move imgui stuff

meson.build

@@ -41,6 +41,7 @@ executable(
   sources: [
     'src/main.cpp',
     'src/camera/camera.cpp',
+    'src/gui/imgui_manager.cpp',
     'src/init/vulkan_instance.cpp',
     'src/init/debug_messenger.cpp',
     'src/init/device_manager.cpp',

src/gui/imgui_manager.cpp

@@ -0,0 +1,204 @@
+#include <fmt/format.h>
+
+#include "imgui_manager.hpp"
+
+ImGuiManager::~ImGuiManager() { cleanup(); }
+
+void ImGuiManager::init(
+  vk::Instance            instance,
+  vk::PhysicalDevice      physicalDevice,
+  vk::Device              device,
+  uint32_t                queueFamily,
+  vk::Queue               queue,
+  vk::RenderPass          renderPass,
+  uint32_t                minImageCount,
+  uint32_t                imageCount,
+  vk::SampleCountFlagBits msaaSamples,
+  GLFWwindow*             window
+) {
+  mDevice = device;
+
+  // Create ImGui context
+  IMGUI_CHECKVERSION();
+  ImGui::CreateContext();
+
+  ImGuiIO& imGuiIO = ImGui::GetIO();
+  imGuiIO.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
+  imGuiIO.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;
+  imGuiIO.IniFilename = nullptr; // Disable writing imgui.ini
+
+  // Setup Dear ImGui style
+  ImGui::StyleColorsDark();
+
+  // Initialize ImGui for GLFW and Vulkan
+  ImGui_ImplGlfw_InitForVulkan(window, true);
+
+  vk::DescriptorPoolSize descriptorPoolSize {
+    .type            = vk::DescriptorType::eCombinedImageSampler,
+    .descriptorCount = 1,
+  };
+
+  vk::DescriptorPoolCreateInfo poolInfo {
+    .flags         = vk::DescriptorPoolCreateFlagBits::eFreeDescriptorSet,
+    .maxSets       = 1,
+    .poolSizeCount = 1,
+    .pPoolSizes    = &descriptorPoolSize,
+  };
+
+  mDescriptorPool = device.createDescriptorPoolUnique(poolInfo);
+
+  ImGui_ImplVulkan_InitInfo initInfo {
+    .Instance                    = instance,
+    .PhysicalDevice              = physicalDevice,
+    .Device                      = device,
+    .QueueFamily                 = queueFamily,
+    .Queue                       = queue,
+    .DescriptorPool              = mDescriptorPool.get(),
+    .RenderPass                  = renderPass,
+    .MinImageCount               = minImageCount,
+    .ImageCount                  = imageCount,
+    .MSAASamples                 = static_cast<VkSampleCountFlagBits>(msaaSamples),
+    .PipelineCache               = VK_NULL_HANDLE,
+    .Subpass                     = 0,
+    .UseDynamicRendering         = false,
+    .PipelineRenderingCreateInfo = {},
+    .Allocator                   = nullptr,
+    .CheckVkResultFn             = nullptr,
+    .MinAllocationSize           = 0,
+  };
+
+  ImGui_ImplVulkan_Init(&initInfo);
+  mInitialized = true;
+}
+
+void ImGuiManager::cleanup() {
+  if (mInitialized) {
+    ImGui_ImplVulkan_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
+    mInitialized = false;
+  }
+}
+
+void ImGuiManager::newFrame() {
+  ImGui_ImplVulkan_NewFrame();
+  ImGui_ImplGlfw_NewFrame();
+  ImGui::NewFrame();
+  ImGui::Begin("Controls");
+}
+
+void ImGuiManager::render() {
+  ImGui::End();
+  ImGui::Render();
+
+  if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
+    ImGui::UpdatePlatformWindows();
+    ImGui::RenderPlatformWindowsDefault();
+  }
+}
+
+void ImGuiManager::renderControls(
+  float&     cameraSpeed,
+  float&     fieldOfView,
+  bool&      wireframeMode,
