/*********************************************************** Copyright 1987, 1998 The Open Group Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. 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 OPEN GROUP 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 Open Group 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 Open Group. 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. ******************************************************************/ #ifdef HAVE_DIX_CONFIG_H #include #endif #include #include #include "servermd.h" #include "misc.h" #include "region.h" #include "gc.h" #include "windowstr.h" #include "pixmapstr.h" #include "scrnintstr.h" #include "cfb.h" #include "cfbmskbits.h" /* GetSpans -- for each span, gets bits from drawable starting at ppt[i] * and continuing for pwidth[i] bits * Each scanline returned will be server scanline padded, i.e., it will come * out to an integral number of words. */ void cfbGetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart) DrawablePtr pDrawable; /* drawable from which to get bits */ int wMax; /* largest value of all *pwidths */ register DDXPointPtr ppt; /* points to start copying from */ int *pwidth; /* list of number of bits to copy */ int nspans; /* number of scanlines to copy */ char *pchardstStart; /* where to put the bits */ { PixelGroup *pdstStart = (PixelGroup *)pchardstStart; register PixelGroup *pdst; /* where to put the bits */ register PixelGroup *psrc; /* where to get the bits */ register PixelGroup tmpSrc; /* scratch buffer for bits */ PixelGroup *psrcBase; /* start of src bitmap */ int widthSrc; /* width of pixmap in bytes */ register DDXPointPtr pptLast; /* one past last point to get */ int xEnd; /* last pixel to copy from */ int nl, srcBit; int w; PixelGroup *pdstNext; #if PSZ == 24 register char *psrcb, *pdstb; register int xIndex = 0; #else register int nstart; #if PSZ != 32 || PPW != 1 int nend; #endif PixelGroup startmask, endmask; int nlMiddle; #endif switch (pDrawable->bitsPerPixel) { case 1: mfbGetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart); return; case PSZ: break; default: FatalError("cfbGetSpans: invalid depth\n"); } /* * XFree86 DDX empties the root borderClip when the VT is * switched away; this checks for that case */ if (!cfbDrawableEnabled(pDrawable)) return; cfbGetLongWidthAndPointer (pDrawable, widthSrc, psrcBase) #ifdef PIXEL_ADDR # if PSZ != 24 if ((nspans == 1) && (*pwidth == 1)) { tmpSrc = *((PixelType *)(psrcBase + (ppt->y * widthSrc)) + ppt->x); #if BITMAP_BIT_ORDER == MSBFirst tmpSrc <<= (sizeof (CfbBits) - sizeof (PixelType)) * 8; #endif *pdstStart = tmpSrc; return; } # endif /* PSZ != 24 */ #endif pdst = pdstStart; pptLast = ppt + nspans; while(ppt < pptLast) { #if PSZ == 24 xEnd = min(ppt->x + *pwidth, widthSrc * sizeof(CfbBits) / 3); w = xEnd - ppt->x; psrc = psrcBase + ppt->y * widthSrc; srcBit = ppt->x; psrcb = (char *)psrc + (ppt->x * 3); xIndex = 0; pdstb = (char *)pdst; pdstNext = pdst + ((w * 3 + 3) >> 2); #else xEnd = min(ppt->x + *pwidth, widthSrc << PWSH); w = xEnd - ppt->x; psrc = psrcBase + ppt->y * widthSrc + (ppt->x >> PWSH); srcBit = ppt->x & PIM; pdstNext = pdst + ((w + PPW - 1) >> PWSH); #endif #if PSZ == 24 if (w < 0) FatalError("cfb24GetSpans: Internal error (w < 0)\n"); nl = w; while (nl--){ psrc = (PixelGroup *)((unsigned long)psrcb & ~0x03); getbits24(psrc, tmpSrc, srcBit); pdst = (PixelGroup *)((unsigned long)pdstb & ~0x03); putbits24(tmpSrc, PPW, pdst, ~((CfbBits)0), xIndex); srcBit++; psrcb += 3; xIndex++; pdstb += 3; } pdst = pdstNext; #else /* PSZ == 24 */ if (srcBit + w <= PPW) { getbits(psrc, srcBit, w, tmpSrc); putbits(tmpSrc, 0, w, pdst, ~((CfbBits)0)); pdst++; } else { maskbits(ppt->x, w, startmask, endmask, nlMiddle); nstart = 0; if (startmask) { nstart = PPW - srcBit; getbits(psrc, srcBit, nstart, tmpSrc); putbits(tmpSrc, 0, nstart, pdst, ~((CfbBits)0)); if(srcBit + nstart >= PPW) psrc++; } nl = nlMiddle; while (nl--) { tmpSrc = *psrc; putbits(tmpSrc, nstart, PPW, pdst, ~((CfbBits)0)); psrc++; pdst++; } if (endmask) { #if PSZ != 32 || PPW != 1 nend = xEnd & PIM; #endif getbits(psrc, 0, nend, tmpSrc); putbits(tmpSrc, nstart, nend, pdst, ~((CfbBits)0)); } pdst = pdstNext; } #endif /* PSZ == 24 */ ppt++; pwidth++; } }