9a163b27e5a75ab79a4ec5ac66595bb11e36a5b6
[deb_xorg-server.git] / fb / fbgetsp.c
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
30 fbGetSpans(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 }