1/*
2 * Copyright 1999 Mark Vojkovich
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#include "nv_include.h"
24#include "nv_type.h"
25#include "shadowfb.h"
26#include "servermd.h"
27
28#define MIN(a, b) (((a) < (b)) ? (a) : (b))
29#define MAX(a, b) (((a) > (b)) ? (a) : (b))
30
31void
32NVRefreshArea(ScrnInfoPtr pScrn, int num, BoxPtr pbox)
33{
34	NVPtr pNv = NVPTR(pScrn);
35	int x1, y1, x2, y2, width, height, cpp, FBPitch;
36	unsigned char *src, *dst;
37
38	cpp = pScrn->bitsPerPixel >> 3;
39	FBPitch = pScrn->displayWidth * cpp;
40
41	nouveau_bo_map(pNv->scanout, NOUVEAU_BO_WR, pNv->client);
42	while(num--) {
43		x1 = MAX(pbox->x1, 0);
44		y1 = MAX(pbox->y1, 0);
45		x2 = MIN(pbox->x2, pScrn->virtualX);
46		y2 = MIN(pbox->y2, pScrn->virtualY);
47		width = (x2 - x1) * cpp;
48		height = y2 - y1;
49
50		if (width > 0 && height > 0) {
51			src = pNv->ShadowPtr + (y1 * pNv->ShadowPitch) + (x1 * cpp);
52			dst = pNv->scanout->map + (y1 * FBPitch) + (x1 * cpp);
53
54			while(height--) {
55				memcpy(dst, src, width);
56				dst += FBPitch;
57				src += pNv->ShadowPitch;
58			}
59		}
60
61		pbox++;
62	}
63}
64