634 lines
14 KiB
C
634 lines
14 KiB
C
/*
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* cfb copy area
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*/
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/*
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Copyright 1989, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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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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OPEN GROUP 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 Open Group 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 Open Group.
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Author: Keith Packard
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*/
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/* $Xorg: cfbblt.c,v 1.4 2001/02/09 02:04:37 xorgcvs Exp $ */
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#include "X.h"
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#include "Xmd.h"
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#include "Xproto.h"
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#include "gcstruct.h"
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#include "windowstr.h"
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "regionstr.h"
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#include "cfb.h"
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#include "cfbmskbits.h"
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#include "cfb8bit.h"
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#include "fastblt.h"
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#include "mergerop.h"
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#ifdef notdef /* XXX fails right now, walks off end of pixmaps */
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#if defined (FAST_UNALIGNED_READS) && PSZ == 8
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#define DO_UNALIGNED_BITBLT
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#endif
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#endif
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#if defined(FAST_MEMCPY) && (MROP == Mcopy) && PSZ == 8
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#define DO_MEMCPY
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#endif
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void
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MROP_NAME(cfbDoBitblt)(pSrc, pDst, alu, prgnDst, pptSrc, planemask)
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DrawablePtr pSrc, 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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unsigned long *psrcBase, *pdstBase;
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/* start of src and dst bitmaps */
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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 xdir; /* 1 = left right, -1 = right left/ */
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int ydir; /* 1 = top down, -1 = bottom up */
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unsigned long *psrcLine, *pdstLine;
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/* pointers to line with current src and dst */
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register unsigned long *psrc;/* pointer to current src longword */
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register unsigned long *pdst;/* pointer to current dst longword */
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MROP_DECLARE_REG()
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/* following used for looping through a line */
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unsigned long startmask, endmask; /* masks for writing ends of dst */
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int nlMiddle; /* whole longwords in dst */
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int xoffSrc, xoffDst;
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register int leftShift, rightShift;
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register unsigned long bits;
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register unsigned long bits1;
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register int nl; /* temp copy of nlMiddle */
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/* place to store full source word */
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int nstart; /* number of ragged bits at start of dst */
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int nend; /* number of ragged bits at end of dst */
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int srcStartOver; /* pulling nstart bits from src
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overflows into the next word? */
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int careful;
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int tmpSrc;
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MROP_INITIALIZE(alu,planemask);
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cfbGetLongWidthAndPointer (pSrc, widthSrc, psrcBase)
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cfbGetLongWidthAndPointer (pDst, widthDst, pdstBase)
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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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ydir = -1;
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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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else
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{
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/* walk source top to bottom */
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ydir = 1;
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}
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if (careful && (pptSrc->x < pbox->x1))
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{
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/* walk source right to left */
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xdir = -1;
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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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else
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{
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/* walk source left to right */
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xdir = 1;
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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 (ydir == -1) /* start at last scanline of rectangle */
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{
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psrcLine = psrcBase + ((pptSrc->y+h-1) * -widthSrc);
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pdstLine = pdstBase + ((pbox->y2-1) * -widthDst);
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}
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else /* start at first scanline */
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{
