started working on ini parser

public/igamewindow.h

@@ -4,10 +4,24 @@
 #include "iappsystem.h"
 #include "tier0/platform.h"
 
+enum EGraphicsAPI
+{
+	GRAPHICS_API_METAL,
+	GRAPHICS_API_VULKAN,
+};
+
 abstract_class IGameWindow: public IAppSystem
 {
 public:
 	virtual void UpdateWindow() = 0;
+
+	virtual EGraphicsAPI GetGraphicsAPI() = 0;
+
+	virtual int GetVulkanInstanceExtensionCount() = 0;
+	virtual const char **GetVulkanInstanceExtensions() = 0;
+	virtual void CreateVulkanSurface( void *pInstance ) = 0;
+	virtual void DestroyVulkanSurface( void *pInstance ) = 0;
+	virtual void *GetVulkanSurface() = 0;
 };
 
 extern IGameWindow *gamewindow;