+  float&     lineWidth,
+  float      maxLineWidth,
+  bool       wideLineSupport,
+  Camera&    camera,
+  LightInfo& lightSettings,
+  bool&      needsPipelineRecreation
+) {
+  // Camera Settings
+  if (ImGui::CollapsingHeader("Camera Settings", ImGuiTreeNodeFlags_DefaultOpen)) {
+    ImGui::SliderFloat("Camera Speed", &cameraSpeed, 0.1F, 10.0F, "%.1f");
+    ImGui::SliderFloat("Field of View", &fieldOfView, 45.0F, 120.0F, "%.1f");
+    if (ImGui::Button("Reset Camera"))
+      camera = Camera();
+  }
+
+  // Rendering Settings
+  if (ImGui::CollapsingHeader("Rendering Settings", ImGuiTreeNodeFlags_DefaultOpen)) {
+    if (ImGui::Checkbox("Wireframe Mode", &wireframeMode))
+      needsPipelineRecreation = true;
+
+    if (wireframeMode) {
+      if (wideLineSupport) {
+        if (ImGui::SliderFloat("Line Width", &lineWidth, 1.0F, maxLineWidth, "%.1f")) {
+          needsPipelineRecreation = true;
+        }
+      } else {
+        ImGui::TextColored(ImVec4(1.0F, 0.5F, 0.5F, 1.0F), "Wide lines not supported on this device");
+        lineWidth = 1.0F;
+      }
+    }
+  }
+
+  renderControlsHelp();
+  renderFrameMetrics();
+  renderCameraInfo(camera);
+  renderLightControls(lightSettings);
+}
+
+void ImGuiManager::renderControlsHelp() {
+  if (ImGui::CollapsingHeader("Controls", ImGuiTreeNodeFlags_DefaultOpen)) {
+    ImGui::BulletText("Use mouse to look around");
+    ImGui::BulletText("WASD to move horizontally");
+    ImGui::BulletText("Space/Shift to move up/down");
+    ImGui::BulletText("ESC to toggle mouse capture");
+  }
+}
+
+void ImGuiManager::renderFrameMetrics() {
+  if (ImGui::CollapsingHeader("Performance", ImGuiTreeNodeFlags_DefaultOpen)) {
+    ImGui::Text(
+      "Application average %.3f ms/frame (%.1f FPS)",
+      static_cast<double>(1000.0F / ImGui::GetIO().Framerate),
+      static_cast<double>(ImGui::GetIO().Framerate)
+    );
+  }
+}
+
+void ImGuiManager::renderMemoryUsage(
+  size_t vertexSize,
+  size_t indexSize,
+  size_t vertexCount,
+  size_t indexCount
+) {
+  ImGui::Separator();
+  ImGui::Text("Memory Usage:");
+  ImGui::Text(
+    "Vertex Buffer: %.2f MB",
+    (static_cast<double>(vertexCount) * static_cast<double>(vertexSize)) / (1024.0 * 1024.0)
+  );
+  ImGui::Text(
+    "Index Buffer: %.2f MB",
+    (static_cast<double>(indexCount) * static_cast<double>(indexSize)) / (1024.0 * 1024.0)
+  );
+}
+
+void ImGuiManager::renderCameraInfo(const Camera& camera) {
+  ImGui::Separator();
+  ImGui::Text("Camera Information:");
+  ImGui::Text(
+    "Position: (%.2f, %.2f, %.2f)", camera.getPosition().x, camera.getPosition().y, camera.getPosition().z
+  );
+  ImGui::Text(
+    "Front Vector: (%.2f, %.2f, %.2f)", camera.getFront().x, camera.getFront().y, camera.getFront().z
+  );
+  ImGui::Text("Yaw: %.2f°, Pitch: %.2f°", camera.getYaw(), camera.getPitch());
+}
+
+void ImGuiManager::renderLightControls(LightInfo& lightSettings) {
+  ImGui::Separator();
+  ImGui::Text("Light Controls:");
+
+  // Light Position
+  ImGui::DragFloat3("Light Position", &lightSettings.position.x, 0.1F, -10.0F, 10.0F);
+
+  // Light Color
+  ImGui::ColorEdit3("Light Color", &lightSettings.color.x);
+
+  // Light Strengths
+  ImGui::SliderFloat("Ambient Strength", &lightSettings.ambient_strength, 0.0F, 1.0F);
+  ImGui::SliderFloat("Specular Strength", &lightSettings.specular_strength, 0.0F, 1.0F);
+}

