266 lines
8.3 KiB
C
266 lines
8.3 KiB
C
/* $XFree86: xc/programs/Xserver/afb/afbsetsp.c,v 3.2 2001/08/01 00:44:47 tsi Exp $ */
|
||
/* 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: afbsetsp.c,v 5.8 94/04/17 20:28:34 dpw Exp $ */
|
||
|
||
#include "X.h"
|
||
#include "Xmd.h"
|
||
|
||
#include "misc.h"
|
||
#include "regionstr.h"
|
||
#include "gcstruct.h"
|
||
#include "windowstr.h"
|
||
#include "pixmapstr.h"
|
||
#include "scrnintstr.h"
|
||
|
||
#include "afb.h"
|
||
#include "maskbits.h"
|
||
|
||
#include "servermd.h"
|
||
|
||
|
||
/* afbSetScanline -- copies the bits from psrc to the drawable starting at
|
||
* (xStart, y) and continuing to (xEnd, y). xOrigin tells us where psrc
|
||
* starts on the scanline. (I.e., if this scanline passes through multiple
|
||
* boxes, we may not want to start grabbing bits at psrc but at some offset
|
||
* further on.)
|
||
*/
|
||
void
|
||
afbSetScanline(y, xOrigin, xStart, xEnd, psrc, alu, pdstBase, widthDst,
|
||
sizeDst, depthDst, sizeSrc)
|
||
int y;
|
||
int xOrigin; /* where this scanline starts */
|
||
int xStart; /* first bit to use from scanline */
|
||
int xEnd; /* last bit to use from scanline + 1 */
|
||
register PixelType *psrc;
|
||
register int alu; /* raster op */
|
||
PixelType *pdstBase; /* start of the drawable */
|
||
int widthDst; /* width of drawable in words */
|
||
int sizeDst;
|
||
int depthDst;
|
||
int sizeSrc;
|
||
{
|
||
int w; /* width of scanline in bits */
|
||
register PixelType *pdst; /* where to put the bits */
|
||
register PixelType tmpSrc; /* scratch buffer to collect bits in */
|
||
int dstBit; /* offset in bits from beginning of
|
||
* word */
|
||
register int nstart; /* number of bits from first partial */
|
||
register int nend; /* " " last partial word */
|
||
int offSrc;
|
||
PixelType startmask, endmask;
|
||
PixelType *savePsrc = psrc + ((xStart - xOrigin) >> PWSH);
|
||
int nlMiddle, nl;
|
||
int d;
|
||
|
||
for (d = 0; d < depthDst; d++) {
|
||
pdst = afbScanline(pdstBase, xStart, y, widthDst) + sizeDst * d; /* @@@ NEXT PLANE @@@ */
|
||
psrc = savePsrc + sizeSrc * d; /* @@@ NEXT PLANE @@@ */
|
||
offSrc = (xStart - xOrigin) & PIM;
|
||
w = xEnd - xStart;
|
||
dstBit = xStart & PIM;
|
||
|
||
if (dstBit + w <= PPW) {
|
||
getandputrop(psrc, offSrc, dstBit, w, pdst, alu)
|
||
} else {
|
||
maskbits(xStart, w, startmask, endmask, nlMiddle);
|
||
if (startmask)
|
||
nstart = PPW - dstBit;
|
||
else
|
||
nstart = 0;
|
||
if (endmask)
|
||
nend = xEnd & PIM;
|
||
else
|
||
nend = 0;
|
||
if (startmask) {
|
||
getandputrop(psrc, offSrc, dstBit, nstart, pdst, alu)
|
||
pdst++;
|
||
offSrc += nstart;
|
||
if (offSrc > PLST) {
|
||
psrc++;
|
||
offSrc -= PPW;
|
||
}
|
||
}
|
||
nl = nlMiddle;
|
||
while (nl--) {
|
||
getbits(psrc, offSrc, PPW, tmpSrc);
|
||
DoRop(*pdst, alu, tmpSrc, *pdst);
|
||
pdst++;
|
||
psrc++;
|
||
}
|
||
if (endmask) {
|
||
getandputrop0(psrc, offSrc, nend, pdst, alu);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* SetSpans -- for each span copy pwidth[i] bits from psrc to pDrawable at
|
||
* ppt[i] using the raster op from the GC. If fSorted is TRUE, the scanlines
|
||
* are in increasing Y order.
|
||
* Source bit lines are server scanline padded so that they always begin
|
||
* on a word boundary.
