fbsetsp.c revision 35c4bbdf 
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
29void
30fbSetSpans(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    if (pDrawable->bitsPerPixel != BitsPerPixel(pDrawable->depth)) {
46        fb24_32SetSpans(pDrawable, pGC, src, ppt, pwidth, nspans, fSorted);
47        return;
48    }
49    fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
50    while (nspans--) {
51        d = dst + (ppt->y + dstYoff) * dstStride;
52        xoff = (int) (((long) src) & (FB_MASK >> 3));
53        s = (FbBits *) (src - xoff);
54        xoff <<= 3;
55        n = RegionNumRects(pClip);
56        pbox = RegionRects(pClip);
57        while (n--) {
58            if (pbox->y1 > ppt->y)
59                break;
60            if (pbox->y2 > ppt->y) {
61                x1 = ppt->x;
62                x2 = x1 + *pwidth;
63                if (pbox->x1 > x1)
64                    x1 = pbox->x1;
65                if (pbox->x2 < x2)
66                    x2 = pbox->x2;
67                if (x1 < x2)
68                    fbBlt((FbBits *) s,
69                          0,
70                          (x1 - ppt->x) * dstBpp + xoff,
71                          d,
72                          dstStride,
73                          (x1 + dstXoff) * dstBpp,
74                          (x2 - x1) * dstBpp,
75                          1, pGC->alu, pPriv->pm, dstBpp, FALSE, FALSE);
76            }
77        }
78        src += PixmapBytePad(*pwidth, pDrawable->depth);
79        ppt++;
80        pwidth++;
81    }
82    fbValidateDrawable(pDrawable);
83    fbFinishAccess(pDrawable);
84}
85