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-rw-r--r--nx-X11/programs/Xserver/ilbm/ilbmtile.c857
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diff --git a/nx-X11/programs/Xserver/ilbm/ilbmtile.c b/nx-X11/programs/Xserver/ilbm/ilbmtile.c
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--- /dev/null
+++ b/nx-X11/programs/Xserver/ilbm/ilbmtile.c
@@ -0,0 +1,857 @@
+/* $XFree86$ */
+/* Combined Purdue/PurduePlus patches, level 2.0, 1/17/89 */
+/***********************************************************
+
+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.
+
+******************************************************************/
+/* $XConsortium: ilbmtile.c,v 5.8 94/04/17 20:28:36 dpw Exp $ */
+
+/* Modified jun 95 by Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
+ to use interleaved bitplanes instead of normal bitplanes */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+
+#include "windowstr.h"
+#include "regionstr.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+
+#include "ilbm.h"
+#include "maskbits.h"
+
+#include "mergerop.h"
+/*
+
+ the boxes are already translated.
+
+ NOTE:
+ iy = ++iy < tileHeight ? iy : 0
+is equivalent to iy%= tileheight, and saves a division.
+*/
+
+/*
+ tile area with a PPW bit wide pixmap
+*/
+void
+MROP_NAME(ilbmTileAreaPPW)(pDraw, nbox, pbox, alu, ptile, planemask)
+ DrawablePtr pDraw;
+ int nbox;
+ BoxPtr pbox;
+ int alu;
+ PixmapPtr ptile;
+ unsigned long planemask;
+{
+ 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 */
+ MROP_DECLARE_REG ()
+ register int h; /* height of current box */
+ register int nlw; /* loop version of nlwMiddle */
+ register PixelType *p; /* pointer to bits we're writing */
+ int auxDst;
+ int depthDst;
+ int tlwidth;
+ register int d;
+ 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 */
+ PixelType *saveP;
+ PixelType *pSaveSrc;
+ int saveH;
+ int saveIY;
+
+ ilbmGetPixelWidthAuxDepthAndPointer(pDraw, nlwidth, auxDst, depthDst,
+ pbits);
+
+ MROP_INITIALIZE(alu,~0)
+
+ tileHeight = ptile->drawable.height;
+ tlwidth = ptile->devKind/sizeof(PixelType);
+ pSaveSrc = (PixelType *)(ptile->devPrivate.ptr);
+
+ while (nbox--) {
+ w = pbox->x2 - pbox->x1;
+ saveH = pbox->y2 - pbox->y1;
+ saveIY = pbox->y1 % tileHeight;
+ saveP = ilbmScanline(pbits, pbox->x1, pbox->y1, auxDst);
+ psrc = pSaveSrc;
+
+ if (((pbox->x1 & PIM) + w) < PPW) {
+ maskpartialbits(pbox->x1, w, startmask);
+ nlwExtra = auxDst;
+ for (d = 0; d < depthDst; d++, saveP += nlwidth, psrc += tileHeight) { /* @@@ NEXT PLANE @@@ */
+ if (!(planemask & (1 << d)))
+ continue;
+
+ p = saveP;
+ h = saveH;
+ iy = saveIY;
+
+ while (h--) {
+ srcpix = psrc[iy];
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ *p = MROP_MASK(srcpix,*p,startmask);
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ }
+ } else {
+ maskbits(pbox->x1, w, startmask, endmask, nlwMiddle);
+
+ for (d = 0; d < depthDst; d++, saveP += nlwidth, psrc += tileHeight) { /* @@@ NEXT PLANE @@@ */
+ if (!(planemask & (1 << d)))
+ continue;
+
+ p = saveP;
+ h = saveH;
+ iy = saveIY;
+ nlwExtra = auxDst - nlwMiddle;
+
+ if (startmask && endmask) {
+ nlwExtra -= 1;
+ while (h--) {
+ srcpix = psrc[iy];
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ *p = MROP_MASK (srcpix,*p,startmask);
