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/*
* Id: fbpoint.c,v 1.1 1999/11/02 03:54:45 keithp Exp $
*
* Copyright © 1998 Keith Packard
*
* 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, and that the name of Keith Packard not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Keith Packard makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL KEITH PACKARD 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.
*/
/* $XFree86: xc/programs/Xserver/fb/fbpoint.c,v 1.7 2000/09/22 05:58:01 keithp Exp $ */
#include "fb.h"
typedef void (*FbDots) (FbBits *dst,
FbStride dstStride,
int dstBpp,
BoxPtr pBox,
xPoint *pts,
int npt,
int xoff,
int yoff,
FbBits and,
FbBits xor);
void
fbDots (FbBits *dstOrig,
FbStride dstStride,
int dstBpp,
BoxPtr pBox,
xPoint *pts,
int npt,
int xoff,
int yoff,
FbBits andOrig,
FbBits xorOrig)
{
FbStip *dst = (FbStip *) dstOrig;
int x1, y1, x2, y2;
int x, y;
FbStip *d;
FbStip and = andOrig;
FbStip xor = xorOrig;
dstStride = FbBitsStrideToStipStride (dstStride);
x1 = pBox->x1;
y1 = pBox->y1;
x2 = pBox->x2;
y2 = pBox->y2;
while (npt--)
{
x = pts->x + xoff;
y = pts->y + yoff;
pts++;
if (x1 <= x && x < x2 && y1 <= y && y < y2)
{
x *= dstBpp;
d = dst + (y * dstStride) + (x >> FB_STIP_SHIFT);
x &= FB_STIP_MASK;
#ifdef FB_24BIT
if (dstBpp == 24)
{
FbStip leftMask, rightMask;
int n, rot;
FbStip andT, xorT;
rot = FbFirst24Rot (x);
andT = FbRot24Stip(and,rot);
xorT = FbRot24Stip(xor,rot);
FbMaskStip (x, 24, leftMask, n, rightMask);
if (leftMask)
{
*d = FbDoMaskRRop (*d, andT, xorT, leftMask);
andT = FbNext24Stip(andT);
xorT = FbNext24Stip(xorT);
d++;
}
if (rightMask)
*d = FbDoMaskRRop(*d, andT, xorT, rightMask);
}
else
#endif
{
FbStip mask;
mask = FbStipMask(x, dstBpp);
*d = FbDoMaskRRop (*d, and, xor, mask);
}
}
}
}
void
fbPolyPoint (DrawablePtr pDrawable,
GCPtr pGC,
int mode,
int nptInit,
xPoint *pptInit)
{
FbGCPrivPtr pPriv = fbGetGCPrivate (pGC);
RegionPtr pClip = fbGetCompositeClip(pGC);
FbBits *dst;
FbStride dstStride;
int dstBpp;
int dstXoff, dstYoff;
FbDots dots;
FbBits and, xor;
xPoint *ppt;
int npt;
BoxPtr pBox;
int nBox;
/* make pointlist origin relative */
ppt = pptInit;
npt = nptInit;
if (mode == CoordModePrevious)
{
npt--;
while(npt--)
{
ppt++;
ppt->x += (ppt-1)->x;
ppt->y += (ppt-1)->y;
}
}
fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
and = pPriv->and;
xor = pPriv->xor;
dots = fbDots;
#ifndef FBNOPIXADDR
switch (dstBpp) {
case 8: dots = fbDots8; break;
case 16: dots = fbDots16; break;
#ifdef FB_24BIT
case 24: dots = fbDots24; break;
#endif
case 32: dots = fbDots32; break;
}
#endif
for (nBox = REGION_NUM_RECTS (pClip), pBox = REGION_RECTS (pClip);
nBox--; pBox++)
(*dots) (dst, dstStride, dstBpp, pBox, pptInit, nptInit,
pDrawable->x + dstXoff, pDrawable->y + dstYoff, and, xor);
}
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