mirror of OpenBSD xenocara tree
github.com/openbsd/xenocara
openbsd
1/*
2 * Copyright © 2004 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_CONFIG_H
24#include <config.h>
25#endif
26#include "Xrenderint.h"
27
28#define NLOCAL 256
29
30void
31XRenderAddTraps (Display *dpy,
32 Picture picture,
33 int xOff,
34 int yOff,
35 _Xconst XTrap *traps,
36 int ntrap)
37{
38 XRenderExtDisplayInfo *info = XRenderFindDisplay (dpy);
39 unsigned long max_req = dpy->bigreq_size ? dpy->bigreq_size : dpy->max_request_size;
40
41 RenderSimpleCheckExtension (dpy, info);
42 LockDisplay(dpy);
43 while (ntrap)
44 {
45 xRenderAddTrapsReq *req;
46 int n;
47 unsigned long len;
48
49 GetReq(RenderAddTraps, req);
50 req->reqType = (CARD8) info->codes->major_opcode;
51 req->renderReqType = X_RenderAddTraps;
52 req->picture = (CARD32) picture;
53 req->xOff = (INT16) xOff;
54 req->yOff = (INT16) yOff;
55 n = ntrap;
56 len = ((unsigned long) n) * (SIZEOF (xTrap) >> 2);
57 if (len > (max_req - req->length)) {
58 n = (int) ((max_req - req->length) / (SIZEOF (xTrap) >> 2));
59 len = ((unsigned long) n) * (SIZEOF (xTrap) >> 2);
60 }
61 SetReqLen (req, len, len);
62 len <<= 2;
63 DataInt32 (dpy, (_Xconst int *) traps, (long) len);
64 ntrap -= n;
65 traps += n;
66 }
67 UnlockDisplay(dpy);
68 SyncHandle();
69}