mirror of
https://github.com/godotengine/godot.git
synced 2024-12-15 10:12:40 +08:00
305 lines
12 KiB
C++
305 lines
12 KiB
C++
//
|
|
// Copyright (C) 2015 LunarG, Inc.
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions
|
|
// are met:
|
|
//
|
|
// Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
//
|
|
// Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
//
|
|
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
// POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
|
|
#ifndef SPIRVREMAPPER_H
|
|
#define SPIRVREMAPPER_H
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
#include <cstdlib>
|
|
#include <exception>
|
|
|
|
namespace spv {
|
|
|
|
// MSVC defines __cplusplus as an older value, even when it supports almost all of 11.
|
|
// We handle that here by making our own symbol.
|
|
#if __cplusplus >= 201103L || (defined(_MSC_VER) && _MSC_VER >= 1700)
|
|
# define use_cpp11 1
|
|
#endif
|
|
|
|
class spirvbin_base_t
|
|
{
|
|
public:
|
|
enum Options {
|
|
NONE = 0,
|
|
STRIP = (1<<0),
|
|
MAP_TYPES = (1<<1),
|
|
MAP_NAMES = (1<<2),
|
|
MAP_FUNCS = (1<<3),
|
|
DCE_FUNCS = (1<<4),
|
|
DCE_VARS = (1<<5),
|
|
DCE_TYPES = (1<<6),
|
|
OPT_LOADSTORE = (1<<7),
|
|
OPT_FWD_LS = (1<<8), // EXPERIMENTAL: PRODUCES INVALID SCHEMA-0 SPIRV
|
|
MAP_ALL = (MAP_TYPES | MAP_NAMES | MAP_FUNCS),
|
|
DCE_ALL = (DCE_FUNCS | DCE_VARS | DCE_TYPES),
|
|
OPT_ALL = (OPT_LOADSTORE),
|
|
|
|
ALL_BUT_STRIP = (MAP_ALL | DCE_ALL | OPT_ALL),
|
|
DO_EVERYTHING = (STRIP | ALL_BUT_STRIP)
|
|
};
|
|
};
|
|
|
|
} // namespace SPV
|
|
|
|
#if !defined (use_cpp11)
|
|
#include <cstdio>
|
|
#include <cstdint>
|
|
|
|
namespace spv {
|
|
class spirvbin_t : public spirvbin_base_t
|
|
{
|
|
public:
|
|
spirvbin_t(int /*verbose = 0*/) { }
|
|
|
|
void remap(std::vector<std::uint32_t>& /*spv*/, unsigned int /*opts = 0*/)
|
|
{
|
|
printf("Tool not compiled for C++11, which is required for SPIR-V remapping.\n");
|
|
exit(5);
|
|
}
|
|
};
|
|
|
|
} // namespace SPV
|
|
|
|
#else // defined (use_cpp11)
|
|
|
|
#include <functional>
|
|
#include <cstdint>
|
|
#include <unordered_map>
|
|
#include <unordered_set>
|
|
#include <map>
|
|
#include <set>
|
|
#include <cassert>
|
|
|
|
#include "spirv.hpp"
|
|
#include "spvIR.h"
|
|
|
|
namespace spv {
|
|
|
|
// class to hold SPIR-V binary data for remapping, DCE, and debug stripping
|
|
class spirvbin_t : public spirvbin_base_t
|
|
{
|
|
public:
|
|
spirvbin_t(int verbose = 0) : entryPoint(spv::NoResult), largestNewId(0), verbose(verbose), errorLatch(false)
|
|
{ }
|
|
|
|
virtual ~spirvbin_t() { }
|
|
|
|
// remap on an existing binary in memory
|
|
void remap(std::vector<std::uint32_t>& spv, std::uint32_t opts = DO_EVERYTHING);
|
|
|
|
// Type for error/log handler functions
|
|
typedef std::function<void(const std::string&)> errorfn_t;
|
|
typedef std::function<void(const std::string&)> logfn_t;
|
|
|
|
// Register error/log handling functions (can be lambda fn / functor / etc)
|
|
static void registerErrorHandler(errorfn_t handler) { errorHandler = handler; }
|
|
static void registerLogHandler(logfn_t handler) { logHandler = handler; }
|
|
|
|
protected:
|
|
// This can be overridden to provide other message behavior if needed
|
|
virtual void msg(int minVerbosity, int indent, const std::string& txt) const;
|
|
|
|
private:
|
|
// Local to global, or global to local ID map
