From 1a69c58458eeac23eff283ea01c626e50dc70b74 Mon Sep 17 00:00:00 2001
From: SimoneN64 <simococo03@gmail.com>
Date: Fri, 20 Sep 2024 23:03:53 +0200
Subject: [PATCH] Some progress

---
 external/imgui/CMakeLists.txt |   4 +-
 src/frontend/CMakeLists.txt   |   8 +-
 src/frontend/ImGuiWidget.cpp  | 444 ++++++++++++++++++++++++++++++++++
 src/frontend/ImGuiWidget.hpp  |  43 ++++
 src/frontend/KaizenQt.cpp     |  24 +-
 src/frontend/KaizenQt.hpp     |   2 +-
 src/frontend/MainWindow.cpp   | 150 ++++++++++--
 src/frontend/MainWindow.hpp   |  26 +-
 src/frontend/RenderWidget.hpp |   3 -
 src/frontend/mainwindow.ui    | 146 -----------
 10 files changed, 658 insertions(+), 192 deletions(-)
 create mode 100644 src/frontend/ImGuiWidget.cpp
 create mode 100644 src/frontend/ImGuiWidget.hpp
 delete mode 100644 src/frontend/mainwindow.ui

diff --git a/external/imgui/CMakeLists.txt b/external/imgui/CMakeLists.txt
index bb82a7c8..c837818b 100644
--- a/external/imgui/CMakeLists.txt
+++ b/external/imgui/CMakeLists.txt
@@ -6,6 +6,4 @@ file(GLOB HEADERS *.h)
 list(APPEND SOURCES backends/imgui_impl_sdl3.cpp backends/imgui_impl_vulkan.cpp)
 
 add_library(imgui ${SOURCES} ${HEADERS})
-target_include_directories(imgui PRIVATE . backends ../SDL/include)
-target_compile_definitions(imgui PRIVATE IMGUI_IMPL_VULKAN_USE_VOLK)
-target_compile_definitions(imgui PRIVATE IMGUI_IMPL_VULKAN_NO_PROTOTYPES)
\ No newline at end of file
+target_include_directories(imgui PRIVATE . backends ../SDL/include)
\ No newline at end of file
diff --git a/src/frontend/CMakeLists.txt b/src/frontend/CMakeLists.txt
index 58a3bb67..9f3c7677 100644
--- a/src/frontend/CMakeLists.txt
+++ b/src/frontend/CMakeLists.txt
@@ -6,6 +6,9 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 find_package(Qt6 REQUIRED COMPONENTS Core Gui Widgets)
 
+add_compile_definitions(IMGUI_IMPL_VULKAN_USE_VOLK)
+add_compile_definitions(IMGUI_IMPL_VULKAN_NO_PROTOTYPES)
+
 if (WIN32)
   add_compile_definitions(NOMINMAX)
 endif ()
@@ -68,7 +71,6 @@ add_executable(kaizen-qt
   RenderWidget.hpp
   EmuThread.hpp
   EmuThread.cpp
-  mainwindow.ui
   MainWindow.hpp
   MainWindow.cpp
   SettingsWindow.hpp
@@ -79,7 +81,9 @@ add_executable(kaizen-qt
   AudioSettings.hpp
   AudioSettings.cpp
   InputSettings.hpp
-  InputSettings.cpp)
+  InputSettings.cpp
+  ImGuiWidget.hpp
+  ImGuiWidget.cpp)
 
 include(CheckCCompilerFlag)
 