+ p++;
+ while (nlw--) {
+ *p = MROP_SOLID(srcpix,*p);
+ p++;
+ }
+
+ *p = MROP_MASK(srcpix,*p,endmask);
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ } else if (startmask && !endmask) {
+ nlwExtra -= 1;
+ while (h--) {
+ srcpix = psrc[iy];
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ *p = MROP_MASK(srcpix,*p,startmask);
+ p++;
+ while (nlw--) {
+ *p = MROP_SOLID(srcpix,*p);
+ p++;
+ }
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ } else if (!startmask && endmask) {
+ while (h--) {
+ srcpix = psrc[iy];
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ while (nlw--) {
+ *p = MROP_SOLID(srcpix,*p);
+ p++;
+ }
+
+ *p = MROP_MASK(srcpix,*p,endmask);
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ } else { /* no ragged bits at either end */
+ while (h--) {
+ srcpix = psrc[iy];
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ while (nlw--) {
+ *p = MROP_SOLID (srcpix,*p);
+ p++;
+ }
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ }
+ } /* for (d = ...) */
+ }
+ pbox++;
+ }
+}
+
+void
+MROP_NAME(ilbmTileArea)(pDraw, nbox, pbox, alu, pTile, xOff, yOff, planemask)
+ DrawablePtr pDraw;
+ int nbox;
+ BoxPtr pbox;
+ int alu;
+ PixmapPtr pTile;
+ int xOff;
+ int yOff;
+ unsigned long planemask;
+{
+ register PixelType *psrc;
+ /* pointer to bits in tile, if needed */
+ int nlwidth; /* width in longwords of the drawable */
+ MROP_DECLARE_REG ()
+ register int h; /* height of current box */
+ register PixelType *pdst; /* pointer to bits we're writing */
+ register PixelType tmpsrc, tmpdst;
+ int auxDst;
+ int depthDst;
+ int sizeTile;
+ int tileLine;
+ int iline;
+ int w, width, x, xSrc, ySrc, srcStartOver, nend;
+ int tlwidth, rem, tileWidth, tileHeight, endinc;
+ int saveW;
+ PixelType *psrcT;
+ int d;
+ int nstart;
+ PixelType startmask;
+ PixelType endmask; /* masks for reggedy bits at either end of line */
+ int nlMiddle; /* number of longwords between sides of boxes */
+ int iy;
+ PixelType *pBase; /* pointer to start of drawable */
+ PixelType *saveP;
+ PixelType *pStartDst;
+ PixelType *pStartTile;
+ int saveH;
+
+ ilbmGetPixelWidthAuxDepthAndPointer(pDraw, nlwidth, auxDst, depthDst,
+ pBase);
+
+ MROP_INITIALIZE(alu,~0)
+
+ tileHeight = pTile->drawable.height;
+ tileWidth = pTile->drawable.width;
+ tlwidth = pTile->devKind/sizeof(PixelType);
+ sizeTile = tlwidth * tileHeight;
+
+ xSrc = pDraw->x + ((xOff % tileWidth) - tileWidth);
+ ySrc = pDraw->y + ((yOff % tileHeight) - tileHeight);
+
+ while (nbox--) {
+ saveW = pbox->x2 - pbox->x1;
+ iline = (pbox->y1 - ySrc) % tileHeight;
+ psrcT = (PixelType *) pTile->devPrivate.ptr;
+ tileLine = iline * tlwidth;
+ saveH = pbox->y2 - pbox->y1;
+ saveP = ilbmScanline(pBase, pbox->x1, pbox->y1, auxDst);
+
+ for (d = 0; d < depthDst; d++, psrcT += sizeTile, saveP += nlwidth) { /* @@@ NEXT PLANE @@@ */
+ if (!(planemask & (1 << d)))
+ continue;
+
+ h = saveH;
+ pStartDst = saveP;
+ pStartTile = psrcT + tileLine;
+ iy = iline;
+
+ while (h--) {
+ x = pbox->x1;
+ width = saveW;
+ pdst = pStartDst;
+ while (width > 0) {
+ psrc = pStartTile;
+ 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;
+
+ getbits ((psrc+endinc), (rem&PIM), w, tmpsrc);
+#if (MROP) != Mcopy
+ getbits (pdst, (x & PIM), w, tmpdst);