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psrcLine = psrcBase + (pptSrc->y * widthSrc);
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pdstLine = pdstBase + (pbox->y1 * widthDst);
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}
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if ((pbox->x1 & PIM) + w <= PPW)
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{
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maskpartialbits (pbox->x1, w, endmask);
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startmask = 0;
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nlMiddle = 0;
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}
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else
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{
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maskbits(pbox->x1, w, startmask, endmask, nlMiddle);
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}
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#ifdef DO_MEMCPY
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/* If the src and dst scanline don't overlap, do forward case. */
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if ((xdir == 1) || (pptSrc->y != pbox->y1)
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|| (pptSrc->x + w <= pbox->x1))
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{
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char *psrc = (char *) psrcLine + pptSrc->x;
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char *pdst = (char *) pdstLine + pbox->x1;
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while (h--)
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{
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memcpy(pdst, psrc, w);
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pdst += widthDst << 2;
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psrc += widthSrc << 2;
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}
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}
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#else /* ! DO_MEMCPY */
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if (xdir == 1)
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{
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xoffSrc = pptSrc->x & PIM;
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xoffDst = pbox->x1 & PIM;
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pdstLine += (pbox->x1 >> PWSH);
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psrcLine += (pptSrc->x >> PWSH);
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#ifdef DO_UNALIGNED_BITBLT
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nl = xoffSrc - xoffDst;
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psrcLine = (unsigned long *)
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(((unsigned char *) psrcLine) + nl);
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#else
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if (xoffSrc == xoffDst)
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#endif
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{
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while (h--)
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{
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psrc = psrcLine;
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pdst = pdstLine;
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pdstLine += widthDst;
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psrcLine += widthSrc;
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if (startmask)
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{
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*pdst = MROP_MASK(*psrc, *pdst, startmask);
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psrc++;
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pdst++;
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}
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nl = nlMiddle;
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#ifdef LARGE_INSTRUCTION_CACHE
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#ifdef FAST_CONSTANT_OFFSET_MODE
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psrc += nl & (UNROLL-1);
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pdst += nl & (UNROLL-1);
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#define BodyOdd(n) pdst[-n] = MROP_SOLID (psrc[-n], pdst[-n]);
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#define BodyEven(n) pdst[-n] = MROP_SOLID (psrc[-n], pdst[-n]);
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#define LoopReset \
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pdst += UNROLL; \
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psrc += UNROLL;
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#else
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#define BodyOdd(n) *pdst = MROP_SOLID (*psrc, *pdst); pdst++; psrc++;
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#define BodyEven(n) BodyOdd(n)
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#define LoopReset ;
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#endif
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PackedLoop
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#undef BodyOdd
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#undef BodyEven
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#undef LoopReset
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#else
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#ifdef NOTDEF
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/* you'd think this would be faster --
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* a single instruction instead of 6
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* but measurements show it to be ~15% slower
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*/
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while ((nl -= 6) >= 0)
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{
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asm ("moveml %1+,#0x0c0f;moveml#0x0c0f,%0"
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: "=m" (*(char *)pdst)
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: "m" (*(char *)psrc)
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: "d0", "d1", "d2", "d3",
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"a2", "a3");
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pdst += 6;
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}
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nl += 6;
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while (nl--)
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*pdst++ = *psrc++;
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#endif
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DuffL(nl, label1,
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*pdst = MROP_SOLID (*psrc, *pdst);
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pdst++; psrc++;)
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#endif
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if (endmask)
