1 /*
2 * Copyright © 1998 Keith Packard
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 Keith Packard not be used in
9 * advertising or publicity pertaining to distribution of the software without
10 * specific, written prior permission. Keith Packard 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 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16 * EVENT SHALL KEITH PACKARD 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 #ifdef HAVE_DIX_CONFIG_H
24 #include <dix-config.h>
25 #endif
26
27 #include "fb.h"
28
29 void
fbSetSpans(DrawablePtr pDrawable,GCPtr pGC,char * src,DDXPointPtr ppt,int * pwidth,int nspans,int fSorted)30 fbSetSpans(DrawablePtr pDrawable,
31 GCPtr pGC,
32 char *src, DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
33 {
34 FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
35 RegionPtr pClip = fbGetCompositeClip(pGC);
36 FbBits *dst, *d, *s;
37 FbStride dstStride;
38 int dstBpp;
39 int dstXoff, dstYoff;
40 BoxPtr pbox;
41 int n;
42 int xoff;
43 int x1, x2;
44
45 fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
46 while (nspans--) {
47 d = dst + (ppt->y + dstYoff) * dstStride;
48 xoff = (int) (((long) src) & (FB_MASK >> 3));
49 s = (FbBits *) (src - xoff);
50 xoff <<= 3;
51 n = RegionNumRects(pClip);
52 pbox = RegionRects(pClip);
53 while (n--) {
54 if (pbox->y1 > ppt->y)
55 break;
56 if (pbox->y2 > ppt->y) {
57 x1 = ppt->x;
58 x2 = x1 + *pwidth;
59 if (pbox->x1 > x1)
60 x1 = pbox->x1;
61 if (pbox->x2 < x2)
62 x2 = pbox->x2;
63 if (x1 < x2)
64 fbBlt((FbBits *) s,
65 0,
66 (x1 - ppt->x) * dstBpp + xoff,
67 d,
68 dstStride,
69 (x1 + dstXoff) * dstBpp,
70 (x2 - x1) * dstBpp,
71 1, pGC->alu, pPriv->pm, dstBpp, FALSE, FALSE);
72 }
73 }
74 src += PixmapBytePad(*pwidth, pDrawable->depth);
75 ppt++;
76 pwidth++;
77 }
78 fbValidateDrawable(pDrawable);
79 fbFinishAccess(pDrawable);
80 }
81