| 1 | /* |
| 2 | * Copyright © 1998 Keith Packard |
| 3 | * |
| 4 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 5 | * documentation for any purpose is hereby granted without fee, provided that |
| 6 | * the above copyright notice appear in all copies and that both that |
| 7 | * copyright notice and this permission notice appear in supporting |
| 8 | * documentation, and that the name of Keith Packard not be used in |
| 9 | * advertising or publicity pertaining to distribution of the software without |
| 10 | * specific, written prior permission. Keith Packard makes no |
| 11 | * representations about the suitability of this software for any purpose. It |
| 12 | * is provided "as is" without express or implied warranty. |
| 13 | * |
| 14 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 16 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 20 | * PERFORMANCE OF THIS SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #ifdef HAVE_DIX_CONFIG_H |
| 24 | #include <dix-config.h> |
| 25 | #endif |
| 26 | |
| 27 | #include "fb.h" |
| 28 | |
| 29 | typedef void (*FbDots) (FbBits * dst, |
| 30 | FbStride dstStride, |
| 31 | int dstBpp, |
| 32 | BoxPtr pBox, |
| 33 | xPoint * pts, |
| 34 | int npt, |
| 35 | int xorg, |
| 36 | int yorg, int xoff, int yoff, FbBits and, FbBits xor); |
| 37 | |
| 38 | void |
| 39 | fbDots(FbBits * dstOrig, |
| 40 | FbStride dstStride, |
| 41 | int dstBpp, |
| 42 | BoxPtr pBox, |
| 43 | xPoint * pts, |
| 44 | int npt, |
| 45 | int xorg, int yorg, int xoff, int yoff, FbBits andOrig, FbBits xorOrig) |
| 46 | { |
| 47 | FbStip *dst = (FbStip *) dstOrig; |
| 48 | int x1, y1, x2, y2; |
| 49 | int x, y; |
| 50 | FbStip *d; |
| 51 | FbStip and = andOrig; |
| 52 | FbStip xor = xorOrig; |
| 53 | |
| 54 | dstStride = FbBitsStrideToStipStride(dstStride); |
| 55 | x1 = pBox->x1; |
| 56 | y1 = pBox->y1; |
| 57 | x2 = pBox->x2; |
| 58 | y2 = pBox->y2; |
| 59 | while (npt--) { |
| 60 | x = pts->x + xorg; |
| 61 | y = pts->y + yorg; |
| 62 | pts++; |
| 63 | if (x1 <= x && x < x2 && y1 <= y && y < y2) { |
| 64 | x = (x + xoff) * dstBpp; |
| 65 | d = dst + ((y + yoff) * dstStride) + (x >> FB_STIP_SHIFT); |
| 66 | x &= FB_STIP_MASK; |
| 67 | if (dstBpp == 24) { |
| 68 | FbStip leftMask, rightMask; |
| 69 | int n, rot; |
| 70 | FbStip andT, xorT; |
| 71 | |
| 72 | rot = FbFirst24Rot(x); |
| 73 | andT = FbRot24Stip(and, rot); |
| 74 | xorT = FbRot24Stip(xor, rot); |
| 75 | FbMaskStip(x, 24, leftMask, n, rightMask); |
| 76 | if (leftMask) { |
| 77 | WRITE(d, FbDoMaskRRop(READ(d), andT, xorT, leftMask)); |
| 78 | andT = FbNext24Stip(andT); |
| 79 | xorT = FbNext24Stip(xorT); |
| 80 | d++; |
| 81 | } |
| 82 | if (rightMask) |
| 83 | WRITE(d, FbDoMaskRRop(READ(d), andT, xorT, rightMask)); |
| 84 | } |
| 85 | else { |
| 86 | FbStip mask; |
| 87 | |
| 88 | mask = FbStipMask(x, dstBpp); |
| 89 | WRITE(d, FbDoMaskRRop(READ(d), and, xor, mask)); |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | void |
| 96 | fbPolyPoint(DrawablePtr pDrawable, |
| 97 | GCPtr pGC, int mode, int nptInit, xPoint * pptInit) |
| 98 | { |
| 99 | FbGCPrivPtr pPriv = fbGetGCPrivate(pGC); |
| 100 | RegionPtr pClip = fbGetCompositeClip(pGC); |
| 101 | FbBits *dst; |
| 102 | FbStride dstStride; |
| 103 | int dstBpp; |
| 104 | int dstXoff, dstYoff; |
| 105 | FbDots dots; |
| 106 | FbBits and, xor; |
| 107 | xPoint *ppt; |
| 108 | int npt; |
| 109 | BoxPtr pBox; |
| 110 | int nBox; |
| 111 | |
| 112 | /* make pointlist origin relative */ |
| 113 | ppt = pptInit; |
| 114 | npt = nptInit; |
| 115 | if (mode == CoordModePrevious) { |
| 116 | npt--; |
| 117 | while (npt--) { |
| 118 | ppt++; |
| 119 | ppt->x += (ppt - 1)->x; |
| 120 | ppt->y += (ppt - 1)->y; |
| 121 | } |
| 122 | } |
| 123 | fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff); |
| 124 | and = pPriv->and; |
| 125 | xor = pPriv->xor; |
| 126 | dots = fbDots; |
| 127 | switch (dstBpp) { |
| 128 | case 8: |
| 129 | dots = fbDots8; |
| 130 | break; |
| 131 | case 16: |
| 132 | dots = fbDots16; |
| 133 | break; |
| 134 | case 24: |
| 135 | dots = fbDots24; |
| 136 | break; |
| 137 | case 32: |
| 138 | dots = fbDots32; |
| 139 | break; |
| 140 | } |
| 141 | for (nBox = RegionNumRects(pClip), pBox = RegionRects(pClip); |
| 142 | nBox--; pBox++) |
| 143 | (*dots) (dst, dstStride, dstBpp, pBox, pptInit, nptInit, |
| 144 | pDrawable->x, pDrawable->y, dstXoff, dstYoff, and, xor); |
| 145 | fbFinishAccess(pDrawable); |
| 146 | } |