rom/hyperlayers/initlayers.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8 #include <aros/libcall.h>
   9 #include <proto/exec.h>
  10 #include <proto/alib.h>
  11
  12 #define DEBUG 0
  13 #include <aros/debug.h>
  14 #undef kprintf
  15
  16 /*****************************************************************************
  17
  18     NAME */
  19 #include <proto/layers.h>
  20 #include "layers_intern.h"
  21
  22         AROS_LH1(void, InitLayers,
  23
  24 /*  SYNOPSIS */
  25         AROS_LHA(struct Layer_Info *, li, A0),
  26
  27 /*  LOCATION */
  28         struct LayersBase *, LayersBase, 5, Layers)
  29
  30 /*  FUNCTION
  31         Initializes the supplied Layer_Info, so it's ready for use.
  32         Leaves the Layer_Info in an unlocked state.
  33
  34     INPUTS
  35         li -- pointer to Layer_Info structure
  36
  37     RESULT
  38
  39     NOTES
  40         This function is obsolete. Use NewLayerInfo() instead.
  41
  42     EXAMPLE
  43
  44     BUGS
  45
  46     SEE ALSO
  47         NewLayerInfo
  48
  49     INTERNALS
  50
  51     HISTORY
  52         27-11-96    digulla automatically created from
  53                             layers_lib.fd and clib/layers_protos.h
  54
  55 *****************************************************************************/
  56 {
  57     AROS_LIBFUNC_INIT
  58     AROS_LIBBASE_EXT_DECL(struct LayersBase *,LayersBase)
  59
  60     UWORD i;
  61
  62     D(bug("InitLayers(li @ $%lx)\n", li));
  63
  64     /* init LayerInfo structure with all zeros */
  65     for(i = 0; i < sizeof(struct Layer_Info); i++)
  66         ((UBYTE *)li)[i] = 0;
  67
  68     NewList((struct List *)&li->gs_Head);
  69
  70     InitSemaphore(&li->Lock);
  71
  72     li->fatten_count = -1;
  73     li->Flags = LIFLG_SUPPORTS_OFFSCREEN_LAYERS;
  74
  75     AROS_LIBFUNC_EXIT
  76 } /* InitLayers */