1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun *
3*4882a593Smuzhiyun * Copyright © 2000 Keith Packard
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Permission to use, copy, modify, distribute, and sell this software and its
6*4882a593Smuzhiyun * documentation for any purpose is hereby granted without fee, provided that
7*4882a593Smuzhiyun * the above copyright notice appear in all copies and that both that
8*4882a593Smuzhiyun * copyright notice and this permission notice appear in supporting
9*4882a593Smuzhiyun * documentation, and that the name of Keith Packard not be used in
10*4882a593Smuzhiyun * advertising or publicity pertaining to distribution of the software without
11*4882a593Smuzhiyun * specific, written prior permission. Keith Packard makes no
12*4882a593Smuzhiyun * representations about the suitability of this software for any purpose. It
13*4882a593Smuzhiyun * is provided "as is" without express or implied warranty.
14*4882a593Smuzhiyun *
15*4882a593Smuzhiyun * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16*4882a593Smuzhiyun * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17*4882a593Smuzhiyun * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18*4882a593Smuzhiyun * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19*4882a593Smuzhiyun * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20*4882a593Smuzhiyun * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
21*4882a593Smuzhiyun * PERFORMANCE OF THIS SOFTWARE.
22*4882a593Smuzhiyun */
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #ifdef HAVE_DIX_CONFIG_H
25*4882a593Smuzhiyun #include <dix-config.h>
26*4882a593Smuzhiyun #endif
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun #include <stdlib.h>
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #include <X11/X.h>
31*4882a593Smuzhiyun #include "scrnintstr.h"
32*4882a593Smuzhiyun #include "windowstr.h"
33*4882a593Smuzhiyun #include <X11/fonts/font.h>
34*4882a593Smuzhiyun #include "dixfontstr.h"
35*4882a593Smuzhiyun #include <X11/fonts/fontstruct.h>
36*4882a593Smuzhiyun #include "mi.h"
37*4882a593Smuzhiyun #include "regionstr.h"
38*4882a593Smuzhiyun #include "globals.h"
39*4882a593Smuzhiyun #include "gcstruct.h"
40*4882a593Smuzhiyun #include "shadow.h"
41*4882a593Smuzhiyun #include "fb.h"
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun void
shadowUpdatePacked(ScreenPtr pScreen,shadowBufPtr pBuf)44*4882a593Smuzhiyun shadowUpdatePacked(ScreenPtr pScreen, shadowBufPtr pBuf)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun RegionPtr damage = DamageRegion(pBuf->pDamage);
47*4882a593Smuzhiyun PixmapPtr pShadow = pBuf->pPixmap;
48*4882a593Smuzhiyun int nbox = RegionNumRects(damage);
49*4882a593Smuzhiyun BoxPtr pbox = RegionRects(damage);
50*4882a593Smuzhiyun FbBits *shaBase, *shaLine, *sha;
51*4882a593Smuzhiyun FbStride shaStride;
52*4882a593Smuzhiyun int scrBase, scrLine, scr;
53*4882a593Smuzhiyun int shaBpp;
54*4882a593Smuzhiyun _X_UNUSED int shaXoff, shaYoff;
55*4882a593Smuzhiyun int x, y, w, h, width;
56*4882a593Smuzhiyun int i;
57*4882a593Smuzhiyun FbBits *winBase = NULL, *win;
58*4882a593Smuzhiyun CARD32 winSize;
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun fbGetDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff,
61*4882a593Smuzhiyun shaYoff);
62*4882a593Smuzhiyun while (nbox--) {
63*4882a593Smuzhiyun x = pbox->x1 * shaBpp;
64*4882a593Smuzhiyun y = pbox->y1;
65*4882a593Smuzhiyun w = (pbox->x2 - pbox->x1) * shaBpp;
66*4882a593Smuzhiyun h = pbox->y2 - pbox->y1;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun scrLine = (x >> FB_SHIFT);
69*4882a593Smuzhiyun shaLine = shaBase + y * shaStride + (x >> FB_SHIFT);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun x &= FB_MASK;
72*4882a593Smuzhiyun w = (w + x + FB_MASK) >> FB_SHIFT;
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun while (h--) {
75*4882a593Smuzhiyun winSize = 0;
76*4882a593Smuzhiyun scrBase = 0;
77*4882a593Smuzhiyun width = w;
78*4882a593Smuzhiyun scr = scrLine;
79*4882a593Smuzhiyun sha = shaLine;
80*4882a593Smuzhiyun while (width) {
81*4882a593Smuzhiyun /* how much remains in this window */
82*4882a593Smuzhiyun i = scrBase + winSize - scr;
83*4882a593Smuzhiyun if (i <= 0 || scr < scrBase) {
84*4882a593Smuzhiyun winBase = (FbBits *) (*pBuf->window) (pScreen,
85*4882a593Smuzhiyun y,
86*4882a593Smuzhiyun scr * sizeof(FbBits),
87*4882a593Smuzhiyun SHADOW_WINDOW_WRITE,
88*4882a593Smuzhiyun &winSize,
89*4882a593Smuzhiyun pBuf->closure);
90*4882a593Smuzhiyun if (!winBase)
91*4882a593Smuzhiyun return;
92*4882a593Smuzhiyun scrBase = scr;
93*4882a593Smuzhiyun winSize /= sizeof(FbBits);
94*4882a593Smuzhiyun i = winSize;
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun win = winBase + (scr - scrBase);
97*4882a593Smuzhiyun if (i > width)
98*4882a593Smuzhiyun i = width;
99*4882a593Smuzhiyun width -= i;
100*4882a593Smuzhiyun scr += i;
101*4882a593Smuzhiyun memcpy(win, sha, i * sizeof(FbBits));
102*4882a593Smuzhiyun sha += i;
103*4882a593Smuzhiyun }
104*4882a593Smuzhiyun shaLine += shaStride;
105*4882a593Smuzhiyun y++;
106*4882a593Smuzhiyun }
107*4882a593Smuzhiyun pbox++;
108*4882a593Smuzhiyun }
109*4882a593Smuzhiyun }
110