인스턴스 생성 구조 완료

include/precomp.h

@@ -2,7 +2,10 @@
 #include <cmath>
 #include <cstdint>
 #include <cstdlib>
+#include <functional>
 #include <glm/glm.hpp>
 #include <gsl/gsl>
 #include <string>
 #include <string_view>
+
+#include "utilities.h"

include/utilities.h

@@ -0,0 +1,5 @@
+#pragma once
+
+namespace veng {
+bool streq(gsl::czstring left, gsl::czstring right);
+}

include/vulkan/graphics.h

@@ -1,5 +1,6 @@
 #pragma once
 #include <vulkan/vulkan.h>
+
 #include "glfw/glfw_window.h"
 
 namespace veng {
@@ -12,7 +13,9 @@ class Graphics final {
   void InitializeVulkan();
   void CreateInstance();
 
-  gsl::span<gsl::czstring> GetSuggestedExtentions();
+  static gsl::span<gsl::czstring> GetSuggestedExtentions();
+  static std::vector<VkExtensionProperties> GetSupprotedInstanceExtensions();
+  static bool AreAllExtensionsSupported(gsl::span<gsl::czstring> extensions);
 
   VkInstance instance_ = nullptr;
   gsl::not_null<Window *> window_;