1 /*
2 * Copyright © 1998 Keith Packard
3 *
4 * Permission to use, copy, modify, distribute, and sell this software and its
5 * documentation for any purpose is hereby granted without fee, provided that
6 * the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of Keith Packard not be used in
9 * advertising or publicity pertaining to distribution of the software without
10 * specific, written prior permission. Keith Packard makes no
11 * representations about the suitability of this software for any purpose. It
12 * is provided "as is" without express or implied warranty.
13 *
14 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20 * PERFORMANCE OF THIS SOFTWARE.
21 */
22
23 #ifdef HAVE_DIX_CONFIG_H
24 #include <dix-config.h>
25 #endif
26
27 #include "fb.h"
28
29 FbBits
fbReplicatePixel(Pixel p,int bpp)30 fbReplicatePixel(Pixel p, int bpp)
31 {
32 FbBits b = p;
33
34 b &= FbFullMask(bpp);
35 while (bpp < FB_UNIT) {
36 b |= b << bpp;
37 bpp <<= 1;
38 }
39 return b;
40 }
41
42 #define O 0
43 #define I FB_ALLONES
44
45 const FbMergeRopRec FbMergeRopBits[16] = {
46 {O, O, O, O}, /* clear 0x0 0 */
47 {I, O, O, O}, /* and 0x1 src AND dst */
48 {I, O, I, O}, /* andReverse 0x2 src AND NOT dst */
49 {O, O, I, O}, /* copy 0x3 src */
50 {I, I, O, O}, /* andInverted 0x4 NOT src AND dst */
51 {O, I, O, O}, /* noop 0x5 dst */
52 {O, I, I, O}, /* xor 0x6 src XOR dst */
53 {I, I, I, O}, /* or 0x7 src OR dst */
54 {I, I, I, I}, /* nor 0x8 NOT src AND NOT dst */
55 {O, I, I, I}, /* equiv 0x9 NOT src XOR dst */
56 {O, I, O, I}, /* invert 0xa NOT dst */
57 {I, I, O, I}, /* orReverse 0xb src OR NOT dst */
58 {O, O, I, I}, /* copyInverted 0xc NOT src */
59 {I, O, I, I}, /* orInverted 0xd NOT src OR dst */
60 {I, O, O, I}, /* nand 0xe NOT src OR NOT dst */
61 {O, O, O, I}, /* set 0xf 1 */
62 };
63
64