#ifndef GAME_WINDOW_H
#define GAME_WINDOW_H

#include "tier2/iappsystem.h"
#include "tier0/platform.h"
#include "materialsystem/imaterialsystem.h"

enum EGraphicsAPI
{
	GRAPHICS_API_METAL,
	GRAPHICS_API_VULKAN,
};

abstract_class IGameWindow: public IAppSystem
{
public:
	virtual void UpdateWindow() = 0;


	// Rendering info 
	virtual void SetRenderImage( IImage *pImage ) = 0;
	virtual bool BIsRenderResolutionUpdated() = 0;
	virtual void GetRenderWidth() = 0;
	virtual void GetRenderHeight() = 0;
	virtual EGraphicsAPI GetGraphicsAPI() = 0;

	// Vulkan stuff
	virtual int GetVulkanInstanceExtensionCount() = 0;
	virtual const char **GetVulkanInstanceExtensions() = 0;

	virtual void CreateVulkanSurface( void *pInstance, void *pDevice ) = 0;
	virtual void DestroyVulkanSurface( void *pInstance, void *pDevice ) = 0;

	virtual void *GetVulkanSurface() = 0;
	virtual void *GetVulkanFence( int iFrame ) = 0;
	virtual void *GetVulkanDrawSemaphore( int iFrame ) = 0;
	virtual void *GetVulkanPresentSemaphore( int iFrame ) = 0;
	virtual IImage *GetVulkanSwapchainImage( int iFrame ) = 0;
};

extern IGameWindow *gamewindow;

#endif