1 /*
2
3 Copyright (C) 2015-2018 Night Dive Studios, LLC.
4
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, either version 3 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 */
19 /*
20 * $Source: n:/project/lib/src/2d/RCS/fl8chfl8.c $
21 * $Revision: 1.4 $
22 * $Author: kevin $
23 * $Date: 1993/10/26 02:23:49 $
24 * $Log: fl8chfl8.c $
25 * Revision 1.4 1993/10/26 02:23:49 kevin
26 * Use default clut if passed cl=NULL.
27 *
28 * Revision 1.3 1993/10/19 09:50:17 kaboom
29 * Replaced #include <grd.h" with new headers split from grd.h.
30 *
31 * Revision 1.2 1993/10/08 01:15:07 kaboom
32 * Changed quotes in #include lines to angle brackets for Watcom.
33 *
34 * Revision 1.1 1993/10/06 14:39:25 kevin
35 * Initial revision
36 */
37
38 #include "cnvdat.h"
39 #include "scrmac.h"
40
41 /* draw an unclipped, horizontally flipped flat 8 bitmap to a flat 8
42 canvas through a color lookup table (clut). */
flat8_clut_hflip_flat8_ubitmap(grs_bitmap * bm,short x,short y,uchar * cl)43 void flat8_clut_hflip_flat8_ubitmap(grs_bitmap *bm, short x, short y, uchar *cl) {
44 short w; /* bitmap width */
45 short h; /* height */
46 uchar *src; /* pointer into source bitmap */
47 uchar *dst; /* pointer into canvas memory */
48 ushort row;
49
50 if (cl == NULL)
51 cl = gr_get_clut();
52 h = bm->h;
53 src = bm->bits;
54 dst = grd_bm.bits + y * grd_bm.row + x + bm->w - 1;
55 while (h--) {
56 w = bm->w;
57 while (w--)
58 *dst-- = cl[*src++];
59 src += bm->row - bm->w;
60 dst += grd_bm.row + bm->w;
61 }
62 }
63