|
||
*/
|
||
void
|
||
afbSetSpans(pDrawable, pGC, pcharsrc, ppt, pwidth, nspans, fSorted)
|
||
DrawablePtr pDrawable;
|
||
GCPtr pGC;
|
||
char *pcharsrc;
|
||
register DDXPointPtr ppt;
|
||
int *pwidth;
|
||
int nspans;
|
||
int fSorted;
|
||
{
|
||
PixelType *psrc = (PixelType *)pcharsrc;
|
||
PixelType *pdstBase; /* start of dst bitmap */
|
||
int widthDst; /* width of bitmap in words */
|
||
int sizeDst;
|
||
int depthDst;
|
||
int sizeSrc = 0;
|
||
register BoxPtr pbox, pboxLast, pboxTest;
|
||
register DDXPointPtr pptLast;
|
||
int alu;
|
||
RegionPtr prgnDst;
|
||
int xStart, xEnd;
|
||
int yMax;
|
||
|
||
alu = pGC->alu;
|
||
prgnDst = pGC->pCompositeClip;
|
||
|
||
pptLast = ppt + nspans;
|
||
|
||
yMax = pDrawable->y + (int) pDrawable->height;
|
||
afbGetPixelWidthSizeDepthAndPointer(pDrawable, widthDst, sizeDst, depthDst,
|
||
pdstBase);
|
||
|
||
pbox = REGION_RECTS(prgnDst);
|
||
pboxLast = pbox + REGION_NUM_RECTS(prgnDst);
|
||
|
||
if(fSorted) {
|
||
/* scan lines sorted in ascending order. Because they are sorted, we
|
||
* don't have to check each scanline against each clip box. We can be
|
||
* sure that this scanline only has to be clipped to boxes at or after the
|
||
* beginning of this y-band
|
||
*/
|
||
pboxTest = pbox;
|
||
while(ppt < pptLast) {
|
||
pbox = pboxTest;
|
||
if(ppt->y >= yMax)
|
||
break;
|
||
while(pbox < pboxLast) {
|
||
if(pbox->y1 > ppt->y) {
|
||
/* scanline is before clip box */
|
||
break;
|
||
} else if(pbox->y2 <= ppt->y) {
|
||
/* clip box is before scanline */
|
||
pboxTest = ++pbox;
|
||
continue;
|
||
} else if(pbox->x1 > ppt->x + *pwidth) {
|
||
/* clip box is to right of scanline */
|
||
break;
|
||
} else if(pbox->x2 <= ppt->x) {
|
||
/* scanline is to right of clip box */
|
||
pbox++;
|
||
continue;
|
||
}
|
||
|
||
/* at least some of the scanline is in the current clip box */
|
||
xStart = max(pbox->x1, ppt->x);
|
||
xEnd = min(ppt->x + *pwidth, pbox->x2);
|
||
sizeSrc = PixmapWidthInPadUnits(*pwidth, 1);
|
||
afbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu, pdstBase,
|
||
widthDst, sizeDst, depthDst, sizeSrc);
|
||
if(ppt->x + *pwidth <= pbox->x2) {
|
||
/* End of the line, as it were */
|
||
break;
|
||
} else
|
||
pbox++;
|
||
}
|
||
/* We've tried this line against every box; it must be outside them
|
||
* all. move on to the next point */
|
||
ppt++;
|
||
psrc += sizeSrc * depthDst;
|
||
pwidth++;
|
||
}
|
||
} else {
|
||
/* scan lines not sorted. We must clip each line against all the boxes */
|
||
while(ppt < pptLast) {
|
||
if(ppt->y >= 0 && ppt->y < yMax) {
|
||
for(pbox = REGION_RECTS(prgnDst); pbox< pboxLast; pbox++) {
|
||
if(pbox->y1 > ppt->y) {
|
||
/* rest of clip region is above this scanline,
|
||
* skip it */
|
||
break;
|
||
}
|
||
if(pbox->y2 <= ppt->y) {
|
||
/* clip box is below scanline */
|
||
pbox++;
|
||
break;
|
||
}
|
||
if(pbox->x1 <= ppt->x + *pwidth &&
|
||
pbox->x2 > ppt->x) {
|
||
xStart = max(pbox->x1, ppt->x);
|
||
xEnd = min(pbox->x2, ppt->x + *pwidth);
|
||
sizeSrc = PixmapWidthInPadUnits(*pwidth, 1);
|
||
afbSetScanline(ppt->y, ppt->x, xStart, xEnd, psrc, alu,
|
||
pdstBase, widthDst, sizeDst, depthDst,
|
||
sizeSrc);
|
||
}
|
||
|
||
}
|
||
}
|
||
psrc += sizeSrc * depthDst;
|
||
ppt++;
|
||
pwidth++;
|
||
}
|
||
}
|
||
}
|