chore: update project branding to citron

src/citron_cmd/emu_window/emu_window_sdl2.cpp

@@ -0,0 +1,254 @@
+// SPDX-FileCopyrightText: 2016 Citra Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <SDL.h>
+
+#include "common/logging/log.h"
+#include "common/scm_rev.h"
+#include "common/settings.h"
+#include "core/core.h"
+#include "core/perf_stats.h"
+#include "hid_core/hid_core.h"
+#include "input_common/drivers/keyboard.h"
+#include "input_common/drivers/mouse.h"
+#include "input_common/drivers/touch_screen.h"
+#include "input_common/main.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2.h"
+#include "yuzu_cmd/yuzu_icon.h"
+
+EmuWindow_SDL2::EmuWindow_SDL2(InputCommon::InputSubsystem* input_subsystem_, Core::System& system_)
+    : input_subsystem{input_subsystem_}, system{system_} {
+    input_subsystem->Initialize();
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER) < 0) {
+        LOG_CRITICAL(Frontend, "Failed to initialize SDL2: {}, Exiting...", SDL_GetError());
+        exit(1);
+    }
+    SDL_SetMainReady();
+}
+
+EmuWindow_SDL2::~EmuWindow_SDL2() {
+    system.HIDCore().UnloadInputDevices();
+    input_subsystem->Shutdown();
+    SDL_Quit();
+}
+
+InputCommon::MouseButton EmuWindow_SDL2::SDLButtonToMouseButton(u32 button) const {
+    switch (button) {
+    case SDL_BUTTON_LEFT:
+        return InputCommon::MouseButton::Left;
+    case SDL_BUTTON_RIGHT:
+        return InputCommon::MouseButton::Right;
+    case SDL_BUTTON_MIDDLE:
+        return InputCommon::MouseButton::Wheel;
+    case SDL_BUTTON_X1:
+        return InputCommon::MouseButton::Backward;
+    case SDL_BUTTON_X2:
+        return InputCommon::MouseButton::Forward;
+    default:
+        return InputCommon::MouseButton::Undefined;
+    }
+}
+
+std::pair<float, float> EmuWindow_SDL2::MouseToTouchPos(s32 touch_x, s32 touch_y) const {
+    int w, h;
+    SDL_GetWindowSize(render_window, &w, &h);
+    const float fx = static_cast<float>(touch_x) / w;
+    const float fy = static_cast<float>(touch_y) / h;
+
+    return {std::clamp<float>(fx, 0.0f, 1.0f), std::clamp<float>(fy, 0.0f, 1.0f)};
+}
+
+void EmuWindow_SDL2::OnMouseButton(u32 button, u8 state, s32 x, s32 y) {
+    const auto mouse_button = SDLButtonToMouseButton(button);
+    if (state == SDL_PRESSED) {
+        const auto [touch_x, touch_y] = MouseToTouchPos(x, y);
+        input_subsystem->GetMouse()->PressButton(x, y, mouse_button);
+        input_subsystem->GetMouse()->PressMouseButton(mouse_button);
+        input_subsystem->GetMouse()->PressTouchButton(touch_x, touch_y, mouse_button);
+    } else {
+        input_subsystem->GetMouse()->ReleaseButton(mouse_button);
+    }
+}
+
+void EmuWindow_SDL2::OnMouseMotion(s32 x, s32 y) {
+    const auto [touch_x, touch_y] = MouseToTouchPos(x, y);
+    input_subsystem->GetMouse()->Move(x, y, 0, 0);
+    input_subsystem->GetMouse()->MouseMove(touch_x, touch_y);
+    input_subsystem->GetMouse()->TouchMove(touch_x, touch_y);
+}
+
+void EmuWindow_SDL2::OnFingerDown(float x, float y, std::size_t id) {
+    input_subsystem->GetTouchScreen()->TouchPressed(x, y, id);
