forked from dolphin-emu/dolphin
311 lines
9.0 KiB
C++
311 lines
9.0 KiB
C++
// Copyright 2008 Dolphin Emulator Project
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// Licensed under GPLv2+
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// Refer to the license.txt file included.
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// DL facts:
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// Ikaruga uses (nearly) 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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// Super Mario Galaxy has nearly all geometry and more than half of the state in DLs (great!)
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// Note that it IS NOT GENERALLY POSSIBLE to precompile display lists! You can compile them as they
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// are
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// while interpreting them, and hope that the vertex format doesn't change, though, if you do it
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// right
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// when they are called. The reason is that the vertex format affects the sizes of the vertices.
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#include "VideoCommon/OpcodeDecoding.h"
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#include "Common/CommonTypes.h"
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#include "Common/Logging/Log.h"
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#include "Common/MsgHandler.h"
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#include "Core/FifoPlayer/FifoRecorder.h"
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#include "Core/HW/Memmap.h"
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#include "VideoCommon/BPMemory.h"
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#include "VideoCommon/CPMemory.h"
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#include "VideoCommon/CommandProcessor.h"
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#include "VideoCommon/DataReader.h"
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#include "VideoCommon/Fifo.h"
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#include "VideoCommon/Statistics.h"
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#include "VideoCommon/VertexLoaderManager.h"
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#include "VideoCommon/VideoCommon.h"
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#include "VideoCommon/XFMemory.h"
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bool g_bRecordFifoData = false;
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namespace OpcodeDecoder
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{
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static bool s_bFifoErrorSeen = false;
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static u32 InterpretDisplayList(u32 address, u32 size)
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{
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u8* startAddress;
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if (Fifo::UseDeterministicGPUThread())
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startAddress = (u8*)Fifo::PopFifoAuxBuffer(size);
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else
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startAddress = Memory::GetPointer(address);
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u32 cycles = 0;
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// Avoid the crash if Memory::GetPointer failed ..
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if (startAddress != nullptr)
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{
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// temporarily swap dl and non-dl (small "hack" for the stats)
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Statistics::SwapDL();
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Run(DataReader(startAddress, startAddress + size), &cycles, true);
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INCSTAT(stats.thisFrame.numDListsCalled);
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// un-swap
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Statistics::SwapDL();
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}
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return cycles;
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}
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static void InterpretDisplayListPreprocess(u32 address, u32 size)
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{
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u8* startAddress = Memory::GetPointer(address);
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Fifo::PushFifoAuxBuffer(startAddress, size);
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if (startAddress != nullptr)
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{
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Run<true>(DataReader(startAddress, startAddress + size), nullptr, true);
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}
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}
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static void UnknownOpcode(u8 cmd_byte, void* buffer, bool preprocess)
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{
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// TODO(Omega): Maybe dump FIFO to file on this error
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PanicAlertT("GFX FIFO: Unknown Opcode (0x%02x @ %p, %s).\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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"Further errors will be sent to the Video Backend log and\n"
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"Dolphin will now likely crash or hang. Enjoy.",
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cmd_byte, buffer, preprocess ? "preprocess=true" : "preprocess=false");
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{
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SCPFifoStruct& fifo = CommandProcessor::fifo;
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PanicAlert("Illegal command %02x\n"
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"CPBase: 0x%08x\n"
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"CPEnd: 0x%08x\n"
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"CPHiWatermark: 0x%08x\n"
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"CPLoWatermark: 0x%08x\n"
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"CPReadWriteDistance: 0x%08x\n"
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"CPWritePointer: 0x%08x\n"
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"CPReadPointer: 0x%08x\n"
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"CPBreakpoint: 0x%08x\n"
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"bFF_GPReadEnable: %s\n"
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"bFF_BPEnable: %s\n"
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"bFF_BPInt: %s\n"
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"bFF_Breakpoint: %s\n"
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"bFF_GPLinkEnable: %s\n"
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"bFF_HiWatermarkInt: %s\n"
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"bFF_LoWatermarkInt: %s\n",
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cmd_byte, fifo.CPBase, fifo.CPEnd, fifo.CPHiWatermark, fifo.CPLoWatermark,
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fifo.CPReadWriteDistance, fifo.CPWritePointer, fifo.CPReadPointer, fifo.CPBreakpoint,
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fifo.bFF_GPReadEnable ? "true" : "false", fifo.bFF_BPEnable ? "true" : "false",
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fifo.bFF_BPInt ? "true" : "false", fifo.bFF_Breakpoint ? "true" : "false",
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fifo.bFF_GPLinkEnable ? "true" : "false", fifo.bFF_HiWatermarkInt ? "true" : "false",
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fifo.bFF_LoWatermarkInt ? "true" : "false");
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}
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}
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void Init()
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{
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s_bFifoErrorSeen = false;
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}
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template <bool is_preprocess>
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u8* Run(DataReader src, u32* cycles, bool in_display_list)
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{
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u32 totalCycles = 0;
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u8* opcodeStart;
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while (true)
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{
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opcodeStart = src.GetPointer();
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if (!src.size())
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goto end;
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u8 cmd_byte = src.Read<u8>();
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int refarray;
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switch (cmd_byte)
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{
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case GX_NOP:
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totalCycles += 6; // Hm, this means that we scan over nop streams pretty slowly...
