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[dxvk] Only create state cache file on demand

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If no pipelines are ever written to it, we should not create
the cache file in the first place.
This commit is contained in:
Philip Rebohle 2023-01-09 18:29:15 +01:00
parent 6a4fe06ac6
commit 06fb93daf0
2 changed files with 62 additions and 29 deletions
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84
src/dxvk/dxvk_state_cache.cpp
View File

@ -242,26 +242,7 @@ namespace dxvk {
bool newFile = (useStateCache == "reset") || (!readCacheFile());
if (newFile) {
Logger::warn("DXVK: Creating new state cache file");
// Start with an empty file
std::ofstream file(getCacheFileName().c_str(),
std::ios_base::binary |
std::ios_base::trunc);
if (!file && env::createDirectory(getCacheDir())) {
file = std::ofstream(getCacheFileName().c_str(),
std::ios_base::binary |
std::ios_base::trunc);
}
// Write header with the current version number
DxvkStateCacheHeader header;
auto data = reinterpret_cast<const char*>(&header);
auto size = sizeof(header);
file.write(data, size);
auto file = openCacheFileForWrite(true);
// Write all valid entries to the cache file in
// case we're recovering a corrupted cache file
@ -454,12 +435,13 @@ namespace dxvk {
bool DxvkStateCache::readCacheFile() {
// Open state file and just fail if it doesn't exist
std::ifstream ifile(getCacheFileName().c_str(), std::ios_base::binary);
// Return success if the file was not found.
// This way we will only create it on demand.
std::ifstream ifile = openCacheFileForRead();
if (!ifile) {
Logger::warn("DXVK: No state cache file found");
return false;
return true;
}
// The header stores the state cache version,
@ -771,11 +753,8 @@ namespace dxvk {
m_writerQueue.pop();
}
if (!file.is_open()) {
file.open(getCacheFileName().c_str(),
std::ios_base::binary |
std::ios_base::app);
}
if (!file.is_open())
file = openCacheFileForWrite(false);
writeCacheEntry(file, entry);
}
@ -806,6 +785,55 @@ namespace dxvk {
}
std::ifstream DxvkStateCache::openCacheFileForRead() const {
return std::ifstream(getCacheFileName().c_str(), std::ios_base::binary);
}
std::ofstream DxvkStateCache::openCacheFileForWrite(bool recreate) const {
std::ofstream file;
if (!recreate) {
// Apparently there's no other way to check whether
// the file is empty after creating an ofstream
recreate = !openCacheFileForRead();
}
if (recreate) {
file = std::ofstream(getCacheFileName().c_str(),
std::ios_base::binary |
std::ios_base::trunc);
if (!file && env::createDirectory(getCacheDir())) {
file = std::ofstream(getCacheFileName().c_str(),
std::ios_base::binary |
std::ios_base::trunc);
}
} else {
file = std::ofstream(getCacheFileName().c_str(),
std::ios_base::binary |
std::ios_base::app);
}
if (!file)
return file;
if (recreate) {
Logger::warn("DXVK: Creating new state cache file");
// Write header with the current version number
DxvkStateCacheHeader header;
auto data = reinterpret_cast<const char*>(&header);
auto size = sizeof(header);
file.write(data, size);
}
return file;
}
std::string DxvkStateCache::getCacheDir() const {
return env::getEnvVar("DXVK_STATE_CACHE_PATH");
}

5
src/dxvk/dxvk_state_cache.h
View File

@ -161,6 +161,11 @@ namespace dxvk {
str::path_string getCacheFileName() const;
std::ifstream openCacheFileForRead() const;
std::ofstream openCacheFileForWrite(
bool recreate) const;
std::string getCacheDir() const;
};