First import

[xorg_rtime.git] / xorg-server-1.4 / mfb / mfbfillsp.c

/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
/***********************************************************

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 <dix-config.h>
#endif

#include <X11/X.h>
#include <X11/Xmd.h>
#include "gcstruct.h"
#include "window.h"
#include "pixmapstr.h"
#include "scrnintstr.h"
#include "windowstr.h"
#include "mfb.h"
#include "maskbits.h"

#include "mergerop.h"

#include "servermd.h"
#include "mi.h"
#include "mispans.h"

/* scanline filling for monochrome frame buffer
   written by drewry, oct 1986

   these routines all clip.  they assume that anything that has called
them has already translated the points (i.e. pGC->miTranslate is
non-zero, which is howit gets set in mfbCreateGC().)

   the number of new scnalines created by clipping ==
MaxRectsPerBand * nSpans.

    FillSolid is overloaded to be used for OpaqueStipple as well,
if fgPixel == bgPixel.  


    FillTiled is overloaded to be used for OpaqueStipple, if
fgPixel != bgPixel.  based on the fill style, it uses
{RotatedPixmap, gc.alu} or {RotatedPixmap, PrivGC.ropOpStip}
*/


void
mfbBlackSolidFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GCPtr       pGC;
    int         nInit;          /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int         *pwidthInit;    /* pointer to list of n widths */
    int         fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int nlwidth;                /* width in longwords of bitmap */
    register PixelType *addrl;/* pointer to current longword in bitmap */
    register int nlmiddle;
    register PixelType startmask;
    register PixelType endmask;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit,
                    ppt, pwidth, fSorted);

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    while (n--)
    {
        addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);

        if (*pwidth)
        {
            if ( ((ppt->x & PIM) + *pwidth) < PPW)
            {
                /* all bits inside same longword */
                maskpartialbits(ppt->x, *pwidth, startmask);
                    *addrl &= ~startmask;
            }
            else
            {
                maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
                if (startmask)
                    *addrl++ &= ~startmask;
                Duff (nlmiddle, *addrl++ = 0x0);
                if (endmask)
                    *addrl &= ~endmask;
            }
        }
        pwidth++;
        ppt++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}



void
mfbWhiteSolidFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GCPtr       pGC;
    int         nInit;          /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int         *pwidthInit;    /* pointer to list of n widths */
    int         fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int nlwidth;                /* width in longwords of bitmap */
    register PixelType *addrl;/* pointer to current longword in bitmap */
    register int nlmiddle;
    register PixelType startmask;
    register PixelType endmask;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit,
                    ppt, pwidth, fSorted);

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    while (n--)
    {
        addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);

        if (*pwidth)
        {
            if ( ((ppt->x & PIM) + *pwidth) < PPW)
            {
                /* all bits inside same longword */
                maskpartialbits(ppt->x, *pwidth, startmask);
                *addrl |= startmask;
            }
            else
            {
                maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
                if (startmask)
                    *addrl++ |= startmask;
                Duff (nlmiddle, *addrl++ = ~0);
                if (endmask)
                    *addrl |= endmask;
            }
        }
        pwidth++;
        ppt++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}



void
mfbInvertSolidFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GCPtr       pGC;
    int         nInit;          /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int         *pwidthInit;    /* pointer to list of n widths */
    int         fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int nlwidth;                /* width in longwords of bitmap */
    register PixelType *addrl;/* pointer to current longword in bitmap */
    register int nlmiddle;
    register PixelType startmask;
    register PixelType endmask;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit,
                    ppt, pwidth, fSorted);

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    while (n--)
    {
        addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);

        if (*pwidth)
        {
            if ( ((ppt->x & PIM) + *pwidth) < PPW)
            {
                /* all bits inside same longword */
                maskpartialbits(ppt->x, *pwidth, startmask);
                *addrl ^= startmask;
            }
            else
            {
                maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
                if (startmask)
                    *addrl++ ^= startmask;
                Duff (nlmiddle, *addrl++ ^= ~0);
                if (endmask)
                    *addrl ^= endmask;
            }
        }
        pwidth++;
        ppt++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}


void 
mfbWhiteStippleFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GC *pGC;
    int nInit;                  /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int *pwidthInit;            /* pointer to list of n widths */
    int fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int nlwidth;                /* width in longwords of bitmap */
    register PixelType *addrl;/* pointer to current longword in bitmap */
    register PixelType src;
    register int nlmiddle;
    register PixelType startmask;
    register PixelType endmask;
    PixmapPtr pStipple;
    PixelType *psrc;
    int tileHeight;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit, 
                    ppt, pwidth, fSorted);

