[UI] Image post-processing and full presentation/window rework

[GPU] Add FXAA post-processing
[UI] Add FidelityFX FSR and CAS post-processing
[UI] Add blue noise dithering from 10bpc to 8bpc
[GPU] Apply the DC PWL gamma ramp closer to the spec, supporting fully white color
[UI] Allow the GPU CP thread to present on the host directly, bypassing the UI thread OS paint event
[UI] Allow variable refresh rate (or tearing)
[UI] Present the newest frame (restart) on DXGI
[UI] Replace GraphicsContext with a far more advanced Presenter with more coherent surface connection and UI overlay state management
[UI] Connect presentation to windows via the Surface class, not native window handles
[Vulkan] Switch to simpler Vulkan setup with no instance/device separation due to interdependencies and to pass fewer objects around
[Vulkan] Lower the minimum required Vulkan version to 1.0
[UI/GPU] Various cleanup, mainly ComPtr usage
[UI] Support per-monitor DPI awareness v2 on Windows
[UI] DPI-scale Dear ImGui
[UI] Replace the remaining non-detachable window delegates with unified window event and input listeners
[UI] Allow listeners to safely destroy or close the window, and to register/unregister listeners without use-after-free and the ABA problem
[UI] Explicit Z ordering of input listeners and UI overlays, top-down for input, bottom-up for drawing
[UI] Add explicit window lifecycle phases
[UI] Replace Window virtual functions with explicit desired state, its application, actual state, its feedback
[UI] GTK: Apply the initial size to the drawing area
[UI] Limit internal UI frame rate to that of the monitor
[UI] Hide the cursor using a timer instead of polling due to no repeated UI thread paints with GPU CP thread presentation, and only within the window

src/xenia/hid/sdl/sdl_hid.cc

@@ -15,8 +15,9 @@ namespace xe {
 namespace hid {
 namespace sdl {
 
-std::unique_ptr<InputDriver> Create(xe::ui::Window* window) {
-  return std::make_unique<SDLInputDriver>(window);
+std::unique_ptr<InputDriver> Create(xe::ui::Window* window,
+                                    size_t window_z_order) {
+  return std::make_unique<SDLInputDriver>(window, window_z_order);
 }
 
 }  // namespace sdl

src/xenia/hid/sdl/sdl_hid.h

@@ -18,7 +18,8 @@ namespace xe {
 namespace hid {
 namespace sdl {
 
-std::unique_ptr<InputDriver> Create(xe::ui::Window* window);
+std::unique_ptr<InputDriver> Create(xe::ui::Window* window,
+                                    size_t window_z_order);
 
 }  // namespace sdl
 }  // namespace hid

src/xenia/hid/sdl/sdl_input_driver.cc

@@ -33,8 +33,8 @@ namespace xe {
 namespace hid {
 namespace sdl {
 
-SDLInputDriver::SDLInputDriver(xe::ui::Window* window)
-    : InputDriver(window),
+SDLInputDriver::SDLInputDriver(xe::ui::Window* window, size_t window_z_order)
+    : InputDriver(window, window_z_order),
       sdl_events_initialized_(false),
       sdl_gamecontroller_initialized_(false),
       sdl_events_unflushed_(0),

src/xenia/hid/sdl/sdl_input_driver.h

@@ -28,9 +28,9 @@ namespace xe {
 namespace hid {
 namespace sdl {
 
-class SDLInputDriver : public InputDriver {
+class SDLInputDriver final : public InputDriver {
  public:
-  explicit SDLInputDriver(xe::ui::Window* window);
+  explicit SDLInputDriver(xe::ui::Window* window, size_t window_z_order);
   ~SDLInputDriver() override;
 
   X_STATUS Setup() override;
@@ -42,7 +42,7 @@ class SDLInputDriver : public InputDriver {
   X_RESULT GetKeystroke(uint32_t user_index, uint32_t flags,
                         X_INPUT_KEYSTROKE* out_keystroke) override;
 
- protected:
+ private:
   struct ControllerState {
     SDL_GameController* sdl;
     X_INPUT_CAPABILITIES caps;
@@ -65,7 +65,6 @@ class SDLInputDriver : public InputDriver {
     uint32_t repeat_time;
   };
 
- protected:
   void HandleEvent(const SDL_Event& event);
   void OnControllerDeviceAdded(const SDL_Event& event);
   void OnControllerDeviceRemoved(const SDL_Event& event);
@@ -80,7 +79,6 @@ class SDLInputDriver : public InputDriver {
   void UpdateXCapabilities(ControllerState& state);
   void QueueControllerUpdate();
 
- protected:
   bool sdl_events_initialized_;
   bool sdl_gamecontroller_initialized_;
   int sdl_events_unflushed_;