hello vulkan

src/App.cpp

@@ -5,7 +5,7 @@
 #include <chrono>
 #include <SDL3/SDL_events.h>
 
-App::App(): window_(new Window()) {
+App::App(): window_(new Window()), engine_(new Engine(window_)) {
     // smart pointers might be a good idea
     // since app will be the top level owner we can use unique ptrs for almost everything
 }

src/App.hpp

@@ -5,6 +5,7 @@
 #include <cstdint>
 
 #include "Window.hpp"
+#include "Engine.hpp"
 
 class App {
 
@@ -17,6 +18,7 @@ public:
 private:
 
     Window* window_;
+    Engine* engine_;
 
     bool rendering_ = true;
 

src/Engine.cpp

@@ -0,0 +1,51 @@
+
+#include "Engine.hpp"
+
+#include "vulkan/vulkan.h"
+#include <iostream>
+
+Engine::Engine(Window* window): window_(window) {
+
+    // cleans up this constructor 
+    init();
+
+}
+
+void Engine::init() {
+
+    VkApplicationInfo appInfo {
+        .sType = VK_STRUCTURE_TYPE_APPLICATION_INFO,
+        .pApplicationName = "maiden",
+        .apiVersion = VK_API_VERSION_1_4
+    };
+
+    uint32_t instanceExtensionsCount = 0;
+    char const* const* instanceExtensions{ SDL_Vulkan_GetInstanceExtensions(&instanceExtensionsCount) };
+
+    VkInstanceCreateInfo instanceCI {
+        .sType = VK_STRUCTURE_TYPE_INSTANCE_CREATE_INFO,
+        .pApplicationInfo = &appInfo,
+        .enabledExtensionCount = instanceExtensionsCount,
+        .ppEnabledExtensionNames = instanceExtensions,
+    };
+
+    VkInstance instance;
+    if(vkCreateInstance(&instanceCI, nullptr, &instance) == VK_SUCCESS) {
+        // TODO: need some kind of logger service
+        std::cout << "[" << __FUNCTION__ << ": " << __LINE__ << "] Vulkan instance successfully created." << std::endl;
+    } else {
+        std::cout << "[" << __FUNCTION__ << ": " << __LINE__ << "] Error creating Vulkan instance." << std::endl;
+    }
+
+    // next steps:
+    // device selection and setup
+    // queue creation
+    // vulkan memory allocator
+    // create vulkan surface
+    // attach surface to window
+
+}
+
+void Engine::draw() {
+
+}

src/Engine.hpp

@@ -0,0 +1,24 @@
+
+#pragma once
+
+#include "Window.hpp"
+
+class Engine {
+
+public:
+
+    Engine(Window* window);
+    ~Engine() = default;
+
+    void init();
+    
+    // draw is called every render iteration in that while loop
+    void draw();
+
+private:
+
+    // might get rid of this
+
+    Window* window_;
+
+};

src/main.cpp

@@ -1,12 +1,8 @@
 
-#include <iostream>
-
 #include "App.hpp"
 
 int main(int argc, char** argv) {
 
-    std::cout << "hi mom !" << std::endl;
-
     // create app and run
     App app;
     app.run();