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    pStipple = pGC->pRotatedPixmap;
    tileHeight = pStipple->drawable.height;
    psrc = (PixelType *)(pStipple->devPrivate.ptr);

    while (n--)
    {
        addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);
        src = psrc[ppt->y % tileHeight];

        /* all bits inside same longword */
        if ( ((ppt->x & PIM) + *pwidth) < PPW)
        {
            maskpartialbits(ppt->x, *pwidth, startmask);
            *addrl |= (src & startmask);
        }
        else
        {
            maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
            if (startmask)
                *addrl++ |= (src & startmask);
            Duff (nlmiddle, *addrl++ |= src);
            if (endmask)
                *addrl |= (src & endmask);
        }
        pwidth++;
        ppt++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}


void 
mfbBlackStippleFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GC *pGC;
    int nInit;                  /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int *pwidthInit;            /* pointer to list of n widths */
    int fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int nlwidth;                /* width in longwords of bitmap */
    register PixelType *addrl;  /* pointer to current longword in bitmap */
    register PixelType src;
    register int nlmiddle;
    register PixelType startmask;
    register PixelType endmask;
    PixmapPtr pStipple;
    PixelType *psrc;
    int tileHeight;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit, 
                    ppt, pwidth, fSorted);

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    pStipple = pGC->pRotatedPixmap;
    tileHeight = pStipple->drawable.height;
    psrc = (PixelType *)(pStipple->devPrivate.ptr);

    while (n--)
    {
        addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);
        src = psrc[ppt->y % tileHeight];

        /* all bits inside same longword */
        if ( ((ppt->x & PIM) + *pwidth) < PPW)
        {
            maskpartialbits(ppt->x, *pwidth, startmask);
            *addrl &= ~(src & startmask);
        }
        else
        {
            maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
            if (startmask)
                *addrl++ &= ~(src & startmask);
            Duff (nlmiddle, *addrl++ &= ~src);
            if (endmask)
                *addrl &= ~(src & endmask);
        }
        pwidth++;
        ppt++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}


void 
mfbInvertStippleFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GC *pGC;
    int nInit;                  /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int *pwidthInit;            /* pointer to list of n widths */
    int fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int nlwidth;                /* width in longwords of bitmap */
    register PixelType *addrl;  /* pointer to current longword in bitmap */
    register PixelType src;
    register int nlmiddle;
    register PixelType startmask;
    register PixelType endmask;
    PixmapPtr pStipple;
    PixelType *psrc;
    int tileHeight;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit, 
                    ppt, pwidth, fSorted);

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    pStipple = pGC->pRotatedPixmap;
    tileHeight = pStipple->drawable.height;
    psrc = (PixelType *)(pStipple->devPrivate.ptr);

    while (n--)
    {
        addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);
        src = psrc[ppt->y % tileHeight];

        /* all bits inside same longword */
        if ( ((ppt->x & PIM) + *pwidth) < PPW)
        {
            maskpartialbits(ppt->x, *pwidth, startmask);
            *addrl ^= (src & startmask);
        }
        else
        {
            maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
            if (startmask)
                *addrl++ ^= (src & startmask);
            Duff(nlmiddle, *addrl++ ^= src);
            if (endmask)
                *addrl ^= (src & endmask);
        }
        pwidth++;
        ppt++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}


/* this works with tiles of width == PPW */
#define FILLSPANPPW(ROP) \
    while (n--) \
    { \
        if (*pwidth) \
        { \
            addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth); \
            src = psrc[ppt->y % tileHeight]; \
            if ( ((ppt->x & PIM) + *pwidth) < PPW) \
            { \
                maskpartialbits(ppt->x, *pwidth, startmask); \
                *addrl = (*addrl & ~startmask) | \
                         (ROP(src, *addrl) & startmask); \
            } \
            else \
            { \
                maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle); \
                if (startmask) \
                { \
                    *addrl = (*addrl & ~startmask) | \
                             (ROP(src, *addrl) & startmask); \
                    addrl++; \
                } \
                while (nlmiddle--) \
                { \
                    *addrl = ROP(src, *addrl); \
                    addrl++; \
                } \
                if (endmask) \
                    *addrl = (*addrl & ~endmask) | \
                             (ROP(src, *addrl) & endmask); \
            } \
        } \
        pwidth++; \
        ppt++; \
    }