src/gui/imgui_manager.hpp

@@ -0,0 +1,61 @@
+#pragma once
+
+#include <imgui.h>
+#include <imgui_impl_glfw.h>
+#include <imgui_impl_vulkan.h>
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include <vulkan/vulkan.hpp>
+
+#include "../camera/camera.hpp"
+#include "../structs/light_info.hpp"
+
+class ImGuiManager {
+ public:
+  ImGuiManager()                                   = default;
+  ImGuiManager(const ImGuiManager&)                = delete;
+  ImGuiManager(ImGuiManager&&)                     = delete;
+  fn operator=(const ImGuiManager&)->ImGuiManager& = delete;
+  fn operator=(ImGuiManager&&)->ImGuiManager&      = delete;
+  ~ImGuiManager();
+
+  void init(
+    vk::Instance            instance,
+    vk::PhysicalDevice      physicalDevice,
+    vk::Device              device,
+    uint32_t                queueFamily,
+    vk::Queue               queue,
+    vk::RenderPass          renderPass,
+    uint32_t                minImageCount,
+    uint32_t                imageCount,
+    vk::SampleCountFlagBits msaaSamples,
+    GLFWwindow*             window
+  );
+
+  fn        cleanup() -> void;
+  static fn newFrame() -> void;
+  static fn render() -> void;
+  static fn renderControls(
+    float&     cameraSpeed,
+    float&     fieldOfView,
+    bool&      wireframeMode,
+    float&     lineWidth,
+    float      maxLineWidth,
+    bool       wideLineSupport,
+    Camera&    camera,
+    LightInfo& lightSettings,
+    bool&      needsPipelineRecreation
+  ) -> void;
+  static fn renderMemoryUsage(size_t vertexSize, size_t indexSize, size_t vertexCount, size_t indexCount)
+    -> void;
+
+ private:
+  vk::UniqueDescriptorPool mDescriptorPool;
+  vk::Device               mDevice      = nullptr;
+  bool                     mInitialized = false;
+
+  static fn renderControlsHelp() -> void;
+  static fn renderFrameMetrics() -> void;
+  static fn renderCameraInfo(const Camera& camera) -> void;
+  static fn renderLightControls(LightInfo& lightSettings) -> void;
+};

src/main.cpp

@@ -41,9 +41,7 @@ VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE
 #include "window/window_manager.hpp" // Window manager
 
 // ImGui headers for GUI
-#include <imgui.h>
+#include "gui/imgui_manager.hpp"
-#include <imgui_impl_glfw.h>
-#include <imgui_impl_vulkan.h>
 
 using namespace constants;
 
@@ -76,9 +74,7 @@ class VulkanApp {
       }
 
     // Shut down ImGui
-    ImGui_ImplVulkan_Shutdown();
+    mImGuiManager.cleanup();
-    ImGui_ImplGlfw_Shutdown();
-    ImGui::DestroyContext();
   }
 
  private:
@@ -153,7 +149,6 @@ class VulkanApp {
   std::vector<void*>                  mCameraUniformBuffersMapped; ///< Mapped camera uniform buffers
 
   vk::UniqueDescriptorPool       mDescriptorPool; ///< Descriptor pool for the application
-  vk::UniqueDescriptorPool       mImGuiDescriptorPool; ///< Separate descriptor pool for ImGui
   std::vector<vk::DescriptorSet> mDescriptorSets; ///< Descriptor sets for binding resources
 
   std::vector<vk::UniqueCommandBuffer> mCommandBuffers; ///< Command buffers for drawing commands
@@ -193,6 +188,8 @@ class VulkanApp {
 
   glm::mat4 mView; ///< View matrix
 
+  ImGuiManager mImGuiManager; ///< ImGui manager for GUI rendering
+
   static fn processInput(vkfw::Window& window, Camera& camera, const f32& deltaTime, const f32& cameraSpeed)
     -> void {
     if (window.getKey(vkfw::Key::eW) == vkfw::eTrue)
@@ -337,74 +334,20 @@ class VulkanApp {
     createCommandBuffers();       // Create command buffers for rendering commands
     createCrosshairBuffers();     // Create crosshair buffers
     createSyncObjects();          // Create synchronization objects (semaphores and fences)
-    initImGui();                  // Initialize Dear ImGui for GUI rendering
-  }
 