diff --git a/src/frontend/ImGuiWidget.cpp b/src/frontend/ImGuiWidget.cpp
new file mode 100644
index 00000000..97a6aa9b
--- /dev/null
+++ b/src/frontend/ImGuiWidget.cpp
@@ -0,0 +1,444 @@
+#include <ImGuiWidget.hpp>
+#include <log.hpp>
+#include <QWindow>
+#include <qevent.h>
+#include <SDL3/SDL_vulkan.h>
+
+static void check_vk_result(VkResult err) {
+  if (err == 0)
+    return;
+  fprintf(stderr, "[vulkan] Error: VkResult = %d\n", err);
+  if (err < 0)
+    abort();
+}
+
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+static VKAPI_ATTR VkBool32 VKAPI_CALL debug_report(VkDebugReportFlagsEXT flags, VkDebugReportObjectTypeEXT objectType,
+                                                   uint64_t object, size_t location, int32_t messageCode,
+                                                   const char *pLayerPrefix, const char *pMessage, void *pUserData) {
+  (void)flags;
+  (void)object;
+  (void)location;
+  (void)messageCode;
+  (void)pUserData;
+  (void)pLayerPrefix; // Unused arguments
+  fprintf(stderr, "[vulkan] Debug report from ObjectType: %i\nMessage: %s\n\n", objectType, pMessage);
+  return VK_FALSE;
+}
+#endif // APP_USE_VULKAN_DEBUG_REPORT
+
+static bool IsExtensionAvailable(const std::vector<VkExtensionProperties> &properties, const char *extension) {
+  for (const VkExtensionProperties &p : properties)
+    if (strcmp(p.extensionName, extension) == 0)
+      return true;
+  return false;
+}
+
+void ImGuiWidget::SelectGpu() {
+  uint32_t gpu_count;
+  VkResult err = vkEnumeratePhysicalDevices(instance, &gpu_count, nullptr);
+  check_vk_result(err);
+  IM_ASSERT(gpu_count > 0);
+
+  std::vector<VkPhysicalDevice> gpus;
+  gpus.resize(gpu_count);
+  err = vkEnumeratePhysicalDevices(instance, &gpu_count, gpus.data());
+  check_vk_result(err);
+
+  // If a number >1 of GPUs got reported, find discrete GPU if present, or use first one available. This covers
+  // most common cases (multi-gpu/integrated+dedicated graphics). Handling more complicated setups (multiple
+  // dedicated GPUs) is out of scope of this sample.
+  for (VkPhysicalDevice &device : gpus) {
+    VkPhysicalDeviceProperties properties;
+    vkGetPhysicalDeviceProperties(device, &properties);
+    if (properties.deviceType == VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU) {
+      gpu = device;
+      return;
+    }
+  }
+
+  // Use first GPU (Integrated) if a Discrete one is not available.
+  if (gpu_count > 0) {
+    gpu = gpus[0];
+    return;
+  }
+
+  Util::panic("[ImGui Widget] Could not find a suitable Vulkan GPU!");
+}
+
+void ImGuiWidget::InitVulkan(char const *const *instanceExtensions, uint32_t instanceExtensionsCount) {
+  VkResult err;
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+  volkInitialize();
+#endif
+
+  // Create Vulkan Instance
+  {
+    VkInstanceCreateInfo create_info = {};
+    create_info.sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO;
+
+    // Enumerate available extensions
+    uint32_t properties_count;
+    std::vector<VkExtensionProperties> properties;
+    vkEnumerateInstanceExtensionProperties(nullptr, &properties_count, nullptr);
+    properties.resize(properties_count);
+    err = vkEnumerateInstanceExtensionProperties(nullptr, &properties_count, properties.data());
+    check_vk_result(err);
+
+    std::vector<const char *> extensions;
+    extensions.resize(instanceExtensionsCount);
+    memcpy(extensions.data(), instanceExtensions, instanceExtensionsCount * sizeof(const char *));
+
+    // Enable required extensions
+    if (IsExtensionAvailable(properties, VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME))
+      extensions.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
+#ifdef VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME
+    if (IsExtensionAvailable(properties, VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME)) {
+      extensions.push_back(VK_KHR_PORTABILITY_ENUMERATION_EXTENSION_NAME);
+      create_info.flags |= VK_INSTANCE_CREATE_ENUMERATE_PORTABILITY_BIT_KHR;
+    }
+#endif
+
+    // Enabling validation layers
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+    const char *layers[] = {"VK_LAYER_KHRONOS_validation"};
+    create_info.enabledLayerCount = 1;
+    create_info.ppEnabledLayerNames = layers;
+    instance_extensions.push_back("VK_EXT_debug_report");
+#endif
+
+    // Create Vulkan Instance
+    create_info.enabledExtensionCount = static_cast<uint32_t>(extensions.size());
+    create_info.ppEnabledExtensionNames = extensions.data();
+    err = vkCreateInstance(&create_info, nullptr, &instance);
+    check_vk_result(err);
+#ifdef IMGUI_IMPL_VULKAN_USE_VOLK
+    volkLoadInstance(instance);
+#endif
+
+    // Setup the debug report callback
+#ifdef APP_USE_VULKAN_DEBUG_REPORT
+    auto f_vkCreateDebugReportCallbackEXT =
+      (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(instance, "vkCreateDebugReportCallbackEXT");
+    IM_ASSERT(f_vkCreateDebugReportCallbackEXT != nullptr);
+    VkDebugReportCallbackCreateInfoEXT debug_report_ci = {};
+    debug_report_ci.sType = VK_STRUCTURE_TYPE_DEBUG_REPORT_CALLBACK_CREATE_INFO_EXT;
+    debug_report_ci.flags =
+      VK_DEBUG_REPORT_ERROR_BIT_EXT | VK_DEBUG_REPORT_WARNING_BIT_EXT | VK_DEBUG_REPORT_PERFORMANCE_WARNING_BIT_EXT;
+    debug_report_ci.pfnCallback = debug_report;
+    debug_report_ci.pUserData = nullptr;
+    err = f_vkCreateDebugReportCallbackEXT(instance, &debug_report_ci, nullptr, &g_DebugReport);
+    check_vk_result(err);
+#endif
+  }
+
+  // Select Physical Device (GPU)
+  SelectGpu();
+
+  // Select graphics queue family
+  {
+    uint32_t count;
+    vkGetPhysicalDeviceQueueFamilyProperties(gpu, &count, nullptr);
+    VkQueueFamilyProperties *queues = (VkQueueFamilyProperties *)malloc(sizeof(VkQueueFamilyProperties) * count);
+    vkGetPhysicalDeviceQueueFamilyProperties(gpu, &count, queues);
+    for (uint32_t i = 0; i < count; i++)
+      if (queues[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
+        queueFamily = i;
+        break;
+      }
+    free(queues);
+    IM_ASSERT(queueFamily != (uint32_t)-1);
+  }
+
+  // Create Logical Device (with 1 queue)
+  {
+    std::vector<const char *> device_extensions;
+    device_extensions.push_back("VK_KHR_swapchain");
+
+    // Enumerate physical device extension
+    uint32_t properties_count;
+    std::vector<VkExtensionProperties> properties;
+    vkEnumerateDeviceExtensionProperties(gpu, nullptr, &properties_count, nullptr);
+    properties.resize(properties_count);