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*pdst = MROP_MASK(*psrc, *pdst, endmask);
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}
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}
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#ifndef DO_UNALIGNED_BITBLT
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else
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{
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if (xoffSrc > xoffDst)
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{
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#if PGSZ == 32
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leftShift = (xoffSrc - xoffDst) << (5 - PWSH);
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#else /* PGSZ == 64 */
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leftShift = (xoffSrc - xoffDst) << (6 - PWSH);
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#endif /* PGSZ */
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rightShift = PGSZ - leftShift;
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}
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else
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{
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#if PGSZ == 32
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rightShift = (xoffDst - xoffSrc) << (5 - PWSH);
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#else /* PGSZ == 64 */
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rightShift = (xoffDst - xoffSrc) << (6 - PWSH);
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#endif /* PGSZ */
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leftShift = PGSZ - rightShift;
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}
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while (h--)
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{
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psrc = psrcLine;
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pdst = pdstLine;
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pdstLine += widthDst;
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psrcLine += widthSrc;
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bits = 0;
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if (xoffSrc > xoffDst)
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bits = *psrc++;
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if (startmask)
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{
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bits1 = BitLeft(bits,leftShift);
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bits = *psrc++;
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bits1 |= BitRight(bits,rightShift);
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*pdst = MROP_MASK(bits1, *pdst, startmask);
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pdst++;
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}
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nl = nlMiddle;
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#ifdef LARGE_INSTRUCTION_CACHE
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bits1 = bits;
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#ifdef FAST_CONSTANT_OFFSET_MODE
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psrc += nl & (UNROLL-1);
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pdst += nl & (UNROLL-1);
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#define BodyOdd(n) \
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bits = psrc[-n]; \
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pdst[-n] = MROP_SOLID(BitLeft(bits1, leftShift) | BitRight(bits, rightShift), pdst[-n]);
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#define BodyEven(n) \
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bits1 = psrc[-n]; \
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pdst[-n] = MROP_SOLID(BitLeft(bits, leftShift) | BitRight(bits1, rightShift), pdst[-n]);
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#define LoopReset \
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pdst += UNROLL; \
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psrc += UNROLL;
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#else
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#define BodyOdd(n) \
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bits = *psrc++; \
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*pdst = MROP_SOLID(BitLeft(bits1, leftShift) | BitRight(bits, rightShift), *pdst); \
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pdst++;
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#define BodyEven(n) \
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bits1 = *psrc++; \
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*pdst = MROP_SOLID(BitLeft(bits, leftShift) | BitRight(bits1, rightShift), *pdst); \
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pdst++;
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#define LoopReset ;
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#endif /* !FAST_CONSTANT_OFFSET_MODE */
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PackedLoop
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#undef BodyOdd
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#undef BodyEven
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#undef LoopReset
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#else
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DuffL (nl,label2,
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bits1 = BitLeft(bits, leftShift);
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bits = *psrc++;
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*pdst = MROP_SOLID (bits1 | BitRight(bits, rightShift), *pdst);
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pdst++;
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)
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#endif
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if (endmask)
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{
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bits1 = BitLeft(bits, leftShift);
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if (BitLeft(endmask, rightShift))
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{
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bits = *psrc;
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bits1 |= BitRight(bits, rightShift);
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}
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*pdst = MROP_MASK (bits1, *pdst, endmask);
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}
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}
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}
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#endif /* DO_UNALIGNED_BITBLT */
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}
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#endif /* ! DO_MEMCPY */
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else /* xdir == -1 */
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{
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xoffSrc = (pptSrc->x + w - 1) & PIM;
