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-rw-r--r--iplan2p4/iplblt.c427
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diff --git a/iplan2p4/iplblt.c b/iplan2p4/iplblt.c
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+++ b/iplan2p4/iplblt.c
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+/* $XFree86: xc/programs/Xserver/iplan2p4/iplblt.c,v 3.0 1996/08/18 01:54:35 dawes Exp $ */
+/*
+ * ipl copy area
+ */
+
+/*
+
+Copyright (c) 1989 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.
+
+Author: Keith Packard
+
+*/
+/* $XConsortium: iplblt.c,v 1.13 94/04/17 20:28:44 dpw Exp $ */
+
+/* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with
+interleaved planes */
+
+#include "X.h"
+#include "Xmd.h"
+#include "Xproto.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "pixmapstr.h"
+#include "regionstr.h"
+#include "ipl.h"
+#include "fastblt.h"
+#include "iplmergerop.h"
+#include "iplmskbits.h"
+
+void
+INTER_MROP_NAME(iplDoBitblt)(pSrc, pDst, alu, prgnDst, pptSrc, planemask)
+ DrawablePtr pSrc, pDst;
+ int alu;
+ RegionPtr prgnDst;
+ DDXPointPtr pptSrc;
+ unsigned long planemask;
+{
+ INTER_DECLAREG(*psrcBase);
+ INTER_DECLAREG(*pdstBase); /* start of src and dst bitmaps */
+ int widthSrc, widthDst; /* add to get to same position in next line */
+
+ BoxPtr pbox;
+ int nbox;
+
+ BoxPtr pboxTmp, pboxNext, pboxBase, pboxNew1, pboxNew2;
+ /* temporaries for shuffling rectangles */
+ DDXPointPtr pptTmp, pptNew1, pptNew2;
+ /* shuffling boxes entails shuffling the
+ source points too */
+ int w, h;
+ int xdir; /* 1 = left right, -1 = right left/ */
+ int ydir; /* 1 = top down, -1 = bottom up */
+
+ INTER_DECLAREG(*psrcLine);
+ INTER_DECLAREG(*pdstLine); /* pointers to line with current src and dst */
+ INTER_DECLAREG(*psrc); /* pointer to current src group */
+ INTER_DECLAREG(*pdst); /* pointer to current dst group */
+
+ INTER_MROP_DECLARE_REG()
+
+ /* following used for looping through a line */
+ INTER_DECLAREG(startmask);
+ INTER_DECLAREG(endmask); /* masks for writing ends of dst */
+ int ngMiddle; /* whole groups in dst */
+ int xoffSrc, xoffDst;
+ register int leftShift, rightShift;
+ INTER_DECLAREGP(bits);
+ INTER_DECLAREGP(bits1);
+ INTER_DECLAREGP(bits2);
+ register int ng; /* temp copy of ngMiddle */
+
+ /* place to store full source word */
+ int nstart; /* number of ragged bits at start of dst */
+ int nend; /* number of ragged bits at end of dst */
+ int srcStartOver; /* pulling nstart bits from src
+ overflows into the next word? */
+ int careful;
+ int tmpSrc;
+
+ INTER_MROP_INITIALIZE(alu,planemask);
+
+ iplGetGroupWidthAndPointer (pSrc, widthSrc, psrcBase)
+
+ iplGetGroupWidthAndPointer (pDst, widthDst, pdstBase)
+
+ /* XXX we have to err on the side of safety when both are windows,
+ * because we don't know if IncludeInferiors is being used.
