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metaforce/hecl/lib/Runtime/ShaderCacheManager.cpp

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#include "HECL/Runtime.hpp"
#include <Athena/FileReader.hpp>
#include <Athena/FileWriter.hpp>
#include <zlib.h>
#include <algorithm>
#include <ctime>
#include "HECL/Backend/GLSL.hpp"
namespace HECL
{
namespace Runtime
{
IShaderBackendFactory* _NewGLSLBackendFactory(boo::IGraphicsDataFactory* gfxFactory);
static LogVisor::LogModule Log("ShaderCacheManager");
static uint64_t IDX_MAGIC = SBig(0xDEADFEEDC001D00D);
static uint64_t DAT_MAGIC = SBig(0xC001D00DDEADBABE);
static uint64_t ZERO64 = 0;
static uint64_t timeHash()
{
char buf[80];
time_t now;
struct tm* timeinfo;
time(&now);
timeinfo = localtime(&now);
strftime(buf, 80, "%Y-%m-%dT%H:%M:%S+%H:%M", timeinfo);
Hash tmp(buf, 80);
return tmp.val64();
}
static void UpdateFunctionHash(XXH64_state_t* st, const ShaderCacheExtensions::Function& func)
{
if (func.m_source)
XXH64_update(st, func.m_source, strlen(func.m_source));
if (func.m_entry)
XXH64_update(st, func.m_entry, strlen(func.m_entry));
}
uint64_t ShaderCacheExtensions::hashExtensions() const
{
XXH64_state_t st;
XXH64_reset(&st, 0);
for (const ExtensionSlot& slot : m_extensionSlots)
{
UpdateFunctionHash(&st, slot.lighting);
UpdateFunctionHash(&st, slot.post);
}
return XXH64_digest(&st);
}
void ShaderCacheManager::bootstrapIndex()
{
m_timeHash = timeHash();
m_idxFr.close();
m_datFr.close();
#if _WIN32
SystemString idxFilename = m_idxFr.wfilename();
#else
SystemString idxFilename = m_idxFr.filename();
#endif
FILE* idxFp = HECL::Fopen(idxFilename.c_str(), _S("wb"));
if (!idxFp)
Log.report(LogVisor::FatalError, _S("unable to write shader cache index at %s"),
idxFilename.c_str());
fwrite(&IDX_MAGIC, 1, 8, idxFp);
fwrite(&m_timeHash, 1, 8, idxFp);
fwrite(&m_extensionsHash, 1, 8, idxFp);
fwrite(&ZERO64, 1, 8, idxFp);
fclose(idxFp);
#if _WIN32
SystemString datFilename = m_datFr.wfilename();
#else
SystemString datFilename = m_datFr.filename();
#endif
FILE* datFp = HECL::Fopen(datFilename.c_str(), _S("wb"));
if (!datFp)
Log.report(LogVisor::FatalError, _S("unable to write shader cache data at %s"),
idxFilename.c_str());
fwrite(&DAT_MAGIC, 1, 8, datFp);
fwrite(&m_timeHash, 1, 8, datFp);
fclose(datFp);
m_idxFr.open();
m_datFr.open();
}
ShaderCacheManager::ShaderCacheManager(const FileStoreManager& storeMgr,
boo::IGraphicsDataFactory* gfxFactory,
ShaderCacheExtensions&& extension)
: m_storeMgr(storeMgr),
m_extensions(std::move(extension)),
m_idxFr(storeMgr.getStoreRoot() + _S("/shadercache") + gfxFactory->platformName() + _S(".idx")),
m_datFr(storeMgr.getStoreRoot() + _S("/shadercache") + gfxFactory->platformName() + _S(".dat"))
{
boo::IGraphicsDataFactory::Platform plat = gfxFactory->platform();
if (m_extensions && m_extensions.m_plat != plat)
Log.report(LogVisor::FatalError, "ShaderCacheExtension backend mismatch (should be %s)",
gfxFactory->platformName());
m_extensionsHash = m_extensions.hashExtensions();
switch (plat)
{
case boo::IGraphicsDataFactory::PlatformOGL:
m_factory.reset(_NewGLSLBackendFactory(gfxFactory));
break;
default:
Log.report(LogVisor::FatalError, "unsupported backend %s", gfxFactory->platformName());
}
reload();
}
void ShaderCacheManager::reload()
{
m_entries.clear();
m_entryLookup.clear();
m_timeHash = 0;
/* Attempt to open existing index */
m_idxFr.seek(0, Athena::Begin);
m_datFr.seek(0, Athena::Begin);
if (m_idxFr.hasError() || m_datFr.hasError())
{
bootstrapIndex();
return;
}
else
{
uint64_t idxMagic;
size_t rb = m_idxFr.readUBytesToBuf(&idxMagic, 8);
if (rb != 8 || idxMagic != IDX_MAGIC)