+}
+
+void EmuWindow_SDL2::OnFingerMotion(float x, float y, std::size_t id) {
+    input_subsystem->GetTouchScreen()->TouchMoved(x, y, id);
+}
+
+void EmuWindow_SDL2::OnFingerUp() {
+    input_subsystem->GetTouchScreen()->ReleaseAllTouch();
+}
+
+void EmuWindow_SDL2::OnKeyEvent(int key, u8 state) {
+    if (state == SDL_PRESSED) {
+        input_subsystem->GetKeyboard()->PressKey(static_cast<std::size_t>(key));
+    } else if (state == SDL_RELEASED) {
+        input_subsystem->GetKeyboard()->ReleaseKey(static_cast<std::size_t>(key));
+    }
+}
+
+bool EmuWindow_SDL2::IsOpen() const {
+    return is_open;
+}
+
+bool EmuWindow_SDL2::IsShown() const {
+    return is_shown;
+}
+
+void EmuWindow_SDL2::OnResize() {
+    int width, height;
+    SDL_GL_GetDrawableSize(render_window, &width, &height);
+    UpdateCurrentFramebufferLayout(width, height);
+}
+
+void EmuWindow_SDL2::ShowCursor(bool show_cursor) {
+    SDL_ShowCursor(show_cursor ? SDL_ENABLE : SDL_DISABLE);
+}
+
+void EmuWindow_SDL2::Fullscreen() {
+    SDL_DisplayMode display_mode;
+    switch (Settings::values.fullscreen_mode.GetValue()) {
+    case Settings::FullscreenMode::Exclusive:
+        // Set window size to render size before entering fullscreen -- SDL2 does not resize window
+        // to display dimensions automatically in this mode.
+        if (SDL_GetDesktopDisplayMode(0, &display_mode) == 0) {
+            SDL_SetWindowSize(render_window, display_mode.w, display_mode.h);
+        } else {
+            LOG_ERROR(Frontend, "SDL_GetDesktopDisplayMode failed: {}", SDL_GetError());
+        }
+
+        if (SDL_SetWindowFullscreen(render_window, SDL_WINDOW_FULLSCREEN) == 0) {
+            return;
+        }
+
+        LOG_ERROR(Frontend, "Fullscreening failed: {}", SDL_GetError());
+        LOG_INFO(Frontend, "Attempting to use borderless fullscreen...");
+        [[fallthrough]];
+    case Settings::FullscreenMode::Borderless:
+        if (SDL_SetWindowFullscreen(render_window, SDL_WINDOW_FULLSCREEN_DESKTOP) == 0) {
+            return;
+        }
+
+        LOG_ERROR(Frontend, "Borderless fullscreening failed: {}", SDL_GetError());
+        [[fallthrough]];
+    default:
+        // Fallback algorithm: Maximise window.
+        // Works on all systems (unless something is seriously wrong), so no fallback for this one.
+        LOG_INFO(Frontend, "Falling back on a maximised window...");
+        SDL_MaximizeWindow(render_window);
+        break;
+    }
+}
+
+void EmuWindow_SDL2::WaitEvent() {
+    // Called on main thread
+    SDL_Event event;
+
+    if (!SDL_WaitEvent(&event)) {
+        const char* error = SDL_GetError();
+        if (!error || strcmp(error, "") == 0) {
+            // https://github.com/libsdl-org/SDL/issues/5780
+            // Sometimes SDL will return without actually having hit an error condition;
+            // just ignore it in this case.
+            return;
+        }
+
+        LOG_CRITICAL(Frontend, "SDL_WaitEvent failed: {}", error);
+        exit(1);
+    }
+
+    switch (event.type) {
+    case SDL_WINDOWEVENT:
