#ifndef RENDER_TARGET_POOL_H
#define RENDER_TARGET_POOL_H

#include "Prerequisites.h"

#include <map>

struct RenderTargetInfo
{
public:
	RenderTargetInfo() {Modifier = 0; Width = 0; Height = 0; Format = D3DFMT_UNKNOWN;}
	~RenderTargetInfo() {}

	D3DFORMAT Format;
	int Width;
	int Height;

	int Modifier;

	bool operator==(const RenderTargetInfo& rhs) const
	{
		return (Format == rhs.Format &&
			    Width == rhs.Width &&
			    Height == rhs.Height &&
			    Modifier == rhs.Modifier);
	}
	bool operator<(const RenderTargetInfo& rhs) const
	{
		return Format < rhs.Format;
	}
	bool operator>(const RenderTargetInfo& rhs) const
	{
		return Format > rhs.Format;
	}
};

struct RTObject
{
public:
	RTObject();
	~RTObject();

	RenderTargetPtr RT;
	int RefCount;
};

class RenderTargetPool
{
public:

	static RenderTargetPtr GetRenderTarget(RenderTargetInfo& info);
	static RenderTargetPtr GetRenderTarget(RenderTargetInfo& info, bool createNew);

	static void OnLostDevice();
	static void OnResetDevice();

	static void DestroyRenderTargets();

	static void Initialize(IDirect3DDevice9Ptr& device, D3DVIEWPORT9& viewport);

	static bool IsFormatSupported(const IDirect3D9Ptr& device, 
								  D3DFORMAT format,
								  D3DFORMAT adapterFormat);

public:
	static IDirect3DDevice9Ptr GDevice;
	static D3DVIEWPORT9 Viewport;

private:
	RenderTargetPool();
	~RenderTargetPool();

private:
	static std::map<RenderTargetInfo, RTObject> mRTPool;
};

#endif