fbgetsp.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
30fbGetSpans(DrawablePtr pDrawable,
31           int wMax,
32           DDXPointPtr ppt, int *pwidth, int nspans, char *pchardstStart)
33{
34    FbBits *src, *dst;
35    FbStride srcStride;
36    int srcBpp;
37    int srcXoff, srcYoff;
38    int xoff;
39
40    /*
41     * XFree86 DDX empties the root borderClip when the VT is
42     * switched away; this checks for that case
43     */
44    if (!fbDrawableEnabled(pDrawable))
45        return;
46
47    if (pDrawable->bitsPerPixel != BitsPerPixel(pDrawable->depth)) {
48        fb24_32GetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart);
49        return;
50    }
51
52    fbGetDrawable(pDrawable, src, srcStride, srcBpp, srcXoff, srcYoff);
53
54    while (nspans--) {
55        xoff = (int) (((long) pchardstStart) & (FB_MASK >> 3));
56        dst = (FbBits *) (pchardstStart - xoff);
57        xoff <<= 3;
58        fbBlt(src + (ppt->y + srcYoff) * srcStride, srcStride,
59              (ppt->x + srcXoff) * srcBpp,
60              dst,
61              1,
62              xoff,
63              *pwidth * srcBpp, 1, GXcopy, FB_ALLONES, srcBpp, FALSE, FALSE);
64        pchardstStart += PixmapBytePad(*pwidth, pDrawable->depth);
65        ppt++;
66        pwidth++;
67    }
68
69    fbFinishAccess(pDrawable);
70}
71