+        switch (event.window.event) {
+        case SDL_WINDOWEVENT_SIZE_CHANGED:
+        case SDL_WINDOWEVENT_RESIZED:
+        case SDL_WINDOWEVENT_MAXIMIZED:
+        case SDL_WINDOWEVENT_RESTORED:
+            OnResize();
+            break;
+        case SDL_WINDOWEVENT_MINIMIZED:
+        case SDL_WINDOWEVENT_EXPOSED:
+            is_shown = event.window.event == SDL_WINDOWEVENT_EXPOSED;
+            OnResize();
+            break;
+        case SDL_WINDOWEVENT_CLOSE:
+            is_open = false;
+            break;
+        }
+        break;
+    case SDL_KEYDOWN:
+    case SDL_KEYUP:
+        OnKeyEvent(static_cast<int>(event.key.keysym.scancode), event.key.state);
+        break;
+    case SDL_MOUSEMOTION:
+        // ignore if it came from touch
+        if (event.button.which != SDL_TOUCH_MOUSEID)
+            OnMouseMotion(event.motion.x, event.motion.y);
+        break;
+    case SDL_MOUSEBUTTONDOWN:
+    case SDL_MOUSEBUTTONUP:
+        // ignore if it came from touch
+        if (event.button.which != SDL_TOUCH_MOUSEID) {
+            OnMouseButton(event.button.button, event.button.state, event.button.x, event.button.y);
+        }
+        break;
+    case SDL_FINGERDOWN:
+        OnFingerDown(event.tfinger.x, event.tfinger.y,
+                     static_cast<std::size_t>(event.tfinger.touchId));
+        break;
+    case SDL_FINGERMOTION:
+        OnFingerMotion(event.tfinger.x, event.tfinger.y,
+                       static_cast<std::size_t>(event.tfinger.touchId));
+        break;
+    case SDL_FINGERUP:
+        OnFingerUp();
+        break;
+    case SDL_QUIT:
+        is_open = false;
+        break;
+    default:
+        break;
+    }
+
+    const u32 current_time = SDL_GetTicks();
+    if (current_time > last_time + 2000) {
+        const auto results = system.GetAndResetPerfStats();
+        const auto title =
+            fmt::format("yuzu {} | {}-{} | FPS: {:.0f} ({:.0f}%)", Common::g_build_fullname,
+                        Common::g_scm_branch, Common::g_scm_desc, results.average_game_fps,
+                        results.emulation_speed * 100.0);
+        SDL_SetWindowTitle(render_window, title.c_str());
+        last_time = current_time;
+    }
+}
+
+// Credits to Samantas5855 and others for this function.
+void EmuWindow_SDL2::SetWindowIcon() {
+    SDL_RWops* const yuzu_icon_stream = SDL_RWFromConstMem((void*)yuzu_icon, yuzu_icon_size);
+    if (yuzu_icon_stream == nullptr) {
+        LOG_WARNING(Frontend, "Failed to create yuzu icon stream.");
+        return;
+    }
+    SDL_Surface* const window_icon = SDL_LoadBMP_RW(yuzu_icon_stream, 1);
+    if (window_icon == nullptr) {
+        LOG_WARNING(Frontend, "Failed to read BMP from stream.");
+        return;
+    }
+    // The icon is attached to the window pointer
+    SDL_SetWindowIcon(render_window, window_icon);
+    SDL_FreeSurface(window_icon);
+}
+
+void EmuWindow_SDL2::OnMinimalClientAreaChangeRequest(std::pair<u32, u32> minimal_size) {
+    SDL_SetWindowMinimumSize(render_window, minimal_size.first, minimal_size.second);
+}

