System: Move settings to HostInterface

src/core/gpu_hw.cpp

@@ -19,7 +19,6 @@ bool GPU_HW::Initialize(HostDisplay* host_display, System* system, DMA* dma, Int
     return false;
 
   m_resolution_scale = std::clamp<u32>(m_system->GetSettings().gpu_resolution_scale, 1, m_max_resolution_scale);
-  m_system->GetSettings().gpu_resolution_scale = m_resolution_scale;
   m_system->GetSettings().max_gpu_resolution_scale = m_max_resolution_scale;
   m_true_color = m_system->GetSettings().gpu_true_color;
   return true;
@@ -53,7 +52,6 @@ void GPU_HW::UpdateSettings()
   GPU::UpdateSettings();
 
   m_resolution_scale = std::clamp<u32>(m_system->GetSettings().gpu_resolution_scale, 1, m_max_resolution_scale);
-  m_system->GetSettings().gpu_resolution_scale = m_resolution_scale;
   m_true_color = m_system->GetSettings().gpu_true_color;
 }
 

src/core/host_interface.cpp

@@ -2,19 +2,20 @@
 #include "YBaseLib/ByteStream.h"
 #include "YBaseLib/Log.h"
 #include "common/audio_stream.h"
+#include "host_display.h"
 #include "system.h"
 Log_SetChannel(HostInterface);
 
 HostInterface::HostInterface()
 {
-  m_settings.Load("settings.ini");
+  m_settings.SetDefaults();
 }
 
 HostInterface::~HostInterface() = default;
 
 bool HostInterface::InitializeSystem(const char* filename, const char* exp1_filename)
 {
-  m_system = std::make_unique<System>(this, m_settings);
+  m_system = std::make_unique<System>(this);
   if (!m_system->Initialize())
   {
     m_system.reset();
@@ -54,6 +55,13 @@ bool HostInterface::InitializeSystem(const char* filename, const char* exp1_file
   return true;
 }
 
+void HostInterface::ShutdownSystem()
+{
+  m_system.reset();
+  m_paused = false;
+  UpdateAudioVisualSync();
+}
+
 bool HostInterface::LoadState(const char* filename)
 {
   ByteStream* stream;
@@ -99,3 +107,15 @@ bool HostInterface::SaveState(const char* filename)
   stream->Release();
   return result;
 }
+
+void HostInterface::UpdateAudioVisualSync()
+{
+  const bool speed_limiter_enabled = m_settings.speed_limiter_enabled && !m_speed_limiter_temp_disabled;
+  const bool audio_sync_enabled = speed_limiter_enabled;
+  const bool vsync_enabled = !m_system || (speed_limiter_enabled && m_settings.gpu_vsync);
+  Log_InfoPrintf("Syncing to %s%s", audio_sync_enabled ? "audio" : "",
+                 (speed_limiter_enabled && vsync_enabled) ? " and video" : "");
+
+  m_audio_stream->SetSync(false);
+  m_display->SetVSync(vsync_enabled);
+}

src/core/host_interface.h

@@ -14,11 +14,19 @@ public:
   HostInterface();
   virtual ~HostInterface();
 
+  /// Access to host display.
+  ALWAYS_INLINE HostDisplay* GetDisplay() const { return m_display.get(); }
+
+  /// Access to host audio stream.
   AudioStream* GetAudioStream() const { return m_audio_stream.get(); }
 
-  bool InitializeSystem(const char* filename, const char* exp1_filename);
+  /// Returns a settings object which can be modified.
+  Settings& GetSettings() { return m_settings; }
+
+
+  bool InitializeSystem(const char* filename, const char* exp1_filename);
+  void ShutdownSystem();
 
-  virtual HostDisplay* GetDisplay() const = 0;
 
   virtual void ReportMessage(const char* message) = 0;
 