{
bootstrapIndex();
return;
}
uint64_t datMagic;
rb = m_datFr.readUBytesToBuf(&datMagic, 8);
if (rb != 8 || datMagic != DAT_MAGIC)
{
bootstrapIndex();
return;
}
uint64_t idxRand, datRand;
rb = m_idxFr.readUBytesToBuf(&idxRand, 8);
size_t rb2 = m_datFr.readUBytesToBuf(&datRand, 8);
if (rb != 8 || rb2 != 8 || idxRand != datRand)
{
bootstrapIndex();
return;
}
m_timeHash = idxRand;
}
atUint64 extensionsHash;
size_t rb = m_idxFr.readUBytesToBuf(&extensionsHash, 8);
if (rb != 8 || extensionsHash != m_extensionsHash)
{
bootstrapIndex();
return;
}
atUint64 idxCount = m_idxFr.readUint64Big();
if (m_idxFr.position() != 32)
{
bootstrapIndex();
return;
}
/* Read existing entries */
if (idxCount)
{
m_entries.reserve(idxCount);
m_entryLookup.reserve(idxCount);
for (atUint64 i=0 ; i<idxCount ; ++i)
{
m_entries.emplace_back();
IndexEntry& ent = m_entries.back();
ent.read(m_idxFr);
m_entryLookup[ent.m_hash] = m_entries.size() - 1;
}
}
}
ShaderCachedData ShaderCacheManager::lookupData(const Hash& hash)
{
auto search = m_entryLookup.find(hash);
if (search == m_entryLookup.cend())
return ShaderCachedData();
const IndexEntry& ent = m_entries[search->second];
if (ent.m_compOffset + ent.m_compSize > m_datFr.length())
{
Log.report(LogVisor::Warning, "shader cache not long enough to read entry, might be corrupt");
return ShaderCachedData();
}
/* File-streamed decompression */
m_datFr.seek(ent.m_compOffset, Athena::Begin);
ShaderCachedData ret(ShaderTag(ent.m_hash, ent.m_meta), ent.m_decompSize);
uint8_t compDat[2048];
z_stream z = {};
inflateInit(&z);
z.avail_out = ent.m_decompSize;
z.next_out = ret.m_data.get();
while (z.avail_out)
{
z.avail_in = std::min(size_t(2048), size_t(ent.m_compSize - z.total_in));
m_datFr.readUBytesToBuf(compDat, z.avail_in);
z.next_in = compDat;
inflate(&z, Z_NO_FLUSH);
}
inflateEnd(&z);
return ret;
}
bool ShaderCacheManager::addData(const ShaderCachedData& data)
{
m_idxFr.close();
m_datFr.close();
/* Perform one-shot buffer compression */
uLong cBound = compressBound(data.m_sz);
void* compBuf = malloc(cBound);
if (compress((Bytef*)compBuf, &cBound, (Bytef*)data.m_data.get(), data.m_sz) != Z_OK)
Log.report(LogVisor::FatalError, "unable to deflate data");
/* Open index for writing (non overwriting) */
Athena::io::FileWriter idxFw(m_idxFr.filename(), false);
if (idxFw.hasError())
Log.report(LogVisor::FatalError, _S("unable to append shader cache index at %s"),
m_idxFr.filename().c_str());
/* Open data for writing (non overwriting) */
Athena::io::FileWriter datFw(m_datFr.filename(), false);
if (datFw.hasError())
Log.report(LogVisor::FatalError, _S("unable to append shader cache data at %s"),
m_datFr.filename().c_str());
size_t targetOffset = 0;
auto search = m_entryLookup.find(data.m_tag);
if (search != m_entryLookup.cend())
{
/* Hash already present, attempt to replace data */
IndexEntry& ent = m_entries[search->second];
if (search->second == m_entries.size() - 1)
{
/* Replacing final entry; simply write-over */
ent.m_meta = data.m_tag.getMetaData();
ent.m_compSize = cBound;
ent.m_decompSize = data.m_sz;
targetOffset = ent.m_compOffset;
idxFw.seek(search->second * 32 + 32);
ent.write(idxFw);
}
else
{
/* Replacing non-final entry; write into available space */
IndexEntry& nent = m_entries[search->second+1];
size_t space = nent.m_compOffset - ent.m_compOffset;
if (cBound <= space)
{
ent.m_meta = data.m_tag.getMetaData();
ent.m_compSize = cBound;
ent.m_decompSize = data.m_sz;
targetOffset = ent.m_compOffset;
idxFw.seek(search->second * 32 + 32);
ent.write(idxFw);
}
else
{
/* Not enough space; null-entry and add to end */
ent.m_hash = 0;
ent.m_meta = 0;
