diff options
Diffstat (limited to 'fb/fbpoint.c')
| -rw-r--r-- | fb/fbpoint.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/fb/fbpoint.c b/fb/fbpoint.c new file mode 100644 index 000000000..20426a9f1 --- /dev/null +++ b/fb/fbpoint.c @@ -0,0 +1,156 @@ +/* + * 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 1.8 2001/05/29 04:54:09 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); +} |