471 lines
12 KiB
C
471 lines
12 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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/***********************************************************
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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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#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 "mfbmap.h"
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#define PSZ 8
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#include "mfb.h"
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#include "mergerop.h"
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#include "mi.h"
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#include "pixmapstr.h"
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#include "scrnintstr.h"
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/*
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* Graft in the DoBitblt from cfb. It does everything correctly.
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*/
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static void
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vga16DoBitblt
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(
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DrawablePtr pSrc,
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DrawablePtr pDst,
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int alu,
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RegionPtr prgnDst,
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DDXPointPtr pptSrc,
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unsigned long planemask
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)
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{
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int widthSrc, widthDst; /* add to get to same position in next line */
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BoxPtr pbox;
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int nbox;
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BoxPtr pboxTmp, pboxNext, pboxBase, pboxNew1, pboxNew2;
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/* temporaries for shuffling rectangles */
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DDXPointPtr pptTmp, pptNew1, pptNew2;
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/* shuffling boxes entails shuffling the
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source points too */
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int w, h;
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int careful;
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widthSrc = mfbGetPixelWidth(pSrc);
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widthDst = mfbGetPixelWidth(pDst);
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/* XXX we have to err on the side of safety when both are windows,
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* because we don't know if IncludeInferiors is being used.
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*/
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careful = ((pSrc == pDst) ||
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((pSrc->type == DRAWABLE_WINDOW) &&
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(pDst->type == DRAWABLE_WINDOW)));
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pbox = REGION_RECTS(prgnDst);
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nbox = REGION_NUM_RECTS(prgnDst);
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pboxNew1 = NULL;
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pptNew1 = NULL;
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pboxNew2 = NULL;
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pptNew2 = NULL;
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if (careful && (pptSrc->y < pbox->y1))
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{
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/* walk source botttom to top */
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widthSrc = -widthSrc;
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widthDst = -widthDst;
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if (nbox > 1)
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{
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/* keep ordering in each band, reverse order of bands */
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pboxNew1 = (BoxPtr)ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
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if(!pboxNew1)
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return;
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pptNew1 = (DDXPointPtr)ALLOCATE_LOCAL(sizeof(DDXPointRec) * nbox);
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if(!pptNew1)
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{
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DEALLOCATE_LOCAL(pboxNew1);
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return;
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}
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pboxBase = pboxNext = pbox+nbox-1;
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while (pboxBase >= pbox)
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{
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while ((pboxNext >= pbox) &&
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(pboxBase->y1 == pboxNext->y1))
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pboxNext--;
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pboxTmp = pboxNext+1;
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pptTmp = pptSrc + (pboxTmp - pbox);
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while (pboxTmp <= pboxBase)
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{
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*pboxNew1++ = *pboxTmp++;
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*pptNew1++ = *pptTmp++;
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}
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pboxBase = pboxNext;
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}
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pboxNew1 -= nbox;
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pbox = pboxNew1;
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pptNew1 -= nbox;
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pptSrc = pptNew1;
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}
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}
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if (careful && (pptSrc->x < pbox->x1))
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{
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if (nbox > 1)
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{
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/* reverse order of rects in each band */
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pboxNew2 = (BoxPtr)ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
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pptNew2 = (DDXPointPtr)ALLOCATE_LOCAL(sizeof(DDXPointRec) * nbox);
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if(!pboxNew2 || !pptNew2)
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{
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if (pptNew2) DEALLOCATE_LOCAL(pptNew2);
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if (pboxNew2) DEALLOCATE_LOCAL(pboxNew2);
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if (pboxNew1)
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{
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DEALLOCATE_LOCAL(pptNew1);
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DEALLOCATE_LOCAL(pboxNew1);
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}
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return;
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}
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pboxBase = pboxNext = pbox;
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while (pboxBase < pbox+nbox)
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{
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while ((pboxNext < pbox+nbox) &&
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(pboxNext->y1 == pboxBase->y1))
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pboxNext++;
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pboxTmp = pboxNext;
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pptTmp = pptSrc + (pboxTmp - pbox);
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while (pboxTmp != pboxBase)
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{
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*pboxNew2++ = *--pboxTmp;
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*pptNew2++ = *--pptTmp;
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}
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pboxBase = pboxNext;
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}
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pboxNew2 -= nbox;
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pbox = pboxNew2;
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pptNew2 -= nbox;
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pptSrc = pptNew2;
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}
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}
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while(nbox--)
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{
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w = pbox->x2 - pbox->x1;
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h = pbox->y2 - pbox->y1;
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if( pSrc->type == DRAWABLE_WINDOW )
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xf4bppBitBlt( (WindowPtr)pDst, alu, planemask,
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pptSrc->x, /* x0 */
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pptSrc->y, /* y0 */
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pbox->x1, /* x1 */
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pbox->y1, /* y1 */
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w, h ); /* w, h */
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else /* DRAWABLE_PIXMAP */
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xf4bppDrawColorImage( (WindowPtr)pDst,
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pbox->x1, pbox->y1,
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w,
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h,
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((unsigned char *)((PixmapPtr)pSrc)->devPrivate.ptr
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+ pptSrc->x + (pptSrc->y*((PixmapPtr)pSrc)->devKind)),
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((PixmapPtr)pSrc)->devKind,
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alu, planemask ) ;
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pbox++;
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pptSrc++;
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}
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if (pboxNew2)
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{
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DEALLOCATE_LOCAL(pptNew2);
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DEALLOCATE_LOCAL(pboxNew2);
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}
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if (pboxNew1)
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{
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DEALLOCATE_LOCAL(pptNew1);
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DEALLOCATE_LOCAL(pboxNew1);
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}
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}
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/*
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* Graft in the CopyArea from mfb/cfb. It does everything correctly.