+    vkEnumerateDeviceExtensionProperties(gpu, nullptr, &properties_count, properties.data());
+#ifdef VK_KHR_PORTABILITY_SUBSET_EXTENSION_NAME
+    if (IsExtensionAvailable(properties, VK_KHR_PORTABILITY_SUBSET_EXTENSION_NAME))
+      device_extensions.push_back(VK_KHR_PORTABILITY_SUBSET_EXTENSION_NAME);
+#endif
+
+    const float queue_priority[] = {1.0f};
+    VkDeviceQueueCreateInfo queue_info[1] = {};
+    queue_info[0].sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
+    queue_info[0].queueFamilyIndex = queueFamily;
+    queue_info[0].queueCount = 1;
+    queue_info[0].pQueuePriorities = queue_priority;
+    VkDeviceCreateInfo create_info = {};
+    create_info.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO;
+    create_info.queueCreateInfoCount = sizeof(queue_info) / sizeof(queue_info[0]);
+    create_info.pQueueCreateInfos = queue_info;
+    create_info.enabledExtensionCount = (uint32_t)device_extensions.size();
+    create_info.ppEnabledExtensionNames = device_extensions.data();
+    err = vkCreateDevice(gpu, &create_info, nullptr, &device);
+    check_vk_result(err);
+    vkGetDeviceQueue(device, queueFamily, 0, &queue);
+  }
+
+  // Create Descriptor Pool
+  // The example only requires a single combined image sampler descriptor for the font image and only uses one
+  // descriptor set (for that) If you wish to load e.g. additional textures you may need to alter pools sizes.
+  {
+    VkDescriptorPoolSize pool_sizes[] = {
+      {VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, 1},
+    };
+    VkDescriptorPoolCreateInfo pool_info = {};
+    pool_info.sType = VK_STRUCTURE_TYPE_DESCRIPTOR_POOL_CREATE_INFO;
+    pool_info.flags = VK_DESCRIPTOR_POOL_CREATE_FREE_DESCRIPTOR_SET_BIT;
+    pool_info.maxSets = 1;
+    pool_info.poolSizeCount = (uint32_t)IM_ARRAYSIZE(pool_sizes);
+    pool_info.pPoolSizes = pool_sizes;
+    err = vkCreateDescriptorPool(device, &pool_info, nullptr, &descriptorPool);
+    check_vk_result(err);
+  }
+}
+
+void ImGuiWidget::InitWindow() {
+  mainWindowData.Surface = surface;
+
+  // Check for WSI support
+  VkBool32 res;
+  vkGetPhysicalDeviceSurfaceSupportKHR(gpu, queueFamily, mainWindowData.Surface, &res);
+  if (res != VK_TRUE) {
+    fprintf(stderr, "Error no WSI support on physical device 0\n");
+    exit(-1);
+  }
+
+  // Select Surface Format
+  const VkFormat requestSurfaceImageFormat[] = {VK_FORMAT_B8G8R8A8_UNORM, VK_FORMAT_R8G8B8A8_UNORM,
+                                                VK_FORMAT_B8G8R8_UNORM, VK_FORMAT_R8G8B8_UNORM};
+  const VkColorSpaceKHR requestSurfaceColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
+  mainWindowData.SurfaceFormat =
+    ImGui_ImplVulkanH_SelectSurfaceFormat(gpu, mainWindowData.Surface, requestSurfaceImageFormat,
+                                          (size_t)IM_ARRAYSIZE(requestSurfaceImageFormat), requestSurfaceColorSpace);
+
+  // Select Present Mode
+#ifdef APP_UNLIMITED_FRAME_RATE
+  VkPresentModeKHR present_modes[] = {VK_PRESENT_MODE_MAILBOX_KHR, VK_PRESENT_MODE_IMMEDIATE_KHR,
+                                      VK_PRESENT_MODE_FIFO_KHR};
+#else
+  VkPresentModeKHR present_modes[] = {VK_PRESENT_MODE_FIFO_KHR};
+#endif
+  mainWindowData.PresentMode =
+    ImGui_ImplVulkanH_SelectPresentMode(gpu, mainWindowData.Surface, &present_modes[0], IM_ARRAYSIZE(present_modes));
+  // printf("[vulkan] Selected PresentMode = %d\n", mainWindowData.PresentMode);
+
+  // Create SwapChain, RenderPass, Framebuffer, etc.
+  IM_ASSERT(minImageCount >= 2);
+  ImGui_ImplVulkanH_CreateOrResizeWindow(instance, gpu, device, &mainWindowData, queueFamily, nullptr, width(),
+                                         height(), minImageCount);
+}
+
+ImGuiWidget::ImGuiWidget(QWidget *parent) : QWidget(parent) {
+  setAttribute(Qt::WA_OpaquePaintEvent);
+  setAttribute(Qt::WA_NoSystemBackground);
+  setFocusPolicy(Qt::StrongFocus);
+  // HOWEVER, this important attribute stops the "paintEvent" slot from being called,
+  // thus we'll need to write our own method that paints to the screen every frame.
+  setAttribute(Qt::WA_PaintOnScreen);
+  windowHandle()->setSurfaceType(QWindow::VulkanSurface);
+
+  SDL_InitSubSystem(SDL_INIT_VIDEO);
+#ifdef SDL_HINT_IME_SHOW_UI
+  SDL_SetHint(SDL_HINT_IME_SHOW_UI, "1");
+#endif
+
+  auto winPtr = reinterpret_cast<void *>(winId());
+
+  auto props = SDL_CreateProperties();
+#ifdef SDL_PLATFORM_LINUX
+  SDL_SetPointerProperty(props, SDL_PROP_WINDOW_CREATE_WAYLAND_WL_SURFACE_POINTER, winPtr);
+  SDL_SetNumberProperty(props, SDL_PROP_WINDOW_X11_WINDOW_NUMBER, reinterpret_cast<s64>(winPtr));
+#elif SDL_PLATFORM_WINDOWS
+  SDL_SetPointerProperty(props, SDL_PROP_WINDOW_CREATE_WIN32_HWND_POINTER, winPtr);
+#else
+  SDL_SetPointerProperty(props, SDL_PROP_WINDOW_CREATE_COCOA_WINDOW_POINTER, winPtr);
+#endif
+  SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_VULKAN_BOOLEAN, true);
+  SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_RESIZABLE_BOOLEAN, true);
+  SDL_SetBooleanProperty(props, SDL_PROP_WINDOW_CREATE_HIGH_PIXEL_DENSITY_BOOLEAN, true);
+
+  window = SDL_CreateWindowWithProperties(props);
+
+  uint32_t extensionCount = 0;
+  auto extensions = SDL_Vulkan_GetInstanceExtensions(&extensionCount);
+  InitVulkan(extensions, extensionCount);
+
+  if (!SDL_Vulkan_CreateSurface(window, instance, nullptr, &surface)) {
+    Util::panic("[ImGui Widget]: Failed to create Vulkan surface.\n");
+  }
+
+  InitWindow();
+
+  IMGUI_CHECKVERSION();
+  ImGui::CreateContext();
+  ImGuiIO &io = ImGui::GetIO();
+  (void)io;
+  io.ConfigFlags |= ImGuiConfigFlags_DockingEnable; // Enable Docking
+  io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable; // Enable Multi-Viewport / Platform Windows
+  // io.ConfigFlags |= ImGuiConfigFlags_ViewportsNoTaskBarIcons;
+  // io.ConfigFlags |= ImGuiConfigFlags_ViewportsNoMerge;
+
+  // Setup Dear ImGui style
+  ImGui::StyleColorsDark();
+  // ImGui::StyleColorsLight();
+
+  // When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones.
+  ImGuiStyle &style = ImGui::GetStyle();
+  if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
+    style.WindowRounding = 0.0f;
+    style.Colors[ImGuiCol_WindowBg].w = 1.0f;
+  }
+
+  // Setup Platform/Renderer backends
+  ImGui_ImplSDL3_InitForVulkan(window);
+  ImGui_ImplVulkan_InitInfo init_info = {};
+  init_info.Instance = instance;
+  init_info.PhysicalDevice = gpu;
+  init_info.Device = device;
+  init_info.QueueFamily = queueFamily;
+  init_info.Queue = queue;
+  init_info.PipelineCache = pipelineCache;
+  init_info.DescriptorPool = descriptorPool;