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xoffDst = (pbox->x2 - 1) & PIM;
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pdstLine += ((pbox->x2-1) >> PWSH) + 1;
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psrcLine += ((pptSrc->x+w - 1) >> PWSH) + 1;
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#ifdef DO_UNALIGNED_BITBLT
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nl = xoffSrc - xoffDst;
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psrcLine = (unsigned long *)
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(((unsigned char *) psrcLine) + nl);
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#else
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if (xoffSrc == xoffDst)
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#endif
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{
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while (h--)
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{
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psrc = psrcLine;
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pdst = pdstLine;
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pdstLine += widthDst;
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psrcLine += widthSrc;
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if (endmask)
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{
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pdst--;
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psrc--;
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*pdst = MROP_MASK (*psrc, *pdst, endmask);
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}
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nl = nlMiddle;
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#ifdef LARGE_INSTRUCTION_CACHE
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#ifdef FAST_CONSTANT_OFFSET_MODE
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psrc -= nl & (UNROLL - 1);
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pdst -= nl & (UNROLL - 1);
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#define BodyOdd(n) pdst[n-1] = MROP_SOLID (psrc[n-1], pdst[n-1]);
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#define BodyEven(n) BodyOdd(n)
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#define LoopReset \
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pdst -= UNROLL;\
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psrc -= UNROLL;
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#else
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#define BodyOdd(n) --pdst; --psrc; *pdst = MROP_SOLID(*psrc, *pdst);
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#define BodyEven(n) BodyOdd(n)
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#define LoopReset ;
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#endif
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PackedLoop
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#undef BodyOdd
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#undef BodyEven
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#undef LoopReset
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#else
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DuffL(nl,label3,
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--pdst; --psrc; *pdst = MROP_SOLID (*psrc, *pdst);)
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#endif
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if (startmask)
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{
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--pdst;
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--psrc;
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*pdst = MROP_MASK(*psrc, *pdst, startmask);
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}
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}
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}
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#ifndef DO_UNALIGNED_BITBLT
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else
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{
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if (xoffDst > xoffSrc)
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{
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#if PGSZ == 32
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rightShift = (xoffDst - xoffSrc) << (5 - PWSH);
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#else /* PGSZ == 64 */
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rightShift = (xoffDst - xoffSrc) << (6 - PWSH);
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#endif /* PGSZ */
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leftShift = PGSZ - rightShift;
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}
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else
|
|
{
|
|
#if PGSZ == 32
|
|
leftShift = (xoffSrc - xoffDst) << (5 - PWSH);
|
|
#else /* PGSZ == 64 */
|
|
leftShift = (xoffSrc - xoffDst) << (6 - PWSH);
|
|
#endif /* PGSZ */
|
|
rightShift = PGSZ - leftShift;
|
|
}
|
|
while (h--)
|
|
{
|
|
psrc = psrcLine;
|
|
pdst = pdstLine;
|
|
pdstLine += widthDst;
|
|
psrcLine += widthSrc;
|
|
bits = 0;
|
|
if (xoffDst > xoffSrc)
|
|
bits = *--psrc;
|
|
if (endmask)
|
|
{
|
|
bits1 = BitRight(bits, rightShift);
|
|
bits = *--psrc;
|
|
bits1 |= BitLeft(bits, leftShift);
|
|
pdst--;
|
|
*pdst = MROP_MASK(bits1, *pdst, endmask);
|
|
}
|
|
nl = nlMiddle;
|
|
|
|
#ifdef LARGE_INSTRUCTION_CACHE
|
|
bits1 = bits;
|
|
#ifdef FAST_CONSTANT_OFFSET_MODE
|
|
psrc -= nl & (UNROLL - 1);
|
|
pdst -= nl & (UNROLL - 1);
|
|
|
|
#define BodyOdd(n) \
|
|
bits = psrc[n-1]; \
|
|
pdst[n-1] = MROP_SOLID(BitRight(bits1, rightShift) | BitLeft(bits, leftShift),pdst[n-1]);
|
|
|
|
#define BodyEven(n) \
|
|
bits1 = psrc[n-1]; \
|
|
pdst[n-1] = MROP_SOLID(BitRight(bits, rightShift) | BitLeft(bits1, leftShift),pdst[n-1]);
|
|
|
|
#define LoopReset \
|
|
pdst -= UNROLL; \
|
|
psrc -= UNROLL;
|
|
|
|
#else
|
|
|
|
#define BodyOdd(n) \
|
|
bits = *--psrc; --pdst; \
|
|
*pdst = MROP_SOLID(BitRight(bits1, rightShift) | BitLeft(bits, leftShift),*pdst);
|
|
|
|
#define BodyEven(n) \
|
|
bits1 = *--psrc; --pdst; \
|
|
*pdst = MROP_SOLID(BitRight(bits, rightShift) | BitLeft(bits1, leftShift),*pdst);
|
|
|
|
#define LoopReset ;
|
|
|
|
#endif
|
|
|
|
PackedLoop
|
|
|
|
#undef BodyOdd
|
|
#undef BodyEven
|
|
#undef LoopReset
|
|
|
|
#else
|
|
DuffL (nl, label4,
|
|
bits1 = BitRight(bits, rightShift);
|
|
bits = *--psrc;
|
|
--pdst;
|
|
*pdst = MROP_SOLID(bits1 | BitLeft(bits, leftShift),*pdst);
|
|
)
|
|
#endif
|
|
|
|
if (startmask)
|
|
{
|
|
bits1 = BitRight(bits, rightShift);
|
|
if (BitRight (startmask, leftShift))
|
|
{
|
|
bits = *--psrc;
|
|
bits1 |= BitLeft(bits, leftShift);
|
|
}
|
|
--pdst;
|
|
*pdst = MROP_MASK(bits1, *pdst, startmask);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
pbox++;
|
|
pptSrc++;
|
|
}
|
|
if (pboxNew2)
|
|
{
|
|
DEALLOCATE_LOCAL(pptNew2);
|
|
DEALLOCATE_LOCAL(pboxNew2);
|
|
}
|
|
if (pboxNew1)
|
|
{
|
|
DEALLOCATE_LOCAL(pptNew1);
|
|
DEALLOCATE_LOCAL(pboxNew1);
|
|
}
|
|
}
|