@@ -29,8 +37,13 @@ public:
   bool SaveState(const char* filename);
 
 protected:
+  void UpdateAudioVisualSync();
+
+  std::unique_ptr<HostDisplay> m_display;
   std::unique_ptr<AudioStream> m_audio_stream;
   std::unique_ptr<System> m_system;
-
   Settings m_settings;
+
+  bool m_paused = false;
+  bool m_speed_limiter_temp_disabled = false;
 };

src/core/settings.cpp

@@ -78,7 +78,13 @@ bool Settings::Save(const char* filename) const
     ini.DeleteValue("MemoryCard", "CardBPath", nullptr);
 
   err = ini.SaveFile(filename, false);
-  return (err == SI_OK);
+  if (err != SI_OK)
+  {
+    Log_WarningPrintf("Failed to save settings to '%s'.", filename);
+    return false;
+  }
+
+  return true;
 }
 
 static std::array<const char*, 3> s_gpu_renderer_names = {{"D3D11", "OpenGL", "Software"}};

src/core/settings.h

@@ -19,7 +19,7 @@ struct Settings
 
   GPURenderer gpu_renderer = GPURenderer::Software;
   u32 gpu_resolution_scale = 1;
-  u32 max_gpu_resolution_scale = 1;
+  mutable u32 max_gpu_resolution_scale = 1;
   bool gpu_vsync = true;
   bool gpu_true_color = false;
   bool display_linear_filtering = true;
@@ -27,15 +27,16 @@ struct Settings
 
   struct DebugSettings
   {
-    bool show_gpu_state = false;
     bool show_vram = false;
     bool dump_cpu_to_vram_copies = false;
     bool dump_vram_to_cpu_copies = false;
 
-    bool show_cdrom_state = false;
+    // Mutable because the imgui window can close itself.
-    bool show_spu_state = false;
+    mutable bool show_gpu_state = false;
-    bool show_timers_state = false;
+    mutable bool show_cdrom_state = false;
-    bool show_mdec_state = false;
+    mutable bool show_spu_state = false;
+    mutable bool show_timers_state = false;
+    mutable bool show_mdec_state = false;
   } debugging;
 
   // TODO: Controllers, memory cards, etc.

src/core/system.cpp

@@ -19,8 +19,8 @@
 #include <imgui.h>
 Log_SetChannel(System);
 
-System::System(HostInterface* host_interface, const Settings& settings)
+System::System(HostInterface* host_interface)
-  : m_host_interface(host_interface), m_settings(settings)
+  : m_host_interface(host_interface)
 {
   m_cpu = std::make_unique<CPU::Core>();
   m_bus = std::make_unique<Bus>();
@@ -107,7 +107,7 @@ bool System::Initialize()
 
 bool System::CreateGPU()
 {
-  switch (m_settings.gpu_renderer)
+  switch (m_host_interface->GetSettings().gpu_renderer)
   {
     case Settings::GPURenderer::HardwareOpenGL:
       m_gpu = GPU::CreateHardwareOpenGLRenderer();
@@ -130,7 +130,7 @@ bool System::CreateGPU()
   {
     Log_ErrorPrintf("Failed to initialize GPU, falling back to software");
     m_gpu.reset();
-    m_settings.gpu_renderer = Settings::GPURenderer::Software;
+    m_host_interface->GetSettings().gpu_renderer = Settings::GPURenderer::Software;
     m_gpu = GPU::CreateSoftwareRenderer();
     if (!m_gpu->Initialize(m_host_interface->GetDisplay(), this, m_dma.get(), m_interrupt_controller.get(),
                            m_timers.get()))
@@ -376,16 +376,17 @@ void System::UpdateMemoryCards()
   m_pad->SetMemoryCard(0, nullptr);
   m_pad->SetMemoryCard(1, nullptr);
 
-  if (!m_settings.memory_card_a_path.empty())
+  const Settings& settings = m_host_interface->GetSettings();
+  if (!settings.memory_card_a_path.empty())
   {
-    std::shared_ptr<MemoryCard> card = MemoryCard::Open(this, m_settings.memory_card_a_path);
+    std::shared_ptr<MemoryCard> card = MemoryCard::Open(this, settings.memory_card_a_path);
     if (card)
       m_pad->SetMemoryCard(0, std::move(card));
   }
 
-  if (!m_settings.memory_card_b_path.empty())
+  if (!settings.memory_card_b_path.empty())
   {
-    std::shared_ptr<MemoryCard> card = MemoryCard::Open(this, m_settings.memory_card_b_path);
+    std::shared_ptr<MemoryCard> card = MemoryCard::Open(this, settings.memory_card_b_path);
     if (card)
       m_pad->SetMemoryCard(1, std::move(card));
   }

src/core/system.h

@@ -1,13 +1,11 @@
 #pragma once
-#include "settings.h"
 #include "types.h"
+#include "host_interface.h"
 #include <memory>
 
 class ByteStream;
 class StateWrapper;
 