+  init_info.RenderPass = mainWindowData.RenderPass;
+  init_info.Subpass = 0;
+  init_info.MinImageCount = minImageCount;
+  init_info.ImageCount = mainWindowData.ImageCount;
+  init_info.MSAASamples = VK_SAMPLE_COUNT_1_BIT;
+  init_info.Allocator = nullptr;
+  init_info.CheckVkResultFn = check_vk_result;
+  ImGui_ImplVulkan_Init(&init_info);
+}
+
+void ImGuiWidget::resizeEvent(QResizeEvent *event) {
+  if (event->size().width() > 0 && event->size().height() > 0 &&
+      (swapChainRebuild || mainWindowData.Width != event->size().width() ||
+       mainWindowData.Height != event->size().height())) {
+    ImGui_ImplVulkan_SetMinImageCount(minImageCount);
+    ImGui_ImplVulkanH_CreateOrResizeWindow(instance, gpu, device, &mainWindowData, queueFamily, nullptr,
+                                           event->size().width(), event->size().height(), minImageCount);
+    mainWindowData.FrameIndex = 0;
+    swapChainRebuild = false;
+  }
+}
+
+void ImGuiWidget::showEvent(QShowEvent *) {
+  connect(&timer, &QTimer::timeout, this, &ImGuiWidget::Repaint);
+  timer.setInterval(16);
+  timer.start();
+}
+
+void ImGuiWidget::Repaint() {
+  ImGui_ImplVulkan_NewFrame();
+  ImGui_ImplSDL3_NewFrame();
+  ImGui::NewFrame();
+
+  ImGui::ShowDemoWindow();
+  ImGui::Render();
+
+  FrameRender(ImGui::GetDrawData());
+
+  ImGui::UpdatePlatformWindows();
+  ImGui::RenderPlatformWindowsDefault();
+
+  FramePresent();
+}
+
+void ImGuiWidget::FrameRender(ImDrawData *drawData) {
+  VkResult err;
+
+  VkSemaphore image_acquired_semaphore =
+    mainWindowData.FrameSemaphores[mainWindowData.SemaphoreIndex].ImageAcquiredSemaphore;
+  VkSemaphore render_complete_semaphore =
+    mainWindowData.FrameSemaphores[mainWindowData.SemaphoreIndex].RenderCompleteSemaphore;
+  err = vkAcquireNextImageKHR(device, mainWindowData.Swapchain, UINT64_MAX, image_acquired_semaphore, VK_NULL_HANDLE,
+                              &mainWindowData.FrameIndex);
+  if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR) {
+    swapChainRebuild = true;
+    return;
+  }
+  check_vk_result(err);
+
+  ImGui_ImplVulkanH_Frame *fd = &mainWindowData.Frames[mainWindowData.FrameIndex];
+  {
+    err = vkWaitForFences(device, 1, &fd->Fence, VK_TRUE,
+                          UINT64_MAX); // wait indefinitely instead of periodically checking
+    check_vk_result(err);
+
+    err = vkResetFences(device, 1, &fd->Fence);
+    check_vk_result(err);
+  }
+  {
+    err = vkResetCommandPool(device, fd->CommandPool, 0);
+    check_vk_result(err);
+    VkCommandBufferBeginInfo info = {};
+    info.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO;
+    info.flags |= VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT;
+    err = vkBeginCommandBuffer(fd->CommandBuffer, &info);
+    check_vk_result(err);
+  }
+  {
+    VkRenderPassBeginInfo info = {};
+    info.sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO;
+    info.renderPass = mainWindowData.RenderPass;
+    info.framebuffer = fd->Framebuffer;
+    info.renderArea.extent.width = mainWindowData.Width;
+    info.renderArea.extent.height = mainWindowData.Height;
+    info.clearValueCount = 1;
+    info.pClearValues = &mainWindowData.ClearValue;
+    vkCmdBeginRenderPass(fd->CommandBuffer, &info, VK_SUBPASS_CONTENTS_INLINE);
+  }
+
+  // Record dear imgui primitives into command buffer
+  ImGui_ImplVulkan_RenderDrawData(drawData, fd->CommandBuffer);
+
+  // Submit command buffer
+  vkCmdEndRenderPass(fd->CommandBuffer);
+  {
+    VkPipelineStageFlags wait_stage = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
+    VkSubmitInfo info = {};
+    info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
+    info.waitSemaphoreCount = 1;
+    info.pWaitSemaphores = &image_acquired_semaphore;
+    info.pWaitDstStageMask = &wait_stage;
+    info.commandBufferCount = 1;
+    info.pCommandBuffers = &fd->CommandBuffer;
+    info.signalSemaphoreCount = 1;
+    info.pSignalSemaphores = &render_complete_semaphore;
+
+    err = vkEndCommandBuffer(fd->CommandBuffer);
+    check_vk_result(err);
+    err = vkQueueSubmit(queue, 1, &info, fd->Fence);
+    check_vk_result(err);
+  }
+}
+
+void ImGuiWidget::FramePresent() {
+  if (swapChainRebuild)
+    return;
+  VkSemaphore render_complete_semaphore =
+    mainWindowData.FrameSemaphores[mainWindowData.SemaphoreIndex].RenderCompleteSemaphore;
+  VkPresentInfoKHR info = {};
+  info.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
+  info.waitSemaphoreCount = 1;
+  info.pWaitSemaphores = &render_complete_semaphore;
+  info.swapchainCount = 1;
+  info.pSwapchains = &mainWindowData.Swapchain;
+  info.pImageIndices = &mainWindowData.FrameIndex;
+  VkResult err = vkQueuePresentKHR(queue, &info);
+  if (err == VK_ERROR_OUT_OF_DATE_KHR || err == VK_SUBOPTIMAL_KHR) {
+    swapChainRebuild = true;
+    return;
+  }
+  check_vk_result(err);
+  mainWindowData.SemaphoreIndex =
+    (mainWindowData.SemaphoreIndex + 1) % mainWindowData.SemaphoreCount; // Now we can use the next set of semaphores
+}
diff --git a/src/frontend/ImGuiWidget.hpp b/src/frontend/ImGuiWidget.hpp
new file mode 100644
index 00000000..246bbb0e
--- /dev/null
+++ b/src/frontend/ImGuiWidget.hpp
@@ -0,0 +1,43 @@
+#pragma once
+#include <imgui.h>
+#include <imgui_impl_sdl3.h>
+#include <imgui_impl_vulkan.h>
+#include <SDL3/SDL.h>
+#include <QTimer>
+#include <QWidget>
+
+class ImGuiWidget : public QWidget {
+  QTimer timer;
+
+  SDL_Window *window{};
+  VkInstance instance = VK_NULL_HANDLE;
+  VkPhysicalDevice gpu = VK_NULL_HANDLE;
+  VkDevice device = VK_NULL_HANDLE;
+  uint32_t queueFamily = static_cast<uint32_t>(-1);
+  VkQueue queue = VK_NULL_HANDLE;
+  VkDebugReportCallbackEXT debugReport = VK_NULL_HANDLE;
+  VkPipelineCache pipelineCache = VK_NULL_HANDLE;
+  VkDescriptorPool descriptorPool = VK_NULL_HANDLE;
+  VkSurfaceKHR surface;
+
+  ImGui_ImplVulkanH_Window mainWindowData;
+  uint32_t minImageCount = 2;
+  bool swapChainRebuild = false;
+
+  void SelectGpu();
+  void InitVulkan(char const *const *, uint32_t);
+  void InitWindow();
+  void FrameRender(ImDrawData *);
+  void FramePresent();
+
+public slots:
+  void Repaint();
+
+public:
+  [[nodiscard]] QPaintEngine *paintEngine() const override { return nullptr; }
+  ImGuiWidget(QWidget* parent);
+
+
+  void resizeEvent(QResizeEvent *event) override;
+  void showEvent(QShowEvent *) override;
+};
diff --git a/src/frontend/KaizenQt.cpp b/src/frontend/KaizenQt.cpp
index 89df71a3..ec7b2689 100644
--- a/src/frontend/KaizenQt.cpp
+++ b/src/frontend/KaizenQt.cpp
@@ -8,9 +8,9 @@
 namespace fs = std::filesystem;
 