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break;
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case GX_UNKNOWN_RESET:
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totalCycles += 6; // Datel software uses this command
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DEBUG_LOG(VIDEO, "GX Reset?: %08x", cmd_byte);
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break;
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case GX_LOAD_CP_REG:
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{
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if (src.size() < 1 + 4)
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goto end;
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totalCycles += 12;
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u8 sub_cmd = src.Read<u8>();
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u32 value = src.Read<u32>();
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LoadCPReg(sub_cmd, value, is_preprocess);
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if (!is_preprocess)
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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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if (src.size() < 4)
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goto end;
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u32 Cmd2 = src.Read<u32>();
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int transfer_size = ((Cmd2 >> 16) & 15) + 1;
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if (src.size() < transfer_size * sizeof(u32))
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goto end;
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totalCycles += 18 + 6 * transfer_size;
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if (!is_preprocess)
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{
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u32 xf_address = Cmd2 & 0xFFFF;
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LoadXFReg(transfer_size, xf_address, src);
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INCSTAT(stats.thisFrame.numXFLoads);
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}
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src.Skip<u32>(transfer_size);
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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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refarray = 0xC;
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goto load_indx;
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case GX_LOAD_INDX_B: // used for normal matrices
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refarray = 0xD;
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goto load_indx;
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case GX_LOAD_INDX_C: // used for postmatrices
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refarray = 0xE;
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goto load_indx;
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case GX_LOAD_INDX_D: // used for lights
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refarray = 0xF;
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goto load_indx;
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load_indx:
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if (src.size() < 4)
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goto end;
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totalCycles += 6;
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if (is_preprocess)
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PreprocessIndexedXF(src.Read<u32>(), refarray);
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else
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LoadIndexedXF(src.Read<u32>(), refarray);
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break;
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case GX_CMD_CALL_DL:
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{
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if (src.size() < 8)
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goto end;
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u32 address = src.Read<u32>();
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u32 count = src.Read<u32>();
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if (in_display_list)
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{
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totalCycles += 6;
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WARN_LOG(VIDEO, "recursive display list detected");
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}
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else
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{
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if (is_preprocess)
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InterpretDisplayListPreprocess(address, count);
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else
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totalCycles += 6 + InterpretDisplayList(address, count);
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}
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}
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break;
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case GX_CMD_UNKNOWN_METRICS: // zelda 4 swords calls it and checks the metrics registers after
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// that
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totalCycles += 6;
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DEBUG_LOG(VIDEO, "GX 0x44: %08x", cmd_byte);
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break;
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case GX_CMD_INVL_VC: // Invalidate Vertex Cache
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totalCycles += 6;
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DEBUG_LOG(VIDEO, "Invalidate (vertex cache?)");
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break;
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case GX_LOAD_BP_REG:
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// In skipped_frame case: We have to let BP writes through because they set
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// tokens and stuff. TODO: Call a much simplified LoadBPReg instead.
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{
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if (src.size() < 4)
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goto end;
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totalCycles += 12;
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u32 bp_cmd = src.Read<u32>();
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if (is_preprocess)
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{
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LoadBPRegPreprocess(bp_cmd);
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}
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else
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{
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LoadBPReg(bp_cmd);
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INCSTAT(stats.thisFrame.numBPLoads);
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}
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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_byte & 0xC0) == 0x80)
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{
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// load vertices
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if (src.size() < 2)
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goto end;
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u16 num_vertices = src.Read<u16>();
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int bytes = VertexLoaderManager::RunVertices(
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cmd_byte & GX_VAT_MASK, // Vertex loader index (0 - 7)
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(cmd_byte & GX_PRIMITIVE_MASK) >> GX_PRIMITIVE_SHIFT, num_vertices, src,
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Fifo::WillSkipCurrentFrame(), is_preprocess);
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if (bytes < 0)
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goto end;
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src.Skip(bytes);
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// 4 GPU ticks per vertex, 3 CPU ticks per GPU tick
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totalCycles += num_vertices * 4 * 3 + 6;
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}
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else
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{
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if (!s_bFifoErrorSeen)
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UnknownOpcode(cmd_byte, opcodeStart, is_preprocess);
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ERROR_LOG(VIDEO, "FIFO: Unknown Opcode(0x%02x @ %p, preprocessing = %s)", cmd_byte,
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opcodeStart, is_preprocess ? "yes" : "no");
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s_bFifoErrorSeen = true;
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totalCycles += 1;
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}
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break;
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}
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// Display lists get added directly into the FIFO stream
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if (!is_preprocess && g_bRecordFifoData && cmd_byte != GX_CMD_CALL_DL)
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{
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u8* opcodeEnd;
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opcodeEnd = src.GetPointer();
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FifoRecorder::GetInstance().WriteGPCommand(opcodeStart, u32(opcodeEnd - opcodeStart));
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}
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}
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end:
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if (cycles)
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{
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*cycles = totalCycles;
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}
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return opcodeStart;
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}
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template u8* Run<true>(DataReader src, u32* cycles, bool in_display_list);
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template u8* Run<false>(DataReader src, u32* cycles, bool in_display_list);
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} // namespace OpcodeDecoder
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