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*/
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RegionPtr
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xf4bppCopyArea(pSrcDrawable, pDstDrawable,
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pGC, srcx, srcy, width, height, dstx, dsty)
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register DrawablePtr pSrcDrawable;
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register DrawablePtr pDstDrawable;
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register GC *pGC;
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int srcx, srcy;
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int width, height;
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int dstx, dsty;
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{
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RegionPtr prgnSrcClip = NULL; /* may be a new region, or just a copy */
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Bool freeSrcClip = FALSE;
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RegionPtr prgnExposed;
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RegionRec rgnDst;
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DDXPointPtr pptSrc;
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register DDXPointPtr ppt;
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register BoxPtr pbox;
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int i;
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register int dx;
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register int dy;
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xRectangle origSource;
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DDXPointRec origDest;
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int numRects;
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BoxRec fastBox;
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int fastClip = 0; /* for fast clipping with pixmap source */
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int fastExpose = 0; /* for fast exposures with pixmap source */
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if ( pDstDrawable->type != DRAWABLE_WINDOW )
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return miCopyArea( pSrcDrawable, pDstDrawable, pGC,
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srcx, srcy, width, height, dstx, dsty ) ;
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/* Begin code from mfb/cfbCopyArea */
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origSource.x = srcx;
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origSource.y = srcy;
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origSource.width = width;
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origSource.height = height;
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origDest.x = dstx;
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origDest.y = dsty;
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if ((pSrcDrawable != pDstDrawable) &&
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pSrcDrawable->pScreen->SourceValidate)
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{
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(*pSrcDrawable->pScreen->SourceValidate) (pSrcDrawable, srcx, srcy, width, height);
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}
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srcx += pSrcDrawable->x;
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srcy += pSrcDrawable->y;
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/* clip the source */
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if (pSrcDrawable->type == DRAWABLE_PIXMAP)
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{
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if ((pSrcDrawable == pDstDrawable) &&
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(pGC->clientClipType == CT_NONE))
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{
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prgnSrcClip = pGC->pCompositeClip;
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}
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else
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{
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fastClip = 1;
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}
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}
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else
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{
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if (pGC->subWindowMode == IncludeInferiors)
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{
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if (!((WindowPtr) pSrcDrawable)->parent)
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{
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/*
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* special case bitblt from root window in
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* IncludeInferiors mode; just like from a pixmap
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*/
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fastClip = 1;
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}
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else if ((pSrcDrawable == pDstDrawable) &&
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(pGC->clientClipType == CT_NONE))
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{
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prgnSrcClip = pGC->pCompositeClip;
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}
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else
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{
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prgnSrcClip = NotClippedByChildren((WindowPtr)pSrcDrawable);
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freeSrcClip = TRUE;
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}
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}
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else
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{
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prgnSrcClip = &((WindowPtr)pSrcDrawable)->clipList;
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}
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}
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fastBox.x1 = srcx;
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fastBox.y1 = srcy;
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fastBox.x2 = srcx + width;
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fastBox.y2 = srcy + height;
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/* Don't create a source region if we are doing a fast clip */
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if (fastClip)
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{
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fastExpose = 1;
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/*
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* clip the source; if regions extend beyond the source size,
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* make sure exposure events get sent
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*/
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if (fastBox.x1 < pSrcDrawable->x)
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{
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fastBox.x1 = pSrcDrawable->x;
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fastExpose = 0;
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}
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if (fastBox.y1 < pSrcDrawable->y)
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{
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fastBox.y1 = pSrcDrawable->y;
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fastExpose = 0;
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}
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if (fastBox.x2 > pSrcDrawable->x + (int) pSrcDrawable->width)
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{
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fastBox.x2 = pSrcDrawable->x + (int) pSrcDrawable->width;
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fastExpose = 0;
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}
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if (fastBox.y2 > pSrcDrawable->y + (int) pSrcDrawable->height)
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{