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, (x & PIM), w, pdst);
+
+ if ((x & PIM) + w >= PPW)
+ pdst++;
+ } else if (((x & PIM) + w) < PPW) {
+ /* doing < PPW bits is easy, and worth special-casing */
+ tmpsrc = *psrc;
+#if (MROP) != Mcopy
+ getbits (pdst, (x & PIM), w, tmpdst);
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, (x & PIM), w, pdst);
+ } 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) {
+ tmpsrc = *psrc;
+#if (MROP) != Mcopy
+ getbits (pdst, (x & PIM), nstart, tmpdst);
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, (x & PIM), nstart, pdst);
+ pdst++;
+ if (srcStartOver)
+ psrc++;
+ }
+
+ while (nlMiddle--) {
+ getbits (psrc, nstart, PPW, tmpsrc);
+#if (MROP) != Mcopy
+ tmpdst = *pdst;
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ *pdst++ = tmpsrc;
+ /*putbits (tmpsrc, 0, PPW, pdst);
+ pdst++;*/
+ psrc++;
+ }
+
+ if (endmask) {
+ getbits (psrc, nstart, nend, tmpsrc);
+#if (MROP) != Mcopy
+ tmpdst = *pdst;
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, 0, nend, pdst);
+ }
+ }
+ x += w;
+ width -= w;
+ } /* while (width > 0) */
+
+ pStartDst += auxDst;
+ if (++iy >= tileHeight) {
+ iy = 0;
+ pStartTile = psrcT;
+ } else
+ pStartTile += tlwidth;
+
+ } /* while (h) */
+ } /* for (d = ... ) */
+ pbox++;
+ } /* for each box */
+}
+
+void
+MROP_NAME(ilbmOpaqueStippleAreaPPW)(pDraw, nbox, pbox, alu, ptile,
+ rropsOS, planemask)
+ DrawablePtr pDraw;
+ int nbox;
+ BoxPtr pbox;
+ int alu;
+ PixmapPtr ptile;
+ register unsigned char *rropsOS;
+ unsigned long planemask;
+{
+ 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 */
+ MROP_DECLARE_REG ()
+ register int h; /* height of current box */
+ register int nlw; /* loop version of nlwMiddle */
+ register PixelType *p; /* pointer to bits we're writing */
+ int auxDst;
+ int depthDst;
+ register int d;
+ 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 */
+ PixelType *saveP;
+ int saveH;
+ int saveIY;
+
+ ilbmGetPixelWidthAuxDepthAndPointer(pDraw, nlwidth, auxDst, depthDst,
+ pbits);
+
+ MROP_INITIALIZE(alu,~0)
+
+ tileHeight = ptile->drawable.height;
+ psrc = (PixelType *)(ptile->devPrivate.ptr);
+
+ while (nbox--) {
+ w = pbox->x2 - pbox->x1;
+ saveH = pbox->y2 - pbox->y1;
+ saveIY = pbox->y1 % tileHeight;
+ saveP = ilbmScanline(pbits, pbox->x1, pbox->y1, auxDst);
+
+ if ( ((pbox->x1 & PIM) + w) < PPW) {
+ maskpartialbits(pbox->x1, w, startmask);
+ nlwExtra = auxDst;
+ for (d = 0; d < depthDst; d++, saveP += nlwidth) { /* @@@ NEXT PLANE @@@ */
+ if (!(planemask & (1 << d)))
+ continue;
+
+ p = saveP;
+ h = saveH;
+ iy = saveIY;
+
+ while (h--) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ srcpix = 0;
+ break;
+ case RROP_WHITE:
+ srcpix = ~0;
+ break;
+ case RROP_COPY:
+ srcpix = psrc[iy];
+ break;
+ case RROP_INVERT:
+ srcpix = ~psrc[iy];
+ break;
+ }
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ *p = MROP_MASK(srcpix,*p,startmask);
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ }
+ } else {
+ maskbits(pbox->x1, w, startmask, endmask, nlwMiddle);
+
+ for (d = 0; d < depthDst; d++, saveP += nlwidth) { /* @@@ NEXT PLANE @@@ */
+ if (!(planemask & (1 << d)))
+ continue;
+
+ p = saveP;
+ h = saveH;
+ iy = saveIY;
+ nlwExtra = auxDst - nlwMiddle;
+
+ if (startmask && endmask) {
+ nlwExtra -= 1;
