Frontends: Add frame time performance counters

src/core/host_interface.cpp

@@ -433,26 +433,43 @@ void HostInterface::UpdateSpeedLimiterState()
   m_last_throttle_time = 0;
 }
 
+void HostInterface::OnPerformanceCountersUpdated() {}
+
+void HostInterface::RunFrame()
+{
+  m_frame_timer.Reset();
+  m_system->RunFrame();
+  UpdatePerformanceCounters();
+}
+
 void HostInterface::UpdatePerformanceCounters()
 {
-  if (!m_system)
+  const float frame_time = static_cast<float>(m_frame_timer.GetTimeMilliseconds());
-    return;
+  m_average_frame_time_accumulator += frame_time;
+  m_worst_frame_time_accumulator = std::max(m_worst_frame_time_accumulator, frame_time);
 
   // update fps counter
-  const double time = m_fps_timer.GetTimeSeconds();
+  const float time = static_cast<float>(m_fps_timer.GetTimeSeconds());
-  if (time >= 0.25f)
+  if (time < 1.0f)
-  {
+    return;
-    m_vps = static_cast<float>(static_cast<double>(m_system->GetFrameNumber() - m_last_frame_number) / time);
+
+  const float frames_presented = static_cast<float>(m_system->GetFrameNumber() - m_last_frame_number);
+
+  m_worst_frame_time = m_worst_frame_time_accumulator;
+  m_worst_frame_time_accumulator = 0.0f;
+  m_average_frame_time = m_average_frame_time_accumulator / frames_presented;
+  m_average_frame_time_accumulator = 0.0f;
+  m_vps = static_cast<float>(frames_presented / time);
   m_last_frame_number = m_system->GetFrameNumber();
-    m_fps =
+  m_fps = static_cast<float>(m_system->GetInternalFrameNumber() - m_last_internal_frame_number) / time;
-      static_cast<float>(static_cast<double>(m_system->GetInternalFrameNumber() - m_last_internal_frame_number) / time);
   m_last_internal_frame_number = m_system->GetInternalFrameNumber();
   m_speed = static_cast<float>(static_cast<double>(m_system->GetGlobalTickCounter() - m_last_global_tick_counter) /
                                (static_cast<double>(MASTER_CLOCK) * time)) *
             100.0f;
   m_last_global_tick_counter = m_system->GetGlobalTickCounter();
   m_fps_timer.Reset();
-  }
+
+  OnPerformanceCountersUpdated();
 }
 
 void HostInterface::ResetPerformanceCounters()
@@ -469,5 +486,7 @@ void HostInterface::ResetPerformanceCounters()
     m_last_internal_frame_number = 0;
     m_last_global_tick_counter = 0;
   }
+  m_average_frame_time_accumulator = 0.0f;
+  m_worst_frame_time_accumulator = 0.0f;
   m_fps_timer.Reset();
 }

src/core/host_interface.h

@@ -72,6 +72,10 @@ protected:
     float duration;
   };
 
+  virtual void OnPerformanceCountersUpdated();
+
+  void RunFrame();
+
   /// Throttles the system, i.e. sleeps until it's time to execute the next frame.
   void Throttle();
 
@@ -95,18 +99,24 @@ protected:
   Common::Timer m_throttle_timer;
   Common::Timer m_speed_lost_time_timestamp;
 
+  bool m_paused = false;
+  bool m_speed_limiter_temp_disabled = false;
+  bool m_speed_limiter_enabled = false;
+
+  float m_average_frame_time_accumulator = 0.0f;
+  float m_worst_frame_time_accumulator = 0.0f;
+
   float m_vps = 0.0f;
   float m_fps = 0.0f;
   float m_speed = 0.0f;
+  float m_worst_frame_time = 0.0f;
+  float m_average_frame_time = 0.0f;
   u32 m_last_frame_number = 0;
   u32 m_last_internal_frame_number = 0;
   u32 m_last_global_tick_counter = 0;
   Common::Timer m_fps_timer;
+  Common::Timer m_frame_timer;
 
   std::deque<OSDMessage> m_osd_messages;
   std::mutex m_osd_messages_lock;
-
-  bool m_paused = false;
-  bool m_speed_limiter_temp_disabled = false;
-  bool m_speed_limiter_enabled = false;
 };

src/duckstation-qt/mainwindow.cpp

@@ -6,6 +6,7 @@
 #include "qtsettingsinterface.h"
 #include "settingsdialog.h"
 #include <QtWidgets/QFileDialog>
+#include <cmath>
 
 static constexpr char DISC_IMAGE_FILTER[] =
   "All File Types (*.bin *.img *.cue *.exe *.psexe);;Single-Track Raw Images (*.bin *.img);;Cue Sheets "
@@ -124,6 +125,16 @@ void MainWindow::switchRenderer()
   }
 }
 
