70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*
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* Copyright IBM Corporation 1987,1988,1989
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*
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* All Rights Reserved
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for any purpose and without fee is hereby granted,
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* provided that the above copyright notice appear in all copies and that
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* both that copyright notice and this permission notice appear in
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* supporting documentation, and that the name of IBM not be
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* used in advertising or publicity pertaining to distribution of the
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* software without specific, written prior permission.
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*
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* IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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* IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*
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*/
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/* ppc Replicate Area -- A Divide & Conquer Algorithm
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* a "ppc" Helper Function For Stipples And Tiling
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* P. Shupak 1/88
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include "xf4bpp.h"
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void xf4bppReplicateArea( pWin, x, y, planeMask, goalWidth, goalHeight,
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currentHoriz, currentVert)
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WindowPtr pWin; /* GJA */
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register int x, y, planeMask ;
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int goalWidth, goalHeight ;
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int currentHoriz, currentVert ;
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{
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for ( ;
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currentHoriz <= ( goalWidth >> 1 ) ;
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currentHoriz <<= 1 ) {
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xf4bppBitBlt( pWin, GXcopy, planeMask,
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x, y,
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x + currentHoriz, y,
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currentHoriz, currentVert ) ;
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}
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if ( goalWidth - currentHoriz )
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xf4bppBitBlt( pWin, GXcopy, planeMask,
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x, y,
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x + currentHoriz, y,
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goalWidth - currentHoriz, currentVert ) ;
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for ( ;
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currentVert <= ( goalHeight >> 1 ) ;
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currentVert <<= 1 ) {
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xf4bppBitBlt( pWin, GXcopy, planeMask,
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x, y,
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x, y + currentVert,
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goalWidth, currentVert ) ;
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}
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if ( goalHeight - currentVert )
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xf4bppBitBlt( pWin, GXcopy, planeMask,
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x, y,
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x, y + currentVert,
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goalWidth, goalHeight - currentVert ) ;
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return ;
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}
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