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Diffstat (limited to 'xc/programs/Xserver/fb/fbpoint.c')
| -rw-r--r-- | xc/programs/Xserver/fb/fbpoint.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/xc/programs/Xserver/fb/fbpoint.c b/xc/programs/Xserver/fb/fbpoint.c new file mode 100644 index 000000000..532508f7d --- /dev/null +++ b/xc/programs/Xserver/fb/fbpoint.c @@ -0,0 +1,155 @@ +/* + * $Id: fbpoint.c,v 1.1 2000/01/06 12:56:53 faith 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 1.2 1999/12/30 02:33:59 robin Exp $ */ + +#include "fb.h" + +typedef void (*FbDots) (FbBits *dst, + FbStride dstStride, + int dstBpp, + BoxPtr pBox, + xPoint *pts, + int npt, + FbBits and, + FbBits xor); + +void +fbDots (FbBits *dst, + FbStride dstStride, + int dstBpp, + BoxPtr pBox, + xPoint *pts, + int npt, + FbBits and, + FbBits xor) +{ + int x1, y1, x2, y2; + int x, y; + FbBits *d; + + x1 = pBox->x1; + y1 = pBox->y1; + x2 = pBox->x2; + y2 = pBox->y2; + while (npt--) + { + x = pts->x; + y = pts->y; + pts++; + if (x1 <= x && x < x2 && y1 <= y && y < y2) + { + x *= dstBpp; + d = dst + (y * dstStride) + (x >> FB_SHIFT); + x &= FB_MASK; + if (dstBpp == 24) + { + FbBits leftMask, rightMask; + int n, rot; + FbBits andT, xorT; + + rot = x % 24; + andT = FbRot24(and,rot); + xorT = FbRot24(xor,rot); + FbMaskBits (x, 24, leftMask, n, rightMask); + if (leftMask) + { + *d = FbDoMaskRRop (*d, andT, xorT, leftMask); + andT = FbNext24Pix(andT); + xorT = FbNext24Pix(xorT); + d++; + } + if (rightMask) + *d = FbDoMaskRRop(*d, andT, xorT, rightMask); + } + else + { + FbBits mask; + mask = FbBitsMask(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; + FbDots dots; + FbBits and, xor; + xPoint *ppt; + int npt; + BoxPtr pBox; + int nBox; + + /* make pointlist origin relative */ + ppt = pptInit; + npt = nptInit; + if (mode == CoordModePrevious) + { + ppt->x += pDrawable->x; + ppt->y += pDrawable->y; + npt--; + while(npt--) + { + ppt++; + ppt->x += (ppt-1)->x; + ppt->y += (ppt-1)->y; + } + } + else + { + while (npt--) + { + ppt->x += pDrawable->x; + ppt->y += pDrawable->y; + ppt++; + } + } + fbGetDrawable (pDrawable, dst, dstStride, dstBpp); + and = pPriv->and; + xor = pPriv->xor; + dots = fbDots; +#ifndef FBNOPIXADDR + if (and == 0) + { + switch (dstBpp) { + case 8: dots = fbDots8; break; + case 16: dots = fbDots16; break; + 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, and, xor); +} |