+ */
+ careful = ((pSrc == pDst) ||
+ ((pSrc->type == DRAWABLE_WINDOW) &&
+ (pDst->type == DRAWABLE_WINDOW)));
+
+ pbox = REGION_RECTS(prgnDst);
+ nbox = REGION_NUM_RECTS(prgnDst);
+
+ pboxNew1 = NULL;
+ pptNew1 = NULL;
+ pboxNew2 = NULL;
+ pptNew2 = NULL;
+ if (careful && (pptSrc->y < pbox->y1))
+ {
+ /* walk source botttom to top */
+ ydir = -1;
+ widthSrc = -widthSrc;
+ widthDst = -widthDst;
+
+ if (nbox > 1)
+ {
+ /* keep ordering in each band, reverse order of bands */
+ pboxNew1 = (BoxPtr)ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
+ if(!pboxNew1)
+ return;
+ pptNew1 = (DDXPointPtr)ALLOCATE_LOCAL(sizeof(DDXPointRec) * nbox);
+ if(!pptNew1)
+ {
+ DEALLOCATE_LOCAL(pboxNew1);
+ return;
+ }
+ pboxBase = pboxNext = pbox+nbox-1;
+ while (pboxBase >= pbox)
+ {
+ while ((pboxNext >= pbox) &&
+ (pboxBase->y1 == pboxNext->y1))
+ pboxNext--;
+ pboxTmp = pboxNext+1;
+ pptTmp = pptSrc + (pboxTmp - pbox);
+ while (pboxTmp <= pboxBase)
+ {
+ *pboxNew1++ = *pboxTmp++;
+ *pptNew1++ = *pptTmp++;
+ }
+ pboxBase = pboxNext;
+ }
+ pboxNew1 -= nbox;
+ pbox = pboxNew1;
+ pptNew1 -= nbox;
+ pptSrc = pptNew1;
+ }
+ }
+ else
+ {
+ /* walk source top to bottom */
+ ydir = 1;
+ }
+
+ if (careful && (pptSrc->x < pbox->x1))
+ {
+ /* walk source right to left */
+ xdir = -1;
+
+ if (nbox > 1)
+ {
+ /* reverse order of rects in each band */
+ pboxNew2 = (BoxPtr)ALLOCATE_LOCAL(sizeof(BoxRec) * nbox);
+ pptNew2 = (DDXPointPtr)ALLOCATE_LOCAL(sizeof(DDXPointRec) * nbox);
+ if(!pboxNew2 || !pptNew2)
+ {
+ if (pptNew2) DEALLOCATE_LOCAL(pptNew2);
+ if (pboxNew2) DEALLOCATE_LOCAL(pboxNew2);
+ if (pboxNew1)
+ {
+ DEALLOCATE_LOCAL(pptNew1);
+ DEALLOCATE_LOCAL(pboxNew1);
+ }
+ return;
+ }
+ pboxBase = pboxNext = pbox;
+ while (pboxBase < pbox+nbox)
+ {
+ while ((pboxNext < pbox+nbox) &&
+ (pboxNext->y1 == pboxBase->y1))
+ pboxNext++;
+ pboxTmp = pboxNext;
+ pptTmp = pptSrc + (pboxTmp - pbox);
+ while (pboxTmp != pboxBase)
+ {
+ *pboxNew2++ = *--pboxTmp;
+ *pptNew2++ = *--pptTmp;
+ }
+ pboxBase = pboxNext;
+ }
+ pboxNew2 -= nbox;
+ pbox = pboxNew2;
+ pptNew2 -= nbox;
+ pptSrc = pptNew2;
+ }
+ }
+ else
+ {
+ /* walk source left to right */
+ xdir = 1;
+ }
+
+ while(nbox--)
+ {
+ w = pbox->x2 - pbox->x1;
+ h = pbox->y2 - pbox->y1;
+
+ if (ydir == -1) /* start at last scanline of rectangle */
+ {
+ psrcLine = psrcBase + ((pptSrc->y+h-1) * -widthSrc);
+ pdstLine = pdstBase + ((pbox->y2-1) * -widthDst);
+ }
+ else /* start at first scanline */
+ {
+ psrcLine = psrcBase + (pptSrc->y * widthSrc);
+ pdstLine = pdstBase + (pbox->y1 * widthDst);
+ }
+ if ((pbox->x1 & INTER_PIM) + w <= INTER_PPG)
+ {
+ INTER_maskpartialbits (pbox->x1, w, endmask);
+ startmask = 0;
+ ngMiddle = 0;
+ }
+ else
+ {
+ INTER_maskbits(pbox->x1, w, startmask, endmask, ngMiddle);
+ }
+
+ if (xdir == 1)
+ {
+ xoffSrc = pptSrc->x & INTER_PIM;
+ xoffDst = pbox->x1 & INTER_PIM;
+ pdstLine += (pbox->x1 >> INTER_PGSH) * INTER_PLANES;
+ psrcLine += (pptSrc->x >> INTER_PGSH) * INTER_PLANES;
+ ng = xoffSrc - xoffDst;
+ if (xoffSrc == xoffDst)
+ {
+ while (h--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ pdstLine += widthDst;
+ psrcLine += widthSrc;
+ if (startmask)
+ {
+ INTER_MROP_MASK(psrc, pdst, startmask, pdst);
+ INTER_NEXT_GROUP(psrc);
+ INTER_NEXT_GROUP(pdst);
+ }
+ ng = ngMiddle;
+
+ DuffL(ng, label1,