-class HostInterface;
-
 namespace CPU {
 class Core;
 }
@@ -26,7 +24,7 @@ class MDEC;
 class System
 {
 public:
-  System(HostInterface* host_interface, const Settings& settings);
+  System(HostInterface* host_interface);
   ~System();
 
   // Accessing components.
@@ -48,7 +46,7 @@ public:
   void IncrementFrameNumber() { m_frame_number++; }
   void IncrementInternalFrameNumber() { m_internal_frame_number++; }
 
-  Settings& GetSettings() { return m_settings; }
+  const Settings& GetSettings() { return m_host_interface->GetSettings(); }
 
   bool Initialize();
   void Reset();
@@ -95,6 +93,4 @@ private:
   u32 m_frame_number = 1;
   u32 m_internal_frame_number = 1;
   u32 m_global_tick_counter = 0;
-
-  Settings m_settings;
 };

src/duckstation/imgui_styles.cpp

@@ -62,5 +62,5 @@ void ImGui::StyleColorsDarker(ImGuiStyle* dst)
 void ImGui::AddRobotoRegularFont(float size /*= 15.0f*/)
 {
   ImGui::GetIO().Fonts->AddFontFromMemoryCompressedTTF(s_font_roboto_regular_compressed_data,
-                                                       s_font_roboto_regular_compressed_size, 15.0f);
+                                                       s_font_roboto_regular_compressed_size, size);
 }

src/duckstation/sdl_host_interface.cpp

@@ -26,7 +26,7 @@
 #include <nfd.h>
 Log_SetChannel(SDLHostInterface);
 
-SDLHostInterface::SDLHostInterface() = default;
+SDLHostInterface::SDLHostInterface() : m_settings_filename("settings.ini") {}
 
 SDLHostInterface::~SDLHostInterface()
 {
@@ -85,7 +85,7 @@ bool SDLHostInterface::CreateDisplay()
   return true;
 }
 
-bool SDLHostInterface::CreateImGuiContext()
+void SDLHostInterface::CreateImGuiContext()
 {
   ImGui::CreateContext();
   ImGui::GetIO().IniFilename = nullptr;
@@ -94,32 +94,12 @@ bool SDLHostInterface::CreateImGuiContext()
 
   ImGui::StyleColorsDarker();
   ImGui::AddRobotoRegularFont();
-  return true;
 }
 
 bool SDLHostInterface::CreateAudioStream()
 {
   m_audio_stream = std::make_unique<SDLAudioStream>();
-  if (!m_audio_stream->Reconfigure(44100, 2))
+  return m_audio_stream->Reconfigure(44100, 2);
-  {
-    Panic("Failed to open audio stream");
-    return false;
-  }
-
-  return true;
-}
-
-void SDLHostInterface::UpdateAudioVisualSync()
-{
-  const bool speed_limiter_enabled =
-    !m_system || (m_system->GetSettings().speed_limiter_enabled && !m_speed_limiter_temp_disabled);
-  const bool audio_sync_enabled = speed_limiter_enabled;
-  const bool vsync_enabled = !m_system || (speed_limiter_enabled && m_system->GetSettings().gpu_vsync);
-  Log_InfoPrintf("Syncing to %s%s", audio_sync_enabled ? "audio" : "",
-                 (speed_limiter_enabled && vsync_enabled) ? " and video" : "");
-
-  m_audio_stream->SetSync(false);
-  m_display->SetVSync(vsync_enabled);
 }
 
 void SDLHostInterface::OpenGameControllers()
@@ -146,6 +126,11 @@ void SDLHostInterface::CloseGameControllers()
   m_sdl_controllers.clear();
 }
 
