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/*  Project nGenEx
	Destroyer Studios LLC
	Copyright © 1997-2004. All Rights Reserved.

	SUBSYSTEM:    nGenEx.lib
	FILE:         TexDX9.h
	AUTHOR:       John DiCamillo


	OVERVIEW
	========
	Direct 3D Texture Cache
*/

#ifndef TexDX9_h
#define TexDX9_h

#include "Bitmap.h"

// +--------------------------------------------------------------------+

class  Video;
class  VideoDX9;
class  Bitmap;
struct VD3D_texture_format;

// +--------------------------------------------------------------------+

struct TexCacheDX9Entry
{
	TexCacheDX9Entry() : bitmap_id(0), texture(0), used_last(0), 
	last_modified(0), normal(false) { }

	void Release();
	void Unload();

	HANDLE               bitmap_id;
	IDirect3DTexture9*   texture;
	DWORD                used_last;
	DWORD                last_modified;
	bool                 normal;
};

// +--------------------------------------------------------------------+

class TexCacheDX9
{
public:
	TexCacheDX9(VideoDX9* video);
	virtual ~TexCacheDX9();

	void                 FrameNumber(int n) { frame_number = n; }
	IDirect3DTexture9*   FindTexture(Bitmap* bmp);
	IDirect3DTexture9*   FindNormalMap(Bitmap* bmp, float amp=1);
	bool                 LoadTexture(Bitmap* bmp, TexCacheDX9Entry* entry);
	void                 InvalidateCache();

	int                  count;

private:
	int                  FreeLRU(int tries=4);
	int                  FreeUpCache();
	void                 CreateNormalMap(int index, float amp=1);

	VideoDX9*            video;
	IDirect3D9*          d3d;
	IDirect3DDevice9*    d3ddevice;

	DWORD                vidmem;

	int                  bad_frame;
	DWORD                frame_number;

	int                  mru;
	TexCacheDX9Entry*    cache;
};

#endif // TexDX9_h