rom/graphics/inittmpras.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$        $Log
   4
   5     Desc: Graphics function InitRastPort()
   6     Lang: english
   7 */
   8 #include "graphics_intern.h"
   9 #include <graphics/rastport.h>
  10 #include <proto/exec.h>
  11 #include <proto/graphics.h>
  12
  13 /*****************************************************************************
  14
  15     NAME */
  16
  17         AROS_LH3(void, InitTmpRas,
  18
  19 /*  SYNOPSIS */
  20         AROS_LHA(struct TmpRas  *, tmpras, A0),
  21         AROS_LHA(void *          , buffer, A1),
  22         AROS_LHA(ULONG           , size  , D0),
  23
  24 /*  LOCATION */
  25         struct GfxBase *, GfxBase, 78, Graphics)
  26
  27 /*  FUNCTION
  28         Initializes a TmpRas structure. The user has to connect the
  29         TmpRas structure to the rastport.
  30         Some routines need extra memory in order to be able to operate
  31         properly.
  32
  33     INPUTS
  34         tmpras - pointer to a TmpRas structure to be initialized
  35         buffer - pointer to a piece of chip memory.
  36         size   - size in bytes of buffer.
  37
  38     RESULT
  39         Properly initialized TmpRas structure to link to RastPort structure
  40         for use with functions like Flood(), Text() and AreaEnd().
  41
  42     NOTES
  43
  44     EXAMPLE
  45
  46     BUGS
  47         The function itself is a bug.
  48         Why does this function exist at all? The necessary memory should
  49         be allocated in InitRastPort() or the functions that need it.
  50
  51     SEE ALSO
  52
  53     INTERNALS
  54
  55     HISTORY
  56
  57 *****************************************************************************/
  58 {
  59   AROS_LIBFUNC_INIT
  60   AROS_LIBBASE_EXT_DECL(struct GfxBase *,GfxBase)
  61
  62   tmpras->RasPtr = buffer;
  63   tmpras->Size   = size;
  64
  65   AROS_LIBFUNC_EXIT
  66 } /* InitTmpRas */