+void SDLHostInterface::SaveSettings()
+{
+  m_settings.Save(m_settings_filename.c_str());
+}
+
 bool SDLHostInterface::InitializeSystem(const char* filename, const char* exp1_filename)
 {
   if (!HostInterface::InitializeSystem(filename, exp1_filename))
@@ -185,20 +170,33 @@ void SDLHostInterface::ResetPerformanceCounters()
 
 void SDLHostInterface::SwitchGPURenderer() {}
 
-void SDLHostInterface::ShutdownSystem()
-{
-  m_system.reset();
-  m_paused = false;
-  UpdateAudioVisualSync();
-}
-
 std::unique_ptr<SDLHostInterface> SDLHostInterface::Create(const char* filename /* = nullptr */,
                                                            const char* exp1_filename /* = nullptr */,
                                                            const char* save_state_filename /* = nullptr */)
 {
   std::unique_ptr<SDLHostInterface> intf = std::make_unique<SDLHostInterface>();
-  if (!intf->CreateSDLWindow() || !intf->CreateImGuiContext() || !intf->CreateDisplay() || !intf->CreateAudioStream())
+
+  // Settings need to be loaded prior to creating the window for OpenGL bits.
+  intf->m_settings.Load(intf->m_settings_filename.c_str());
+
+  if (!intf->CreateSDLWindow())
+  {
+    Log_ErrorPrintf("Failed to create SDL window");
     return nullptr;
+  }
+
+  intf->CreateImGuiContext();
+  if (!intf->CreateDisplay())
+  {
+    Log_ErrorPrintf("Failed to create host display");
+    return nullptr;
+  }
+
+  if (!intf->CreateAudioStream())
+  {
+    Log_ErrorPrintf("Failed to create host audio stream");
+    return nullptr;
+  }
 
   ImGui::NewFrame();
 
@@ -224,11 +222,6 @@ TinyString SDLHostInterface::GetSaveStateFilename(u32 index)
   return TinyString::FromFormat("savestate_%u.bin", index);
 }
 
-HostDisplay* SDLHostInterface::GetDisplay() const
-{
-  return m_display.get();
-}
-
 void SDLHostInterface::ReportMessage(const char* message)
 {
   AddOSDMessage(message, 3.0f);
@@ -521,7 +514,7 @@ void SDLHostInterface::HandleSDLKeyEvent(const SDL_Event* event)
     {
       if (pressed && !repeat && m_system)
       {
-        m_system->GetSettings().speed_limiter_enabled = !m_system->GetSettings().speed_limiter_enabled;
+        m_settings.speed_limiter_enabled = !m_settings.speed_limiter_enabled;
         UpdateAudioVisualSync();
         AddOSDMessage(m_system->GetSettings().speed_limiter_enabled ? "Speed limiter enabled." :
                                                                       "Speed limiter disabled.");
@@ -644,74 +637,20 @@ void SDLHostInterface::DrawMainMenuBar()
 
   if (ImGui::BeginMenu("Settings"))
   {
-    Settings& settings = m_system ? m_system->GetSettings() : m_settings;
+    if (ImGui::MenuItem("Change Settings..."))
-    if (ImGui::MenuItem("Enable Speed Limiter", nullptr, &settings.speed_limiter_enabled, system_enabled))
+      m_settings_window_open = true;
-    {
-      UpdateAudioVisualSync();
-    }
 
     ImGui::Separator();
 
-    if (ImGui::MenuItem("Fullscreen", nullptr, IsWindowFullscreen()))
+    DrawQuickSettingsMenu();
-      SDL_SetWindowFullscreen(m_window, IsWindowFullscreen() ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
-
-    ImGui::Separator();
-
-    if (ImGui::BeginMenu("GPU", system_enabled))
-    {
-      if (ImGui::BeginMenu("Renderer"))
-      {
-        const Settings::GPURenderer current = m_system->GetSettings().gpu_renderer;
-        for (u32 i = 0; i < static_cast<u32>(Settings::GPURenderer::Count); i++)
-        {
-          if (ImGui::MenuItem(Settings::GetRendererDisplayName(static_cast<Settings::GPURenderer>(i)), nullptr,
-                              i == static_cast<u32>(current)))
-          {
-            m_system->GetSettings().gpu_renderer = static_cast<Settings::GPURenderer>(i);
-            m_system->RecreateGPU();
-          }
-        }
-
     ImGui::EndMenu();
   }
 
