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+/* 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.
+
+******************************************************************/
+/* $Xorg: mfbpntarea.c,v 1.4 2001/02/09 02:05:19 xorgcvs Exp $ */
+#include "X.h"
+
+#include "windowstr.h"
+#include "regionstr.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+
+#include "mfb.h"
+#include "maskbits.h"
+
+/*
+ the solid fillers are called for rectangles and window backgrounds.
+ the boxes are already translated.
+ maybe this should always take a pixmap instead of a drawable?
+
+ NOTE:
+ iy = ++iy < tileHeight ? iy : 0
+is equivalent to iy%= tileheight, and saves a division.
+*/
+
+/*
+ MFBSOLIDFILLAREA OPEQ EQWHOLEOWRD
+ mfbSolidWhiteArea |= = ~0
+ mfbSolidBlackArea &=~ = 0
+ mfbSolidInvertArea ^= ^= ~0
+
+EQWHOLEWORD is used to write whole longwords. it could use OPEQ,
+but *p++ |= ~0 on at least two compilers generates much
+worse code than *p++ = ~0. similarly for *p++ &= ~~0
+and *p++ = 0.
+
+*/
+
+/*ARGSUSED*/
+void
+MFBSOLIDFILLAREA(pDraw, nbox, pbox, alu, nop)
+ DrawablePtr pDraw;
+ int nbox;
+ BoxPtr pbox;
+ int alu;
+ PixmapPtr nop;
+{
+ int nlwidth; /* width in longwords of the drawable */
+ int w; /* width of current box */
+ register int h; /* height of current box */
+ register PixelType *p; /* pointer to bits we're writing */
+ register int nlw; /* loop version of nlwMiddle */
+ register PixelType startmask;
+ register PixelType endmask;/* masks for reggedy bits at either end of line */
+ register int nlwExtra;
+ /* to get from right of box to left of next span */
+ int nlwMiddle; /* number of longwords between sides of boxes */
+ PixelType *pbits; /* pointer to start of drawable */
+
+ mfbGetPixelWidthAndPointer(pDraw, nlwidth, pbits);
+
+ while (nbox--)
+ {
+ w = pbox->x2 - pbox->x1;
+ h = pbox->y2 - pbox->y1;
+ p = mfbScanline(pbits, pbox->x1, pbox->y1, nlwidth);
+
+ if ( ((pbox->x1 & PIM) + w) < PPW)
+ {
+ maskpartialbits(pbox->x1, w, startmask);
+ nlwExtra = nlwidth;
+ Duff(h, *p OPEQ startmask; mfbScanlineInc(p, nlwExtra));
+ }
+ else
+ {
+ maskbits(pbox->x1, w, startmask, endmask, nlwMiddle);
+ nlwExtra = nlwidth - nlwMiddle;
+
+ if (startmask && endmask)
+ {
+ nlwExtra -= 1;
+ while (h--)
+ {
+ nlw = nlwMiddle;
+ *p OPEQ startmask;
+ p++;
+ Duff(nlw, *p++ EQWHOLEWORD);
+ *p OPEQ endmask;
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ else if (startmask && !endmask)
+ {
+ nlwExtra -= 1;
+ while (h--)
+ {
+ nlw = nlwMiddle;
+ *p OPEQ startmask;
+ p++;
+ Duff(nlw, *p++ EQWHOLEWORD);
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ else if (!startmask && endmask)
+ {
+ while (h--)
+ {
+ nlw = nlwMiddle;
+ Duff(nlw, *p++ EQWHOLEWORD);
+ *p OPEQ endmask;
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ else /* no ragged bits at either end */
+ {
+ while (h--)
+ {
+ nlw = nlwMiddle;
+ Duff(nlw, *p++ EQWHOLEWORD);
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ }
+ pbox++;
+ }
+}
+
+
+
+/* stipple a list of boxes
+
+you can use the reduced rasterop for stipples. if rrop is
+black, AND the destination with (not stipple pattern). if rrop is
+white OR the destination with the stipple pattern. if rrop is invert,
+XOR the destination with the stipple pattern.
