GPU/HW: Add D3D11 renderer and refactor host interface/display

src/duckstation/sdl_host_interface.h

@@ -0,0 +1,126 @@
+#pragma once
+#include "YBaseLib/String.h"
+#include "YBaseLib/Timer.h"
+#include "common/gl/program.h"
+#include "common/gl/texture.h"
+#include "core/host_interface.h"
+#include "core/host_display.h"
+#include <SDL.h>
+#include <array>
+#include <deque>
+#include <map>
+#include <memory>
+#include <mutex>
+
+class System;
+class DigitalController;
+class MemoryCard;
+class AudioStream;
+
+class SDLHostInterface : public HostInterface
+{
+public:
+  SDLHostInterface();
+  ~SDLHostInterface();
+
+  static std::unique_ptr<SDLHostInterface> Create(const char* filename = nullptr, const char* exp1_filename = nullptr,
+                                              const char* save_state_filename = nullptr);
+
+  static TinyString GetSaveStateFilename(u32 index);
+
+  HostDisplay* GetDisplay() const override;
+
+  void ReportMessage(const char* message) override;
+
+  // Adds OSD messages, duration is in seconds.
+  void AddOSDMessage(const char* message, float duration = 2.0f) override;
+
+  void Run();
+
+private:
+  static constexpr u32 NUM_QUICK_SAVE_STATES = 10;
+  static constexpr char RESUME_SAVESTATE_FILENAME[] = "savestate_resume.bin";
+
+  struct OSDMessage
+  {
+    String text;
+    Timer time;
+    float duration;
+  };
+
+  bool HasSystem() const { return static_cast<bool>(m_system); }
+
+#ifdef Y_PLATFORM_WINDOWS
+  bool UseOpenGLRenderer() const { return m_settings.gpu_renderer == Settings::GPURenderer::HardwareOpenGL; }
+#else
+  bool UseOpenGLRenderer() const { return true; }
+#endif
+
+  bool CreateSDLWindow();
+  bool CreateDisplay();
+  bool CreateImGuiContext();
+  bool CreateAudioStream();
+  void UpdateAudioVisualSync();
+
+  void OpenGameControllers();
+  void CloseGameControllers();
+
+  bool InitializeSystem(const char* filename = nullptr, const char* exp1_filename = nullptr);
+  void ConnectDevices();
+  void ResetPerformanceCounters();
+  void ShutdownSystem();
+
+  // We only pass mouse input through if it's grabbed
+  bool IsWindowFullscreen() const;
+  void DrawImGui();
+  void DoReset();
+  void DoPowerOff();
+  void DoResume();
+  void DoStartDisc();
+  void DoStartBIOS();
+  void DoChangeDisc();
+  void DoLoadState(u32 index);
+  void DoSaveState(u32 index);
+  void DoTogglePause();
+  void DoFrameStep();
+  void DoToggleSoftwareRendering();
+  void DoModifyInternalResolution(s32 increment);
+
+  void HandleSDLEvent(const SDL_Event* event);
+  void HandleSDLKeyEvent(const SDL_Event* event);
+  void ClearImGuiFocus();
+
+  void DrawMainMenuBar();
+  void DrawPoweredOffWindow();
+  void DrawAboutWindow();
+  void DrawOSDMessages();
+  void DrawDebugMenu();
+  void DrawDebugWindows();
+
+  SDL_Window* m_window = nullptr;
+  std::unique_ptr<HostDisplay> m_display;
+  std::unique_ptr<HostDisplayTexture> m_app_icon_texture;
+
+  std::deque<OSDMessage> m_osd_messages;
+  std::mutex m_osd_messages_lock;
+
+  std::map<int, SDL_GameController*> m_sdl_controllers;
+
+  std::shared_ptr<DigitalController> m_controller;
+
+  float m_vps = 0.0f;
+  float m_fps = 0.0f;
+  float m_speed = 0.0f;
+  u32 m_last_frame_number = 0;
+  u32 m_last_internal_frame_number = 0;
+  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_about_window_open = false;
+  bool m_speed_limiter_enabled = true;
+  bool m_speed_limiter_temp_disabled = false;
+};