-      if (ImGui::BeginMenu("Internal Resolution"))
+  if (ImGui::BeginMenu("Debug", system_enabled))
   {
-        const u32 current_internal_resolution = m_system->GetSettings().gpu_resolution_scale;
-        for (u32 scale = 1; scale <= m_system->GetSettings().max_gpu_resolution_scale; scale++)
-        {
-          if (ImGui::MenuItem(
-                TinyString::FromFormat("%ux (%ux%u)", scale, scale * GPU::VRAM_WIDTH, scale * GPU::VRAM_HEIGHT),
-                nullptr, current_internal_resolution == scale))
-          {
-            m_system->GetSettings().gpu_resolution_scale = scale;
-            m_system->GetGPU()->UpdateSettings();
-          }
-        }
-
-        ImGui::EndMenu();
-      }
-
-      if (ImGui::MenuItem("VSync", nullptr, &m_system->GetSettings().gpu_vsync))
-        UpdateAudioVisualSync();
-
-      if (ImGui::MenuItem("True (24-Bit) Color", nullptr, &m_system->GetSettings().gpu_true_color))
-        m_system->GetGPU()->UpdateSettings();
-
-      if (ImGui::MenuItem("Display Linear Filtering", nullptr, &m_system->GetSettings().display_linear_filtering))
-      {
-        // this has to update the display texture for now..
-        m_system->GetGPU()->UpdateSettings();
-      }
-
-      ImGui::EndMenu();
-    }
-
-    ImGui::EndMenu();
-  }
-
-  if (m_system)
     DrawDebugMenu();
+    ImGui::EndMenu();
+  }
 
   if (ImGui::BeginMenu("Help"))
   {
@@ -759,6 +698,100 @@ void SDLHostInterface::DrawMainMenuBar()
   ImGui::EndMainMenuBar();
 }
 
+void SDLHostInterface::DrawQuickSettingsMenu()
+{
+  bool settings_changed = false;
+  bool gpu_settings_changed = false;
+  if (ImGui::MenuItem("Enable Speed Limiter", nullptr, &m_settings.speed_limiter_enabled))
+  {
+    settings_changed = true;
+    UpdateAudioVisualSync();
+  }
+
+  ImGui::Separator();
+
+  if (ImGui::BeginMenu("Renderer"))
+  {
+    const Settings::GPURenderer current = m_settings.gpu_renderer;
+    for (u32 i = 0; i < static_cast<u32>(Settings::GPURenderer::Count); i++)
+    {
+      if (ImGui::MenuItem(Settings::GetRendererDisplayName(static_cast<Settings::GPURenderer>(i)), nullptr,
+                          i == static_cast<u32>(current)))
+      {
+        m_settings.gpu_renderer = static_cast<Settings::GPURenderer>(i);
+        settings_changed = true;
+        if (m_system)
+          SwitchGPURenderer();
+      }
+    }
+
+    ImGui::EndMenu();
+  }
+
+  if (ImGui::MenuItem("Fullscreen", nullptr, IsWindowFullscreen()))
+    SDL_SetWindowFullscreen(m_window, IsWindowFullscreen() ? 0 : SDL_WINDOW_FULLSCREEN_DESKTOP);
+
+  if (ImGui::MenuItem("VSync", nullptr, &m_settings.gpu_vsync))
+  {
+    settings_changed = true;
+    UpdateAudioVisualSync();
+  }
+
+  ImGui::Separator();
+
+  if (ImGui::BeginMenu("Resolution Scale"))
+  {
+    const u32 current_internal_resolution = m_settings.gpu_resolution_scale;
+    for (u32 scale = 1; scale <= m_settings.max_gpu_resolution_scale; scale++)
+    {
+      if (ImGui::MenuItem(
+            TinyString::FromFormat("%ux (%ux%u)", scale, scale * GPU::VRAM_WIDTH, scale * GPU::VRAM_HEIGHT), nullptr,
+            current_internal_resolution == scale))
+      {
+        m_settings.gpu_resolution_scale = scale;
+        gpu_settings_changed = true;
+      }
+    }
+
+    ImGui::EndMenu();
+  }
+
+  gpu_settings_changed |= ImGui::MenuItem("True (24-Bit) Color", nullptr, &m_settings.gpu_true_color);
+  settings_changed |= ImGui::MenuItem("Display Linear Filtering", nullptr, &m_settings.display_linear_filtering);
+
+  if (settings_changed || gpu_settings_changed)
+    SaveSettings();
+
+  if (gpu_settings_changed && m_system)
+    m_system->GetGPU()->UpdateSettings();
+}
+
+void SDLHostInterface::DrawDebugMenu()
+{
+  Settings::DebugSettings& debug_settings = m_settings.debugging;
+
+  ImGui::MenuItem("Show System State");
+  ImGui::Separator();
+
+  ImGui::MenuItem("Show GPU State", nullptr, &debug_settings.show_gpu_state);
+  ImGui::MenuItem("Show VRAM", nullptr, &debug_settings.show_vram);
+  ImGui::MenuItem("Dump CPU to VRAM Copies", nullptr, &debug_settings.dump_cpu_to_vram_copies);
+  ImGui::MenuItem("Dump VRAM to CPU Copies", nullptr, &debug_settings.dump_vram_to_cpu_copies);
+  ImGui::Separator();
+
+  ImGui::MenuItem("Show CDROM State", nullptr, &debug_settings.show_cdrom_state);
+  ImGui::Separator();
+
+  ImGui::MenuItem("Show SPU State", nullptr, &debug_settings.show_spu_state);
+  ImGui::Separator();
+
+  ImGui::MenuItem("Show Timers State", nullptr, &debug_settings.show_timers_state);
+  ImGui::Separator();
+
+  ImGui::MenuItem("Show MDEC State", nullptr, &debug_settings.show_mdec_state);
+  ImGui::Separator();
+}
+
 void SDLHostInterface::DrawPoweredOffWindow()
 {
   constexpr int WINDOW_WIDTH = 400;
@@ -854,7 +887,6 @@ void SDLHostInterface::DrawSettingsWindow()
     return;
   }
 