+
+ MFBSTIPPLEFILLAREA OPEQ
+ mfbStippleWhiteArea |=
+ mfbStippleBlackArea &=~
+ mfbStippleInveryArea ^=
+*/
+
+/*ARGSUSED*/
+void
+MFBSTIPPLEFILLAREA(pDraw, nbox, pbox, alu, pstipple)
+ DrawablePtr pDraw;
+ int nbox;
+ BoxPtr pbox;
+ int alu;
+ PixmapPtr pstipple;
+{
+ register PixelType *psrc;
+ /* pointer to bits in tile, if needed */
+ int tileHeight; /* height of the tile */
+ register PixelType srcpix;
+
+ int nlwidth; /* width in longwords of the drawable */
+ int w; /* width of current box */
+ register int nlw; /* loop version of nlwMiddle */
+ register PixelType *p; /* pointer to bits we're writing */
+ register int h; /* height of current box */
+ PixelType startmask;
+ PixelType endmask; /* masks for reggedy bits at either end of line */
+ int nlwMiddle; /* number of longwords between sides of boxes */
+ int nlwExtra; /* to get from right of box to left of next span */
+ register int iy; /* index of current scanline in tile */
+ PixelType *pbits; /* pointer to start of drawable */
+
+ mfbGetPixelWidthAndPointer(pDraw, nlwidth, pbits);
+
+ tileHeight = pstipple->drawable.height;
+ psrc = (PixelType *)(pstipple->devPrivate.ptr);
+
+ while (nbox--)
+ {
+ w = pbox->x2 - pbox->x1;
+ h = pbox->y2 - pbox->y1;
+ iy = pbox->y1 % tileHeight;
+ p = mfbScanline(pbits, pbox->x1, pbox->y1, nlwidth);
+
+ if ( ((pbox->x1 & PIM) + w) < PPW)
+ {
+ maskpartialbits(pbox->x1, w, startmask);
+ nlwExtra = nlwidth;
+ while (h--)
+ {
+ srcpix = psrc[iy];
+ iy = ++iy < tileHeight ? iy : 0;
+ *p OPEQ (srcpix & startmask);
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ else
+ {
+ maskbits(pbox->x1, w, startmask, endmask, nlwMiddle);
+ nlwExtra = nlwidth - nlwMiddle;
+
+ if (startmask && endmask)
+ {
+ nlwExtra -= 1;
+ while (h--)
+ {
+ srcpix = psrc[iy];
+ iy = ++iy < tileHeight ? iy : 0;
+ nlw = nlwMiddle;
+ *p OPEQ (srcpix & startmask);
+ p++;
+ Duff (nlw, *p++ OPEQ srcpix);
+ *p OPEQ (srcpix & endmask);
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ else if (startmask && !endmask)
+ {
+ nlwExtra -= 1;
+ while (h--)
+ {
+ srcpix = psrc[iy];
+ iy = ++iy < tileHeight ? iy : 0;
+ nlw = nlwMiddle;
+ *p OPEQ (srcpix & startmask);
+ p++;
+ Duff(nlw, *p++ OPEQ srcpix);
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ else if (!startmask && endmask)
+ {
+ while (h--)
+ {
+ srcpix = psrc[iy];
+ iy = ++iy < tileHeight ? iy : 0;
+ nlw = nlwMiddle;
+ Duff(nlw, *p++ OPEQ srcpix);
+ *p OPEQ (srcpix & endmask);
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ else /* no ragged bits at either end */
+ {
+ while (h--)
+ {
+ srcpix = psrc[iy];
+ iy = ++iy < tileHeight ? iy : 0;
+ nlw = nlwMiddle;
+ Duff(nlw, *p++ OPEQ srcpix);
+ mfbScanlineInc(p, nlwExtra);
+ }
+ }
+ }
+ pbox++;
+ }
+}
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