-  /**
+    // Initialize ImGui
-   * @brief Initializes the ImGui library for use with GLFW and Vulkan.
+    mImGuiManager.init(
-   *
+      mInstance.get(),
-   * This function sets up ImGui for rendering with Vulkan and GLFW. It creates the ImGui context,
+      mPhysicalDevice,
-   * sets up the style, initializes ImGui for GLFW and Vulkan, and creates a descriptor pool for ImGui.
+      mDevice.get(),
-   */
-  fn initImGui() -> void {
-    // Create ImGui context
-    IMGUI_CHECKVERSION();
-    ImGui::CreateContext();
-
-    // Remember to use a reference here, otherwise
-    // the ImGui::GetIO() function will return a
-    // copy and the changes won't be saved.
-    ImGuiIO& imGuiIO = ImGui::GetIO();
-
-    // Enable docking and viewports
-    imGuiIO.ConfigFlags |= ImGuiConfigFlags_DockingEnable;   // Enable Docking
-    imGuiIO.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable; // Enable Multi-Viewport
-
-    // Disable writing imgui.ini
-    imGuiIO.IniFilename = nullptr;
-
-    // Setup Dear ImGui style
-    ImGui::StyleColorsDark();
-
-    // Initialize ImGui for GLFW and Vulkan
-    ImGui_ImplGlfw_InitForVulkan(mWindow.get(), true);
-
-    vk::DescriptorPoolSize descriptorPoolSize = {
-      .type            = vk::DescriptorType::eCombinedImageSampler,
-      .descriptorCount = 1,
-    };
-
-    vk::DescriptorPoolCreateInfo poolInfo {
-      .flags         = vk::DescriptorPoolCreateFlagBits::eFreeDescriptorSet,
-      .maxSets       = 1,
-      .poolSizeCount = 1,
-      .pPoolSizes    = &descriptorPoolSize,
-    };
-
-    mImGuiDescriptorPool = mDevice->createDescriptorPoolUnique(poolInfo);
-
-    ImGui_ImplVulkan_InitInfo initInfo = {
-      .Instance       = mInstance.get(),
-      .PhysicalDevice = mPhysicalDevice,
-      .Device         = mDevice.get(),
-      .QueueFamily =
       DeviceManager::findQueueFamilies(mPhysicalDevice, mSurface.get()).graphics_family.value(),
-      .Queue                       = mGraphicsQueue,
+      mGraphicsQueue,
-      .DescriptorPool              = mImGuiDescriptorPool.get(),
+      mRenderPass.get(),
-      .RenderPass                  = mRenderPass.get(),
+      MAX_FRAMES_IN_FLIGHT,
-      .MinImageCount               = MAX_FRAMES_IN_FLIGHT,
+      static_cast<uint32_t>(mSwapChainImages.size()),
-      .ImageCount                  = static_cast<u32>(mSwapChainImages.size()),
+      mMsaaSamples,
-      .MSAASamples                 = static_cast<VkSampleCountFlagBits>(mMsaaSamples),
+      mWindow.get()
-      .PipelineCache               = VK_NULL_HANDLE,
+    );
-      .Subpass                     = 0,
-      .UseDynamicRendering         = false,
-      .PipelineRenderingCreateInfo = {},
-      .Allocator                   = nullptr,
-      .CheckVkResultFn             = nullptr,
-      .MinAllocationSize           = 0,
-    };
-
-    ImGui_ImplVulkan_Init(&initInfo);
   }
 
   /**
@@ -430,9 +373,25 @@ class VulkanApp {
       updateFrameStats(lastFpsUpdate, frameCounter);
       vkfw::pollEvents();
 
-      setupImGuiFrame();
+      mImGuiManager.newFrame();
-      renderImGuiControls();
+      bool needsPipelineRecreation = false;
-      finalizeImGuiFrame();
+      mImGuiManager.renderControls(
+        mCameraSpeed,
+        mFieldOfView,
+        mWireframeMode,
+        mLineWidth,
+        mMaxLineWidth,
+        mWideLineSupport,
+        mCamera,
+        mLightSettings,
+        needsPipelineRecreation
+      );
+      mImGuiManager.renderMemoryUsage(sizeof(Vertex), sizeof(uint32_t), mVertices.size(), mIndices.size());
+      if (needsPipelineRecreation) {
+        mDevice->waitIdle();
+        createGraphicsPipeline();
+      }
+      mImGuiManager.render();
 
       drawFrame();
     }
@@ -440,106 +399,6 @@ class VulkanApp {
     mDevice->waitIdle();
   }
 