+void MainWindow::onPerformanceCountersUpdated(float speed, float fps, float vps, float average_frame_time,
+                                              float worst_frame_time)
+{
+  m_status_speed_widget->setText(QStringLiteral("%1%").arg(speed, 0, 'f', 0));
+  m_status_fps_widget->setText(
+    QStringLiteral("FPS: %1/%2").arg(std::round(fps), 0, 'f', 0).arg(std::round(vps), 0, 'f', 0));
+  m_status_frame_time_widget->setText(
+    QStringLiteral("%1ms average, %2ms worst").arg(average_frame_time, 0, 'f', 2).arg(worst_frame_time, 0, 'f', 2));
+}
+
 void MainWindow::onStartDiscActionTriggered()
 {
   QString filename =
@@ -183,6 +194,21 @@ void MainWindow::setupAdditionalUi()
 
   m_ui.mainContainer->setCurrentIndex(0);
 
+  m_status_speed_widget = new QLabel(m_ui.statusBar);
+  m_status_speed_widget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
+  m_status_speed_widget->setFixedSize(40, 16);
+  m_status_speed_widget->hide();
+
+  m_status_fps_widget = new QLabel(m_ui.statusBar);
+  m_status_fps_widget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
+  m_status_fps_widget->setFixedSize(80, 16);
+  m_status_fps_widget->hide();
+
+  m_status_frame_time_widget = new QLabel(m_ui.statusBar);
+  m_status_frame_time_widget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
+  m_status_frame_time_widget->setFixedSize(190, 16);
+  m_status_frame_time_widget->hide();
+
   for (u32 i = 0; i < static_cast<u32>(GPURenderer::Count); i++)
   {
     const GPURenderer renderer = static_cast<GPURenderer>(i);
@@ -215,6 +241,27 @@ void MainWindow::updateEmulationActions(bool starting, bool running)
   m_ui.actionSaveState->setDisabled(starting);
 
   m_ui.actionFullscreen->setDisabled(starting || !running);
+
+  if (running && m_status_speed_widget->isHidden())
+  {
+    m_status_speed_widget->show();
+    m_status_fps_widget->show();
+    m_status_frame_time_widget->show();
+    m_ui.statusBar->addPermanentWidget(m_status_speed_widget);
+    m_ui.statusBar->addPermanentWidget(m_status_fps_widget);
+    m_ui.statusBar->addPermanentWidget(m_status_frame_time_widget);
+  }
+  else if (!running && m_status_speed_widget->isVisible())
+  {
+    m_ui.statusBar->removeWidget(m_status_speed_widget);
+    m_ui.statusBar->removeWidget(m_status_fps_widget);
+    m_ui.statusBar->removeWidget(m_status_frame_time_widget);
+    m_status_speed_widget->hide();
+    m_status_fps_widget->hide();
+    m_status_frame_time_widget->hide();
+  }
+
+  m_ui.statusBar->clearMessage();
 }
 
 void MainWindow::switchToGameListView()
@@ -259,6 +306,8 @@ void MainWindow::connectSignals()
   connect(m_host_interface, &QtHostInterface::emulationStopped, this, &MainWindow::onEmulationStopped);
   connect(m_host_interface, &QtHostInterface::emulationPaused, this, &MainWindow::onEmulationPaused);
   connect(m_host_interface, &QtHostInterface::toggleFullscreenRequested, this, &MainWindow::toggleFullscreen);
+  connect(m_host_interface, &QtHostInterface::performanceCountersUpdated, this,
+          &MainWindow::onPerformanceCountersUpdated);
 
   connect(m_game_list_widget, &GameListWidget::bootEntryRequested, [this](const GameList::GameListEntry* entry) {
     // if we're not running, boot the system, otherwise swap discs
@@ -274,6 +323,15 @@ void MainWindow::connectSignals()
       switchToEmulationView();
     }
   });
+  connect(m_game_list_widget, &GameListWidget::entrySelected, [this](const GameList::GameListEntry* entry) {
+    if (!entry)
+    {
+      m_ui.statusBar->clearMessage();
+      return;
+    }
+
+    m_ui.statusBar->showMessage(QString::fromStdString(entry->path));
+  });
 }
 
 void MainWindow::doSettings(SettingsDialog::Category category)

src/duckstation-qt/mainwindow.h

@@ -7,6 +7,8 @@
 #include "settingsdialog.h"
 #include "ui_mainwindow.h"
 