 KaizenQt::KaizenQt() noexcept : QWidget(nullptr) {
-  mainWindow = std::make_unique<MainWindowController>();
+  mainWindow = std::make_unique<MainWindow>();
   settingsWindow = std::make_unique<SettingsWindow>();
-  emuThread = std::make_unique<EmuThread>(*mainWindow->view.vulkanWidget, *settingsWindow);
+  emuThread = std::make_unique<EmuThread>(*mainWindow->vulkanWidget, *settingsWindow);
 
   ConnectMainWindowSignalsToSlots();
   Util::RPC::GetInstance().Update(Util::RPC::Idling);
@@ -25,13 +25,13 @@ KaizenQt::KaizenQt() noexcept : QWidget(nullptr) {
 }
 
 void KaizenQt::ConnectMainWindowSignalsToSlots() noexcept {
-  connect(mainWindow.get(), &MainWindowController::OpenSettings, this, [this]() { settingsWindow->show(); });
-  connect(mainWindow.get(), &MainWindowController::OpenROM, this, &KaizenQt::LoadROM);
-  connect(mainWindow.get(), &MainWindowController::Exit, this, &KaizenQt::Quit);
-  connect(mainWindow.get(), &MainWindowController::Reset, emuThread.get(), &EmuThread::Reset);
-  connect(mainWindow.get(), &MainWindowController::Stop, emuThread.get(), &EmuThread::Stop);
-  connect(mainWindow.get(), &MainWindowController::Stop, this, [this]() { mainWindow->setWindowTitle("Kaizen"); });
-  connect(mainWindow.get(), &MainWindowController::Pause, emuThread.get(), &EmuThread::TogglePause);
+  connect(mainWindow.get(), &MainWindow::OpenSettings, this, [this]() { settingsWindow->show(); });
+  connect(mainWindow.get(), &MainWindow::OpenROM, this, &KaizenQt::LoadROM);
+  connect(mainWindow.get(), &MainWindow::Exit, this, &KaizenQt::Quit);
+  connect(mainWindow.get(), &MainWindow::Reset, emuThread.get(), &EmuThread::Reset);
+  connect(mainWindow.get(), &MainWindow::Stop, emuThread.get(), &EmuThread::Stop);
+  connect(mainWindow.get(), &MainWindow::Stop, this, [this]() { mainWindow->setWindowTitle("Kaizen"); });
+  connect(mainWindow.get(), &MainWindow::Pause, emuThread.get(), &EmuThread::TogglePause);
 }
 
