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VideoBackends: Support a different number of threads for precompiling

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At runtime, we only really want a single shader compiler thread.
However, for initial boots, we can use a higher number to speed things
up.
This commit is contained in:
Stenzek
2017-07-27 13:15:38 +10:00
parent e17efb1d8d
commit c8f31656cb
14 changed files with 81 additions and 27 deletions
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20
Source/Core/VideoCommon/AsyncShaderCompiler.cpp
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@ -106,8 +106,11 @@ void AsyncShaderCompiler::WaitUntilCompletion(
}
}
void AsyncShaderCompiler::StartWorkerThreads(u32 num_worker_threads)
bool AsyncShaderCompiler::StartWorkerThreads(u32 num_worker_threads)
{
if (num_worker_threads == 0)
return true;
for (u32 i = 0; i < num_worker_threads; i++)
{
void* thread_param = nullptr;
@ -131,6 +134,17 @@ void AsyncShaderCompiler::StartWorkerThreads(u32 num_worker_threads)
m_worker_threads.push_back(std::move(thr));
}
return HasWorkerThreads();
}
bool AsyncShaderCompiler::ResizeWorkerThreads(u32 num_worker_threads)
{
if (m_worker_threads.size() == num_worker_threads)
return true;
StopWorkerThreads();
return StartWorkerThreads(num_worker_threads);
}
bool AsyncShaderCompiler::HasWorkerThreads() const
@ -140,6 +154,9 @@ bool AsyncShaderCompiler::HasWorkerThreads() const
void AsyncShaderCompiler::StopWorkerThreads()
{
if (!HasWorkerThreads())
return;
// Signal worker threads to stop, and wake all of them.
{
std::lock_guard<std::mutex> guard(m_pending_work_lock);
@ -151,6 +168,7 @@ void AsyncShaderCompiler::StopWorkerThreads()
for (std::thread& thr : m_worker_threads)
thr.join();
m_worker_threads.clear();
m_exit_flag.Clear();
}
bool AsyncShaderCompiler::WorkerThreadInitMainThread(void** param)