|
|
typedef std::unordered_map<spv::Id, spv::Id> idmap_t;
|
|
typedef std::unordered_set<spv::Id> idset_t;
|
|
typedef std::unordered_map<spv::Id, int> blockmap_t;
|
|
|
|
void remap(std::uint32_t opts = DO_EVERYTHING);
|
|
|
|
// Map of names to IDs
|
|
typedef std::unordered_map<std::string, spv::Id> namemap_t;
|
|
|
|
typedef std::uint32_t spirword_t;
|
|
|
|
typedef std::pair<unsigned, unsigned> range_t;
|
|
typedef std::function<void(spv::Id&)> idfn_t;
|
|
typedef std::function<bool(spv::Op, unsigned start)> instfn_t;
|
|
|
|
// Special Values for ID map:
|
|
static const spv::Id unmapped; // unchanged from default value
|
|
static const spv::Id unused; // unused ID
|
|
static const int header_size; // SPIR header = 5 words
|
|
|
|
class id_iterator_t;
|
|
|
|
// For mapping type entries between different shaders
|
|
typedef std::vector<spirword_t> typeentry_t;
|
|
typedef std::map<spv::Id, typeentry_t> globaltypes_t;
|
|
|
|
// A set that preserves position order, and a reverse map
|
|
typedef std::set<int> posmap_t;
|
|
typedef std::unordered_map<spv::Id, int> posmap_rev_t;
|
|
|
|
// Maps and ID to the size of its base type, if known.
|
|
typedef std::unordered_map<spv::Id, unsigned> typesize_map_t;
|
|
|
|
// handle error
|
|
void error(const std::string& txt) const { errorLatch = true; errorHandler(txt); }
|
|
|
|
bool isConstOp(spv::Op opCode) const;
|
|
bool isTypeOp(spv::Op opCode) const;
|
|
bool isStripOp(spv::Op opCode) const;
|
|
bool isFlowCtrl(spv::Op opCode) const;
|
|
range_t literalRange(spv::Op opCode) const;
|
|
range_t typeRange(spv::Op opCode) const;
|
|
range_t constRange(spv::Op opCode) const;
|
|
unsigned typeSizeInWords(spv::Id id) const;
|
|
unsigned idTypeSizeInWords(spv::Id id) const;
|
|
|
|
spv::Id& asId(unsigned word) { return spv[word]; }
|
|
const spv::Id& asId(unsigned word) const { return spv[word]; }
|
|
spv::Op asOpCode(unsigned word) const { return opOpCode(spv[word]); }
|
|
std::uint32_t asOpCodeHash(unsigned word);
|
|
spv::Decoration asDecoration(unsigned word) const { return spv::Decoration(spv[word]); }
|
|
unsigned asWordCount(unsigned word) const { return opWordCount(spv[word]); }
|
|
spv::Id asTypeConstId(unsigned word) const { return asId(word + (isTypeOp(asOpCode(word)) ? 1 : 2)); }
|
|
unsigned idPos(spv::Id id) const;
|
|
|
|
static unsigned opWordCount(spirword_t data) { return data >> spv::WordCountShift; }
|
|
static spv::Op opOpCode(spirword_t data) { return spv::Op(data & spv::OpCodeMask); }
|
|
|
|
// Header access & set methods
|
|
spirword_t magic() const { return spv[0]; } // return magic number
|
|
spirword_t bound() const { return spv[3]; } // return Id bound from header
|
|
spirword_t bound(spirword_t b) { return spv[3] = b; }
|
|
spirword_t genmagic() const { return spv[2]; } // generator magic
|
|
spirword_t genmagic(spirword_t m) { return spv[2] = m; }
|
|
spirword_t schemaNum() const { return spv[4]; } // schema number from header
|
|
|
|
// Mapping fns: get
|
|
spv::Id localId(spv::Id id) const { return idMapL[id]; }
|
|
|
|
// Mapping fns: set
|
|
inline spv::Id localId(spv::Id id, spv::Id newId);
|
|
void countIds(spv::Id id);
|
|
|
|
// Return next unused new local ID.
|
|
// NOTE: boost::dynamic_bitset would be more efficient due to find_next(),
|
|
// which std::vector<bool> doens't have.
