1 /*
2 * Copyright © 2004 Philip Blundell
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 Philip Blundell not be used in
9 * advertising or publicity pertaining to distribution of the software without
10 * specific, written prior permission. Philip Blundell 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 * PHILIP BLUNDELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL PHILIP BLUNDELL 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 #include <X11/X.h>
24 #include "scrnintstr.h"
25 #include "windowstr.h"
26 #include "dixfontstr.h"
27 #include "mi.h"
28 #include "regionstr.h"
29 #include "globals.h"
30 #include "gcstruct.h"
31 #include "shadow.h"
32 #include "fb.h"
33
34 #if ROTATE == 270
35
36 #define WINSTEPX(stride) (stride)
37 #define WINSTART(x,y) (((pScreen->height - 1) - y) + (x * winStride))
38 #define WINSTEPY() -1
39
40 #elif ROTATE == 90
41
42 #define WINSTEPX(stride) (-stride)
43 #define WINSTEPY() 1
44 #define WINSTART(x,y) (((pScreen->width - 1 - x) * winStride) + y)
45
46 #else
47
48 #error This rotation is not supported here
49
50 #endif
51
52 #ifdef __arm__
53 #define PREFETCH
54 #endif
55
56 void
FUNC(ScreenPtr pScreen,shadowBufPtr pBuf)57 FUNC(ScreenPtr pScreen, shadowBufPtr pBuf)
58 {
59 RegionPtr damage = DamageRegion(pBuf->pDamage);
60 PixmapPtr pShadow = pBuf->pPixmap;
61 int nbox = RegionNumRects(damage);
62 BoxPtr pbox = RegionRects(damage);
63 FbBits *shaBits;
64 Data *shaBase, *shaLine, *sha;
65 FbStride shaStride, winStride;
66 int shaBpp;
67 _X_UNUSED int shaXoff, shaYoff;
68 int x, y, w, h;
69 Data *winBase, *win, *winLine;
70 CARD32 winSize;
71
72 fbGetDrawable(&pShadow->drawable, shaBits, shaStride, shaBpp, shaXoff,
73 shaYoff);
74 shaBase = (Data *) shaBits;
75 shaStride = shaStride * sizeof(FbBits) / sizeof(Data);
76
77 winBase = (Data *) (*pBuf->window) (pScreen, 0, 0,
78 SHADOW_WINDOW_WRITE,
79 &winSize, pBuf->closure);
80 winStride = (Data *) (*pBuf->window) (pScreen, 1, 0,
81 SHADOW_WINDOW_WRITE,
82 &winSize, pBuf->closure) - winBase;
83
84 while (nbox--) {
85 x = pbox->x1;
86 y = pbox->y1;
87 w = (pbox->x2 - pbox->x1);
88 h = pbox->y2 - pbox->y1;
89
90 shaLine = shaBase + (y * shaStride) + x;
91 #ifdef PREFETCH
92 __builtin_prefetch(shaLine);
93 #endif
94 winLine = winBase + WINSTART(x, y);
95
96 while (h--) {
97 sha = shaLine;
98 win = winLine;
99
100 while (sha < (shaLine + w - 16)) {
101 #ifdef PREFETCH
102 __builtin_prefetch(sha + shaStride);
103 #endif
104 *win = *sha++;
105 win += WINSTEPX(winStride);
106 *win = *sha++;
107 win += WINSTEPX(winStride);
108 *win = *sha++;
109 win += WINSTEPX(winStride);
110 *win = *sha++;
111 win += WINSTEPX(winStride);
112
113 *win = *sha++;
114 win += WINSTEPX(winStride);
115 *win = *sha++;
116 win += WINSTEPX(winStride);
117 *win = *sha++;
118 win += WINSTEPX(winStride);
119 *win = *sha++;
120 win += WINSTEPX(winStride);
121
122 *win = *sha++;
123 win += WINSTEPX(winStride);
124 *win = *sha++;
125 win += WINSTEPX(winStride);
126 *win = *sha++;
127 win += WINSTEPX(winStride);
128 *win = *sha++;
129 win += WINSTEPX(winStride);
130
131 *win = *sha++;
132 win += WINSTEPX(winStride);
133 *win = *sha++;
134 win += WINSTEPX(winStride);
135 *win = *sha++;
136 win += WINSTEPX(winStride);
137 *win = *sha++;
138 win += WINSTEPX(winStride);
139 }
140
141 while (sha < (shaLine + w)) {
142 *win = *sha++;
143 win += WINSTEPX(winStride);
144 }
145
146 y++;
147 shaLine += shaStride;
148 winLine += WINSTEPY();
149 }
150 pbox++;
151 } /* nbox */
152 }
153