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https://github.com/dolphin-emu/dolphin.git
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ceabf90bda
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5528 8ced0084-cf51-0410-be5f-012b33b47a6e
561 lines
13 KiB
C++
561 lines
13 KiB
C++
// Copyright (C) 2003-2009 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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// TODO: Handle cache-is-full condition :p
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#include <map>
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#include "Common.h"
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#include "VideoCommon.h"
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#include "Hash.h"
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#include "MemoryUtil.h"
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#include "DataReader.h"
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#include "Statistics.h"
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#include "OpcodeDecoding.h" // For the GX_ constants.
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#include "XFMemory.h"
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#include "CPMemory.h"
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#include "BPMemory.h"
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#include "VertexManager.h"
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#include "VertexLoaderManager.h"
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#include "x64Emitter.h"
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#include "ABI.h"
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#include "DLCache.h"
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#define DL_CODE_CACHE_SIZE (1024*1024*16)
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#define DL_STATIC_DATA_SIZE (1024*1024*4)
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extern int frameCount;
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using namespace Gen;
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namespace DLCache
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{
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// Currently just recompiles the DLs themselves, doesn't bother with the vertex data.
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// The speed boost is pretty small. The real big boost will come when we also store
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// vertex arrays in the cached DLs.
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enum DisplayListPass {
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DLPASS_ANALYZE,
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DLPASS_COMPILE,
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DLPASS_RUN,
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};
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struct VDataHashRegion
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{
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u32 hash;
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u32 start_address;
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int size;
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};
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struct CachedDisplayList
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{
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CachedDisplayList()
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: uncachable(false),
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pass(DLPASS_ANALYZE),
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next_check(1)
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{
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frame_count = frameCount;
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}
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bool uncachable; // if set, this DL will always be interpreted. This gets set if hash ever changes.
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int pass;
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u32 dl_hash;
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int check;
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int next_check;
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u32 vdata_hash;
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std::vector<VDataHashRegion> hash_regions;
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int frame_count;
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// ... Something containing cached vertex buffers here ...
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// Compile the commands themselves down to native code.
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const u8 *compiled_code;
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};
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// We want to allow caching DLs that start at the same address but have different lengths,
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// so the size has to be in the ID.
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inline u64 CreateMapId(u32 address, u32 size)
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{
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return ((u64)address << 32) | size;
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}
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typedef std::map<u64, CachedDisplayList> DLMap;
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static DLMap dl_map;
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static u8 *dlcode_cache;
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static u8 *static_data_buffer;
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static u8 *static_data_ptr;
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static Gen::XEmitter emitter;
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// Everything gets free'd when the cache is cleared.
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u8 *AllocStaticData(int size)
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{
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u8 *cur_ptr = static_data_ptr;
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static_data_ptr += (size + 3) & ~3;
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return cur_ptr;
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}
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// First pass - analyze
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bool AnalyzeAndRunDisplayList(u32 address, int size, CachedDisplayList *dl)
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{
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int num_xf_reg = 0;
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int num_cp_reg = 0;
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//int num_bp_reg = 0; // unused?
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int num_index_xf = 0;
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//int num_draw_call = 0; // unused?
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u8 *old_datareader = g_pVideoData;
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g_pVideoData = Memory_GetPtr(address);
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u8 *end = g_pVideoData + size;
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while (g_pVideoData < end)
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{
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// Yet another reimplementation of the DL reading...
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int cmd_byte = DataReadU8();
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switch (cmd_byte)
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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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// Execute
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u8 sub_cmd = DataReadU8();
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u32 value = DataReadU32();
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LoadCPReg(sub_cmd, value);
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INCSTAT(stats.thisFrame.numCPLoads);
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// Analyze
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num_cp_reg++;
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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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// Execute
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u32 Cmd2 = DataReadU32();
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int transfer_size = ((Cmd2 >> 16) & 15) + 1;
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u32 xf_address = Cmd2 & 0xFFFF;
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// TODO - speed this up. pshufb?
