322 lines
11 KiB
C
322 lines
11 KiB
C
/* $XFree86: xc/programs/Xserver/hw/xfree86/xf4bpp/ppcSetSp.c,v 1.2 1998/07/25 16:59:41 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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/***********************************************************
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Copyright (c) 1987 X Consortium
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of the X Consortium shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from the X Consortium.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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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 Digital 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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DIGITAL 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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DIGITAL 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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/* $XConsortium: ppcSetSp.c /main/5 1996/02/21 17:58:32 kaleb $ */
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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 <stdlib.h>
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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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#include "servermd.h"
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/* SetScanline -- copies the bits from psrc to the drawable starting at
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* (xStart, y) and continuing to (xEnd, y). xOrigin tells us where psrc
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* starts on the scanline. (I.e., if this scanline passes through multiple
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* boxes, we may not want to start grabbing bits at psrc but at some offset
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* further on.)
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*/
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static void
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ppcSetScanline
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(
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register int pixCount, /* width of scanline in bits */
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register char *psrc,
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register unsigned char *pdst, /* where to put the bits */
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register int pm, /* plane mask */
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const int alu /* raster op */
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)
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{
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register int npm = ~pm ; /* inverted plane mask */
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register char tmpx ;
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pm &= 0x0F; npm &= 0x0F; /* GJA */
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switch ( alu ) {
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case GXclear: /* 0x0 Zero 0 */
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while ( pixCount-- )
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*pdst++ &= npm ;
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break ;
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case GXand: /* 0x1 src AND dst */
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while ( pixCount-- )
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*pdst++ &= *psrc++ | npm ;
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break ;
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case GXandReverse: /* 0x2 src AND NOT dst */
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for ( ; pixCount-- ; pdst++, psrc++ ) {
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tmpx = *pdst;
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*pdst = ( tmpx & npm ) | ( pm & *psrc & ~tmpx ) ;
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}
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break ;
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case GXcopy: /* 0x3 src */
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for ( ; pixCount-- ; pdst++, psrc++ )
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*pdst = ( *pdst & npm ) | ( pm & *psrc ) ;
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break ;
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case GXandInverted: /* 0x4 NOT src AND dst */
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while ( pixCount-- )
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*pdst++ &= npm | ~*psrc++ ;
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break ;
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case GXnoop: /* 0x5 dst */
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break ;
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case GXxor: /* 0x6 src XOR dst */
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while ( pixCount-- )
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*pdst++ ^= pm & *psrc++ ;
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break ;
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case GXor: /* 0x7 src OR dst */
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while ( pixCount-- )
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*pdst++ |= *psrc++ & pm ;
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break ;
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case GXnor: /* 0x8 NOT src AND NOT dst */
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for ( ; pixCount-- ; pdst++, psrc++ ) {
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tmpx = *pdst;
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*pdst = ( tmpx & npm ) | ( pm & ~( tmpx | *psrc ) ) ;
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}
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break ;
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case GXequiv: /* 0x9 NOT src XOR dst */
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while ( pixCount-- )
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*pdst++ ^= pm & ~ *psrc++ ;
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break ;
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case GXorReverse: /* 0xb src OR NOT dst */
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for ( ; pixCount-- ; pdst++, psrc++ ) {
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tmpx = *pdst;
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*pdst = ( tmpx & npm ) | ( pm & ( *psrc | ~tmpx ) ) ;
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}
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break ;
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case GXinvert: /* 0xa NOT dst */
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while ( pixCount-- )
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*pdst++ ^= pm ;
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break ;
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case GXcopyInverted: /* 0xc NOT src */
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for ( ; pixCount-- ; pdst++, psrc++ )
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*pdst = ( *pdst & npm ) | ( pm & ~ *psrc ) ;
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break ;
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case GXorInverted: /* 0xd NOT src OR dst */
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while ( pixCount-- )
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*pdst++ |= pm & ~ *psrc++ ;
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break ;
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case GXnand: /* 0xe NOT src OR NOT dst */
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for ( ; pixCount-- ; pdst++, psrc++ ) {
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tmpx = *pdst;
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*pdst = ( tmpx & npm ) | ( pm & ~( tmpx & *psrc ) ) ;
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}
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break ;
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case GXset: /* 0xf 1 */
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while ( pixCount-- )
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*pdst++ |= pm ;
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break ;
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default:
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ErrorF( "ppcSetScanLine: bad alu value == 0x%02X\n", alu ) ;
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break ;
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}
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return ;
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}
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/* SetSpans -- for each span copy pwidth[i] bits from psrc to pDrawable at
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* ppt[i] using the raster op from the GC. If fSorted is TRUE, the scanlines
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* are in increasing Y order.
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* Source bit lines are server scanline padded so that they always begin
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* on a word boundary.