+ INTER_MROP_SOLID(psrc, pdst, pdst);
+ INTER_NEXT_GROUP(psrc);
+ INTER_NEXT_GROUP(pdst);
+ )
+ if (endmask)
+ INTER_MROP_MASK(psrc, pdst, endmask, pdst);
+ }
+ }
+ else
+ {
+ if (xoffSrc > xoffDst)
+ {
+ leftShift = xoffSrc - xoffDst;
+ rightShift = (INTER_PIM+1) - leftShift;
+ }
+ else
+ {
+ rightShift = xoffDst - xoffSrc;
+ leftShift = (INTER_PIM+1) - rightShift;
+ }
+ while (h--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ pdstLine += widthDst;
+ psrcLine += widthSrc;
+ INTER_CLR(bits);
+ if (xoffSrc > xoffDst) {
+ INTER_COPY(psrc, bits);
+ INTER_NEXT_GROUP(psrc);
+ }
+ if (startmask)
+ {
+ INTER_GETLRC(leftShift, rightShift, psrc, bits, bits1);
+ INTER_MROP_MASK(bits1, pdst, startmask, pdst);
+ INTER_NEXT_GROUP(psrc);
+ INTER_NEXT_GROUP(pdst);
+ }
+ ng = ngMiddle;
+ DuffL (ng,label2,
+ INTER_GETLRC(leftShift, rightShift, psrc, bits, bits1);
+ INTER_MROP_SOLID(bits1, pdst, pdst);
+ INTER_NEXT_GROUP(psrc);
+ INTER_NEXT_GROUP(pdst);
+ )
+ if (endmask)
+ {
+ if ((endmask << rightShift) & 0xffff) {
+ INTER_GETLRC(leftShift, rightShift, psrc, bits,
+ bits1);
+ }
+ else {
+ INTER_SCRLEFT(leftShift, bits, bits1);
+ }
+ INTER_MROP_MASK(bits1, pdst, endmask, pdst);
+ }
+ }
+ }
+ }
+ else /* xdir == -1 */
+ {
+ xoffSrc = (pptSrc->x + w - 1) & INTER_PIM;
+ xoffDst = (pbox->x2 - 1) & INTER_PIM;
+ pdstLine += (((pbox->x2-1) >> INTER_PGSH) + 1) * INTER_PLANES;
+ psrcLine += (((pptSrc->x+w - 1) >> INTER_PGSH) + 1) * INTER_PLANES;
+ if (xoffSrc == xoffDst)
+ {
+ while (h--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ pdstLine += widthDst;
+ psrcLine += widthSrc;
+ if (endmask)
+ {
+ INTER_PREV_GROUP(psrc);
+ INTER_PREV_GROUP(pdst);
+ INTER_MROP_MASK(psrc, pdst, endmask, pdst);
+ }
+ ng = ngMiddle;
+
+ DuffL(ng,label3,
+ INTER_PREV_GROUP(psrc);
+ INTER_PREV_GROUP(pdst);
+ INTER_MROP_SOLID(psrc, pdst, pdst);
+ )
+
+ if (startmask)
+ {
+ INTER_PREV_GROUP(psrc);
+ INTER_PREV_GROUP(pdst);
+ INTER_MROP_MASK(psrc, pdst, startmask, pdst);
+ }
+ }
+ }
+ else
+ {
+ if (xoffDst > xoffSrc)
+ {
+ rightShift = xoffDst - xoffSrc;
+ leftShift = (INTER_PIM + 1) - rightShift;
+ }
+ else
+ {
+ leftShift = xoffSrc - xoffDst;
+ rightShift = (INTER_PIM + 1) - leftShift;
+ }
+ while (h--)
+ {
+ psrc = psrcLine;
+ pdst = pdstLine;
+ pdstLine += widthDst;
+ psrcLine += widthSrc;
+ INTER_CLR(bits);
+ if (xoffDst > xoffSrc) {
+ INTER_PREV_GROUP(psrc);
+ INTER_COPY(psrc, bits);
+ }
+ if (endmask)
+ {
+ INTER_PREV_GROUP(psrc);
+ INTER_PREV_GROUP(pdst);
+ INTER_GETRLC(rightShift, leftShift, psrc, bits, bits1);
+ INTER_MROP_MASK(bits1, pdst, endmask, pdst);
+ }
+ ng = ngMiddle;
+ DuffL (ng, label4,
+ INTER_PREV_GROUP(psrc);
+ INTER_PREV_GROUP(pdst);
+ INTER_GETRLC(rightShift, leftShift, psrc, bits, bits1);
+ INTER_MROP_SOLID(bits1, pdst, pdst);
+ )
+ if (startmask)
+ {
+ INTER_PREV_GROUP(psrc);
+ INTER_PREV_GROUP(pdst);
+ if ((startmask >> leftShift) & 0xffff) {
+ INTER_GETRLC(rightShift, leftShift, psrc, bits,
+ bits1);
+ }
+ else {
+ INTER_SCRRIGHT(rightShift, bits, bits1);
+ }
+ INTER_MROP_MASK(bits1, pdst, startmask, pdst);
+ }
+ }
+ }
+ }
+ pbox++;
+ pptSrc++;
+ }
+ if (pboxNew2)
+ {
+ DEALLOCATE_LOCAL(pptNew2);
+ DEALLOCATE_LOCAL(pboxNew2);
+ }
+ if (pboxNew1)
+ {
+ DEALLOCATE_LOCAL(pptNew1);
+ DEALLOCATE_LOCAL(pboxNew1);
+ }
+}
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