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https://github.com/dolphin-emu/dolphin.git
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284 lines
7.5 KiB
C++
284 lines
7.5 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 while interpreting them, and hope that the vertex format doesn't change, though, if you do
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// it right when they are called. The reason is that the vertex format affects the sizes of the
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// 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 "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/XFMemory.h"
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namespace OpcodeDecoder
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{
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namespace
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{
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bool s_is_fifo_error_seen = false;
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u32 InterpretDisplayList(u32 address, u32 size)
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{
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u8* start_address;
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if (Fifo::UseDeterministicGPUThread())
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start_address = static_cast<u8*>(Fifo::PopFifoAuxBuffer(size));
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else
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start_address = 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 (start_address != nullptr)
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{
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// temporarily swap dl and non-dl (small "hack" for the stats)
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g_stats.SwapDL();
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Run(DataReader(start_address, start_address + size), &cycles, true);
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INCSTAT(g_stats.this_frame.num_dlists_called);
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// un-swap
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g_stats.SwapDL();
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}
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return cycles;
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}
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void InterpretDisplayListPreprocess(u32 address, u32 size)
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{
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u8* const start_address = Memory::GetPointer(address);
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Fifo::PushFifoAuxBuffer(start_address, size);
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if (start_address == nullptr)
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return;
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Run<true>(DataReader(start_address, start_address + size), nullptr, true);
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}
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} // Anonymous namespace
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bool g_record_fifo_data = false;
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void Init()
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{
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s_is_fifo_error_seen = 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 total_cycles = 0;
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u8* opcode_start = nullptr;
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const auto finish_up = [cycles, &opcode_start, &total_cycles] {
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if (cycles != nullptr)
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{
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*cycles = total_cycles;
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}
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return opcode_start;
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};
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while (true)
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{
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opcode_start = src.GetPointer();
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if (!src.size())
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return finish_up();
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const u8 cmd_byte = src.Read<u8>();
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switch (cmd_byte)
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{
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case GX_NOP:
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total_cycles += 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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total_cycles += 6; // Datel software uses this command
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DEBUG_LOG_FMT(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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return finish_up();
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total_cycles += 12;
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const u8 sub_cmd = src.Read<u8>();
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const u32 value = src.Read<u32>();
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LoadCPReg(sub_cmd, value, is_preprocess);
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if constexpr (!is_preprocess)
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INCSTAT(g_stats.this_frame.num_cp_loads);
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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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return finish_up();
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const u32 cmd2 = src.Read<u32>();
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const u32 transfer_size = ((cmd2 >> 16) & 15) + 1;
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if (src.size() < transfer_size * sizeof(u32))
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return finish_up();
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total_cycles += 18 + 6 * transfer_size;
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if constexpr (!is_preprocess)
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{
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const u32 xf_address = cmd2 & 0xFFFF;
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LoadXFReg(transfer_size, xf_address, src);
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INCSTAT(g_stats.this_frame.num_xf_loads);
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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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case GX_LOAD_INDX_B: // Used for normal matrices
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case GX_LOAD_INDX_C: // Used for postmatrices
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case GX_LOAD_INDX_D: // Used for lights
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{
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if (src.size() < 4)
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return finish_up();
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total_cycles += 6;
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// Map the command byte to its ref array.
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// GX_LOAD_INDX_A (32) -> 0xC
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// GX_LOAD_INDX_B (40) -> 0xD
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// GX_LOAD_INDX_C (48) -> 0xE
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// GX_LOAD_INDX_D (56) -> 0xF
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const int ref_array = (cmd_byte / 8) + 8;
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if constexpr (is_preprocess)
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PreprocessIndexedXF(src.Read<u32>(), ref_array);
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else
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LoadIndexedXF(src.Read<u32>(), ref_array);
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}
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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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return finish_up();
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const u32 address = src.Read<u32>();
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const u32 count = src.Read<u32>();
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if (in_display_list)
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{
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total_cycles += 6;
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INFO_LOG_FMT(VIDEO, "recursive display list detected");
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}
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else
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{
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if constexpr (is_preprocess)
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InterpretDisplayListPreprocess(address, count);
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else
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total_cycles += 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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total_cycles += 6;
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DEBUG_LOG_FMT(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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total_cycles += 6;
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DEBUG_LOG_FMT(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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return finish_up();
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total_cycles += 12;
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const u32 bp_cmd = src.Read<u32>();
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if constexpr (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(g_stats.this_frame.num_bp_loads);
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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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return finish_up();
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const u16 num_vertices = src.Read<u16>();
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const 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, is_preprocess);
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if (bytes < 0)
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return finish_up();
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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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total_cycles += num_vertices * 4 * 3 + 6;
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}
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else
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{
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if (!s_is_fifo_error_seen)
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CommandProcessor::HandleUnknownOpcode(cmd_byte, opcode_start, is_preprocess);
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ERROR_LOG_FMT(VIDEO, "FIFO: Unknown Opcode({:#04x} @ {}, preprocessing = {})", cmd_byte,
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fmt::ptr(opcode_start), is_preprocess ? "yes" : "no");
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s_is_fifo_error_seen = true;
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total_cycles += 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 constexpr (!is_preprocess)
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{
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if (g_record_fifo_data && cmd_byte != GX_CMD_CALL_DL)
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{
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const u8* const opcode_end = src.GetPointer();
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FifoRecorder::GetInstance().WriteGPCommand(opcode_start, u32(opcode_end - opcode_start));
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}
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}
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}
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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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