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https://github.com/yuzu-emu/yuzu.git
synced 2024-08-21 00:33:21 +02:00
Rework multi-core vsync
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parent
9c31edccdf
commit
9d3b190465
@ -38,20 +38,16 @@ void NVFlinger::SplitVSync(std::stop_token stop_token) {
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Common::SetCurrentThreadName(name.c_str());
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Common::SetCurrentThreadPriority(Common::ThreadPriority::High);
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s64 delay = 0;
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while (!stop_token.stop_requested()) {
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vsync_signal.wait(false);
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vsync_signal.store(false);
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guard->lock();
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const s64 time_start = system.CoreTiming().GetGlobalTimeNs().count();
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Compose();
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const auto ticks = GetNextTicks();
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const s64 time_end = system.CoreTiming().GetGlobalTimeNs().count();
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const s64 time_passed = time_end - time_start;
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const s64 next_time = std::max<s64>(0, ticks - time_passed - delay);
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guard->unlock();
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if (next_time > 0) {
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std::this_thread::sleep_for(std::chrono::nanoseconds{next_time});
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}
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delay = (system.CoreTiming().GetGlobalTimeNs().count() - time_end) - next_time;
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}
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}
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@ -66,27 +62,41 @@ NVFlinger::NVFlinger(Core::System& system_, HosBinderDriverServer& hos_binder_dr
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guard = std::make_shared<std::mutex>();
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// Schedule the screen composition events
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composition_event = Core::Timing::CreateEvent(
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multi_composition_event = Core::Timing::CreateEvent(
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"ScreenComposition",
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[this](std::uintptr_t, s64 time,
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std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
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vsync_signal.store(true);
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vsync_signal.notify_all();
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return std::chrono::nanoseconds(GetNextTicks());
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});
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single_composition_event = Core::Timing::CreateEvent(
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"ScreenComposition",
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[this](std::uintptr_t, s64 time,
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std::chrono::nanoseconds ns_late) -> std::optional<std::chrono::nanoseconds> {
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const auto lock_guard = Lock();
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Compose();
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return std::max(std::chrono::nanoseconds::zero(),
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std::chrono::nanoseconds(GetNextTicks()) - ns_late);
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return std::chrono::nanoseconds(GetNextTicks());
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});
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if (system.IsMulticore()) {
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system.CoreTiming().ScheduleLoopingEvent(frame_ns, frame_ns, multi_composition_event);
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vsync_thread = std::jthread([this](std::stop_token token) { SplitVSync(token); });
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} else {
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system.CoreTiming().ScheduleLoopingEvent(frame_ns, frame_ns, composition_event);
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system.CoreTiming().ScheduleLoopingEvent(frame_ns, frame_ns, single_composition_event);
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}
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}
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NVFlinger::~NVFlinger() {
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if (!system.IsMulticore()) {
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system.CoreTiming().UnscheduleEvent(composition_event, 0);
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if (system.IsMulticore()) {
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system.CoreTiming().UnscheduleEvent(multi_composition_event, {});
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vsync_thread.request_stop();
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vsync_signal.store(true);
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vsync_signal.notify_all();
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} else {
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system.CoreTiming().UnscheduleEvent(single_composition_event, {});
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}
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for (auto& display : displays) {
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@ -126,12 +126,15 @@ private:
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u32 swap_interval = 1;
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/// Event that handles screen composition.
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std::shared_ptr<Core::Timing::EventType> composition_event;
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std::shared_ptr<Core::Timing::EventType> multi_composition_event;
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std::shared_ptr<Core::Timing::EventType> single_composition_event;
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std::shared_ptr<std::mutex> guard;
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Core::System& system;
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std::atomic<bool> vsync_signal;
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std::jthread vsync_thread;
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KernelHelpers::ServiceContext service_context;
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