-  Settings& settings = m_system ? m_system->GetSettings() : m_settings;
   bool settings_changed = false;
   bool gpu_settings_changed = false;
 
@@ -871,11 +903,11 @@ void SDLHostInterface::DrawSettingsWindow()
 
       ImGui::Text("BIOS Path:");
       ImGui::SameLine(indent);
-      DrawFileChooser("##bios_path", &settings.bios_path);
+      DrawFileChooser("##bios_path", &m_settings.bios_path);
 
-      ImGui::Checkbox("Enable Speed Limiter", &settings.speed_limiter_enabled);
+      ImGui::Checkbox("Enable Speed Limiter", &m_settings.speed_limiter_enabled);
 
-      ImGui::Checkbox("Pause On Start", &settings.start_paused);
+      ImGui::Checkbox("Pause On Start", &m_settings.start_paused);
 
       ImGui::EndTabItem();
     }
@@ -892,7 +924,7 @@ void SDLHostInterface::DrawSettingsWindow()
         ImGui::Text("Path:");
         ImGui::SameLine(indent);
 
-        std::string* path_ptr = (i == 0) ? &settings.memory_card_a_path : &settings.memory_card_b_path;
+        std::string* path_ptr = (i == 0) ? &m_settings.memory_card_a_path : &m_settings.memory_card_b_path;
         if (DrawFileChooser(TinyString::FromFormat("##memcard_%c_path", 'a' + i), path_ptr))
         {
           settings_changed = true;
@@ -921,7 +953,7 @@ void SDLHostInterface::DrawSettingsWindow()
         ImGui::Text("Renderer:");
         ImGui::SameLine(indent);
 
-        int gpu_renderer = static_cast<int>(settings.gpu_renderer);
+        int gpu_renderer = static_cast<int>(m_settings.gpu_renderer);
         if (ImGui::Combo(
               "##gpu_renderer", &gpu_renderer,
               [](void*, int index, const char** out_text) {
@@ -930,7 +962,7 @@ void SDLHostInterface::DrawSettingsWindow()
               },
               nullptr, static_cast<int>(Settings::GPURenderer::Count)))
         {
-          settings.gpu_renderer = static_cast<Settings::GPURenderer>(gpu_renderer);
+          m_settings.gpu_renderer = static_cast<Settings::GPURenderer>(gpu_renderer);
           SwitchGPURenderer();
         }
       }
@@ -939,10 +971,10 @@ void SDLHostInterface::DrawSettingsWindow()
 
       if (DrawSettingsSectionHeader("Display Output"))
       {
-        ImGui::Checkbox("Fullscreen", &settings.display_fullscreen);
+        ImGui::Checkbox("Fullscreen", &m_settings.display_fullscreen);
-        if (ImGui::Checkbox("VSync", &settings.gpu_vsync))
+        if (ImGui::Checkbox("VSync", &m_settings.gpu_vsync))
           UpdateAudioVisualSync();
-        ImGui::Checkbox("Linear Filtering", &settings.display_linear_filtering);
+        ImGui::Checkbox("Linear Filtering", &m_settings.display_linear_filtering);
       }
 