+ while (h--) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ srcpix = 0;
+ break;
+ case RROP_WHITE:
+ srcpix = ~0;
+ break;
+ case RROP_COPY:
+ srcpix = psrc[iy];
+ break;
+ case RROP_INVERT:
+ srcpix = ~psrc[iy];
+ break;
+ }
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ *p = MROP_MASK (srcpix,*p,startmask);
+ p++;
+ while (nlw--) {
+ *p = MROP_SOLID(srcpix,*p);
+ p++;
+ }
+
+ *p = MROP_MASK(srcpix,*p,endmask);
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ } else if (startmask && !endmask) {
+ nlwExtra -= 1;
+ while (h--) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ srcpix = 0;
+ break;
+ case RROP_WHITE:
+ srcpix = ~0;
+ break;
+ case RROP_COPY:
+ srcpix = psrc[iy];
+ break;
+ case RROP_INVERT:
+ srcpix = ~psrc[iy];
+ break;
+ }
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ *p = MROP_MASK(srcpix,*p,startmask);
+ p++;
+ while (nlw--) {
+ *p = MROP_SOLID(srcpix,*p);
+ p++;
+ }
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ } else if (!startmask && endmask) {
+ while (h--) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ srcpix = 0;
+ break;
+ case RROP_WHITE:
+ srcpix = ~0;
+ break;
+ case RROP_COPY:
+ srcpix = psrc[iy];
+ break;
+ case RROP_INVERT:
+ srcpix = ~psrc[iy];
+ break;
+ }
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ while (nlw--) {
+ *p = MROP_SOLID(srcpix,*p);
+ p++;
+ }
+
+ *p = MROP_MASK(srcpix,*p,endmask);
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ } else { /* no ragged bits at either end */
+ while (h--) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ srcpix = 0;
+ break;
+ case RROP_WHITE:
+ srcpix = ~0;
+ break;
+ case RROP_COPY:
+ srcpix = psrc[iy];
+ break;
+ case RROP_INVERT:
+ srcpix = ~psrc[iy];
+ break;
+ }
+ iy++;
+ if (iy == tileHeight)
+ iy = 0;
+ nlw = nlwMiddle;
+ while (nlw--) {
+ *p = MROP_SOLID (srcpix,*p);
+ p++;
+ }
+ ilbmScanlineInc(p, nlwExtra);
+ }
+ }
+ } /* for (d = ...) */
+ }
+ pbox++;
+ }
+}
+
+void
+MROP_NAME(ilbmOpaqueStippleArea)(pDraw, nbox, pbox, alu, pTile, xOff, yOff,
+ rropsOS, planemask)
+ DrawablePtr pDraw;
+ int nbox;
+ BoxPtr pbox;
+ int alu;
+ PixmapPtr pTile;
+ int xOff;
+ int yOff;
+ register unsigned char *rropsOS;
+ unsigned long planemask;
+{
+ register PixelType *psrc;
+ /* pointer to bits in tile, if needed */
+ int nlwidth; /* width in longwords of the drawable */
+ MROP_DECLARE_REG ()
+ register int h; /* height of current box */
+ register PixelType *pdst; /* pointer to bits we're writing */
+ register PixelType tmpsrc, tmpdst;
+ int auxDst;
+ int depthDst;
+ int tileLine;
+ int iline;
+ int w, width, x, xSrc, ySrc, srcStartOver, nend;
+ int tlwidth, rem, tileWidth, tileHeight, endinc;
+ int saveW;
+ PixelType *psrcT;
+ int d;
+ int nstart;
+ PixelType startmask;
+ PixelType endmask; /* masks for reggedy bits at either end of line */
+ int nlMiddle; /* number of longwords between sides of boxes */
+ int iy;
+ PixelType *pBase; /* pointer to start of drawable */
+ PixelType *saveP;
+ PixelType *pStartDst;
+ PixelType *pStartTile;
+ int saveH;
+
+ ilbmGetPixelWidthAuxDepthAndPointer(pDraw, nlwidth, auxDst, depthDst,
+ pBase);
+
+ MROP_INITIALIZE(alu,~0)
+
+ tileHeight = pTile->drawable.height;
+ tileWidth = pTile->drawable.width;
+ tlwidth = pTile->devKind/sizeof(PixelType);
+
