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R6.6 is the Xorg base-line
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Kaleb Keithley
150
cfb/cfbpolypnt.c
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150
cfb/cfbpolypnt.c
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/************************************************************
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Copyright 1989, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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********************************************************/
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/* $Xorg: cfbpolypnt.c,v 1.4 2001/02/09 02:04:38 xorgcvs Exp $ */
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#include "X.h"
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#include "gcstruct.h"
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#include "windowstr.h"
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#include "pixmapstr.h"
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#include "regionstr.h"
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#include "scrnintstr.h"
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#include "cfb.h"
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#include "cfbmskbits.h"
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#define isClipped(c,ul,lr) ((((c) - (ul)) | ((lr) - (c))) & ClipMask)
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/* WARNING: pbox contains two shorts. This code assumes they are packed
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* and can be referenced together as an INT32.
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*/
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#define PointLoop(fill) { \
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for (nbox = REGION_NUM_RECTS(cclip), pbox = REGION_RECTS(cclip); \
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--nbox >= 0; \
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pbox++) \
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{ \
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c1 = *((INT32 *) &pbox->x1) - off; \
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c2 = *((INT32 *) &pbox->x2) - off - 0x00010001; \
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for (ppt = (INT32 *) pptInit, i = npt; --i >= 0;) \
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{ \
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pt = *ppt++; \
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if (!isClipped(pt,c1,c2)) { \
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fill \
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} \
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} \
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} \
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}
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void
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cfbPolyPoint(pDrawable, pGC, mode, npt, pptInit)
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DrawablePtr pDrawable;
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GCPtr pGC;
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int mode;
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int npt;
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xPoint *pptInit;
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{
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register INT32 pt;
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register INT32 c1, c2;
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register unsigned long ClipMask = 0x80008000;
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register unsigned long xor;
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#ifdef PIXEL_ADDR
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register PixelType *addrp;
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register int npwidth;
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PixelType *addrpt;
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#else
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register unsigned long *addrl;
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register int nlwidth;
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register int xoffset;
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unsigned long *addrlt;
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#endif
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register INT32 *ppt;
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RegionPtr cclip;
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int nbox;
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register int i;
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register BoxPtr pbox;
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unsigned long and;
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int rop = pGC->alu;
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int off;
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cfbPrivGCPtr devPriv;
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xPoint *pptPrev;
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devPriv =cfbGetGCPrivate(pGC);
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rop = devPriv->rop;
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if (rop == GXnoop)
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return;
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cclip = devPriv->pCompositeClip;
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xor = devPriv->xor;
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if ((mode == CoordModePrevious) && (npt > 1))
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{
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for (pptPrev = pptInit + 1, i = npt - 1; --i >= 0; pptPrev++)
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{
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pptPrev->x += (pptPrev-1)->x;
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pptPrev->y += (pptPrev-1)->y;
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}
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}
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off = *((int *) &pDrawable->x);
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off -= (off & 0x8000) << 1;
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#ifdef PIXEL_ADDR
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cfbGetPixelWidthAndPointer(pDrawable, npwidth, addrp);
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addrp = addrp + pDrawable->y * npwidth + pDrawable->x;
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if (rop == GXcopy)
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{
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if (!(npwidth & (npwidth - 1)))
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{
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npwidth = ffs(npwidth) - 1;
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PointLoop(*(addrp + (intToY(pt) << npwidth) + intToX(pt)) = xor;)
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}
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#ifdef sun
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else if (npwidth == 1152)
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{
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register int y;
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PointLoop(y = intToY(pt); *(addrp + (y << 10) + (y << 7) + intToX(pt)) = xor;)
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}
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#endif
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else
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{
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PointLoop(*(addrp + intToY(pt) * npwidth + intToX(pt)) = xor;)
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}
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}
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else
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{
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and = devPriv->and;
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PointLoop( addrpt = addrp + intToY(pt) * npwidth + intToX(pt);
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*addrpt = DoRRop (*addrpt, and, xor);)
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}
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#else /* !PIXEL_ADDR */
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cfbGetLongWidthAndPointer(pDrawable, nlwidth, addrl);
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addrl = addrl + pDrawable->y * nlwidth + (pDrawable->x >> PWSH);
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xoffset = pDrawable->x & PIM;
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and = devPriv->and;
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PointLoop( addrlt = addrl + intToY(pt) * nlwidth
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+ ((intToX(pt) + xoffset) >> PWSH);
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*addrlt = DoRRop (*addrlt,
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and | ~cfbmask[(intToX(pt) + xoffset) & PIM],
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xor & cfbmask[(intToX(pt) + xoffset) & PIM]);
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)
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#endif /* PIXEL_ADDR */
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}
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