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baldurk
141 lines
4.7 KiB
C++
141 lines
4.7 KiB
C++
/******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2019-2022 Baldur Karlsson
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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******************************************************************************/
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#pragma once
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#include <map>
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#include "common/common.h"
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#include "serialise/streamio.h"
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#include "serialise/zstdio.h"
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static const uint32_t ShaderCacheMagic = MAKE_FOURCC('R', 'D', '$', '$');
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template <typename ResultType, typename ShaderCallbacks>
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bool LoadShaderCache(const rdcstr &filename, const uint32_t magicNumber, const uint32_t versionNumber,
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std::map<uint32_t, ResultType> &resultCache, const ShaderCallbacks &callbacks)
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{
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rdcstr shadercache = FileIO::GetAppFolderFilename(filename);
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StreamReader fileReader(FileIO::fopen(shadercache, FileIO::ReadBinary));
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uint32_t globalMagic = 0, localMagic = 0, version = 0;
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fileReader.Read(globalMagic);
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fileReader.Read(localMagic);
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fileReader.Read(version);
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if(globalMagic != ShaderCacheMagic || localMagic != magicNumber || version != versionNumber)
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return false;
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uint64_t uncompressedSize = 0;
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fileReader.Read(uncompressedSize);
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// header has been read. The rest is zstd compressed
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StreamReader compressedReader(new ZSTDDecompressor(&fileReader, Ownership::Nothing),
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uncompressedSize, Ownership::Stream);
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uint32_t numentries = 0;
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compressedReader.Read(numentries);
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bool ret = true;
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bytebuf data;
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for(uint32_t i = 0; i < numentries; i++)
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{
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uint32_t hash = 0, length = 0;
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compressedReader.Read(hash);
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compressedReader.Read(length);
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data.resize(length);
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compressedReader.Read(data.data(), length);
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ResultType result;
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bool created = callbacks.Create(length, data.data(), &result);
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if(!created)
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{
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RDCERR("Couldn't create blob of size %u from shadercache", length);
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ret = false;
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break;
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}
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resultCache[hash] = result;
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}
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return ret && !compressedReader.IsErrored() && !fileReader.IsErrored();
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}
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template <typename ResultType, typename ShaderCallbacks>
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void SaveShaderCache(const rdcstr &filename, uint32_t magicNumber, uint32_t versionNumber,
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const std::map<uint32_t, ResultType> &cache, const ShaderCallbacks &callbacks)
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{
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rdcstr shadercache = FileIO::GetAppFolderFilename(filename);
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FILE *f = FileIO::fopen(shadercache, FileIO::WriteBinary);
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if(!f)
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{
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RDCERR("Error opening shader cache for write");
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return;
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}
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StreamWriter fileWriter(f, Ownership::Stream);
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fileWriter.Write(ShaderCacheMagic);
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fileWriter.Write(magicNumber);
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fileWriter.Write(versionNumber);
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uint32_t numentries = (uint32_t)cache.size();
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uint64_t uncompressedSize = sizeof(numentries); // number of entries
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// hash + length + data for each entry
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for(auto it = cache.begin(); it != cache.end(); ++it)
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uncompressedSize += sizeof(uint32_t) * 2 + callbacks.GetSize(it->second);
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fileWriter.Write(uncompressedSize);
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StreamWriter compressedWriter(new ZSTDCompressor(&fileWriter, Ownership::Nothing),
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Ownership::Stream);
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compressedWriter.Write(numentries);
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for(auto it = cache.begin(); it != cache.end(); ++it)
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{
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uint32_t hash = it->first;
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uint32_t len = callbacks.GetSize(it->second);
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const byte *data = callbacks.GetData(it->second);
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compressedWriter.Write(hash);
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compressedWriter.Write(len);
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compressedWriter.Write(data, len);
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callbacks.Destroy(it->second);
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}
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compressedWriter.Finish();
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RDCDEBUG("Successfully wrote %u entries to cache, compressed from %llu to %llu", numentries,
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uncompressedSize, fileWriter.GetOffset());
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}
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