#ifndef GRAPHICS_LAYERS_H
#define GRAPHICS_LAYERS_H
/*
**      $Filename: graphics/layers.h $
**      $Release: 2.04 Includes, V37.4 $
**      $Revision: 37.0 $
**      $Date: 91/01/07 $
**
**
**
**      (C) Copyright 1985-1999 Amiga, Inc.
**          All Rights Reserved
*/

#ifndef EXEC_LISTS_H
#include <exec/lists.h>
#endif

#ifndef EXEC_SEMAPHORES_H
#include <exec/semaphores.h>
#endif

#define LAYERSIMPLE    1
#define LAYERSMART     2
#define LAYERSUPER     4
#define LAYERUPDATING  0x10
#define LAYERBACKDROP  0x40
#define LAYERREFRESH   0x80
#define LAYER_CLIPRECTS_LOST    0x100   /* during BeginUpdate */
                                        /* or during layerop */
                                       /* this happens if out of memory */
#define LMN_REGION      -1

struct Layer_Info
{
    struct Layer *top_layer;
    struct Layer *check_lp;        /* system use */
    struct ClipRect *obs;          /* system use */
       struct MinList  FreeClipRects;
       struct SignalSemaphore Lock;
       struct List gs_Head;                    /* system use */
       LONG    longreserved;
       UWORD   Flags;
       BYTE    fatten_count;
       BYTE    LockLayersCount;
    UWORD  LayerInfo_extra_size;
    WORD       *blitbuff;
    VOID        *LayerInfo_extra;
};

#define NEWLAYERINFO_CALLED 1
#define ALERTLAYERSNOMEM 0x83010000

#endif  /* GRAPHICS_LAYERS_H */