vulkan instance 까지 생성 완료

include/vulkan/graphics.h

@@ -0,0 +1,20 @@
+#pragma once
+#include <vulkan/vulkan.h>
+#include "glfw/glfw_window.h"
+
+namespace veng {
+class Graphics final {
+ public:
+  Graphics(gsl::not_null<Window *> window);
+  ~Graphics();
+
+ private:
+  void InitializeVulkan();
+  void CreateInstance();
+
+  gsl::span<gsl::czstring> GetSuggestedExtentions();
+
+  VkInstance instance_ = nullptr;
+  gsl::not_null<Window *> window_;
+};
+}  // namespace veng