void
mfbTileFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GC *pGC;
    int nInit;                  /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int *pwidthInit;            /* pointer to list of n widths */
    int fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int nlwidth;                /* width in longwords of bitmap */
    register PixelType *addrl;  /* pointer to current longword in bitmap */
    register PixelType src;
    register int nlmiddle;
    register PixelType startmask;
    register PixelType endmask;
    PixmapPtr pTile;
    PixelType *psrc;
    int tileHeight;
    int rop;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;
    MfbBits   flip;


    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit, 
                    ppt, pwidth, fSorted);

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    pTile = pGC->pRotatedPixmap;
    tileHeight = pTile->drawable.height;
    psrc = (PixelType *)(pTile->devPrivate.ptr);
    if (pGC->fillStyle == FillTiled)
        rop = pGC->alu;
    else
        rop = ((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->ropOpStip;

    flip = 0;
    switch(rop)
    {
      case GXcopyInverted:  /* for opaque stipples */
        flip = ~0;
      case GXcopy:
        {

#define DoMaskCopyRop(src,dst,mask)     (((dst) & ~(mask)) | ((src) & (mask)))

            while (n--)
            {
                if (*pwidth)
                {
                    addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);
                    src = psrc[ppt->y % tileHeight] ^ flip;
                    if ( ((ppt->x & PIM) + *pwidth) < PPW)
                    {
                        maskpartialbits(ppt->x, *pwidth, startmask);
                        *addrl = DoMaskCopyRop (src, *addrl, startmask);
                    }
                    else
                    {
                        maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
                        if (startmask)
                        {
                            *addrl = DoMaskCopyRop (src, *addrl, startmask);
                            addrl++;
                        }
                        while (nlmiddle--)
                        {
                            *addrl = src;
                            addrl++;
                        }
                        if (endmask)
                            *addrl = DoMaskCopyRop (src, *addrl, endmask);
                    }
                }
                pwidth++;
                ppt++;
            }
        }
        break;
      default:
        {
            register DeclareMergeRop ();

            InitializeMergeRop(rop,~0);
            while (n--)
            {
                if (*pwidth)
                {
                    addrl = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);
                    src = psrc[ppt->y % tileHeight];
                    if ( ((ppt->x & PIM) + *pwidth) < PPW)
                    {
                        maskpartialbits(ppt->x, *pwidth, startmask);
                        *addrl = DoMaskMergeRop (src, *addrl, startmask);
                    }
                    else
                    {
                        maskbits(ppt->x, *pwidth, startmask, endmask, nlmiddle);
                        if (startmask)
                        {
                            *addrl = DoMaskMergeRop (src, *addrl, startmask);
                            addrl++;
                        }
                        while (nlmiddle--)
                        {
                            *addrl = DoMergeRop (src, *addrl);
                            addrl++;
                        }
                        if (endmask)
                            *addrl = DoMaskMergeRop (src, *addrl, endmask);
                    }
                }
                pwidth++;
                ppt++;
            }
        }
        break;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}


/* Fill spans with tiles that aren't PPW bits wide */
void
mfbUnnaturalTileFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GC          *pGC;
    int         nInit;          /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int *pwidthInit;            /* pointer to list of n widths */
    int fSorted;
{
    int         iline;          /* first line of tile to use */
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    PixelType *addrlBase;       /* pointer to start of bitmap */
    int          nlwidth;       /* width in longwords of bitmap */
    register PixelType *pdst;/* pointer to current word in bitmap */
    register PixelType *psrc;/* pointer to current word in tile */
    register int nlMiddle;
    register int rop, nstart;
    PixelType startmask;
    PixmapPtr   pTile;          /* pointer to tile we want to fill with */
    int         w, width, x, xSrc, ySrc, srcStartOver, nend;
    int         tlwidth, rem, tileWidth, tileHeight, endinc;
    PixelType      endmask, *psrcT;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit, 
                    ppt, pwidth, fSorted);

    if (pGC->fillStyle == FillTiled)
    {
        pTile = pGC->tile.pixmap;
        tlwidth = pTile->devKind / PGSZB;
        rop = pGC->alu;
    }
    else
    {
        pTile = pGC->stipple;
        tlwidth = pTile->devKind / PGSZB;
        rop = ((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->ropOpStip;
    }

    xSrc = pDrawable->x;
    ySrc = pDrawable->y;

