X-Git-Url: https://git.sesse.net/?p=rdpsrv;a=blobdiff_plain;f=Xserver%2Fprograms%2FXserver%2Fcfb%2Fcfbsetsp.c;fp=Xserver%2Fprograms%2FXserver%2Fcfb%2Fcfbsetsp.c;h=e640c1924d0b67d5d944d139adad6553f34646e6;hp=0000000000000000000000000000000000000000;hb=b6e6afccf37f4ad0515ef2a698f714fdf1bf23b3;hpb=e3340a110a3b01756b8e67531395a33b40a17d37 diff --git a/Xserver/programs/Xserver/cfb/cfbsetsp.c b/Xserver/programs/Xserver/cfb/cfbsetsp.c new file mode 100644 index 0000000..e640c19 --- /dev/null +++ b/Xserver/programs/Xserver/cfb/cfbsetsp.c @@ -0,0 +1,308 @@ +/* $XConsortium: cfbsetsp.c,v 5.10 94/04/17 20:29:01 dpw Exp $ */ +/* $XFree86: xc/programs/Xserver/cfb/cfbsetsp.c,v 3.0 1996/06/29 09:05:49 dawes Exp $ */ +/*********************************************************** + +Copyright (c) 1987 X Consortium + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN +AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN +CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of the X Consortium shall not be +used in advertising or otherwise to promote the sale, use or other dealings +in this Software without prior written authorization from the X Consortium. + + +Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Digital not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +******************************************************************/ + +#include "X.h" +#include "Xmd.h" +#include "servermd.h" + +#include "misc.h" +#include "regionstr.h" +#include "gcstruct.h" +#include "windowstr.h" +#include "pixmapstr.h" +#include "scrnintstr.h" + +#include "cfb.h" +#include "cfbmskbits.h" +#include + +/* cfbSetScanline -- copies the bits from psrc to the drawable starting at + * (xStart, y) and continuing to (xEnd, y). xOrigin tells us where psrc + * starts on the scanline. (I.e., if this scanline passes through multiple + * boxes, we may not want to start grabbing bits at psrc but at some offset + * further on.) + */ +cfbSetScanline(y, xOrigin, xStart, xEnd, psrc, alu, pdstBase, widthDst, planemask) + int y; + int xOrigin; /* where this scanline starts */ + int xStart; /* first bit to use from scanline */ + int xEnd; /* last bit to use from scanline + 1 */ + register unsigned int *psrc; + register int alu; /* raster op */ + int *pdstBase; /* start of the drawable */ + int widthDst; /* width of drawable in words */ + unsigned long planemask; +{ + int w; /* width of scanline in bits */ + register int *pdst; /* where to put the bits */ + register int tmpSrc; /* scratch buffer to collect bits in */ + int dstBit; /* offset in bits from beginning of + * word */ + register int nstart; /* number of bits from first partial */ + register int nend; /* " " last partial word */ + int offSrc; + int startmask, endmask, nlMiddle, nl; +#if PSZ == 24 + register char *psrcb, *pdstb; + register int xIndex; +#endif + DeclareMergeRop() + + InitializeMergeRop(alu,planemask); +#if PSZ == 24 + pdst = pdstBase + (y * widthDst); + xIndex = xStart; + pdstb = (char *)pdst + (xStart * 3); + offSrc = xStart - xOrigin; + psrcb = (char *)psrc + (offSrc * 3); +#else + pdst = pdstBase + (y * widthDst) + (xStart >> PWSH); + psrc += (xStart - xOrigin) >> PWSH; + offSrc = (xStart - xOrigin) & PIM; +#endif + w = xEnd - xStart; + dstBit = xStart & PIM; + +#if PSZ == 24 + nl = w; + while (nl--){ + psrc = (unsigned int *)((unsigned long)psrcb & ~0x03); + getbits24(psrc, tmpSrc, offSrc); + pdst = (int *)((unsigned long)pdstb & ~0x03); + DoMergeRop24(tmpSrc, pdst, xIndex); + offSrc++; + psrcb += 3; + xIndex++; + pdstb += 3; + } +#else /* PSZ == 24 */ + if (dstBit + w <= PPW) + { + maskpartialbits(dstBit, w, startmask); + endmask = 0; + nlMiddle = 0; + } + else + { + maskbits(xStart, w, startmask, endmask, nlMiddle); + } + if (startmask) + nstart = PPW - dstBit; + else + nstart = 0; + if (endmask) + nend = xEnd & PIM; + else + nend = 0; + if (startmask) + { + getbits(psrc, offSrc, nstart, tmpSrc); + putbitsmropshort(tmpSrc, dstBit, nstart, pdst); + pdst++; + offSrc += nstart; + if (offSrc > PLST) + { + psrc++; + offSrc -= PPW; + } + } + nl = nlMiddle; + while (nl--) + { + getbits(psrc, offSrc, PPW, tmpSrc); + *pdst = DoMergeRop(tmpSrc, *pdst); + pdst++; + psrc++; + } + if (endmask) + { + getbits(psrc, offSrc, nend, tmpSrc); + putbitsmropshort(tmpSrc, 0, nend, pdst); + } +#endif /* PSZ == 24 */ +} + + + +/* SetSpans -- for each span copy pwidth[i] bits from psrc to pDrawable at + * ppt[i] using the raster op from the GC. If fSorted is TRUE, the scanlines + * are in increasing Y order. + * Source bit lines are server scanline padded so that they always begin + * on a word boundary. + */ +void +cfbSetSpans(pDrawable, pGC, pcharsrc, ppt, pwidth, nspans, fSorted) + DrawablePtr pDrawable; + GCPtr pGC; + char *pcharsrc; + register DDXPointPtr ppt; + int *pwidth; + int nspans; + int fSorted; +{ + unsigned int *psrc = (unsigned int *)pcharsrc; + unsigned long *pdstBase; /* start of dst bitmap */ + int widthDst; /* width of bitmap in words */ + register BoxPtr pbox, pboxLast, pboxTest; + register DDXPointPtr pptLast; + int alu; + RegionPtr prgnDst; + int xStart, xEnd; + int yMax; + + alu = pGC->alu; + prgnDst = cfbGetCompositeClip(pGC); + pptLast = ppt + nspans; + + cfbGetLongWidthAndPointer (pDrawable, widthDst, pdstBase) + + yMax = (int) pDrawable->y + (int) pDrawable->height; + + pbox = REGION_RECTS(prgnDst); + pboxLast = pbox + REGION_NUM_RECTS(prgnDst); + + if(fSorted) + { + /* scan lines sorted in ascending order. Because they are sorted, we + * don't have to check each scanline against each clip box. We can be + * sure that this scanline only has to be clipped to boxes at or after the + * beginning of this y-band + */ + pboxTest = pbox; + while(ppt < pptLast) + { + pbox = pboxTest; + if(ppt->y >= yMax) + break; + while(pbox < pboxLast) + { + if(pbox->y1 > ppt->y) + { + /* scanline is before clip box */ + break; + } + else if(pbox->y2 <= ppt->y) + { + /* clip box is before scanline */ + pboxTest = ++pbox; + continue; + } + else if(pbox->x1 > ppt->x + *pwidth) + { + /* clip box is to right of scanline */ + break; + } + else if(pbox->x2 <= ppt->x) + { + /* scanline is to right of clip box */ + pbox++; + continue; + } + + /* at least some of the scanline is in the current clip box */ + xStart = max(pbox->x1, ppt->x); + xEnd = min(ppt->x + *pwidth, pbox->x2); + cfbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu, + (int *)pdstBase, widthDst, pGC->planemask); + if(ppt->x + *pwidth <= pbox->x2) + { + /* End of the line, as it were */ + break; + } + else + pbox++; + } + /* We've tried this line against every box; it must be outside them + * all. move on to the next point */ + ppt++; + psrc += PixmapWidthInPadUnits(*pwidth, pDrawable->depth); + pwidth++; + } + } + else + { + /* scan lines not sorted. We must clip each line against all the boxes */ + while(ppt < pptLast) + { + if(ppt->y >= 0 && ppt->y < yMax) + { + + for(pbox = REGION_RECTS(prgnDst); pbox< pboxLast; pbox++) + { + if(pbox->y1 > ppt->y) + { + /* rest of clip region is above this scanline, + * skip it */ + break; + } + if(pbox->y2 <= ppt->y) + { + /* clip box is below scanline */ + pbox++; + break; + } + if(pbox->x1 <= ppt->x + *pwidth && + pbox->x2 > ppt->x) + { + xStart = max(pbox->x1, ppt->x); + xEnd = min(pbox->x2, ppt->x + *pwidth); + cfbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu, + (int *)pdstBase, widthDst, pGC->planemask); + } + + } + } + psrc += PixmapWidthInPadUnits(*pwidth, pDrawable->depth); + ppt++; + pwidth++; + } + } +} +