+ xSrc = pDraw->x + ((xOff % tileWidth) - tileWidth);
+ ySrc = pDraw->y + ((yOff % tileHeight) - tileHeight);
+
+ while (nbox--) {
+ saveW = pbox->x2 - pbox->x1;
+ iline = (pbox->y1 - ySrc) % tileHeight;
+ psrcT = (PixelType *) pTile->devPrivate.ptr;
+ tileLine = iline * tlwidth;
+ saveH = pbox->y2 - pbox->y1;
+ saveP = ilbmScanline(pBase, pbox->x1, pbox->y1, auxDst);
+
+ for (d = 0; d < depthDst; d++, saveP += nlwidth) { /* @@@ NEXT PLANE @@@ */
+ if (!(planemask & (1 << d)))
+ continue;
+
+ h = saveH;
+ pStartDst = saveP;
+ pStartTile = psrcT + tileLine;
+ iy = iline;
+
+ while (h--) {
+ x = pbox->x1;
+ width = saveW;
+ pdst = pStartDst;
+ while (width > 0) {
+ psrc = pStartTile;
+ 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;
+
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ tmpsrc = 0;
+ break;
+ case RROP_WHITE:
+ tmpsrc = ~0;
+ break;
+
+ case RROP_COPY:
+ getbits ((psrc+endinc), (rem&PIM), w, tmpsrc);
+ break;
+
+ case RROP_INVERT:
+ getbits ((psrc+endinc), (rem&PIM), w, tmpsrc);
+ tmpsrc = ~tmpsrc;
+ break;
+ }
+#if (MROP) != Mcopy
+ getbits (pdst, (x & PIM), w, tmpdst);
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, (x & PIM), w, pdst);
+
+ if ((x & PIM) + w >= PPW)
+ pdst++;
+ } else if (((x & PIM) + w) < PPW) {
+ /* doing < PPW bits is easy, and worth special-casing */
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ tmpsrc = 0;
+ break;
+ case RROP_WHITE:
+ tmpsrc = ~0;
+ break;
+ case RROP_COPY:
+ tmpsrc = *psrc;
+ break;
+ case RROP_INVERT:
+ tmpsrc = ~*psrc;
+ break;
+ }
+#if (MROP) != Mcopy
+ getbits (pdst, (x & PIM), w, tmpdst);
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, (x & PIM), w, pdst);
+ } 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) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ tmpsrc = 0;
+ break;
+ case RROP_WHITE:
+ tmpsrc = ~0;
+ break;
+ case RROP_COPY:
+ tmpsrc = *psrc;
+ break;
+ case RROP_INVERT:
+ tmpsrc = ~*psrc;
+ break;
+ }
+#if (MROP) != Mcopy
+ getbits (pdst, (x & PIM), nstart, tmpdst);
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, (x & PIM), nstart, pdst);
+ pdst++;
+ if (srcStartOver)
+ psrc++;
+ }
+
+ while (nlMiddle--) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ tmpsrc = 0;
+ break;
+ case RROP_WHITE:
+ tmpsrc = ~0;
+ break;
+ case RROP_COPY:
+ getbits (psrc, nstart, PPW, tmpsrc);
+ break;
+ case RROP_INVERT:
+ getbits (psrc, nstart, PPW, tmpsrc);
+ tmpsrc = ~tmpsrc;
+ break;
+ }
+#if (MROP) != Mcopy
+ tmpdst = *pdst;
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ *pdst++ = tmpsrc;
+ /*putbits (tmpsrc, 0, PPW, pdst);
+ pdst++; */
+ psrc++;
+ }
+
+ if (endmask) {
+ switch (rropsOS[d]) {
+ case RROP_BLACK:
+ tmpsrc = 0;
+ break;
+ case RROP_WHITE:
+ tmpsrc = ~0;
+ break;
+
+ case RROP_COPY:
+ getbits (psrc, nstart, nend, tmpsrc);
+ break;
+
+ case RROP_INVERT:
+ getbits (psrc, nstart, nend, tmpsrc);
+ tmpsrc = ~tmpsrc;
+ break;
+ }
+#if (MROP) != Mcopy
+ tmpdst = *pdst;
+ tmpsrc = DoMergeRop (tmpsrc, tmpdst);
+#endif
+ putbits (tmpsrc, 0, nend, pdst);
+ }
+ }
+ x += w;
+ width -= w;
+ } /* while (width > 0) */
+
+ pStartDst += auxDst;
+ if (++iy >= tileHeight) {
+ iy = 0;
+ pStartTile = psrcT;
+ } else
+ pStartTile += tlwidth;
+
+ } /* while (h) */
+ } /* for (d = ... ) */
+ pbox++;
+ } /* for each box */
+}