 void KaizenQt::dragEnterEvent(QDragEnterEvent *event) {
@@ -46,9 +46,9 @@ void KaizenQt::dropEvent(QDropEvent *event) {
 }
 
 void KaizenQt::LoadROM(const QString &fileName) noexcept {
-  mainWindow->view.actionPause->setEnabled(true);
-  mainWindow->view.actionReset->setEnabled(true);
-  mainWindow->view.actionStop->setEnabled(true);
+  mainWindow->actionPause->setEnabled(true);
+  mainWindow->actionReset->setEnabled(true);
+  mainWindow->actionStop->setEnabled(true);
   emuThread->start();
   emuThread->core.LoadROM(fileName.toStdString());
   auto gameNameDB = emuThread->core.cpu->GetMem().rom.gameNameDB;
diff --git a/src/frontend/KaizenQt.hpp b/src/frontend/KaizenQt.hpp
index 8f9765a5..604a4706 100644
--- a/src/frontend/KaizenQt.hpp
+++ b/src/frontend/KaizenQt.hpp
@@ -35,7 +35,7 @@ public:
 private:
   void Quit() noexcept;
   void ConnectMainWindowSignalsToSlots() noexcept;
-  std::unique_ptr<MainWindowController> mainWindow;
+  std::unique_ptr<MainWindow> mainWindow;
   std::unique_ptr<SettingsWindow> settingsWindow;
   std::unique_ptr<EmuThread> emuThread;
 };
diff --git a/src/frontend/MainWindow.cpp b/src/frontend/MainWindow.cpp
index 1be86ffe..37375ef0 100644
--- a/src/frontend/MainWindow.cpp
+++ b/src/frontend/MainWindow.cpp
@@ -3,49 +3,157 @@
 #include <QKeyEvent>
 #include <QMessageBox>
 #include <QSlider>
+#include <QMenu>
+#include <QMenuBar>
+#include <QStatusBar>
 
-MainWindowController::MainWindowController() noexcept {
-  view.setupUi(this);
-  view.actionPause->setDisabled(true);
-  view.actionReset->setDisabled(true);
-  view.actionStop->setDisabled(true);
-  view.vulkanWidget->hide();
+MainWindow::MainWindow() noexcept {
+  if (objectName().isEmpty())
+    setObjectName("MainWindow");
+  resize(800, 646);
+  actionAbout = new QAction(this);
+  actionAbout->setObjectName("actionAbout");
+  actionOpen = new QAction(this);
+  actionOpen->setObjectName("actionOpen");
+  actionExit = new QAction(this);
+  actionExit->setObjectName("actionExit");
+  actionPause = new QAction(this);
+  actionPause->setObjectName("actionPause");
+  actionReset = new QAction(this);
+  actionReset->setObjectName("actionReset");
+  actionStop = new QAction(this);
+  actionStop->setObjectName("actionStop");
+  actionSettings = new QAction(this);
+  actionSettings->setObjectName("actionSettings");
+  centralwidget = new QWidget(this);
+  centralwidget->setObjectName("centralwidget");
+  verticalLayout = new QVBoxLayout(centralwidget);
+  verticalLayout->setSpacing(0);
+  verticalLayout->setObjectName("verticalLayout");
+  verticalLayout->setContentsMargins(0, 0, 0, 0);
+  horizontalLayout = new QHBoxLayout(centralwidget);
+  horizontalLayout->setSpacing(0);
+  verticalLayout->setObjectName("horizontalLayout");
+  verticalLayout->setContentsMargins(0, 0, 0, 0);
+  vulkanWidget = new RenderWidget(centralwidget);
+  vulkanWidget->setObjectName("vulkanWidget");
+  debugger = new ImGuiWidget(centralwidget);
+  debugger->setObjectName("debugger");
+
+  horizontalLayout->addWidget(vulkanWidget);
+  horizontalLayout->addWidget(debugger);
+  verticalLayout->addLayout(horizontalLayout);
+
+  setCentralWidget(centralwidget);
+  menubar = new QMenuBar(this);
+  menubar->setObjectName("menubar");
+  menubar->setGeometry(QRect(0, 0, 800, 22));
+  menuFile = new QMenu(menubar);
+  menuFile->setObjectName("menuFile");
+  menuEmulation = new QMenu(menubar);
+  menuEmulation->setObjectName("menuEmulation");
+  menuAbout = new QMenu(menubar);
+  menuAbout->setObjectName("menuAbout");
+  setMenuBar(menubar);
+  statusbar = new QStatusBar(this);
+  statusbar->setObjectName("statusbar");
+  setStatusBar(statusbar);
+
+  menubar->addAction(menuFile->menuAction());
+  menubar->addAction(menuEmulation->menuAction());
+  menubar->addAction(menuAbout->menuAction());
+  menuFile->addAction(actionOpen);
+  menuFile->addAction(actionExit);
+  menuEmulation->addAction(actionSettings);
+  menuEmulation->addAction(actionPause);
+  menuEmulation->addAction(actionReset);
+  menuEmulation->addAction(actionStop);
+  menuAbout->addAction(actionAbout);
+
+  Retranslate();
+
+  QMetaObject::connectSlotsByName(this);
+  actionPause->setDisabled(true);
+  actionReset->setDisabled(true);
+  actionStop->setDisabled(true);
+  vulkanWidget->hide();
   ConnectSignalsToSlots();
 }
 
