}
// 0x0019c603 <- error
int Cmd = g_pDataReader->Read8();
switch(Cmd)
{
case GX_NOP:
break;
case GX_LOAD_CP_REG: //0x08
{
u32 SubCmd = g_pDataReader->Read8();
u32 Value = g_pDataReader->Read32();
LoadCPReg(SubCmd,Value);
}
break;
case GX_LOAD_XF_REG:
{
u32 test = PeekFifo32(0);
u32 Cmd2 = g_pDataReader->Read32();
int dwTransferSize = ((Cmd2>>16)&15) + 1;
DWORD dwAddress = Cmd2 & 0xFFFF;
static u32 pData[16];
for (int i=0; i<dwTransferSize; i++)
pData[i] = g_pDataReader->Read32();
LoadXFReg(dwTransferSize,dwAddress,pData);
}
break;
case GX_LOAD_INDX_A: //used for position matrices
LoadIndexedXF(g_pDataReader->Read32(),0xC);
break;
case GX_LOAD_INDX_B: //used for normal matrices
LoadIndexedXF(g_pDataReader->Read32(),0xD);
break;
case GX_LOAD_INDX_C: //used for postmatrices
LoadIndexedXF(g_pDataReader->Read32(),0xE);
break;
case GX_LOAD_INDX_D: //used for lights
LoadIndexedXF(g_pDataReader->Read32(),0xF);
break;
case GX_CMD_CALL_DL:
{
u32 dwAddr = g_pDataReader->Read32();
u32 dwCount = g_pDataReader->Read32();
ExecuteDisplayList(dwAddr, dwCount);
}
break;
case 0x44:
// zelda 4 swords calls it and checks the metrics registers after that
break;
case GX_CMD_INVL_VC:// Invalidate (vertex cache?)
DebugLog("Invalidate (vertex cache?)");
break;
case GX_LOAD_BP_REG: //0x61
{
u32 cmd = g_pDataReader->Read32();
LoadBPReg(cmd);
}
break;
// draw primitives
default:
if (Cmd&0x80)
{
// load vertices
u16 numVertices = g_pDataReader->Read16();
tempvarray.Reset();
VertexLoader::SetVArray(&tempvarray);
VertexLoader& vtxLoader = g_VertexLoaders[Cmd & GX_VAT_MASK];
vtxLoader.Setup();
vtxLoader.PrepareRun();
int vsize = vtxLoader.GetVertexSize();
vtxLoader.RunVertices(numVertices);
// draw vertices
int primitive = (Cmd & GX_PRIMITIVE_MASK) >> GX_PRIMITIVE_SHIFT;
CVertexHandler::DrawVertices(primitive, numVertices, &tempvarray);
}
else
{
char szTmp[256];
// sprintf(szTmp, "Illegal command %02x (at %08x)",Cmd,g_pDataReader->GetPtr());
sprintf(szTmp, "Illegal command %02x",Cmd);
g_VideoInitialize.pLog(szTmp, TRUE);
MessageBox(0,szTmp,"GFX ERROR",0);
// _assert_msg_(0,szTmp,"");
break;
}
break;
}
}
void OpcodeDecoder_Init()
{
g_pDataReader = &g_fifoReader;
tempvarray.Create(65536*3, 1, 8, 3, 2, 8);
}
void OpcodeDecoder_Shutdown()
{
//VirtualFree((LPVOID)buffer,CMDBUFFER_SIZE,MEM_RELEASE);
tempvarray.Destroy();
}
void OpcodeDecoder_Run()
{
// just a small check
if (g_pDataReader != &g_fifoReader)
{
MessageBox(NULL, "very strange", "video-plugin", MB_OK);
}
DVSTARTPROFILE();
while (FifoCommandRunnable())
{
Decode();
}
}