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a09e091a JB |
1 | /* |
2 | * | |
3 | * Copyright © 2000 Keith Packard | |
4 | * | |
5 | * Permission to use, copy, modify, distribute, and sell this software and its | |
6 | * documentation for any purpose is hereby granted without fee, provided that | |
7 | * the above copyright notice appear in all copies and that both that | |
8 | * copyright notice and this permission notice appear in supporting | |
9 | * documentation, and that the name of Keith Packard not be used in | |
10 | * advertising or publicity pertaining to distribution of the software without | |
11 | * specific, written prior permission. Keith Packard makes no | |
12 | * representations about the suitability of this software for any purpose. It | |
13 | * is provided "as is" without express or implied warranty. | |
14 | * | |
15 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
16 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
17 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
18 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
19 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
20 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
21 | * PERFORMANCE OF THIS SOFTWARE. | |
22 | */ | |
23 | ||
24 | #ifdef HAVE_DIX_CONFIG_H | |
25 | #include <dix-config.h> | |
26 | #endif | |
27 | ||
28 | #include <stdlib.h> | |
29 | ||
30 | #include <X11/X.h> | |
31 | #include "scrnintstr.h" | |
32 | #include "windowstr.h" | |
33 | #include <X11/fonts/font.h> | |
34 | #include "dixfontstr.h" | |
35 | #include <X11/fonts/fontstruct.h> | |
36 | #include "mi.h" | |
37 | #include "regionstr.h" | |
38 | #include "globals.h" | |
39 | #include "gcstruct.h" | |
40 | #include "shadow.h" | |
41 | #include "fb.h" | |
42 | ||
43 | /* | |
44 | * 32 4-bit pixels per write | |
45 | */ | |
46 | ||
47 | #define PL_SHIFT 7 | |
48 | #define PL_UNIT (1 << PL_SHIFT) | |
49 | #define PL_MASK (PL_UNIT - 1) | |
50 | ||
51 | /* | |
52 | * 32->8 conversion: | |
53 | * | |
54 | * 7 6 5 4 3 2 1 0 | |
55 | * A B C D E F G H | |
56 | * | |
57 | * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 | |
58 | * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 | |
59 | * m . . . H . . . G . . . F . . . E . . . D . . . C . . . B . . . A | |
60 | * m1 G . . . F . . . E . . . D . . . C . . . B . . . A . . . . . . . m << (7 - (p)) | |
61 | * m2 . H . . . G . . . F . . . E . . . D . . . C . . . B . . . A . . (m >> (p)) << 2 | |
62 | * m3 G E C A m1 & 0x80808080 | |
63 | * m4 H F D B m2 & 0x40404040 | |
64 | * m5 G H E F C D A B m3 | m4 | |
65 | * m6 G H E F C D G H A B E F m5 | (m5 >> 20) | |
66 | * m7 G H E F C D G H A B C D E F G H m6 | (m6 >> 10) | |
67 | */ | |
68 | ||
69 | #if 0 | |
70 | #define GetBits(p,o,d) {\ | |
71 | m = sha[o]; \ | |
72 | m1 = m << (7 - (p)); \ | |
73 | m2 = (m >> (p)) << 2; \ | |
74 | m3 = m1 & 0x80808080; \ | |
75 | m4 = m2 & 0x40404040; \ | |
76 | m5 = m3 | m4; \ | |
77 | m6 = m5 | (m5 >> 20); \ | |
78 | d = m6 | (m6 >> 10); \ | |
79 | } | |
80 | #else | |
81 | #define GetBits(p,o,d) {\ | |
82 | m = sha[o]; \ | |
83 | m5 = ((m << (7 - (p))) & 0x80808080) | (((m >> (p)) << 2) & 0x40404040); \ | |
84 | m6 = m5 | (m5 >> 20); \ | |
85 | d = m6 | (m6 >> 10); \ | |
86 | } | |
87 | #endif | |
88 | ||
89 | void | |
90 | shadowUpdatePlanar4(ScreenPtr pScreen, shadowBufPtr pBuf) | |
91 | { | |
92 | RegionPtr damage = shadowDamage(pBuf); | |
93 | PixmapPtr pShadow = pBuf->pPixmap; | |
94 | int nbox = RegionNumRects(damage); | |
95 | BoxPtr pbox = RegionRects(damage); | |
96 | CARD32 *shaBase, *shaLine, *sha; | |
97 | FbStride shaStride; | |
98 | int scrBase, scrLine, scr; | |
99 | int shaBpp; | |
100 | _X_UNUSED int shaXoff, shaYoff; | |
101 | int x, y, w, h, width; | |
102 | int i; | |
103 | CARD32 *winBase = NULL, *win; | |
104 | CARD32 winSize; | |
105 | int plane; | |
106 | CARD32 m, m5, m6; | |
107 | CARD8 s1, s2, s3, s4; | |
108 | ||
109 | fbGetStipDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, | |
110 | shaYoff); | |
111 | while (nbox--) { | |
112 | x = (pbox->x1) * shaBpp; | |
113 | y = (pbox->y1); | |
114 | w = (pbox->x2 - pbox->x1) * shaBpp; | |
115 | h = pbox->y2 - pbox->y1; | |
116 | ||
117 | w = (w + (x & PL_MASK) + PL_MASK) >> PL_SHIFT; | |
118 | x &= ~PL_MASK; | |
119 | ||
120 | scrLine = (x >> PL_SHIFT); | |
121 | shaLine = shaBase + y * shaStride + (x >> FB_SHIFT); | |
122 | ||
123 | while (h--) { | |
124 | for (plane = 0; plane < 4; plane++) { | |
125 | width = w; | |
126 | scr = scrLine; | |
127 | sha = shaLine; | |
128 | winSize = 0; | |
129 | scrBase = 0; | |
130 | while (width) { | |
131 | /* how much remains in this window */ | |
132 | i = scrBase + winSize - scr; | |
133 | if (i <= 0 || scr < scrBase) { | |
134 | winBase = (CARD32 *) (*pBuf->window) (pScreen, | |
135 | y, | |
136 | (scr << 4) | | |
137 | (plane), | |
138 | SHADOW_WINDOW_WRITE, | |
139 | &winSize, | |
140 | pBuf->closure); | |
141 | if (!winBase) | |
142 | return; | |
143 | winSize >>= 2; | |
144 | scrBase = scr; | |
145 | i = winSize; | |
146 | } | |
147 | win = winBase + (scr - scrBase); | |
148 | if (i > width) | |
149 | i = width; | |
150 | width -= i; | |
151 | scr += i; | |
152 | ||
153 | while (i--) { | |
154 | GetBits(plane, 0, s1); | |
155 | GetBits(plane, 1, s2); | |
156 | GetBits(plane, 2, s3); | |
157 | GetBits(plane, 3, s4); | |
158 | *win++ = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); | |
159 | sha += 4; | |
160 | } | |
161 | } | |
162 | } | |
163 | shaLine += shaStride; | |
164 | y++; | |
165 | } | |
166 | pbox++; | |
167 | } | |
168 | } | |
169 | ||
170 | shadowUpdateProc | |
171 | shadowUpdatePlanar4Weak(void) | |
172 | { | |
173 | return shadowUpdatePlanar4; | |
174 | } | |
175 | ||
176 | shadowUpdateProc | |
177 | shadowUpdatePlanar4x8Weak(void) | |
178 | { | |
179 | return shadowUpdatePlanar4x8; | |
180 | } |