    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    tileWidth = pTile->drawable.width;
    tileHeight = pTile->drawable.height;

    /* this replaces rotating the tile. Instead we just adjust the offset
     * at which we start grabbing bits from the tile.
     * Ensure that ppt->x - xSrc >= 0 and ppt->y - ySrc >= 0,
     * so that iline and rem always stay within the tile bounds.
     */
    xSrc += (pGC->patOrg.x % tileWidth) - tileWidth;
    ySrc += (pGC->patOrg.y % tileHeight) - tileHeight;

    while (n--)
    {
        iline = (ppt->y - ySrc) % tileHeight;
        pdst = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);
        psrcT = (PixelType *) pTile->devPrivate.ptr + (iline * tlwidth);
        x = ppt->x;

        if (*pwidth)
        {
            width = *pwidth;
            while(width > 0)
            {
                psrc = psrcT;
                w = min(tileWidth, width);
                if((rem = (x - xSrc)  % tileWidth) != 0)
                {
                    /* if we're in the middle of the tile, get
                       as many bits as will finish the span, or
                       as many as will get to the left edge of the tile,
                       or a longword worth, starting at the appropriate
                       offset in the tile.
                    */
                    w = min(min(tileWidth - rem, width), BITMAP_SCANLINE_PAD);
                    endinc = rem / BITMAP_SCANLINE_PAD;
                    getandputrop((psrc+endinc), (rem&PIM), (x & PIM), w, pdst, rop);
                    if((x & PIM) + w >= PPW)
                        pdst++;
                }
                else if(((x & PIM) + w) < PPW)
                {
                    /* doing < PPW bits is easy, and worth special-casing */
                    putbitsrop(*psrc, x & PIM, w, pdst, rop);
                }
                else
                {
                    /* start at the left edge of the tile,
                       and put down as much as we can
                    */
                    maskbits(x, w, startmask, endmask, nlMiddle);

                    if (startmask)
                        nstart = PPW - (x & PIM);
                    else
                        nstart = 0;
                    if (endmask)
                        nend = (x + w)  & PIM;
                    else
                        nend = 0;

                    srcStartOver = nstart > PLST;

                    if(startmask)
                    {
                        putbitsrop(*psrc, (x & PIM), nstart, pdst, rop);
                        pdst++;
#if defined(__alpha__) || defined(__alpha)
                        /*
                         * XXX workaround an egcs 1.1.2 code generation
                         * bug. This version might actually be faster.
                         */
                        psrc += srcStartOver;
#else
                        if(srcStartOver)
                            psrc++;
#endif
                    }
                     
                    while(nlMiddle--)
                    {
                            getandputrop0(psrc, nstart, PPW, pdst, rop);
                            pdst++;
                            psrc++;
                    }
                    if(endmask)
                    {
                        getandputrop0(psrc, nstart, nend, pdst, rop);
                    }
                 }
                 x += w;
                 width -= w;
            }
        }
        ppt++;
        pwidth++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}


/* Fill spans with stipples that aren't PPW bits wide */
void
mfbUnnaturalStippleFS(pDrawable, pGC, nInit, pptInit, pwidthInit, fSorted)
    DrawablePtr pDrawable;
    GC          *pGC;
    int         nInit;          /* number of spans to fill */
    DDXPointPtr pptInit;        /* pointer to list of start points */
    int *pwidthInit;            /* pointer to list of n widths */
    int fSorted;
{
                                /* next three parameters are post-clip */
    int n;                      /* number of spans to fill */
    register DDXPointPtr ppt;   /* pointer to list of start points */
    register int *pwidth;       /* pointer to list of n widths */
    int         iline;          /* first line of tile to use */
    PixelType           *addrlBase;     /* pointer to start of bitmap */
    int          nlwidth;       /* width in longwords of bitmap */
    register PixelType *pdst;           /* pointer to current word in bitmap */
    register PixelType *psrc;           /* pointer to current word in tile */
    register int nlMiddle;
    register int rop, nstart;
    PixelType startmask;
    PixmapPtr   pTile;          /* pointer to tile we want to fill with */
    int         w, width,  x, xSrc, ySrc, srcStartOver, nend;
    PixelType   endmask, *psrcT;
    int         tlwidth, rem, tileWidth, endinc;
    int         tileHeight;
    int *pwidthFree;            /* copies of the pointers to free */
    DDXPointPtr pptFree;