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*/
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void
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xf4bppSetSpans( pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted )
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register DrawablePtr pDrawable ;
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GCPtr pGC ;
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char *psrc ;
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register DDXPointPtr ppt ;
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int *pwidth ;
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int nspans ;
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int fSorted ;
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{
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unsigned char *pdstBase = NULL; /* start of dst bitmap */
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int widthDst = 0; /* width of bitmap in words */
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register BoxPtr pbox, pboxLast, pboxTest ;
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register DDXPointPtr pptLast ;
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RegionPtr prgnDst ;
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register int width ;
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int xStart, xEnd ;
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int yMax ;
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int alu ;
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int pm ;
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/* allow for 1-deep windows on nfb machines (eg apa8, aed) */
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if ( ( pDrawable->depth == 1 ) && ( pDrawable->type == DRAWABLE_PIXMAP ) ) {
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mfbSetSpans( pDrawable, pGC, psrc, ppt, pwidth, nspans, fSorted ) ;
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return ;
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}
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if ( !( pm = pGC->planemask & ~( (~0) << pDrawable->depth ) )
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|| ( ( alu = pGC->alu ) == GXnoop ) )
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return ;
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prgnDst = pGC->pCompositeClip ;
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if ( ! REGION_NUM_RECTS(prgnDst))
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return ;
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pboxLast = ( pbox = REGION_RECTS(prgnDst) ) + REGION_NUM_RECTS(prgnDst);
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pptLast = ppt + nspans ;
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if ( pDrawable->type == DRAWABLE_WINDOW ) {
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yMax = (int) pDrawable->height + pDrawable->y ;
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}
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else {
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pdstBase = (unsigned char *) ( (PixmapPtr) pDrawable )->devPrivate.ptr ;
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widthDst = (int) ( (PixmapPtr) pDrawable )->devKind ;
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yMax = pDrawable->height ;
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}
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if ( fSorted ) {
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/* scan lines sorted in ascending order. Because they are sorted, we
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* don't have to check each scanline against each clip box. We can be
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* sure that this scanline only has to be clipped to boxes at or after the
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* beginning of this y-band
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*/
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for ( pboxTest = pbox ;
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( ppt < pptLast ) && ( ppt->y < yMax ) ;
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ppt++, pwidth++,
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psrc += PixmapBytePad( width, pDrawable->depth ) ) {
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width = *pwidth ;
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for ( pbox = pboxTest ;
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pbox < pboxLast ;
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pbox++ ) {
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if ( pbox->y2 <= ppt->y ) {
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/* clip box is before scanline */
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pboxTest = pbox + 1 ;
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}
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else if ( ( pbox->y1 > ppt->y )
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|| ( pbox->x1 > ppt->x + width ) )
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break ; /* scanline before clip box or left of clip box */
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else if ( pbox->x2 > ppt->x ) {
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/* some of the scanline is in the current clip box */
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xStart = MAX( pbox->x1, ppt->x ) ;
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xEnd = MIN( ppt->x + width, pbox->x2 ) ;
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if ( pDrawable->type == DRAWABLE_PIXMAP )
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ppcSetScanline( xEnd - xStart,
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psrc + ( xStart - ppt->x ),
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pdstBase + xStart
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+ ( ppt->y * widthDst ),
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pm, alu ) ;
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else
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xf4bppDrawColorImage( (WindowPtr)pDrawable,
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xStart, ppt->y, xEnd - xStart, 1,
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(unsigned char *)psrc + ( xStart - ppt->x ),
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xEnd - xStart, alu, pm ) ;
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if ( ppt->x + width <= pbox->x2 )
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break ; /* End of the line, as it were */
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}
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}
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/* We've tried this line against every box ; it must be outside them
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* all. move on to the next point */
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}
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}
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else {
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/* scan lines not sorted. We must clip each line against all the boxes */
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for ( ;
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ppt < pptLast ;
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ppt++, pwidth++,
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psrc += PixmapBytePad( width, pDrawable->depth ) ) {
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width = *pwidth ;
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if ( ppt->y >= 0 && ppt->y < yMax ) {
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for ( pbox = REGION_RECTS(prgnDst) ; pbox < pboxLast ; pbox++ ) {
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if ( pbox->y1 > ppt->y )
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break ; /* rest of clip region is above this scanline */
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else if ( ( pbox->y2 > ppt->y )
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&& ( pbox->x1 <= ppt->x + width )
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&& ( pbox->x2 > ppt->x ) ) {
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xStart = MAX( pbox->x1, ppt->x ) ;
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xEnd = MIN( pbox->x2, ppt->x + width ) ;
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if ( pDrawable->type == DRAWABLE_PIXMAP )
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ppcSetScanline( xEnd - xStart,
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psrc + ( xStart - ppt->x ),
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/* ^ GJA */
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( ( pdstBase
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+ ( ppt->y * widthDst ) )
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+ xStart ),
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pm, alu ) ;
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else /* pDrawable->type == DRAWABLE_WINDOW */
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xf4bppDrawColorImage( (WindowPtr)pDrawable,
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xStart, ppt->y, xEnd - xStart, 1,
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(unsigned char *)psrc + ( xStart - ppt->x ),
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/* GJA ^ */
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xEnd - xStart, alu, pm ) ;
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}
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}
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}
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}
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}
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return ;
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}
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