-  fn renderImGuiControls() -> void {
-    // Camera Settings
-    if (ImGui::CollapsingHeader("Camera Settings", ImGuiTreeNodeFlags_DefaultOpen)) {
-      ImGui::SliderFloat("Camera Speed", &mCameraSpeed, 0.1F, 10.0F, "%.1f");
-      ImGui::SliderFloat("Field of View", &mFieldOfView, 45.0F, 120.0F, "%.1f");
-      if (ImGui::Button("Reset Camera"))
-        mCamera = Camera();
-    }
-
-    // Rendering Settings
-    if (ImGui::CollapsingHeader("Rendering Settings", ImGuiTreeNodeFlags_DefaultOpen)) {
-      if (ImGui::Checkbox("Wireframe Mode", &mWireframeMode))
-        recreateSwapChain();
-
-      if (mWireframeMode) {
-        if (mWideLineSupport) {
-          if (ImGui::SliderFloat("Line Width", &mLineWidth, 1.0F, mMaxLineWidth, "%.1f")) {
-            mDevice->waitIdle();
-            createGraphicsPipeline();
-          }
-        } else {
-          ImGui::TextColored(ImVec4(1.0F, 0.5F, 0.5F, 1.0F), "Wide lines not supported on this device");
-          mLineWidth = 1.0F;
-        }
-      }
-    }
-
-    renderControlsHelp();
-    renderPerformanceMetrics();
-  }
-
-  static fn renderControlsHelp() -> void {
-    if (ImGui::CollapsingHeader("Controls", ImGuiTreeNodeFlags_DefaultOpen)) {
-      ImGui::BulletText("Use mouse to look around");
-      ImGui::BulletText("WASD to move horizontally");
-      ImGui::BulletText("Space/Shift to move up/down");
-      ImGui::BulletText("ESC to toggle mouse capture");
-    }
-  }
-
-  fn renderPerformanceMetrics() -> void {
-    if (ImGui::CollapsingHeader("Performance", ImGuiTreeNodeFlags_DefaultOpen)) {
-      renderFrameMetrics();
-      renderMemoryUsage();
-      renderCameraInfo();
-      renderLightControls();
-    }
-  }
-
-  static fn renderFrameMetrics() -> void {
-    ImGui::Text(
-      "Application average %.3f ms/frame (%.1f FPS)",
-      static_cast<f64>(1000.0F / ImGui::GetIO().Framerate),
-      static_cast<f64>(ImGui::GetIO().Framerate)
-    );
-  }
-
-  fn renderMemoryUsage() -> void {
-    ImGui::Separator();
-    ImGui::Text("Memory Usage:");
-    ImGui::Text(
-      "Vertex Buffer: %.2f MB",
-      (static_cast<double>(mVertices.size()) * static_cast<double>(sizeof(Vertex))) / (1024.0 * 1024.0)
-    );
-    ImGui::Text(
-      "Index Buffer: %.2f MB",
-      (static_cast<double>(mIndices.size()) * static_cast<double>(sizeof(uint32_t))) / (1024.0 * 1024.0)
-    );
-  }
-
-  fn renderCameraInfo() -> void {
-    ImGui::Separator();
-    ImGui::Text("Camera Information:");
-    ImGui::Text(
-      "Position: (%.2f, %.2f, %.2f)",
-      mCamera.getPosition().x,
-      mCamera.getPosition().y,
-      mCamera.getPosition().z
-    );
-    ImGui::Text(
-      "Front Vector: (%.2f, %.2f, %.2f)", mCamera.getFront().x, mCamera.getFront().y, mCamera.getFront().z
-    );
-    ImGui::Text("Yaw: %.2f°, Pitch: %.2f°", mCamera.getYaw(), mCamera.getPitch());
-  }
-
-  fn renderLightControls() -> void {
-    ImGui::Separator();
-    ImGui::Text("Light Controls:");
-
-    // Light Position
-    ImGui::DragFloat3("Light Position", &mLightSettings.position.x, 0.1F, -10.0F, 10.0F);
-
-    // Light Color
-    ImGui::ColorEdit3("Light Color", &mLightSettings.color.x);
-
-    // Light Strengths
-    ImGui::SliderFloat("Ambient Strength", &mLightSettings.ambient_strength, 0.0F, 1.0F);
-    ImGui::SliderFloat("Specular Strength", &mLightSettings.specular_strength, 0.0F, 1.0F);
-  }
-
   fn updateFrameStats(f64& lastFpsUpdate, i32& frameCounter) -> void {
     f64 currentFrame = vkfw::getTime();
     if (currentFrame - lastFpsUpdate > 1.0) {
@@ -553,23 +412,6 @@ class VulkanApp {
     ++frameCounter;
   }
 
-  static fn setupImGuiFrame() -> void {
-    ImGui_ImplVulkan_NewFrame();
-    ImGui_ImplGlfw_NewFrame();
-    ImGui::NewFrame();
-    ImGui::Begin("Controls");
-  }
-
-  static fn finalizeImGuiFrame() -> void {
-    ImGui::End();
-    ImGui::Render();
-
-    if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable) {
-      ImGui::UpdatePlatformWindows();
-      ImGui::RenderPlatformWindowsDefault();
-    }
-  }
-
   /**
    * @brief Cleans up the swap chain resources.
    *