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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 | * Expose 8bpp depth 4 | |
45 | */ | |
46 | ||
47 | /* | |
48 | * 32->8 conversion: | |
49 | * | |
50 | * 7 6 5 4 3 2 1 0 | |
51 | * A B C D E F G H | |
52 | * | |
53 | * 3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 | |
54 | * 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 | |
55 | * m1 D x x x x x x x C x x x x x x x B x x x x x x x A x x x x x x x sha[0] << (7-(p)) | |
56 | * m2 x x x x H x x x x x x x G x x x x x x x F x x x x x x x E x x x sha[1] << (3-(p)) | |
57 | * m3 D C B A m1 & 0x80808080 | |
58 | * m4 H G F E m2 & 0x08080808 | |
59 | * m5 D H C G B F A E m3 | m4 | |
60 | * m6 D H C G B F m5 >> 9 | |
61 | * m7 D H C D G H B C F G A B E F m5 | m6 | |
62 | * m8 D H C D G H m7 >> 18 | |
63 | * m9 D H C D G H B C D F G H A B C D E F G H m7 | m8 | |
64 | */ | |
65 | ||
66 | #define PL_SHIFT 8 | |
67 | #define PL_UNIT (1 << PL_SHIFT) | |
68 | #define PL_MASK (PL_UNIT - 1) | |
69 | ||
70 | #if 0 | |
71 | #define GetBits(p,o,d) { \ | |
72 | CARD32 m1,m2,m3,m4,m5,m6,m7,m8; \ | |
73 | m1 = sha[o] << (7 - (p)); \ | |
74 | m2 = sha[(o)+1] << (3 - (p)); \ | |
75 | m3 = m1 & 0x80808080; \ | |
76 | m4 = m2 & 0x08080808; \ | |
77 | m5 = m3 | m4; \ | |
78 | m6 = m5 >> 9; \ | |
79 | m7 = m5 | m6; \ | |
80 | m8 = m7 >> 18; \ | |
81 | d = m7 | m8; \ | |
82 | } | |
83 | #else | |
84 | #define GetBits(p,o,d) { \ | |
85 | CARD32 m5,m7; \ | |
86 | m5 = ((sha[o] << (7 - (p))) & 0x80808080) | ((sha[(o)+1] << (3 - (p))) & 0x08080808); \ | |
87 | m7 = m5 | (m5 >> 9); \ | |
88 | d = m7 | (m7 >> 18); \ | |
89 | } | |
90 | #endif | |
91 | ||
92 | void | |
93 | shadowUpdatePlanar4x8(ScreenPtr pScreen, shadowBufPtr pBuf) | |
94 | { | |
95 | RegionPtr damage = shadowDamage(pBuf); | |
96 | PixmapPtr pShadow = pBuf->pPixmap; | |
97 | int nbox = RegionNumRects(damage); | |
98 | BoxPtr pbox = RegionRects(damage); | |
99 | CARD32 *shaBase, *shaLine, *sha; | |
100 | CARD8 s1, s2, s3, s4; | |
101 | FbStride shaStride; | |
102 | int scrBase, scrLine, scr; | |
103 | int shaBpp; | |
104 | _X_UNUSED int shaXoff, shaYoff; | |
105 | int x, y, w, h, width; | |
106 | int i; | |
107 | CARD32 *winBase = NULL, *win; | |
108 | CARD32 winSize; | |
109 | int plane; | |
110 | ||
111 | fbGetStipDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, | |
112 | shaYoff); | |
113 | while (nbox--) { | |
114 | x = pbox->x1 * shaBpp; | |
115 | y = pbox->y1; | |
116 | w = (pbox->x2 - pbox->x1) * shaBpp; | |
117 | h = pbox->y2 - pbox->y1; | |
118 | ||
119 | w = (w + (x & PL_MASK) + PL_MASK) >> PL_SHIFT; | |
120 | x &= ~PL_MASK; | |
121 | ||
122 | scrLine = (x >> PL_SHIFT); | |
123 | shaLine = shaBase + y * shaStride + (x >> FB_SHIFT); | |
124 | ||
125 | while (h--) { | |
126 | for (plane = 0; plane < 4; plane++) { | |
127 | width = w; | |
128 | scr = scrLine; | |
129 | sha = shaLine; | |
130 | winSize = 0; | |
131 | scrBase = 0; | |
132 | while (width) { | |
133 | /* how much remains in this window */ | |
134 | i = scrBase + winSize - scr; | |
135 | if (i <= 0 || scr < scrBase) { | |
136 | winBase = (CARD32 *) (*pBuf->window) (pScreen, | |
137 | y, | |
138 | (scr << 4) | | |
139 | (plane), | |
140 | SHADOW_WINDOW_WRITE, | |
141 | &winSize, | |
142 | pBuf->closure); | |
143 | if (!winBase) | |
144 | return; | |
145 | winSize >>= 2; | |
146 | scrBase = scr; | |
147 | i = winSize; | |
148 | } | |
149 | win = winBase + (scr - scrBase); | |
150 | if (i > width) | |
151 | i = width; | |
152 | width -= i; | |
153 | scr += i; | |
154 | ||
155 | while (i--) { | |
156 | GetBits(plane, 0, s1); | |
157 | GetBits(plane, 2, s2); | |
158 | GetBits(plane, 4, s3); | |
159 | GetBits(plane, 6, s4); | |
160 | *win++ = s1 | (s2 << 8) | (s3 << 16) | (s4 << 24); | |
161 | sha += 8; | |
162 | } | |
163 | } | |
164 | } | |
165 | shaLine += shaStride; | |
166 | y++; | |
167 | } | |
168 | pbox++; | |
169 | } | |
170 | } |