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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