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u32 data_buffer[16];
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for (int i = 0; i < transfer_size; i++)
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data_buffer[i] = DataReadU32();
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LoadXFReg(transfer_size, xf_address, data_buffer);
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INCSTAT(stats.thisFrame.numXFLoads);
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// Analyze
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num_xf_reg++;
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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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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xC);
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// Analyze
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num_index_xf++;
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}
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break;
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case GX_LOAD_INDX_B: //used for normal matrices
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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xD);
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// Analyze
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num_index_xf++;
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}
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break;
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case GX_LOAD_INDX_C: //used for postmatrices
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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xE);
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// Analyze
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num_index_xf++;
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}
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break;
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case GX_LOAD_INDX_D: //used for lights
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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xF);
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// Analyze
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num_index_xf++;
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}
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break;
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case GX_CMD_CALL_DL:
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PanicAlert("Seeing DL call inside DL.");
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break;
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case GX_CMD_UNKNOWN_METRICS:
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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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DEBUG_LOG(VIDEO, "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 bp_cmd = DataReadU32();
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// Execute
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LoadBPReg(bp_cmd);
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INCSTAT(stats.thisFrame.numBPLoads);
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// Analyze
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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 & 0x80)
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{
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// load vertices (use computed vertex size from FifoCommandRunnable above)
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// Execute
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u16 numVertices = DataReadU16();
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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,
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numVertices);
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// Analyze
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}
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else
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{
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ERROR_LOG(VIDEO, "DLCache::CompileAndRun: Illegal command %02x", cmd_byte);
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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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g_pVideoData = old_datareader;
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return true;
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}
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// The only sensible way to detect changes to vertex data is to convert several times
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// and hash the output.
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// Second pass - compile
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// Since some commands can affect the size of other commands, we really have no choice
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// but to compile as we go, interpreting the list. We can't compile and then execute, we must
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// compile AND execute at the same time. The second time the display list gets called, we already
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// have the compiled code so we don't have to interpret anymore, we just run it.
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bool CompileAndRunDisplayList(u32 address, int size, CachedDisplayList *dl)
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{
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VertexManager::Flush();
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u8 *old_datareader = g_pVideoData;
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g_pVideoData = Memory_GetPtr(address);
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u8 *end = g_pVideoData + size;
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emitter.AlignCode4();
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dl->compiled_code = emitter.GetCodePtr();
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emitter.ABI_EmitPrologue(4);
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while (g_pVideoData < end)
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{
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// Yet another reimplementation of the DL reading...
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int cmd_byte = DataReadU8();
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switch (cmd_byte)
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{
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case GX_NOP:
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// Execute
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// Compile
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break;
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case GX_LOAD_CP_REG: //0x08
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{
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// Execute
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u8 sub_cmd = DataReadU8();
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u32 value = DataReadU32();
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LoadCPReg(sub_cmd, value);
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INCSTAT(stats.thisFrame.numCPLoads);
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// Compile
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emitter.ABI_CallFunctionCC((void *)&LoadCPReg, sub_cmd, value);
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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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// Execute
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u32 Cmd2 = DataReadU32();
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int transfer_size = ((Cmd2 >> 16) & 15) + 1;
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u32 xf_address = Cmd2 & 0xFFFF;
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// TODO - speed this up. pshufb?
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u8 *real_data_buffer = AllocStaticData(4 * transfer_size);
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u32 *data_buffer = (u32 *)real_data_buffer;
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for (int i = 0; i < transfer_size; i++)
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data_buffer[i] = DataReadU32();
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LoadXFReg(transfer_size, xf_address, data_buffer);
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INCSTAT(stats.thisFrame.numXFLoads);
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// Compile
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emitter.ABI_CallFunctionCCP((void *)&LoadXFReg, transfer_size, address, data_buffer);
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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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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xC);
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// Compile
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emitter.ABI_CallFunctionCC((void *)&LoadIndexedXF, value, 0xC);
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}
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break;
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case GX_LOAD_INDX_B: //used for normal matrices
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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xD);
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// Compile
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emitter.ABI_CallFunctionCC((void *)&LoadIndexedXF, value, 0xD);
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}
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break;
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case GX_LOAD_INDX_C: //used for postmatrices
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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xE);
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// Compile
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emitter.ABI_CallFunctionCC((void *)&LoadIndexedXF, value, 0xE);
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}
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break;
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case GX_LOAD_INDX_D: //used for lights
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{
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u32 value = DataReadU32();
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// Execute
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LoadIndexedXF(value, 0xF);
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// Compile
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emitter.ABI_CallFunctionCC((void *)&LoadIndexedXF, value, 0xF);
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}
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break;
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case GX_CMD_CALL_DL:
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PanicAlert("Seeing DL call inside DL.");
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break;
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case GX_CMD_UNKNOWN_METRICS:
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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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DEBUG_LOG(VIDEO, "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 bp_cmd = DataReadU32();
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// Execute
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LoadBPReg(bp_cmd);
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INCSTAT(stats.thisFrame.numBPLoads);
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// Compile
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emitter.ABI_CallFunctionC((void *)&LoadBPReg, bp_cmd);
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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 & 0x80)
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{
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// load vertices (use computed vertex size from FifoCommandRunnable above)
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// Execute
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u16 numVertices = DataReadU16();
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u64 pre_draw_video_data = (u64)g_pVideoData;
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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,
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numVertices);
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// Compile
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#ifdef _M_X64
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emitter.MOV(64, R(RAX), Imm64(pre_draw_video_data));
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emitter.MOV(64, M(&g_pVideoData), R(RAX));
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#else
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emitter.MOV(32, R(EAX), Imm32((u32)pre_draw_video_data));
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emitter.MOV(32, M(&g_pVideoData), R(EAX));
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#endif
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emitter.ABI_CallFunctionCCC(
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(void *)&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,
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numVertices);
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}
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else
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{
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ERROR_LOG(VIDEO, "DLCache::CompileAndRun: Illegal command %02x", cmd_byte);
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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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emitter.ABI_EmitEpilogue(4);
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g_pVideoData = old_datareader;
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return true;
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}
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// This one's pretty expensive. We should check if we can get away with only
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// hashing the entire DL the first 3 frames or something.
