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Vulkan/ShaderCache: Skip writing pipeline cache when size matches

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Comparing all the data wasn't working, at least for Intel. I'm guessing
there's some modification time field in there which keeps changing.
This commit is contained in:
Connor McLaughlin
2020-06-22 15:58:10 +10:00
parent eaca5eca07
commit 9265dd72ba
1 changed files with 3 additions and 4 deletions
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7
src/common/vulkan/shader_cache.cpp
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@ -344,9 +344,8 @@ bool ShaderCache::FlushPipelineCache()
data.resize(data_size);
// Save disk writes if it hasn't changed, think of the poor SSDs.
std::optional<std::vector<u8>> existing_data = FileSystem::ReadBinaryFile(m_pipeline_cache_filename.c_str());
if (!existing_data.has_value() || existing_data->size() != data_size ||
std::memcmp(existing_data->data(), data.data(), data_size) != 0)
FILESYSTEM_STAT_DATA sd;
if (!FileSystem::StatFile(m_pipeline_cache_filename.c_str(), &sd) || sd.Size != static_cast<u64>(data_size))
{
Log_InfoPrintf("Writing %zu bytes to '%s'", data_size, m_pipeline_cache_filename.c_str());
if (!FileSystem::WriteBinaryFile(m_pipeline_cache_filename.c_str(), data.data(), data.size()))
@ -357,7 +356,7 @@ bool ShaderCache::FlushPipelineCache()
}
else
{
Log_WarningPrintf("Skipping updating pipeline cache '%s' due to no changes.", m_pipeline_cache_filename.c_str());
Log_InfoPrintf("Skipping updating pipeline cache '%s' due to no changes.", m_pipeline_cache_filename.c_str());
}
m_pipeline_cache_dirty = false;