imgui / netplay: toggle desync messages & clear netplay messages.

src/core/netplay.cpp

@@ -148,6 +148,7 @@ static void GenerateChecksumForFrame(int* checksum, int frame, unsigned char* bu
 
 static MemorySettingsInterface s_settings_overlay;
 static SessionState s_state;
+static bool send_desync_notifications = false;
 
 /// Enet
 struct Peer
@@ -1933,10 +1934,18 @@ void Netplay::UpdateThrottlePeriod()
     Common::Timer::ConvertSecondsToValue(1.0 / (static_cast<double>(System::GetThrottleFrequency()) * s_target_speed));
 }
 
+void Netplay::ToggleDesyncNotifications()
+{
+  bool was_enabled = send_desync_notifications;
+  send_desync_notifications = send_desync_notifications ? false : true;
+  if (was_enabled)
+    Host::ClearNetplayMessages();
+}
+
 void Netplay::HandleTimeSyncEvent(float frame_delta, int update_interval)
 {
   // only activate timesync if its worth correcting.
-  if (std::abs(frame_delta) < 1.0f)
+  if (std::abs(frame_delta) < 1.75f)
     return;
   // Distribute the frame difference over the next N * 0.75 frames.
   // only part of the interval time is used since we want to come back to normal speed.

src/core/netplay.h

@@ -53,4 +53,6 @@ u32 GetMaxPrediction();
 /// Updates the throttle period, call when target emulation speed changes.
 void UpdateThrottlePeriod();
 
+void ToggleDesyncNotifications();
+
 } // namespace Netplay

src/core/system.h

@@ -521,4 +521,5 @@ bool IsFullscreen();
 void SetFullscreen(bool enabled);
 // netplay
 void OnNetplayMessage(std::string message);
+void ClearNetplayMessages();
 } // namespace Host

src/frontend-common/imgui_netplay.cpp

@@ -77,6 +77,12 @@ void Host::OnNetplayMessage(std::string message)
                                                         Common::Timer::ConvertSecondsToValue(NETPLAY_MESSAGE_DURATION));
 }
 
+void Host::ClearNetplayMessages()
+{
+  while (s_netplay_messages.size() > 0)
+    s_netplay_messages.pop_front();
+}
+
 void ImGuiManager::RenderNetplayOverlays()
 {
   DrawNetplayMessages();