    if (!(pGC->planemask & 1))
        return;

    n = nInit * miFindMaxBand(pGC->pCompositeClip);
    pwidthFree = (int *)ALLOCATE_LOCAL(n * sizeof(int));
    pptFree = (DDXPointRec *)ALLOCATE_LOCAL(n * sizeof(DDXPointRec));
    if(!pptFree || !pwidthFree)
    {
        if (pptFree) DEALLOCATE_LOCAL(pptFree);
        if (pwidthFree) DEALLOCATE_LOCAL(pwidthFree);
        return;
    }
    pwidth = pwidthFree;
    ppt = pptFree;
    n = miClipSpans(pGC->pCompositeClip, pptInit, pwidthInit, nInit, 
                    ppt, pwidth, fSorted);

    pTile = pGC->stipple;
    rop = ((mfbPrivGC *)(pGC->devPrivates[mfbGCPrivateIndex].ptr))->rop;
    tlwidth = pTile->devKind / PGSZB;
    xSrc = pDrawable->x;
    ySrc = pDrawable->y;
    mfbGetPixelWidthAndPointer(pDrawable, nlwidth, addrlBase);

    tileWidth = pTile->drawable.width;
    tileHeight = pTile->drawable.height;

    /* this replaces rotating the stipple.  Instead, we just adjust the offset
     * at which we start grabbing bits from the stipple.
     * Ensure that ppt->x - xSrc >= 0 and ppt->y - ySrc >= 0,
     * so that iline and rem always stay within the tile bounds.
     */
    xSrc += (pGC->patOrg.x % tileWidth) - tileWidth;
    ySrc += (pGC->patOrg.y % tileHeight) - tileHeight;
    while (n--)
    {
        iline = (ppt->y - ySrc) % tileHeight;
        pdst = mfbScanline(addrlBase, ppt->x, ppt->y, nlwidth);
        psrcT = (PixelType *) pTile->devPrivate.ptr + (iline * tlwidth);
        x = ppt->x;

        if (*pwidth)
        {
            width = *pwidth;
            while(width > 0)
            {
                psrc = psrcT;
                w = min(tileWidth, width);
                if((rem = (x - xSrc) % tileWidth) != 0)
                {
                    /* if we're in the middle of the tile, get
                       as many bits as will finish the span, or
                       as many as will get to the left edge of the tile,
                       or a longword worth, starting at the appropriate
                       offset in the tile.
                    */
                    w = min(min(tileWidth - rem, width), BITMAP_SCANLINE_PAD);
                    endinc = rem / BITMAP_SCANLINE_PAD;
                    getandputrrop((psrc + endinc), (rem & PIM), (x & PIM),
                                 w, pdst, rop)
                    if((x & PIM) + w >= PPW)
                        pdst++;
                }

                else if(((x & PIM) + w) < PPW)
                {
                    /* doing < PPW bits is easy, and worth special-casing */
                    putbitsrrop(*psrc, x & PIM, w, pdst, rop);
                }
                else
                {
                    /* start at the left edge of the tile,
                       and put down as much as we can
                    */
                    maskbits(x, w, startmask, endmask, nlMiddle);

                    if (startmask)
                        nstart = PPW - (x & PIM);
                    else
                        nstart = 0;
                    if (endmask)
                        nend = (x + w)  & PIM;
                    else
                        nend = 0;

                    srcStartOver = nstart > PLST;

                    if(startmask)
                    {
                        putbitsrrop(*psrc, (x & PIM), nstart, pdst, rop);
                        pdst++;
                        if(srcStartOver)
                            psrc++;
                    }
                     
                    while(nlMiddle--)
                    {
                            getandputrrop0(psrc, nstart, PPW, pdst, rop);
                            pdst++;
                            psrc++;
                    }
                    if(endmask)
                    {
                        getandputrrop0(psrc, nstart, nend, pdst, rop);
                    }
                 }
                 x += w;
                 width -= w;
            }
        }
        ppt++;
        pwidth++;
    }
    DEALLOCATE_LOCAL(pptFree);
    DEALLOCATE_LOCAL(pwidthFree);
}