101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/emulOpStip.c,v 1.2 1998/07/25 16:59:27 dawes Exp $ */
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/*
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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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/* $XConsortium: emulOpStip.c /main/4 1996/02/21 17:56:12 kaleb $ */
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/* ppc OpaqueStipple
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*
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* Based on the private stipple; does a foreground, and then an inverted
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* on the background
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*
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*/
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#include "xf4bpp.h"
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#include "OScompiler.h"
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#include "mfbmap.h"
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#include "mfb.h"
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void
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xf4bppOpaqueStipple( pWin, pStipple, fg, bg, alu, planes, x, y, w, h, xSrc, ySrc )
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WindowPtr pWin; /* GJA */
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register PixmapPtr pStipple ;
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unsigned long int fg ;
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unsigned long int bg ;
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int alu ;
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unsigned long int planes ;
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register int x, y, w, h ;
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int xSrc, ySrc ;
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{
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/* DO BACKGROUND */
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switch ( alu ) {
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/* Easy Cases -- i.e. Final Result Doesn't Depend On Initial Dest. */
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case GXclear: /* 0x0 Zero 0 */
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case GXset: /* 0xf 1 */
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/* Foreground And Background Are Both The Same !! */
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xf4bppFillSolid( pWin, bg, alu, planes, x, y, w, h ) ;
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case GXnoop: /* 0x5 dst */
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break ;
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case GXcopy: /* 0x3 src */
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case GXcopyInverted: /* 0xc NOT src */
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{ /* Special Case Code */
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register int vtarget, htarget ;
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/* We Can Draw Just One Copy Then Blit The Rest !! */
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/* Draw The One Copy */
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htarget = MIN( w, pStipple->drawable.width ) ;
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vtarget = MIN( h, pStipple->drawable.height ) ;
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/* First The Background */
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xf4bppFillSolid( pWin, bg, alu, planes, x, y,
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htarget, vtarget ) ;
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/* Then The Foreground */
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xf4bppFillStipple( pWin, pStipple, fg, alu, planes,
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x, y, htarget, vtarget,
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xSrc, ySrc ) ;
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/* Here We Double The Size Of The BLIT Each Iteration */
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xf4bppReplicateArea(pWin, x, y, planes, w, h, htarget, vtarget);
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}
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break ;
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default:
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/* Hard Cases -- i.e. Final Result DOES Depend On Initial Dest. */
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{ /* Do The Background */
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register int i, j;
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register PixmapPtr pInvPixmap = xf4bppCopyPixmap( pStipple ) ;
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register unsigned char *data = pInvPixmap->devPrivate.ptr ;
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/* INVERT PIXMAP OK, jeff, this is for you */
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for ( i = pInvPixmap->drawable.height ; i-- ; )
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for ( j = pInvPixmap->devKind ; j-- ; data++ )
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*data = ~ ( *data ) ;
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xf4bppFillStipple( pWin, pInvPixmap, bg, alu, planes, x, y, w, h, xSrc, ySrc );
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mfbDestroyPixmap( pInvPixmap ) ;
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/* DO FOREGROUND */
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xf4bppFillStipple( pWin, pStipple, fg, alu, planes, x, y, w, h, xSrc, ySrc );
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}
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break ;
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}
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return;
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}
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