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fastBox.y2 = pSrcDrawable->y + (int) pSrcDrawable->height;
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fastExpose = 0;
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}
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}
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else
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{
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REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
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REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, prgnSrcClip);
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}
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dstx += pDstDrawable->x;
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dsty += pDstDrawable->y;
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if (pDstDrawable->type == DRAWABLE_WINDOW)
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{
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if (!((WindowPtr)pDstDrawable)->realized)
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{
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if (!fastClip)
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REGION_UNINIT(pGC->pScreen, &rgnDst);
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if (freeSrcClip)
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REGION_DESTROY(pGC->pScreen, prgnSrcClip);
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return NULL;
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}
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}
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dx = srcx - dstx;
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dy = srcy - dsty;
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/* Translate and clip the dst to the destination composite clip */
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if (fastClip)
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{
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RegionPtr cclip;
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/* Translate the region directly */
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fastBox.x1 -= dx;
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fastBox.x2 -= dx;
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fastBox.y1 -= dy;
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fastBox.y2 -= dy;
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/* If the destination composite clip is one rectangle we can
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do the clip directly. Otherwise we have to create a full
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blown region and call intersect */
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cclip = pGC->pCompositeClip;
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if (REGION_NUM_RECTS(cclip) == 1)
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{
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BoxPtr pBox = REGION_RECTS(cclip);
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if (fastBox.x1 < pBox->x1) fastBox.x1 = pBox->x1;
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if (fastBox.x2 > pBox->x2) fastBox.x2 = pBox->x2;
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if (fastBox.y1 < pBox->y1) fastBox.y1 = pBox->y1;
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if (fastBox.y2 > pBox->y2) fastBox.y2 = pBox->y2;
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/* Check to see if the region is empty */
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if (fastBox.x1 >= fastBox.x2 || fastBox.y1 >= fastBox.y2)
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{
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REGION_NULL(pGC->pScreen, &rgnDst);
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}
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else
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{
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REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
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}
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}
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else
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{
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/* We must turn off fastClip now, since we must create
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a full blown region. It is intersected with the
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composite clip below. */
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fastClip = 0;
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REGION_INIT(pGC->pScreen, &rgnDst, &fastBox, 1);
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}
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}
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else
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{
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REGION_TRANSLATE(pGC->pScreen, &rgnDst, -dx, -dy);
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}
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if (!fastClip)
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{
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REGION_INTERSECT(pGC->pScreen, &rgnDst, &rgnDst, pGC->pCompositeClip);
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}
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/* Do bit blitting */
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numRects = REGION_NUM_RECTS(&rgnDst);
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if (numRects && width && height)
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{
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if(!(pptSrc = (DDXPointPtr)ALLOCATE_LOCAL(numRects *
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sizeof(DDXPointRec))))
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{
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REGION_UNINIT(pGC->pScreen, &rgnDst);
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if (freeSrcClip)
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REGION_DESTROY(pGC->pScreen, prgnSrcClip);
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return NULL;
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}
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pbox = REGION_RECTS(&rgnDst);
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ppt = pptSrc;
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for (i = numRects; --i >= 0; pbox++, ppt++)
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{
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ppt->x = pbox->x1 + dx;
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ppt->y = pbox->y1 + dy;
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}
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vga16DoBitblt(pSrcDrawable, pDstDrawable, pGC->alu,
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&rgnDst, pptSrc, pGC->planemask );
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DEALLOCATE_LOCAL(pptSrc);
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}
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prgnExposed = NULL;
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if (pGC->fExpose)
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{
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/* Pixmap sources generate a NoExposed (we return NULL to do this) */
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if (!fastExpose)
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prgnExposed =
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miHandleExposures(pSrcDrawable, pDstDrawable, pGC,
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origSource.x, origSource.y,
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(int)origSource.width,
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(int)origSource.height,
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origDest.x, origDest.y, (unsigned long)0);
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}
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REGION_UNINIT(pGC->pScreen, &rgnDst);
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if (freeSrcClip)
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REGION_DESTROY(pGC->pScreen, prgnSrcClip);
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return prgnExposed;
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}
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