rom/graphics/writechunkypixels.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8 #include <aros/debug.h>
   9 #include "graphics_intern.h"
  10 #include "gfxfuncsupport.h"
  11
  12 /*****************************************************************************
  13
  14     NAME */
  15 #include <proto/graphics.h>
  16
  17         AROS_LH7(void, WriteChunkyPixels,
  18
  19 /*  SYNOPSIS */
  20         AROS_LHA(struct RastPort *, rp, A0),
  21         AROS_LHA(LONG             , xstart, D0),
  22         AROS_LHA(LONG             , ystart, D1),
  23         AROS_LHA(LONG             , xstop, D2),
  24         AROS_LHA(LONG             , ystop, D3),
  25         AROS_LHA(UBYTE           *, array, A2),
  26         AROS_LHA(LONG             , bytesperrow, D4),
  27
  28 /*  LOCATION */
  29         struct GfxBase *, GfxBase, 176, Graphics)
  30
  31 /*  FUNCTION
  32         Write a rectangular region of pen values into a rastport.
  33
  34     INPUTS
  35         rp            - destination RastPort
  36         xstart,ystart - starting point
  37         xstop,ystop   - stopping point
  38         array         - array with pen values
  39         bytesperrow   - The number of bytes per row in the source array.
  40                         This should be at least as large as the number of pixels
  41                         being written per line.
  42
  43     RESULT
  44
  45     NOTES
  46
  47     EXAMPLE
  48
  49     BUGS
  50
  51     SEE ALSO
  52
  53     INTERNALS
  54
  55     HISTORY
  56         27-11-96    digulla automatically created from
  57                             graphics_lib.fd and clib/graphics_protos.h
  58
  59 *****************************************************************************/
  60 {
  61     AROS_LIBFUNC_INIT
  62
  63     HIDDT_PixelLUT pixlut;
  64
  65     pixlut.entries = AROS_PALETTE_SIZE;
  66     pixlut.pixels  = IS_HIDD_BM(rp->BitMap) ? HIDD_BM_PIXTAB(rp->BitMap) : NULL;
  67
  68     FIX_GFXCOORD(xstart);
  69     FIX_GFXCOORD(ystart);
  70     FIX_GFXCOORD(xstop);
  71     FIX_GFXCOORD(ystop);
  72
  73     if ((xstart > xstop) || (ystart > ystop)) return;
  74
  75     if (!pixlut.pixels)
  76     {
  77         if (GetBitMapAttr(rp->BitMap, BMA_DEPTH) > 8)
  78         {
  79             D(bug("WriteChunkyPixels: can't work on hicolor/truecolor screen without LUT"));
  80             return;
  81         }
  82     }
  83
  84     write_pixels_8(rp, array
  85         , bytesperrow
  86         , xstart, ystart
  87         , xstop, ystop
  88         , &pixlut
  89         , GfxBase);
  90
  91     AROS_LIBFUNC_EXIT
  92
  93 } /* WriteChunkyPixels */