       ImGui::NewLine();
@@ -971,15 +1003,15 @@ void SDLHostInterface::DrawSettingsWindow()
           "16x (16384x8192)",
         }};
 
-        int current_resolution_index = static_cast<int>(settings.gpu_resolution_scale) - 1;
+        int current_resolution_index = static_cast<int>(m_settings.gpu_resolution_scale) - 1;
         if (ImGui::Combo("##gpu_resolution_scale", &current_resolution_index, resolutions.data(),
                          static_cast<int>(resolutions.size())))
         {
-          settings.gpu_resolution_scale = static_cast<u32>(current_resolution_index + 1);
+          m_settings.gpu_resolution_scale = static_cast<u32>(current_resolution_index + 1);
           gpu_settings_changed = true;
         }
 
-        ImGui::Checkbox("True 24-bit Color (disables dithering)", &settings.gpu_true_color);
+        ImGui::Checkbox("True 24-bit Color (disables dithering)", &m_settings.gpu_true_color);
       }
 
       ImGui::EndTabItem();
@@ -1034,37 +1066,6 @@ void SDLHostInterface::DrawAboutWindow()
   ImGui::EndPopup();
 }
 
-void SDLHostInterface::DrawDebugMenu()
-{
-  if (!ImGui::BeginMenu("Debug", m_system != nullptr))
-    return;
-
-  Settings::DebugSettings& debug_settings = m_system->GetSettings().debugging;
-
-  ImGui::MenuItem("Show System State");
-  ImGui::Separator();
-
-  ImGui::MenuItem("Show GPU State", nullptr, &debug_settings.show_gpu_state);
-  ImGui::MenuItem("Show VRAM", nullptr, &debug_settings.show_vram);
-  ImGui::MenuItem("Dump CPU to VRAM Copies", nullptr, &debug_settings.dump_cpu_to_vram_copies);
-  ImGui::MenuItem("Dump VRAM to CPU Copies", nullptr, &debug_settings.dump_vram_to_cpu_copies);
-  ImGui::Separator();
-
-  ImGui::MenuItem("Show CDROM State", nullptr, &debug_settings.show_cdrom_state);
-  ImGui::Separator();
-
-  ImGui::MenuItem("Show SPU State", nullptr, &debug_settings.show_spu_state);
-  ImGui::Separator();
-
-  ImGui::MenuItem("Show Timers State", nullptr, &debug_settings.show_timers_state);
-  ImGui::Separator();
-
-  ImGui::MenuItem("Show MDEC State", nullptr, &debug_settings.show_mdec_state);
-  ImGui::Separator();
-
-  ImGui::EndMenu();
-}
-
 void SDLHostInterface::DrawDebugWindows()
 {
   const Settings::DebugSettings& debug_settings = m_system->GetSettings().debugging;
@@ -1270,15 +1271,14 @@ void SDLHostInterface::DoToggleSoftwareRendering()
   if (!m_system)
     return;
 
-  auto& settings = m_system->GetSettings();
+  if (m_settings.gpu_renderer != Settings::GPURenderer::Software)
-  if (settings.gpu_renderer != Settings::GPURenderer::Software)
   {
-    settings.gpu_renderer = Settings::GPURenderer::Software;
+    m_settings.gpu_renderer = Settings::GPURenderer::Software;
     AddOSDMessage("Switched to software GPU renderer.");
   }
   else
   {
-    settings.gpu_renderer = m_display->GetRenderAPI() == HostDisplay::RenderAPI::D3D11 ?
+    m_settings.gpu_renderer = m_display->GetRenderAPI() == HostDisplay::RenderAPI::D3D11 ?
                                 Settings::GPURenderer::HardwareD3D11 :
                                 Settings::GPURenderer::HardwareOpenGL;
     AddOSDMessage("Switched to hardware GPU renderer.");
@@ -1289,22 +1289,19 @@ void SDLHostInterface::DoToggleSoftwareRendering()
 
