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/************************************************************
Copyright 1989, 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.
********************************************************/
/* $Xorg: cfbpolypnt.c,v 1.4 2001/02/09 02:04:38 xorgcvs Exp $ */
#include "X.h"
#include "gcstruct.h"
#include "windowstr.h"
#include "pixmapstr.h"
#include "regionstr.h"
#include "scrnintstr.h"
#include "cfb.h"
#include "cfbmskbits.h"
#define isClipped(c,ul,lr) ((((c) - (ul)) | ((lr) - (c))) & ClipMask)
/* WARNING: pbox contains two shorts. This code assumes they are packed
* and can be referenced together as an INT32.
*/
#define PointLoop(fill) { \
for (nbox = REGION_NUM_RECTS(cclip), pbox = REGION_RECTS(cclip); \
--nbox >= 0; \
pbox++) \
{ \
c1 = *((INT32 *) &pbox->x1) - off; \
c2 = *((INT32 *) &pbox->x2) - off - 0x00010001; \
for (ppt = (INT32 *) pptInit, i = npt; --i >= 0;) \
{ \
pt = *ppt++; \
if (!isClipped(pt,c1,c2)) { \
fill \
} \
} \
} \
}
void
cfbPolyPoint(pDrawable, pGC, mode, npt, pptInit)
DrawablePtr pDrawable;
GCPtr pGC;
int mode;
int npt;
xPoint *pptInit;
{
register INT32 pt;
register INT32 c1, c2;
register unsigned long ClipMask = 0x80008000;
register unsigned long xor;
#ifdef PIXEL_ADDR
register PixelType *addrp;
register int npwidth;
PixelType *addrpt;
#else
register unsigned long *addrl;
register int nlwidth;
register int xoffset;
unsigned long *addrlt;
#endif
register INT32 *ppt;
RegionPtr cclip;
int nbox;
register int i;
register BoxPtr pbox;
unsigned long and;
int rop = pGC->alu;
int off;
cfbPrivGCPtr devPriv;
xPoint *pptPrev;
devPriv =cfbGetGCPrivate(pGC);
rop = devPriv->rop;
if (rop == GXnoop)
return;
cclip = devPriv->pCompositeClip;
xor = devPriv->xor;
if ((mode == CoordModePrevious) && (npt > 1))
{
for (pptPrev = pptInit + 1, i = npt - 1; --i >= 0; pptPrev++)
{
pptPrev->x += (pptPrev-1)->x;
pptPrev->y += (pptPrev-1)->y;
}
}
off = *((int *) &pDrawable->x);
off -= (off & 0x8000) << 1;
#ifdef PIXEL_ADDR
cfbGetPixelWidthAndPointer(pDrawable, npwidth, addrp);
addrp = addrp + pDrawable->y * npwidth + pDrawable->x;
if (rop == GXcopy)
{
if (!(npwidth & (npwidth - 1)))
{
npwidth = ffs(npwidth) - 1;
PointLoop(*(addrp + (intToY(pt) << npwidth) + intToX(pt)) = xor;)
}
#ifdef sun
else if (npwidth == 1152)
{
register int y;
PointLoop(y = intToY(pt); *(addrp + (y << 10) + (y << 7) + intToX(pt)) = xor;)
}
#endif
else
{
PointLoop(*(addrp + intToY(pt) * npwidth + intToX(pt)) = xor;)
}
}
else
{
and = devPriv->and;
PointLoop( addrpt = addrp + intToY(pt) * npwidth + intToX(pt);
*addrpt = DoRRop (*addrpt, and, xor);)
}
#else /* !PIXEL_ADDR */
cfbGetLongWidthAndPointer(pDrawable, nlwidth, addrl);
addrl = addrl + pDrawable->y * nlwidth + (pDrawable->x >> PWSH);
xoffset = pDrawable->x & PIM;
and = devPriv->and;
PointLoop( addrlt = addrl + intToY(pt) * nlwidth
+ ((intToX(pt) + xoffset) >> PWSH);
*addrlt = DoRRop (*addrlt,
and | ~cfbmask[(intToX(pt) + xoffset) & PIM],
xor & cfbmask[(intToX(pt) + xoffset) & PIM]);
)
#endif /* PIXEL_ADDR */
}
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