+class QLabel;
+
 class GameList;
 class GameListWidget;
 class QtHostInterface;
@@ -26,6 +28,8 @@ private Q_SLOTS:
   void onEmulationPaused(bool paused);
   void toggleFullscreen();
   void switchRenderer();
+  void onPerformanceCountersUpdated(float speed, float fps, float vps, float average_frame_time,
+                                    float worst_frame_time);
 
   void onStartDiscActionTriggered();
   void onChangeDiscActionTriggered();
@@ -53,6 +57,10 @@ private:
   GameListWidget* m_game_list_widget = nullptr;
   QWidget* m_display_widget = nullptr;
 
+  QLabel* m_status_speed_widget = nullptr;
+  QLabel* m_status_fps_widget = nullptr;
+  QLabel* m_status_frame_time_widget = nullptr;
+
   SettingsDialog* m_settings_dialog = nullptr;
 
   bool m_emulation_running = false;

src/duckstation-qt/mainwindow.ui

@@ -14,7 +14,7 @@
    <string>DuckStation</string>
   </property>
   <property name="windowIcon">
-   <iconset resource="icons.qrc">
+   <iconset resource="resources/icons.qrc">
     <normaloff>:/icons/duck.png</normaloff>:/icons/duck.png</iconset>
   </property>
   <widget class="QStackedWidget" name="mainContainer">
@@ -30,7 +30,7 @@
      <x>0</x>
      <y>0</y>
      <width>754</width>
-     <height>21</height>
+     <height>22</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuSystem">
@@ -128,9 +128,10 @@
    <addaction name="actionFullscreen"/>
    <addaction name="actionSettings"/>
   </widget>
+  <widget class="QStatusBar" name="statusBar"/>
   <action name="actionStartDisc">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/drive-optical.png</normaloff>:/icons/drive-optical.png</iconset>
    </property>
    <property name="text">
@@ -139,7 +140,7 @@
   </action>
   <action name="actionStartBios">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/drive-removable-media.png</normaloff>:/icons/drive-removable-media.png</iconset>
    </property>
    <property name="text">
@@ -148,7 +149,7 @@
   </action>
   <action name="actionPowerOff">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/system-shutdown.png</normaloff>:/icons/system-shutdown.png</iconset>
    </property>
    <property name="text">
@@ -157,7 +158,7 @@
   </action>
   <action name="actionReset">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/view-refresh.png</normaloff>:/icons/view-refresh.png</iconset>
    </property>
    <property name="text">
@@ -169,7 +170,7 @@
     <bool>true</bool>
    </property>
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/media-playback-pause.png</normaloff>:/icons/media-playback-pause.png</iconset>
    </property>
    <property name="text">
@@ -178,7 +179,7 @@
   </action>
   <action name="actionLoadState">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/document-open.png</normaloff>:/icons/document-open.png</iconset>
    </property>
    <property name="text">
@@ -187,7 +188,7 @@
   </action>
   <action name="actionSaveState">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/document-save.png</normaloff>:/icons/document-save.png</iconset>
    </property>
    <property name="text">
@@ -201,7 +202,7 @@
   </action>
   <action name="actionConsoleSettings">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/utilities-system-monitor.png</normaloff>:/icons/utilities-system-monitor.png</iconset>
    </property>
    <property name="text">
@@ -210,7 +211,7 @@
   </action>
   <action name="actionPortSettings">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/input-gaming.png</normaloff>:/icons/input-gaming.png</iconset>
    </property>
    <property name="text">
@@ -219,7 +220,7 @@
   </action>
   <action name="actionHotkeySettings">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/applications-other.png</normaloff>:/icons/applications-other.png</iconset>
    </property>
    <property name="text">
@@ -228,7 +229,7 @@
   </action>
   <action name="actionGPUSettings">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/video-display.png</normaloff>:/icons/video-display.png</iconset>
    </property>
    <property name="text">
@@ -237,7 +238,7 @@
   </action>
   <action name="actionFullscreen">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/view-fullscreen.png</normaloff>:/icons/view-fullscreen.png</iconset>
    </property>
    <property name="text">
@@ -290,7 +291,7 @@
   </action>
   <action name="actionChangeDisc">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/media-optical.png</normaloff>:/icons/media-optical.png</iconset>
    </property>
    <property name="text">
@@ -299,7 +300,7 @@
   </action>
   <action name="actionAudioSettings">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/audio-card.png</normaloff>:/icons/audio-card.png</iconset>
    </property>
    <property name="text">
@@ -308,7 +309,7 @@
   </action>
   <action name="actionGameListSettings">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/folder-open.png</normaloff>:/icons/folder-open.png</iconset>
    </property>
    <property name="text">
@@ -317,7 +318,7 @@
   </action>
   <action name="actionOpenDirectory">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/edit-find.png</normaloff>:/icons/edit-find.png</iconset>
    </property>
    <property name="text">
@@ -326,7 +327,7 @@
   </action>
   <action name="actionSettings">
    <property name="icon">
-    <iconset resource="icons.qrc">
+    <iconset resource="resources/icons.qrc">
      <normaloff>:/icons/applications-system.png</normaloff>:/icons/applications-system.png</iconset>
    </property>
    <property name="text">
@@ -335,7 +336,7 @@
   </action>
  </widget>
  <resources>
-  <include location="icons.qrc"/>
+  <include location="resources/icons.qrc"/>
  </resources>
  <connections/>
 </ui>