-void MainWindowController::ConnectSignalsToSlots() noexcept {
-  connect(view.actionOpen, &QAction::triggered, this, [this]() {
+void MainWindow::Retranslate() {
+  setWindowTitle(QCoreApplication::translate("MainWindow", "Kaizen", nullptr));
+  actionAbout->setText(QCoreApplication::translate("MainWindow", "About Kaizen", nullptr));
+#if QT_CONFIG(statustip)
+  actionAbout->setStatusTip(QCoreApplication::translate("MainWindow", "About this emulator", nullptr));
+#endif // QT_CONFIG(statustip)
+  actionOpen->setText(QCoreApplication::translate("MainWindow", "Open...", nullptr));
+#if QT_CONFIG(statustip)
+  actionOpen->setStatusTip(QCoreApplication::translate("MainWindow", "Open a ROM", nullptr));
+#endif // QT_CONFIG(statustip)
+#if QT_CONFIG(shortcut)
+  actionOpen->setShortcut(QCoreApplication::translate("MainWindow", "Ctrl+O", nullptr));
+#endif // QT_CONFIG(shortcut)
+  actionExit->setText(QCoreApplication::translate("MainWindow", "Exit", nullptr));
+#if QT_CONFIG(statustip)
+  actionExit->setStatusTip(QCoreApplication::translate("MainWindow", "Quit the emulator", nullptr));
+#endif // QT_CONFIG(statustip)
+  actionPause->setText(QCoreApplication::translate("MainWindow", "Pause", nullptr));
+#if QT_CONFIG(statustip)
+  actionPause->setStatusTip(QCoreApplication::translate("MainWindow", "Pause the emulation", nullptr));
+#endif // QT_CONFIG(statustip)
+  actionReset->setText(QCoreApplication::translate("MainWindow", "Reset", nullptr));
+#if QT_CONFIG(statustip)
+  actionReset->setStatusTip(QCoreApplication::translate("MainWindow", "Reset the emulation", nullptr));
+#endif // QT_CONFIG(statustip)
+  actionStop->setText(QCoreApplication::translate("MainWindow", "Stop", nullptr));
+#if QT_CONFIG(statustip)
+  actionStop->setStatusTip(QCoreApplication::translate("MainWindow", "Stop the emulation", nullptr));
+#endif // QT_CONFIG(statustip)
+  actionSettings->setText(QCoreApplication::translate("MainWindow", "Settings", nullptr));
+#if QT_CONFIG(tooltip)
+  actionSettings->setToolTip(QCoreApplication::translate("MainWindow", "Settings", nullptr));
+#endif // QT_CONFIG(tooltip)
+#if QT_CONFIG(statustip)
+  actionSettings->setStatusTip(QCoreApplication::translate("MainWindow", "Open the settings window", nullptr));
+#endif // QT_CONFIG(statustip)
+  menuFile->setTitle(QCoreApplication::translate("MainWindow", "File", nullptr));
+  menuEmulation->setTitle(QCoreApplication::translate("MainWindow", "Emulation", nullptr));
+  menuAbout->setTitle(QCoreApplication::translate("MainWindow", "Help", nullptr));
+} // retranslateUi
+
+void MainWindow::ConnectSignalsToSlots() noexcept {
+  connect(actionOpen, &QAction::triggered, this, [this]() {
     QString file_name = QFileDialog::getOpenFileName(
       this, "Nintendo 64 executable", QString(),
       "All supported types (*.zip *.ZIP *.7z *.7Z *.rar *.RAR *.tar *.TAR *.n64 *.N64 *.v64 *.V64 *.z64 *.Z64)");
 
     if (!file_name.isEmpty()) {
       emit OpenROM(file_name);
-      view.vulkanWidget->show();
+      vulkanWidget->show();
     }
   });
 
-  connect(view.actionExit, &QAction::triggered, this, [this]() { emit Exit(); });
+  connect(actionExit, &QAction::triggered, this, [this]() { emit Exit(); });
 
-  connect(this, &MainWindowController::destroyed, this, [this]() { emit Exit(); });
+  connect(this, &MainWindow::destroyed, this, [this]() { emit Exit(); });
 
-  connect(view.actionReset, &QAction::triggered, this, [this]() { emit Reset(); });
+  connect(actionReset, &QAction::triggered, this, [this]() { emit Reset(); });
 
-  connect(view.actionStop, &QAction::triggered, this, [this]() {
-    view.vulkanWidget->hide();
-    view.actionPause->setDisabled(true);
-    view.actionReset->setDisabled(true);
-    view.actionStop->setDisabled(true);
+  connect(actionStop, &QAction::triggered, this, [this]() {
+    vulkanWidget->hide();
+    actionPause->setDisabled(true);
+    actionReset->setDisabled(true);
+    actionStop->setDisabled(true);
     emit Stop();
   });
 
-  connect(view.actionPause, &QAction::triggered, this, [this]() {
+  connect(actionPause, &QAction::triggered, this, [this]() {
     textPauseToggle = !textPauseToggle;
-    view.actionPause->setText(textPauseToggle ? "Resume" : "Pause");
+    actionPause->setText(textPauseToggle ? "Resume" : "Pause");
     emit Pause();
   });
 
-  connect(view.actionAbout, &QAction::triggered, this, [this]() {
+  connect(actionAbout, &QAction::triggered, this, [this]() {
     QMessageBox::about(this, tr("About Kaizen"),
                        tr("Kaizen is a Nintendo 64 emulator that strives to offer a friendly user "
                           "experience and great compatibility.\n"
@@ -53,5 +161,5 @@ void MainWindowController::ConnectSignalsToSlots() noexcept {
                           "Nintendo 64 is a registered trademarks of Nintendo Co., Ltd."));
   });
 
-  connect(view.actionSettings, &QAction::triggered, this, [this]() { emit OpenSettings(); });
+  connect(actionSettings, &QAction::triggered, this, [this]() { emit OpenSettings(); });
 }
diff --git a/src/frontend/MainWindow.hpp b/src/frontend/MainWindow.hpp
index 65cd6ef9..9215e472 100644
--- a/src/frontend/MainWindow.hpp
+++ b/src/frontend/MainWindow.hpp
@@ -1,18 +1,36 @@
 #pragma once
 #include <QApplication>
 #include <QMainWindow>
+#include <QVBoxLayout>
 #include <RenderWidget.hpp>
-#include "ui_mainwindow.h"
+#include <ImGuiWidget.hpp>
 