ent.m_compOffset = 0;
ent.m_compSize = 0;
ent.m_decompSize = 0;
idxFw.seek(search->second * 32 + 32);
ent.write(idxFw);
}
}
}
if (!targetOffset)
{
/* New index entry at end */
idxFw.seek(16, Athena::Begin);
idxFw.writeUint64Big(m_entries.size() + 1);
idxFw.seek(m_entries.size() * 32 + 32, Athena::Begin);
datFw.seek(0, Athena::End);
m_entryLookup[data.m_tag] = m_entries.size();
m_entries.emplace_back();
IndexEntry& ent = m_entries.back();
ent.m_hash = data.m_tag.val64();
ent.m_meta = data.m_tag.getMetaData();
ent.m_compOffset = datFw.position();
ent.m_compSize = cBound;
ent.m_decompSize = data.m_sz;
ent.write(idxFw);
datFw.writeUBytes((atUint8*)compBuf, cBound);
}
else
{
/* Reusing index entry and data space */
datFw.seek(targetOffset, Athena::Begin);
datFw.writeUBytes((atUint8*)compBuf, cBound);
}
free(compBuf);
idxFw.close();
datFw.close();
m_idxFr.open();
m_datFr.open();
return true;
}
boo::IShaderPipeline*
ShaderCacheManager::buildFromCache(const ShaderCachedData& foundData)
{
return m_factory->buildShaderFromCache(foundData);
}
boo::IShaderPipeline*
ShaderCacheManager::buildShader(const ShaderTag& tag, const std::string& source,
const std::string& diagName)
{
ShaderCachedData foundData = lookupData(tag);
if (foundData)
return buildFromCache(foundData);
HECL::Frontend::IR ir = FE.compileSource(source, diagName);
return buildShader(tag, ir, diagName);
}
boo::IShaderPipeline*
ShaderCacheManager::buildShader(const ShaderTag& tag, const HECL::Frontend::IR& ir,
const std::string& diagName)
{
ShaderCachedData foundData = lookupData(tag);
if (foundData)
return buildFromCache(foundData);
FE.getDiagnostics().reset(diagName);
boo::IShaderPipeline* ret;
addData(m_factory->buildShaderFromIR(tag, ir, FE.getDiagnostics(), &ret));
return ret;
}
std::vector<boo::IShaderPipeline*>
ShaderCacheManager::buildExtendedFromCache(const ShaderCachedData& foundData)
{
std::vector<boo::IShaderPipeline*> shaders;
shaders.reserve(m_extensions.m_extensionSlots.size());
m_factory->buildExtendedShaderFromCache(foundData, m_extensions.m_extensionSlots,
[&](boo::IShaderPipeline* shader){shaders.push_back(shader);});
if (shaders.size() != m_extensions.m_extensionSlots.size())
Log.report(LogVisor::FatalError, "buildShaderFromCache returned %" PRISize " times, expected %" PRISize,
shaders.size(), m_extensions.m_extensionSlots.size());
return shaders;
}
std::vector<boo::IShaderPipeline*>
ShaderCacheManager::buildExtendedShader(const ShaderTag& tag, const std::string& source,
const std::string& diagName)
{
ShaderCachedData foundData = lookupData(tag);
if (foundData)
return buildExtendedFromCache(foundData);
HECL::Frontend::IR ir = FE.compileSource(source, diagName);
return buildExtendedShader(tag, ir, diagName);
}
std::vector<boo::IShaderPipeline*>
ShaderCacheManager::buildExtendedShader(const ShaderTag& tag, const HECL::Frontend::IR& ir,
const std::string& diagName)
{
ShaderCachedData foundData = lookupData(tag);
if (foundData)
return buildExtendedFromCache(foundData);
std::vector<boo::IShaderPipeline*> shaders;
shaders.reserve(m_extensions.m_extensionSlots.size());
FE.getDiagnostics().reset(diagName);
ShaderCachedData data =
m_factory->buildExtendedShaderFromIR(tag, ir, FE.getDiagnostics(), m_extensions.m_extensionSlots,
[&](boo::IShaderPipeline* shader){shaders.push_back(shader);});
if (shaders.size() != m_extensions.m_extensionSlots.size())
Log.report(LogVisor::FatalError, "buildShaderFromIR returned %" PRISize " times, expected %" PRISize,
shaders.size(), m_extensions.m_extensionSlots.size());
addData(data);
return shaders;
}
}
}
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