src/citron_cmd/emu_window/emu_window_sdl2.h

@@ -0,0 +1,95 @@
+// SPDX-FileCopyrightText: 2016 Citra Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <utility>
+
+#include "core/frontend/emu_window.h"
+#include "core/frontend/graphics_context.h"
+
+struct SDL_Window;
+
+namespace Core {
+class System;
+}
+
+namespace InputCommon {
+class InputSubsystem;
+enum class MouseButton;
+} // namespace InputCommon
+
+class EmuWindow_SDL2 : public Core::Frontend::EmuWindow {
+public:
+    explicit EmuWindow_SDL2(InputCommon::InputSubsystem* input_subsystem_, Core::System& system_);
+    ~EmuWindow_SDL2();
+
+    /// Whether the window is still open, and a close request hasn't yet been sent
+    bool IsOpen() const;
+
+    /// Returns if window is shown (not minimized)
+    bool IsShown() const override;
+
+    /// Wait for the next event on the main thread.
+    void WaitEvent();
+
+    // Sets the window icon from yuzu.bmp
+    void SetWindowIcon();
+
+protected:
+    /// Called by WaitEvent when a key is pressed or released.
+    void OnKeyEvent(int key, u8 state);
+
+    /// Converts a SDL mouse button into MouseInput mouse button
+    InputCommon::MouseButton SDLButtonToMouseButton(u32 button) const;
+
+    /// Translates pixel position to float position
+    std::pair<float, float> MouseToTouchPos(s32 touch_x, s32 touch_y) const;
+
+    /// Called by WaitEvent when a mouse button is pressed or released
+    void OnMouseButton(u32 button, u8 state, s32 x, s32 y);
+
+    /// Called by WaitEvent when the mouse moves.
+    void OnMouseMotion(s32 x, s32 y);
+
+    /// Called by WaitEvent when a finger starts touching the touchscreen
+    void OnFingerDown(float x, float y, std::size_t id);
+
+    /// Called by WaitEvent when a finger moves while touching the touchscreen
+    void OnFingerMotion(float x, float y, std::size_t id);
+
+    /// Called by WaitEvent when a finger stops touching the touchscreen
+    void OnFingerUp();
+
+    /// Called by WaitEvent when any event that may cause the window to be resized occurs
+    void OnResize();
+
+    /// Called when users want to hide the mouse cursor
+    void ShowCursor(bool show_cursor);
+
+    /// Called when user passes the fullscreen parameter flag
+    void Fullscreen();
+
+    /// Called when a configuration change affects the minimal size of the window
+    void OnMinimalClientAreaChangeRequest(std::pair<u32, u32> minimal_size) override;
+
+    /// Is the window still open?
+    bool is_open = true;
+
+    /// Is the window being shown?
+    bool is_shown = true;
+
+    /// Internal SDL2 render window
+    SDL_Window* render_window{};
+
+    /// Keeps track of how often to update the title bar during gameplay
+    u32 last_time = 0;
+
+    /// Input subsystem to use with this window.
+    InputCommon::InputSubsystem* input_subsystem;
+
+    /// yuzu core instance
+    Core::System& system;
+};
+
+class DummyContext : public Core::Frontend::GraphicsContext {};

