214 lines
6.4 KiB
C
214 lines
6.4 KiB
C
/***********************************************************
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Copyright 1987, 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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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_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include "servermd.h"
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#include "misc.h"
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#include "region.h"
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#include "gc.h"
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#include "windowstr.h"
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#include "pixmapstr.h"
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#include "scrnintstr.h"
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#include "cfb.h"
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#include "cfbmskbits.h"
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/* GetSpans -- for each span, gets bits from drawable starting at ppt[i]
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* and continuing for pwidth[i] bits
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* Each scanline returned will be server scanline padded, i.e., it will come
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* out to an integral number of words.
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*/
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void
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cfbGetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart)
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DrawablePtr pDrawable; /* drawable from which to get bits */
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int wMax; /* largest value of all *pwidths */
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register DDXPointPtr ppt; /* points to start copying from */
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int *pwidth; /* list of number of bits to copy */
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int nspans; /* number of scanlines to copy */
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char *pchardstStart; /* where to put the bits */
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{
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PixelGroup *pdstStart = (PixelGroup *)pchardstStart;
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register PixelGroup *pdst; /* where to put the bits */
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register PixelGroup *psrc; /* where to get the bits */
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register PixelGroup tmpSrc; /* scratch buffer for bits */
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PixelGroup *psrcBase; /* start of src bitmap */
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int widthSrc; /* width of pixmap in bytes */
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register DDXPointPtr pptLast; /* one past last point to get */
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int xEnd; /* last pixel to copy from */
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int nl, srcBit;
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int w;
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PixelGroup *pdstNext;
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#if PSZ == 24
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register char *psrcb, *pdstb;
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register int xIndex = 0;
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#else
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register int nstart;
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#if PSZ != 32 || PPW != 1
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int nend;
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#endif
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PixelGroup startmask, endmask;
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int nlMiddle;
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#endif
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switch (pDrawable->bitsPerPixel) {
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case 1:
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mfbGetSpans(pDrawable, wMax, ppt, pwidth, nspans, pchardstStart);
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return;
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case PSZ:
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break;
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default:
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FatalError("cfbGetSpans: invalid depth\n");
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}
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/*
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* XFree86 DDX empties the root borderClip when the VT is
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* switched away; this checks for that case
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*/
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if (!cfbDrawableEnabled(pDrawable))
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return;
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cfbGetLongWidthAndPointer (pDrawable, widthSrc, psrcBase)
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#ifdef PIXEL_ADDR
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# if PSZ != 24
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if ((nspans == 1) && (*pwidth == 1))
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{
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tmpSrc = *((PixelType *)(psrcBase + (ppt->y * widthSrc))
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+ ppt->x);
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#if BITMAP_BIT_ORDER == MSBFirst
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tmpSrc <<= (sizeof (CfbBits) - sizeof (PixelType)) * 8;
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#endif
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*pdstStart = tmpSrc;
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return;
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}
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# endif /* PSZ != 24 */
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#endif
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pdst = pdstStart;
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pptLast = ppt + nspans;
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while(ppt < pptLast)
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{
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#if PSZ == 24
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xEnd = min(ppt->x + *pwidth, widthSrc * sizeof(CfbBits) / 3);
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w = xEnd - ppt->x;
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psrc = psrcBase + ppt->y * widthSrc;
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srcBit = ppt->x;
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psrcb = (char *)psrc + (ppt->x * 3);
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xIndex = 0;
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pdstb = (char *)pdst;
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pdstNext = pdst + ((w * 3 + 3) >> 2);
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#else
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xEnd = min(ppt->x + *pwidth, widthSrc << PWSH);
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w = xEnd - ppt->x;
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psrc = psrcBase + ppt->y * widthSrc + (ppt->x >> PWSH);
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srcBit = ppt->x & PIM;
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pdstNext = pdst + ((w + PPW - 1) >> PWSH);
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#endif
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#if PSZ == 24
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if (w < 0)
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FatalError("cfb24GetSpans: Internal error (w < 0)\n");
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nl = w;
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while (nl--){
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psrc = (PixelGroup *)((unsigned long)psrcb & ~0x03);
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getbits24(psrc, tmpSrc, srcBit);
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pdst = (PixelGroup *)((unsigned long)pdstb & ~0x03);
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putbits24(tmpSrc, PPW, pdst, ~((CfbBits)0), xIndex);
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srcBit++;
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psrcb += 3;
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xIndex++;
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pdstb += 3;
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}
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pdst = pdstNext;
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#else /* PSZ == 24 */
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if (srcBit + w <= PPW)
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{
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getbits(psrc, srcBit, w, tmpSrc);
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putbits(tmpSrc, 0, w, pdst, ~((CfbBits)0));
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pdst++;
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}
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else
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{
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maskbits(ppt->x, w, startmask, endmask, nlMiddle);
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nstart = 0;
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if (startmask)
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{
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nstart = PPW - srcBit;
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getbits(psrc, srcBit, nstart, tmpSrc);
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putbits(tmpSrc, 0, nstart, pdst, ~((CfbBits)0));
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if(srcBit + nstart >= PPW)
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psrc++;
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}
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nl = nlMiddle;
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while (nl--)
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{
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tmpSrc = *psrc;
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putbits(tmpSrc, nstart, PPW, pdst, ~((CfbBits)0));
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psrc++;
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pdst++;
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}
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if (endmask)
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{
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#if PSZ != 32 || PPW != 1
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nend = xEnd & PIM;
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#endif
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getbits(psrc, 0, nend, tmpSrc);
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putbits(tmpSrc, nstart, nend, pdst, ~((CfbBits)0));
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}
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pdst = pdstNext;
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}
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#endif /* PSZ == 24 */
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ppt++;
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pwidth++;
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}
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}
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