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u32 ComputeDLHash(u32 address, u32 size)
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{
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u8 *ptr = Memory_GetPtr(address);
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return HashFletcher(ptr, size & ~1);
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}
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void Init()
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{
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dlcode_cache = (u8 *)AllocateExecutableMemory(DL_CODE_CACHE_SIZE, false); // Don't need low memory.
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static_data_buffer = (u8 *)AllocateMemoryPages(DL_STATIC_DATA_SIZE);
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static_data_ptr = static_data_buffer;
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emitter.SetCodePtr(dlcode_cache);
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}
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void Shutdown()
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{
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Clear();
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FreeMemoryPages(dlcode_cache, DL_CODE_CACHE_SIZE);
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FreeMemoryPages(static_data_buffer, DL_STATIC_DATA_SIZE);
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dlcode_cache = NULL;
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}
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void Clear()
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{
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dl_map.clear();
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// Reset the cache pointers.
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emitter.SetCodePtr(dlcode_cache);
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static_data_ptr = static_data_buffer;
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}
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void ProgressiveCleanup()
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{
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DLMap::iterator iter = dl_map.begin();
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while (iter != dl_map.end()) {
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CachedDisplayList &entry = iter->second;
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int limit = iter->second.uncachable ? 1200 : 400;
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if (entry.frame_count < frameCount - limit) {
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// entry.Destroy();
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dl_map.erase(iter++); // (this is gcc standard!)
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}
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else
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++iter;
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}
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}
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} // namespace
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// NOTE - outside the namespace on purpose.
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bool HandleDisplayList(u32 address, u32 size)
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{
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// Disable display list caching since the benefit isn't much to write home about
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// right now...
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return false;
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u64 dl_id = DLCache::CreateMapId(address, size);
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DLCache::DLMap::iterator iter = DLCache::dl_map.find(dl_id);
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stats.numDListsAlive = (int)DLCache::dl_map.size();
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if (iter != DLCache::dl_map.end())
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{
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DLCache::CachedDisplayList &dl = iter->second;
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if (dl.uncachable)
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{
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// We haven't compiled it - let's return false so it gets
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// interpreted.
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return false;
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}
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// Got one! And it's been compiled too, so let's run the compiled code!
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switch (dl.pass)
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{
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case DLCache::DLPASS_ANALYZE:
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PanicAlert("DLPASS_ANALYZE - should have been done the first pass");
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break;
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case DLCache::DLPASS_COMPILE:
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// First, check that the hash is the same as the last time.
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if (dl.dl_hash != HashAdler32(Memory_GetPtr(address), size))
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{
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// PanicAlert("uncachable %08x", address);
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dl.uncachable = true;
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return false;
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}
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DLCache::CompileAndRunDisplayList(address, size, &dl);
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dl.pass = DLCache::DLPASS_RUN;
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break;
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case DLCache::DLPASS_RUN:
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{
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// Every N draws, check hash
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dl.check--;
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if (dl.check <= 0)
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{
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if (dl.dl_hash != HashAdler32(Memory_GetPtr(address), size))
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{
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dl.uncachable = true;
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return false;
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}
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dl.check = dl.next_check;
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dl.next_check *= 2;
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if (dl.next_check > 1024)
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dl.next_check = 1024;
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}
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u8 *old_datareader = g_pVideoData;
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((void (*)())(void*)(dl.compiled_code))();
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g_pVideoData = old_datareader;
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break;
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}
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}
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return true;
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}
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DLCache::CachedDisplayList dl;
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|
|
if (DLCache::AnalyzeAndRunDisplayList(address, size, &dl)) {
|
|
dl.dl_hash = HashAdler32(Memory_GetPtr(address), size);
|
|
dl.pass = DLCache::DLPASS_COMPILE;
|
|
dl.check = 1;
|
|
dl.next_check = 1;
|
|
DLCache::dl_map[dl_id] = dl;
|
|
return true;
|
|
} else {
|
|
dl.uncachable = true;
|
|
DLCache::dl_map[dl_id] = dl;
|
|
return true; // don't also interpret the list.
|
|
}
|
|
}
|