src/citron_cmd/emu_window/emu_window_sdl2_gl.cpp

@@ -0,0 +1,153 @@
+// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <algorithm>
+#include <cstdlib>
+#include <string>
+
+#define SDL_MAIN_HANDLED
+#include <SDL.h>
+
+#include <fmt/format.h>
+#include <glad/glad.h>
+#include "common/logging/log.h"
+#include "common/scm_rev.h"
+#include "common/settings.h"
+#include "common/string_util.h"
+#include "core/core.h"
+#include "input_common/main.h"
+#include "video_core/renderer_base.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2_gl.h"
+
+class SDLGLContext : public Core::Frontend::GraphicsContext {
+public:
+    explicit SDLGLContext(SDL_Window* window_) : window{window_} {
+        context = SDL_GL_CreateContext(window);
+    }
+
+    ~SDLGLContext() {
+        DoneCurrent();
+        SDL_GL_DeleteContext(context);
+    }
+
+    void SwapBuffers() override {
+        SDL_GL_SwapWindow(window);
+    }
+
+    void MakeCurrent() override {
+        if (is_current) {
+            return;
+        }
+        is_current = SDL_GL_MakeCurrent(window, context) == 0;
+    }
+
+    void DoneCurrent() override {
+        if (!is_current) {
+            return;
+        }
+        SDL_GL_MakeCurrent(window, nullptr);
+        is_current = false;
+    }
+
+private:
+    SDL_Window* window;
+    SDL_GLContext context;
+    bool is_current = false;
+};
+
+bool EmuWindow_SDL2_GL::SupportsRequiredGLExtensions() {
+    std::vector<std::string_view> unsupported_ext;
+
+    // Extensions required to support some texture formats.
+    if (!GLAD_GL_EXT_texture_compression_s3tc) {
+        unsupported_ext.push_back("EXT_texture_compression_s3tc");
+    }
+    if (!GLAD_GL_ARB_texture_compression_rgtc) {
+        unsupported_ext.push_back("ARB_texture_compression_rgtc");
+    }
+
+    for (const auto& extension : unsupported_ext) {
+        LOG_CRITICAL(Frontend, "Unsupported GL extension: {}", extension);
+    }
+
+    return unsupported_ext.empty();
+}
+
+EmuWindow_SDL2_GL::EmuWindow_SDL2_GL(InputCommon::InputSubsystem* input_subsystem_,
+                                     Core::System& system_, bool fullscreen)
+    : EmuWindow_SDL2{input_subsystem_, system_} {
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 4);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 6);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_COMPATIBILITY);
+    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
+    SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
+    SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 0);
+    SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
+    if (Settings::values.renderer_debug) {
+        SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);
+    }
+    SDL_GL_SetSwapInterval(0);
+
+    std::string window_title = fmt::format("yuzu {} | {}-{}", Common::g_build_fullname,
+                                           Common::g_scm_branch, Common::g_scm_desc);
+    render_window =
+        SDL_CreateWindow(window_title.c_str(),
+                         SDL_WINDOWPOS_UNDEFINED, // x position
+                         SDL_WINDOWPOS_UNDEFINED, // y position
+                         Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height,
+                         SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+
+    if (render_window == nullptr) {
+        LOG_CRITICAL(Frontend, "Failed to create SDL2 window! {}", SDL_GetError());
+        exit(1);
+    }
+
+    strict_context_required = strcmp(SDL_GetCurrentVideoDriver(), "wayland") == 0;
+
+    SetWindowIcon();
+
+    if (fullscreen) {
+        Fullscreen();
+        ShowCursor(false);
+    }
+
+    window_context = SDL_GL_CreateContext(render_window);
+    core_context = CreateSharedContext();
+
+    if (window_context == nullptr) {
+        LOG_CRITICAL(Frontend, "Failed to create SDL2 GL context: {}", SDL_GetError());
+        exit(1);
+    }
+    if (core_context == nullptr) {
+        LOG_CRITICAL(Frontend, "Failed to create shared SDL2 GL context: {}", SDL_GetError());
+        exit(1);
+    }
+
+    if (!gladLoadGLLoader(static_cast<GLADloadproc>(SDL_GL_GetProcAddress))) {
+        LOG_CRITICAL(Frontend, "Failed to initialize GL functions! {}", SDL_GetError());
+        exit(1);
+    }
+
+    if (!SupportsRequiredGLExtensions()) {
+        LOG_CRITICAL(Frontend, "GPU does not support all required OpenGL extensions! Exiting...");
+        exit(1);
+    }
+
+    OnResize();
+    OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
+    SDL_PumpEvents();
+    LOG_INFO(Frontend, "yuzu Version: {} | {}-{}", Common::g_build_fullname, Common::g_scm_branch,
+             Common::g_scm_desc);
+    Settings::LogSettings();
+}
+
+EmuWindow_SDL2_GL::~EmuWindow_SDL2_GL() {
+    core_context.reset();
+    SDL_GL_DeleteContext(window_context);
+}
+
+std::unique_ptr<Core::Frontend::GraphicsContext> EmuWindow_SDL2_GL::CreateSharedContext() const {
+    return std::make_unique<SDLGLContext>(render_window);
+}

