124 lines
3.6 KiB
C
124 lines
3.6 KiB
C
/*
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* Copyright © 1998 Keith Packard
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*
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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, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include "fb.h"
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typedef void (*FbDots) (FbBits * dst,
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FbStride dstStride,
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int dstBpp,
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BoxPtr pBox,
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xPoint * pts,
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int npt,
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int xorg,
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int yorg, int xoff, int yoff, FbBits and, FbBits xor);
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static void
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fbDots(FbBits * dstOrig,
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FbStride dstStride,
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int dstBpp,
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BoxPtr pBox,
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xPoint * pts,
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int npt,
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int xorg, int yorg, int xoff, int yoff, FbBits andOrig, FbBits xorOrig)
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{
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FbStip *dst = (FbStip *) dstOrig;
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int x1, y1, x2, y2;
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int x, y;
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FbStip *d;
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FbStip and = andOrig;
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FbStip xor = xorOrig;
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dstStride = FbBitsStrideToStipStride(dstStride);
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x1 = pBox->x1;
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y1 = pBox->y1;
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x2 = pBox->x2;
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y2 = pBox->y2;
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while (npt--) {
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x = pts->x + xorg;
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y = pts->y + yorg;
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pts++;
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if (x1 <= x && x < x2 && y1 <= y && y < y2) {
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FbStip mask;
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x = (x + xoff) * dstBpp;
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d = dst + ((y + yoff) * dstStride) + (x >> FB_STIP_SHIFT);
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x &= FB_STIP_MASK;
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mask = FbStipMask(x, dstBpp);
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WRITE(d, FbDoMaskRRop(READ(d), and, xor, mask));
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}
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}
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}
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void
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fbPolyPoint(DrawablePtr pDrawable,
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GCPtr pGC, int mode, int nptInit, xPoint * pptInit)
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{
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FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
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RegionPtr pClip = fbGetCompositeClip(pGC);
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FbBits *dst;
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FbStride dstStride;
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int dstBpp;
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int dstXoff, dstYoff;
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FbDots dots;
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FbBits and, xor;
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xPoint *ppt;
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int npt;
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BoxPtr pBox;
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int nBox;
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/* make pointlist origin relative */
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ppt = pptInit;
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npt = nptInit;
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if (mode == CoordModePrevious) {
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npt--;
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while (npt--) {
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ppt++;
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ppt->x += (ppt - 1)->x;
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ppt->y += (ppt - 1)->y;
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}
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}
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fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
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and = pPriv->and;
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xor = pPriv->xor;
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dots = fbDots;
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switch (dstBpp) {
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case 8:
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dots = fbDots8;
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break;
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case 16:
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dots = fbDots16;
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break;
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case 32:
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dots = fbDots32;
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break;
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}
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for (nBox = RegionNumRects(pClip), pBox = RegionRects(pClip);
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nBox--; pBox++)
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(*dots) (dst, dstStride, dstBpp, pBox, pptInit, nptInit,
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pDrawable->x, pDrawable->y, dstXoff, dstYoff, and, xor);
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fbFinishAccess(pDrawable);
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}
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