|
|
inline spv::Id nextUnusedId(spv::Id id);
|
|
|
|
void buildLocalMaps();
|
|
std::string literalString(unsigned word) const; // Return literal as a std::string
|
|
int literalStringWords(const std::string& str) const { return (int(str.size())+4)/4; }
|
|
|
|
bool isNewIdMapped(spv::Id newId) const { return isMapped(newId); }
|
|
bool isOldIdUnmapped(spv::Id oldId) const { return localId(oldId) == unmapped; }
|
|
bool isOldIdUnused(spv::Id oldId) const { return localId(oldId) == unused; }
|
|
bool isOldIdMapped(spv::Id oldId) const { return !isOldIdUnused(oldId) && !isOldIdUnmapped(oldId); }
|
|
bool isFunction(spv::Id oldId) const { return fnPos.find(oldId) != fnPos.end(); }
|
|
|
|
// bool matchType(const globaltypes_t& globalTypes, spv::Id lt, spv::Id gt) const;
|
|
// spv::Id findType(const globaltypes_t& globalTypes, spv::Id lt) const;
|
|
std::uint32_t hashType(unsigned typeStart) const;
|
|
|
|
spirvbin_t& process(instfn_t, idfn_t, unsigned begin = 0, unsigned end = 0);
|
|
int processInstruction(unsigned word, instfn_t, idfn_t);
|
|
|
|
void validate() const;
|
|
void mapTypeConst();
|
|
void mapFnBodies();
|
|
void optLoadStore();
|
|
void dceFuncs();
|
|
void dceVars();
|
|
void dceTypes();
|
|
void mapNames();
|
|
void foldIds(); // fold IDs to smallest space
|
|
void forwardLoadStores(); // load store forwarding (EXPERIMENTAL)
|
|
void offsetIds(); // create relative offset IDs
|
|
|
|
void applyMap(); // remap per local name map
|
|
void mapRemainder(); // map any IDs we haven't touched yet
|
|
void stripDebug(); // strip all debug info
|
|
void stripDeadRefs(); // strips debug info for now-dead references after DCE
|
|
void strip(); // remove debug symbols
|
|
|
|
std::vector<spirword_t> spv; // SPIR words
|
|
|
|
namemap_t nameMap; // ID names from OpName
|
|
|
|
// Since we want to also do binary ops, we can't use std::vector<bool>. we could use
|
|
// boost::dynamic_bitset, but we're trying to avoid a boost dependency.
|
|
typedef std::uint64_t bits_t;
|
|
std::vector<bits_t> mapped; // which new IDs have been mapped
|
|
static const int mBits = sizeof(bits_t) * 4;
|
|
|
|
bool isMapped(spv::Id id) const { return id < maxMappedId() && ((mapped[id/mBits] & (1LL<<(id%mBits))) != 0); }
|
|
void setMapped(spv::Id id) { resizeMapped(id); mapped[id/mBits] |= (1LL<<(id%mBits)); }
|
|
void resizeMapped(spv::Id id) { if (id >= maxMappedId()) mapped.resize(id/mBits+1, 0); }
|
|
size_t maxMappedId() const { return mapped.size() * mBits; }
|
|
|
|
// Add a strip range for a given instruction starting at 'start'
|
|
// Note: avoiding brace initializers to please older versions os MSVC.
|
|
void stripInst(unsigned start) { stripRange.push_back(range_t(start, start + asWordCount(start))); }
|
|
|
|
// Function start and end. use unordered_map because we'll have
|
|
// many fewer functions than IDs.
|
|
std::unordered_map<spv::Id, range_t> fnPos;
|
|
|
|
// Which functions are called, anywhere in the module, with a call count
|
|
std::unordered_map<spv::Id, int> fnCalls;
|
|
|
|
posmap_t typeConstPos; // word positions that define types & consts (ordered)
|
|
posmap_rev_t idPosR; // reverse map from IDs to positions
|
|
typesize_map_t idTypeSizeMap; // maps each ID to its type size, if known.
|
|
|
|
std::vector<spv::Id> idMapL; // ID {M}ap from {L}ocal to {G}lobal IDs
|
|
|
|
spv::Id entryPoint; // module entry point
|
|
spv::Id largestNewId; // biggest new ID we have mapped anything to
|
|
|
|
// Sections of the binary to strip, given as [begin,end)
|
|
std::vector<range_t> stripRange;
|
|
|
|
// processing options:
|
|
std::uint32_t options;
|
|
int verbose; // verbosity level
|
|
|
|
// Error latch: this is set if the error handler is ever executed. It would be better to
|
|
// use a try/catch block and throw, but that's not desired for certain environments, so
|
|
// this is the alternative.
|
|
mutable bool errorLatch;
|
|
|
|
static errorfn_t errorHandler;
|
|
static logfn_t logHandler;
|
|
};
|
|
|
|
} // namespace SPV
|
|
|
|
#endif // defined (use_cpp11)
|
|
#endif // SPIRVREMAPPER_H
|