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/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/emulRepAre.c,v 1.2 1998/07/25 16:59:27 dawes Exp $ */
/*
* 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 ;
}
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