#ifndef IXR_H
#define IXR_H

#include "tier1/interface.h"
#include "tier2/iappsystem.h"
#include "materialsystem/imaterialsystem.h"
#include "trig.h"

struct XRRenderSurface_t
{
	uint32_t m_uWidth;
	uint32_t m_uHeight;
	Vector m_vPosition;
	Quat m_vRotation;
	float m_fFov;
};

abstract_class IXRHeadset
{
public:
	virtual uint32_t GetSurfaceCount() = 0;
	virtual XRRenderSurface_t GetSurface( uint32_t i ) = 0;
	virtual void SetSurfaceImage( uint32_t i, IImage *pImage ) = 0;

};

abstract_class IXRController
{
public:

};

abstract_class IXRManager: public IAppSystem2
{
public:
	virtual void Frame() = 0;
	virtual void PreRender() = 0;
	virtual void PostRender() = 0;
	virtual void CopySwapchain() = 0;
	virtual uint32_t GetHeadsetCount() = 0;
	virtual IXRHeadset *GetHeadset( uint32_t i ) = 0;
};

#define XR_INTERFACE_VERSION "XR001"
#define OPEN_XR_INTERFACE_VERSION "Open" XR_INTERFACE_VERSION


#endif