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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 | void | |
44 | shadowUpdatePacked(ScreenPtr pScreen, shadowBufPtr pBuf) | |
45 | { | |
46 | RegionPtr damage = shadowDamage(pBuf); | |
47 | PixmapPtr pShadow = pBuf->pPixmap; | |
48 | int nbox = RegionNumRects(damage); | |
49 | BoxPtr pbox = RegionRects(damage); | |
50 | FbBits *shaBase, *shaLine, *sha; | |
51 | FbStride shaStride; | |
52 | int scrBase, scrLine, scr; | |
53 | int shaBpp; | |
54 | _X_UNUSED int shaXoff, shaYoff; | |
55 | int x, y, w, h, width; | |
56 | int i; | |
57 | FbBits *winBase = NULL, *win; | |
58 | CARD32 winSize; | |
59 | ||
60 | fbGetDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, | |
61 | shaYoff); | |
62 | while (nbox--) { | |
63 | x = pbox->x1 * shaBpp; | |
64 | y = pbox->y1; | |
65 | w = (pbox->x2 - pbox->x1) * shaBpp; | |
66 | h = pbox->y2 - pbox->y1; | |
67 | ||
68 | scrLine = (x >> FB_SHIFT); | |
69 | shaLine = shaBase + y * shaStride + (x >> FB_SHIFT); | |
70 | ||
71 | x &= FB_MASK; | |
72 | w = (w + x + FB_MASK) >> FB_SHIFT; | |
73 | ||
74 | while (h--) { | |
75 | winSize = 0; | |
76 | scrBase = 0; | |
77 | width = w; | |
78 | scr = scrLine; | |
79 | sha = shaLine; | |
80 | while (width) { | |
81 | /* how much remains in this window */ | |
82 | i = scrBase + winSize - scr; | |
83 | if (i <= 0 || scr < scrBase) { | |
84 | winBase = (FbBits *) (*pBuf->window) (pScreen, | |
85 | y, | |
86 | scr * sizeof(FbBits), | |
87 | SHADOW_WINDOW_WRITE, | |
88 | &winSize, | |
89 | pBuf->closure); | |
90 | if (!winBase) | |
91 | return; | |
92 | scrBase = scr; | |
93 | winSize /= sizeof(FbBits); | |
94 | i = winSize; | |
95 | } | |
96 | win = winBase + (scr - scrBase); | |
97 | if (i > width) | |
98 | i = width; | |
99 | width -= i; | |
100 | scr += i; | |
101 | memcpy(win, sha, i * sizeof(FbBits)); | |
102 | sha += i; | |
103 | } | |
104 | shaLine += shaStride; | |
105 | y++; | |
106 | } | |
107 | pbox++; | |
108 | } | |
109 | } | |
110 | ||
111 | shadowUpdateProc | |
112 | shadowUpdatePackedWeak(void) | |
113 | { | |
114 | return shadowUpdatePacked; | |
115 | } |