xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
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fbpoint.c (3725B)

      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 static 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             FbStip mask;
     65             x = (x + xoff) * dstBpp;
     66             d = dst + ((y + yoff) * dstStride) + (x >> FB_STIP_SHIFT);
     67             x &= FB_STIP_MASK;
     68 
     69             mask = FbStipMask(x, dstBpp);
     70             WRITE(d, FbDoMaskRRop(READ(d), and, xor, mask));
     71         }
     72     }
     73 }
     74 
     75 void
     76 fbPolyPoint(DrawablePtr pDrawable,
     77             GCPtr pGC, int mode, int nptInit, xPoint * pptInit)
     78 {
     79     FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
     80     RegionPtr pClip = fbGetCompositeClip(pGC);
     81     FbBits *dst;
     82     FbStride dstStride;
     83     int dstBpp;
     84     int dstXoff, dstYoff;
     85     FbDots dots;
     86     FbBits and, xor;
     87     xPoint *ppt;
     88     int npt;
     89     BoxPtr pBox;
     90     int nBox;
     91 
     92     /* make pointlist origin relative */
     93     ppt = pptInit;
     94     npt = nptInit;
     95     if (mode == CoordModePrevious) {
     96         npt--;
     97         while (npt--) {
     98             ppt++;
     99             ppt->x += (ppt - 1)->x;
    100             ppt->y += (ppt - 1)->y;
    101         }
    102     }
    103     fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
    104     and = pPriv->and;
    105     xor = pPriv->xor;
    106     dots = fbDots;
    107     switch (dstBpp) {
    108     case 8:
    109         dots = fbDots8;
    110         break;
    111     case 16:
    112         dots = fbDots16;
    113         break;
    114     case 32:
    115         dots = fbDots32;
    116         break;
    117     }
    118     for (nBox = RegionNumRects(pClip), pBox = RegionRects(pClip);
    119          nBox--; pBox++)
    120         (*dots) (dst, dstStride, dstBpp, pBox, pptInit, nptInit,
    121                  pDrawable->x, pDrawable->y, dstXoff, dstYoff, and, xor);
    122     fbFinishAccess(pDrawable);
    123 }