1/*
2 * Copyright 2001 Red Hat Inc., Durham, North Carolina.
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation on the rights to use, copy, modify, merge,
10 * publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so,
12 * subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
22 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
23 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * SOFTWARE.
26 */
27
28/*
29 * Authors:
30 *   Kevin E. Martin <kem@redhat.com>
31 *   David H. Dawes <dawes@xfree86.org>
32 *
33 */
34
35#ifdef HAVE_DMX_CONFIG_H
36#include <dmx-config.h>
37#endif
38
39#include "dmx.h"
40#include "dmxsync.h"
41#include "dmxshadow.h"
42
43/** \file
44 * This file provides support for the shadow frame buffer. */
45
46/** Update the screen from the shadow frame buffer. */
47void dmxShadowUpdateProc(ScreenPtr pScreen, shadowBufPtr pBuf)
48{
49    RegionPtr      damage = &pBuf->damage;
50    int            nbox = RegionNumRects(damage);
51    BoxPtr         pbox = RegionRects(damage);
52    DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
53
54    if (!dmxScreen->beDisplay)
55	return;
56
57    while (nbox--) {
58	XPutImage(dmxScreen->beDisplay,
59		  dmxScreen->scrnWin,
60		  dmxScreen->shadowGC,
61		  dmxScreen->shadowFBImage,
62		  pbox->x1, pbox->y1,
63		  pbox->x1, pbox->y1,
64		  pbox->x2 - pbox->x1,
65		  pbox->y2 - pbox->y1);
66
67	pbox++;
68    }
69
70    dmxSync(dmxScreen, FALSE);
71}
72