Commit before change, diverging from vkguide to add a viewport

.gitmodules

@@ -1,3 +1,4 @@
 [submodule "src/imgui"]
 	path = src/imgui
 	url = https://github.com/ocornut/imgui.git
+	branch = docking

ROADMAP.md

@@ -0,0 +1,11 @@
+# Roadmap
+
+Finish vkguide.dev
+
+Rewrite some part, for structure purposes
+
+Configure offscreen rendering for imgui (docked viewport)
+
+Separate tooling and core, for shipping
+- #ifdef DEBUG for tools
+- #ifdef NDEBUG for release

src/Engine/engine/engine.h

@@ -279,24 +279,6 @@ void Engine::cleanup() {
     vkb::destroy_debug_utils_messenger(_instance, _debugMessenger);
     vkDestroyInstance(_instance, nullptr);
 
-    /*
-
-    vkDestroyCommandPool(_device, _commandPool, nullptr);
-
-
-
-    vkDestroySwapchainKHR(_device, _swapchain, nullptr);
-    // Change to use dynamic rendering
-    vkDestroyRenderPass(_device, _renderPass, nullptr);
-
-    // Destroy swapchain ressources
-    for (uint32_t i = 0; i < _framebuffers.size(); i++) {
-      vkDestroyFramebuffer(_device, _framebuffers[i], nullptr);
-
-      vkDestroyImageView(_device, _swapchainImageViews[i], nullptr);
-    }
-     */
-
     // Destroy the window (at the end)
     glfwDestroyWindow(window);
     glfwTerminate();
@@ -1137,6 +1119,14 @@ void Engine::initImgui() {
   // Init IMGUI
   ImGui::CreateContext();
 
+  // Config
+  ImGuiIO& io = ImGui::GetIO();
+  // Docking
+  io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
+  // Viewports
+  io.ConfigFlags |= ImGuiConfigFlags_ViewportsEnable;
+
+  // Init backends
   ImGui_ImplGlfw_InitForVulkan(
     window,
     true
@@ -1165,6 +1155,8 @@ void Engine::initImgui() {
 
   _mainDeletionQueue.pushFunction([this, imguiPool]() {
     ImGui_ImplVulkan_Shutdown();
+    ImGui_ImplGlfw_Shutdown();
+    ImGui::DestroyContext();
     vkDestroyDescriptorPool(
       _device,
       imguiPool,
@@ -1227,6 +1219,8 @@ void Engine::buildImgui() {
   ImGui_ImplVulkan_NewFrame();
   ImGui_ImplGlfw_NewFrame();
   ImGui::NewFrame();
+  // Docking
+  ImGui::DockSpaceOverViewport(); // Fullscreen dockspace
 
   // Main ImGui things
   ImGui::ShowDemoWindow();
@@ -1246,7 +1240,6 @@ void Engine::buildImgui() {
       backgroundEffects.size() - 1
     );
 
-
     ImGui::InputFloat4(
       "data1",
       (float*)& selected.data.data1
@@ -1266,6 +1259,19 @@ void Engine::buildImgui() {
   }
 	ImGui::End();
 
+
+  if (ImGui::Begin("Viewport")) {
+    // Debug info
+    #ifdef DEBUG
+    ImVec2 avail = ImGui::GetWindowSize();
+    float width = avail.x;
+    float height = avail.y;
+    //println("[Engine:Info] Available size : \nx: {}\ny: {}", width, height );
+    #endif
+  }
+  ImGui::End();
+
+
   // Finish everything
   ImGui::Render();
 }
@@ -1516,7 +1522,5 @@ void Engine::resizeSwapchain() {
   #endif
 }
 
-
-
 #endif
 #endif

src/Engine/main.cpp

@@ -1,3 +1,9 @@
+/*
+Copyright Alexandre Delcamp-Enache, 2026
+Based on vkguide.dev
+See engine.h for extensive documentation
+Also, checkout the roadmap
+*/
 #define ENGINE_IMPL
 #include "engine/engine.h"