src/duckstation-qt/qthostinterface.cpp

@@ -185,6 +185,13 @@ void QtHostInterface::onDisplayWindowResized(int width, int height)
   m_display_window->onWindowResized(width, height);
 }
 
+void QtHostInterface::OnPerformanceCountersUpdated()
+{
+  HostInterface::OnPerformanceCountersUpdated();
+
+  emit performanceCountersUpdated(m_speed, m_fps, m_vps, m_average_frame_time, m_worst_frame_time);
+}
+
 void QtHostInterface::updateInputMap()
 {
   if (!isOnWorkerThread())
@@ -508,8 +515,7 @@ void QtHostInterface::threadEntryPoint()
 
     // execute the system, polling events inbetween frames
     // simulate the system if not paused
-    if (m_system && !m_paused)
+    RunFrame();
-      m_system->RunFrame();
 
     // rendering
     {
@@ -519,7 +525,6 @@ void QtHostInterface::threadEntryPoint()
         m_system->GetGPU()->ResetGraphicsAPIState();
       }
 
-      DrawFPSWindow();
       DrawOSDMessages();
 
       m_display->Render();
@@ -531,8 +536,6 @@ void QtHostInterface::threadEntryPoint()
         if (m_speed_limiter_enabled)
           Throttle();
       }
-
-      UpdatePerformanceCounters();
     }
 
     m_worker_thread_event_loop->processEvents(QEventLoop::AllEvents);

src/duckstation-qt/qthostinterface.h

@@ -71,6 +71,7 @@ Q_SIGNALS:
   void gameListRefreshed();
   void toggleFullscreenRequested();
   void switchRendererRequested();
+  void performanceCountersUpdated(float speed, float fps, float vps, float avg_frame_time, float worst_frame_time);
 
 public Q_SLOTS:
   void powerOffSystem();
@@ -87,6 +88,9 @@ private Q_SLOTS:
   void doHandleKeyEvent(int key, bool pressed);
   void onDisplayWindowResized(int width, int height);
 
+protected:
+  void OnPerformanceCountersUpdated() override;
+
 private:
   using InputButtonHandler = std::function<void(bool)>;
 

src/duckstation/sdl_host_interface.cpp

@@ -1614,7 +1614,7 @@ void SDLHostInterface::Run()
 
     if (m_system && !m_paused)
     {
-      m_system->RunFrame();
+      RunFrame();
       if (m_frame_step_request)
       {
         m_frame_step_request = false;
@@ -1644,8 +1644,6 @@ void SDLHostInterface::Run()
           Throttle();
       }
     }
-
-    UpdatePerformanceCounters();
   }
 
   // Save state on exit so it can be resumed