summaryrefslogtreecommitdiff
path: root/hw/xfree86/xf4bpp/emulRepAre.c
blob: 6f2096e97ce1129abba9974d0825683ae27242b1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
/* $XFree86$ */
/*
 * Copyright IBM Corporation 1987,1988,1989
 *
 * All Rights Reserved
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation for any purpose and without fee is hereby granted,
 * provided that the above copyright notice appear in all copies and that 
 * both that copyright notice and this permission notice appear in
 * supporting documentation, and that the name of IBM not be
 * used in advertising or publicity pertaining to distribution of the
 * software without specific, written prior permission.
 *
 * IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
 * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
 * IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
 * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
 * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 *
*/
/* $XConsortium: emulRepAre.c /main/5 1996/02/21 17:56:16 kaleb $ */

/* ppc Replicate Area -- A Divide & Conquer Algorithm
 * a "ppc" Helper Function For Stipples And Tiling
 * P. Shupak 1/88
 */

#include "xf4bpp.h"

void xf4bppReplicateArea( pWin, x, y, planeMask, goalWidth, goalHeight,
			currentHoriz, currentVert)
WindowPtr pWin; /* GJA */
register int x, y, planeMask ;
int goalWidth, goalHeight ;
int currentHoriz, currentVert ;
{
	for ( ;
	      currentHoriz <= ( goalWidth >> 1 ) ;
	      currentHoriz <<= 1 ) {
		xf4bppBitBlt( pWin, GXcopy, planeMask,
			x, y,
			x + currentHoriz, y,
			currentHoriz, currentVert ) ;
	}
	if ( goalWidth - currentHoriz )
		xf4bppBitBlt( pWin, GXcopy, planeMask,
			x, y,
			x + currentHoriz, y,
			goalWidth - currentHoriz, currentVert ) ;
	for ( ;
	      currentVert <= ( goalHeight >> 1 ) ;
	      currentVert <<= 1 ) {
		xf4bppBitBlt( pWin, GXcopy, planeMask,
			x, y,
			x, y + currentVert,
			goalWidth, currentVert ) ;
	}
	if ( goalHeight - currentVert )
		xf4bppBitBlt( pWin, GXcopy, planeMask,
			x, y,
			x, y + currentVert,
			goalWidth, goalHeight - currentVert ) ;
return ;
}