-class MainWindowController : public QMainWindow {
+class MainWindow : public QMainWindow {
   Q_OBJECT
 
 public:
-  MainWindowController() noexcept;
+  MainWindow() noexcept;
 
-  Ui::MainWindow view;
+  QAction *actionAbout;
+  QAction *actionOpen;
+  QAction *actionExit;
+  QAction *actionPause;
+  QAction *actionReset;
+  QAction *actionStop;
+  QAction *actionSettings;
+  QWidget *centralwidget;
+  QVBoxLayout *verticalLayout;
+  QHBoxLayout *horizontalLayout;
+  RenderWidget *vulkanWidget;
+  ImGuiWidget *debugger;
+  QMenuBar *menubar;
+  QMenu *menuFile;
+  QMenu *menuEmulation;
+  QMenu *menuAbout;
+  QStatusBar *statusbar;
 
 private:
+  void Retranslate();
   void ConnectSignalsToSlots() noexcept;
 
   bool textPauseToggle = false;
diff --git a/src/frontend/RenderWidget.hpp b/src/frontend/RenderWidget.hpp
index e08745ca..1facb518 100644
--- a/src/frontend/RenderWidget.hpp
+++ b/src/frontend/RenderWidget.hpp
@@ -1,12 +1,9 @@
 #pragma once
 #undef signals
 #include <ParallelRDPWrapper.hpp>
-#include <QVulkanInstance>
 #include <QVulkanWindow>
 #include <QWidget>
 #include <QWindow>
-#include <QTimer>
-#include <imgui_impl_vulkan.h>
 
 struct QtInstanceFactory : Vulkan::InstanceFactory {
   VkInstance create_instance(const VkInstanceCreateInfo *info) override {
diff --git a/src/frontend/mainwindow.ui b/src/frontend/mainwindow.ui
deleted file mode 100644
index c1ad4475..00000000
--- a/src/frontend/mainwindow.ui
+++ /dev/null
@@ -1,146 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<ui version="4.0">
- <class>MainWindow</class>
- <widget class="QMainWindow" name="MainWindow">
-  <property name="geometry">
-   <rect>
-    <x>0</x>
-    <y>0</y>
-    <width>800</width>
-    <height>646</height>
-   </rect>
-  </property>
-  <property name="windowTitle">
-   <string>Kaizen</string>
-  </property>
-  <widget class="QWidget" name="centralwidget">
-   <layout class="QVBoxLayout" name="verticalLayout">
-    <property name="spacing">
-     <number>0</number>
-    </property>
-    <property name="leftMargin">
-     <number>0</number>
-    </property>
-    <property name="topMargin">
-     <number>0</number>
-    </property>
-    <property name="rightMargin">
-     <number>0</number>
-    </property>
-    <property name="bottomMargin">
-     <number>0</number>
-    </property>
-    <item>
-     <widget class="RenderWidget" name="vulkanWidget" native="true"/>
-    </item>
-   </layout>
-  </widget>
-  <widget class="QMenuBar" name="menubar">
-   <property name="geometry">
-    <rect>
-     <x>0</x>
-     <y>0</y>
-     <width>800</width>
-     <height>22</height>
-    </rect>
-   </property>
-   <widget class="QMenu" name="menuFile">
-    <property name="title">
-     <string>File</string>
-    </property>
-    <addaction name="actionOpen"/>
-    <addaction name="actionExit"/>
-   </widget>
-   <widget class="QMenu" name="menuEmulation">
-    <property name="title">
-     <string>Emulation</string>
-    </property>
-    <addaction name="actionSettings"/>
-    <addaction name="actionPause"/>
-    <addaction name="actionReset"/>
-    <addaction name="actionStop"/>
-   </widget>
-   <widget class="QMenu" name="menuAbout">
-    <property name="title">
-     <string>Help</string>
-    </property>
-    <addaction name="actionAbout"/>
-   </widget>
-   <addaction name="menuFile"/>
-   <addaction name="menuEmulation"/>
-   <addaction name="menuAbout"/>
-  </widget>
-  <widget class="QStatusBar" name="statusbar"/>
-  <action name="actionAbout">
-   <property name="text">
-    <string>About Kaizen</string>
-   </property>
-   <property name="statusTip">
-    <string>About this emulator</string>
-   </property>
-  </action>
-  <action name="actionOpen">
-   <property name="text">
-    <string>Open...</string>
-   </property>
-   <property name="statusTip">
-    <string>Open a ROM</string>
-   </property>
-   <property name="shortcut">
-    <string>Ctrl+O</string>
-   </property>
-  </action>
-  <action name="actionExit">
-   <property name="text">
-    <string>Exit</string>
-   </property>
-   <property name="statusTip">
-    <string>Quit the emulator</string>
-   </property>
-  </action>
-  <action name="actionPause">
-   <property name="text">
-    <string>Pause</string>
-   </property>
-   <property name="statusTip">
-    <string>Pause the emulation</string>
-   </property>
-  </action>
-  <action name="actionReset">
-   <property name="text">
-    <string>Reset</string>
-   </property>
-   <property name="statusTip">
-    <string>Reset the emulation</string>
-   </property>
-  </action>
-  <action name="actionStop">
-   <property name="text">
-    <string>Stop</string>
-   </property>
-   <property name="statusTip">
-    <string>Stop the emulation</string>
-   </property>
-  </action>
-  <action name="actionSettings">
-   <property name="text">
-    <string>Settings</string>
-   </property>
-   <property name="toolTip">
-    <string>Settings</string>
-   </property>
-   <property name="statusTip">
-    <string>Open the settings window</string>
-   </property>
-  </action>
- </widget>
- <customwidgets>
-  <customwidget>
-   <class>RenderWidget</class>
-   <extends>QWidget</extends>
-   <header>RenderWidget.hpp</header>
-  </customwidget>
- </customwidgets>
- <resources/>
- <connections/>
-</ui>