src/citron_cmd/emu_window/emu_window_sdl2_gl.h

@@ -0,0 +1,37 @@
+// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+#include "core/frontend/emu_window.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2.h"
+
+namespace Core {
+class System;
+}
+
+namespace InputCommon {
+class InputSubsystem;
+}
+
+class EmuWindow_SDL2_GL final : public EmuWindow_SDL2 {
+public:
+    explicit EmuWindow_SDL2_GL(InputCommon::InputSubsystem* input_subsystem_, Core::System& system_,
+                               bool fullscreen);
+    ~EmuWindow_SDL2_GL();
+
+    std::unique_ptr<Core::Frontend::GraphicsContext> CreateSharedContext() const override;
+
+private:
+    /// Whether the GPU and driver supports the OpenGL extension required
+    bool SupportsRequiredGLExtensions();
+
+    using SDL_GLContext = void*;
+
+    /// The OpenGL context associated with the window
+    SDL_GLContext window_context;
+
+    /// The OpenGL context associated with the core
+    std::unique_ptr<Core::Frontend::GraphicsContext> core_context;
+};

src/citron_cmd/emu_window/emu_window_sdl2_null.cpp

@@ -0,0 +1,51 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <cstdlib>
+#include <memory>
+#include <string>
+
+#include <fmt/format.h>
+
+#include "common/logging/log.h"
+#include "common/scm_rev.h"
+#include "video_core/renderer_null/renderer_null.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2_null.h"
+
+#ifdef YUZU_USE_EXTERNAL_SDL2
+// Include this before SDL.h to prevent the external from including a dummy
+#define USING_GENERATED_CONFIG_H
+#include <SDL_config.h>
+#endif
+
+#include <SDL.h>
+
+EmuWindow_SDL2_Null::EmuWindow_SDL2_Null(InputCommon::InputSubsystem* input_subsystem_,
+                                         Core::System& system_, bool fullscreen)
+    : EmuWindow_SDL2{input_subsystem_, system_} {
+    const std::string window_title = fmt::format("yuzu {} | {}-{} (Vulkan)", Common::g_build_name,
+                                                 Common::g_scm_branch, Common::g_scm_desc);
+    render_window =
+        SDL_CreateWindow(window_title.c_str(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+                         Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height,
+                         SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+
+    SetWindowIcon();
+
+    if (fullscreen) {
+        Fullscreen();
+        ShowCursor(false);
+    }
+
+    OnResize();
+    OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
+    SDL_PumpEvents();
+    LOG_INFO(Frontend, "yuzu Version: {} | {}-{} (Null)", Common::g_build_name,
+             Common::g_scm_branch, Common::g_scm_desc);
+}
+
+EmuWindow_SDL2_Null::~EmuWindow_SDL2_Null() = default;
+
+std::unique_ptr<Core::Frontend::GraphicsContext> EmuWindow_SDL2_Null::CreateSharedContext() const {
+    return std::make_unique<DummyContext>();
+}

src/citron_cmd/emu_window/emu_window_sdl2_null.h

@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+
+#include "core/frontend/emu_window.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2.h"
+
+namespace Core {
+class System;
+}
+
+namespace InputCommon {
+class InputSubsystem;
+}
+
+class EmuWindow_SDL2_Null final : public EmuWindow_SDL2 {
+public:
+    explicit EmuWindow_SDL2_Null(InputCommon::InputSubsystem* input_subsystem_,
+                                 Core::System& system, bool fullscreen);
+    ~EmuWindow_SDL2_Null() override;
+
+    std::unique_ptr<Core::Frontend::GraphicsContext> CreateSharedContext() const override;
+};

