xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
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fbfillrect.c (3388B)

      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 void
     30 fbPolyFillRect(DrawablePtr pDrawable, GCPtr pGC, int nrect, xRectangle *prect)
     31 {
     32     RegionPtr pClip = fbGetCompositeClip(pGC);
     33     register BoxPtr pbox;
     34     BoxPtr pextent;
     35     int extentX1, extentX2, extentY1, extentY2;
     36     int fullX1, fullX2, fullY1, fullY2;
     37     int partX1, partX2, partY1, partY2;
     38     int xorg, yorg;
     39     int n;
     40 
     41     xorg = pDrawable->x;
     42     yorg = pDrawable->y;
     43 
     44     pextent = RegionExtents(pClip);
     45     extentX1 = pextent->x1;
     46     extentY1 = pextent->y1;
     47     extentX2 = pextent->x2;
     48     extentY2 = pextent->y2;
     49     while (nrect--) {
     50         fullX1 = prect->x + xorg;
     51         fullY1 = prect->y + yorg;
     52         fullX2 = fullX1 + (int) prect->width;
     53         fullY2 = fullY1 + (int) prect->height;
     54         prect++;
     55 
     56         if (fullX1 < extentX1)
     57             fullX1 = extentX1;
     58 
     59         if (fullY1 < extentY1)
     60             fullY1 = extentY1;
     61 
     62         if (fullX2 > extentX2)
     63             fullX2 = extentX2;
     64 
     65         if (fullY2 > extentY2)
     66             fullY2 = extentY2;
     67 
     68         if ((fullX1 >= fullX2) || (fullY1 >= fullY2))
     69             continue;
     70         n = RegionNumRects(pClip);
     71         if (n == 1) {
     72             fbFill(pDrawable,
     73                    pGC, fullX1, fullY1, fullX2 - fullX1, fullY2 - fullY1);
     74         }
     75         else {
     76             pbox = RegionRects(pClip);
     77             /*
     78              * clip the rectangle to each box in the clip region
     79              * this is logically equivalent to calling Intersect()
     80              */
     81             while (n--) {
     82                 partX1 = pbox->x1;
     83                 if (partX1 < fullX1)
     84                     partX1 = fullX1;
     85                 partY1 = pbox->y1;
     86                 if (partY1 < fullY1)
     87                     partY1 = fullY1;
     88                 partX2 = pbox->x2;
     89                 if (partX2 > fullX2)
     90                     partX2 = fullX2;
     91                 partY2 = pbox->y2;
     92                 if (partY2 > fullY2)
     93                     partY2 = fullY2;
     94 
     95                 pbox++;
     96 
     97                 if (partX1 < partX2 && partY1 < partY2)
     98                     fbFill(pDrawable, pGC,
     99                            partX1, partY1, partX2 - partX1, partY2 - partY1);
    100             }
    101         }
    102     }
    103 }