 void SDLHostInterface::DoModifyInternalResolution(s32 increment)
 {
-  if (!m_system)
-    return;
-
-  auto& settings = m_system->GetSettings();
   const u32 new_resolution_scale =
-    std::clamp<u32>(static_cast<u32>(static_cast<s32>(settings.gpu_resolution_scale) + increment), 1,
+    std::clamp<u32>(static_cast<u32>(static_cast<s32>(m_settings.gpu_resolution_scale) + increment), 1,
-                    settings.max_gpu_resolution_scale);
+                    m_settings.max_gpu_resolution_scale);
-  if (new_resolution_scale == settings.gpu_resolution_scale)
+  if (new_resolution_scale == m_settings.gpu_resolution_scale)
     return;
 
-  settings.gpu_resolution_scale = new_resolution_scale;
+  m_settings.gpu_resolution_scale = new_resolution_scale;
+  if (m_system)
     m_system->GetGPU()->UpdateSettings();
 
-  AddOSDMessage(TinyString::FromFormat("Resolution scale set to %ux (%ux%u)", settings.gpu_resolution_scale,
+  AddOSDMessage(TinyString::FromFormat("Resolution scale set to %ux (%ux%u)", m_settings.gpu_resolution_scale,
-                                       GPU::VRAM_WIDTH * settings.gpu_resolution_scale,
+                                       GPU::VRAM_WIDTH * m_settings.gpu_resolution_scale,
-                                       GPU::VRAM_HEIGHT * settings.gpu_resolution_scale));
+                                       GPU::VRAM_HEIGHT * m_settings.gpu_resolution_scale));
 }
 
 void SDLHostInterface::Run()

src/duckstation/sdl_host_interface.h

@@ -28,8 +28,6 @@ public:
 
   static TinyString GetSaveStateFilename(u32 index);
 
-  HostDisplay* GetDisplay() const override;
-
   void ReportMessage(const char* message) override;
 
   // Adds OSD messages, duration is in seconds.
@@ -58,18 +56,18 @@ private:
 
   bool CreateSDLWindow();
   bool CreateDisplay();
-  bool CreateImGuiContext();
+  void CreateImGuiContext();
   bool CreateAudioStream();
-  void UpdateAudioVisualSync();
 
   void OpenGameControllers();
   void CloseGameControllers();
 
+  void SaveSettings();
+
   bool InitializeSystem(const char* filename = nullptr, const char* exp1_filename = nullptr);
   void ConnectDevices();
   void ResetPerformanceCounters();
   void SwitchGPURenderer();
-  void ShutdownSystem();
 
   // We only pass mouse input through if it's grabbed
   bool IsWindowFullscreen() const;
@@ -92,18 +90,20 @@ private:
   void ClearImGuiFocus();
 
   void DrawMainMenuBar();
+  void DrawQuickSettingsMenu();
+  void DrawDebugMenu();
   void DrawPoweredOffWindow();
   void DrawSettingsWindow();
   void DrawAboutWindow();
   void DrawOSDMessages();
-  void DrawDebugMenu();
   void DrawDebugWindows();
   bool DrawFileChooser(const char* label, std::string* path, const char* filter = nullptr);
 
   SDL_Window* m_window = nullptr;
-  std::unique_ptr<HostDisplay> m_display;
   std::unique_ptr<HostDisplayTexture> m_app_icon_texture;
 
+  std::string m_settings_filename;
+
   std::deque<OSDMessage> m_osd_messages;
   std::mutex m_osd_messages_lock;
 
@@ -119,11 +119,9 @@ private:
   u32 m_last_global_tick_counter = 0;
   Timer m_fps_timer;
 
-  bool m_paused = false;
   bool m_quit_request = false;
   bool m_frame_step_request = false;
   bool m_focus_main_menu_bar = false;
   bool m_settings_window_open = false;
   bool m_about_window_open = false;
-  bool m_speed_limiter_temp_disabled = false;
 };