src/citron_cmd/emu_window/emu_window_sdl2_vk.cpp

@@ -0,0 +1,93 @@
+// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <cstdlib>
+#include <memory>
+#include <string>
+
+#include <fmt/format.h>
+
+#include "common/logging/log.h"
+#include "common/scm_rev.h"
+#include "video_core/renderer_vulkan/renderer_vulkan.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2_vk.h"
+
+#include <SDL.h>
+#include <SDL_syswm.h>
+
+EmuWindow_SDL2_VK::EmuWindow_SDL2_VK(InputCommon::InputSubsystem* input_subsystem_,
+                                     Core::System& system_, bool fullscreen)
+    : EmuWindow_SDL2{input_subsystem_, system_} {
+    const std::string window_title = fmt::format("yuzu {} | {}-{} (Vulkan)", Common::g_build_name,
+                                                 Common::g_scm_branch, Common::g_scm_desc);
+    render_window =
+        SDL_CreateWindow(window_title.c_str(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
+                         Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height,
+                         SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
+
+    SDL_SysWMinfo wm;
+    SDL_VERSION(&wm.version);
+    if (SDL_GetWindowWMInfo(render_window, &wm) == SDL_FALSE) {
+        LOG_CRITICAL(Frontend, "Failed to get information from the window manager: {}",
+                     SDL_GetError());
+        std::exit(EXIT_FAILURE);
+    }
+
+    SetWindowIcon();
+
+    if (fullscreen) {
+        Fullscreen();
+        ShowCursor(false);
+    }
+
+    switch (wm.subsystem) {
+#ifdef SDL_VIDEO_DRIVER_WINDOWS
+    case SDL_SYSWM_TYPE::SDL_SYSWM_WINDOWS:
+        window_info.type = Core::Frontend::WindowSystemType::Windows;
+        window_info.render_surface = reinterpret_cast<void*>(wm.info.win.window);
+        break;
+#endif
+#ifdef SDL_VIDEO_DRIVER_X11
+    case SDL_SYSWM_TYPE::SDL_SYSWM_X11:
+        window_info.type = Core::Frontend::WindowSystemType::X11;
+        window_info.display_connection = wm.info.x11.display;
+        window_info.render_surface = reinterpret_cast<void*>(wm.info.x11.window);
+        break;
+#endif
+#ifdef SDL_VIDEO_DRIVER_WAYLAND
+    case SDL_SYSWM_TYPE::SDL_SYSWM_WAYLAND:
+        window_info.type = Core::Frontend::WindowSystemType::Wayland;
+        window_info.display_connection = wm.info.wl.display;
+        window_info.render_surface = wm.info.wl.surface;
+        break;
+#endif
+#ifdef SDL_VIDEO_DRIVER_COCOA
+    case SDL_SYSWM_TYPE::SDL_SYSWM_COCOA:
+        window_info.type = Core::Frontend::WindowSystemType::Cocoa;
+        window_info.render_surface = SDL_Metal_CreateView(render_window);
+        break;
+#endif
+#ifdef SDL_VIDEO_DRIVER_ANDROID
+    case SDL_SYSWM_TYPE::SDL_SYSWM_ANDROID:
+        window_info.type = Core::Frontend::WindowSystemType::Android;
+        window_info.render_surface = reinterpret_cast<void*>(wm.info.android.window);
+        break;
+#endif
+    default:
+        LOG_CRITICAL(Frontend, "Window manager subsystem {} not implemented", wm.subsystem);
+        std::exit(EXIT_FAILURE);
+        break;
+    }
+
+    OnResize();
+    OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
+    SDL_PumpEvents();
+    LOG_INFO(Frontend, "yuzu Version: {} | {}-{} (Vulkan)", Common::g_build_name,
+             Common::g_scm_branch, Common::g_scm_desc);
+}
+
+EmuWindow_SDL2_VK::~EmuWindow_SDL2_VK() = default;
+
+std::unique_ptr<Core::Frontend::GraphicsContext> EmuWindow_SDL2_VK::CreateSharedContext() const {
+    return std::make_unique<DummyContext>();
+}

src/citron_cmd/emu_window/emu_window_sdl2_vk.h

@@ -0,0 +1,26 @@
+// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <memory>
+
+#include "core/frontend/emu_window.h"
+#include "yuzu_cmd/emu_window/emu_window_sdl2.h"
+
+namespace Core {
+class System;
+}
+
+namespace InputCommon {
+class InputSubsystem;
+}
+
+class EmuWindow_SDL2_VK final : public EmuWindow_SDL2 {
+public:
+    explicit EmuWindow_SDL2_VK(InputCommon::InputSubsystem* input_subsystem_, Core::System& system,
+                               bool fullscreen);
+    ~EmuWindow_SDL2_VK() override;
+
+    std::unique_ptr<Core::Frontend::GraphicsContext> CreateSharedContext() const override;
+};