xserver

xserver with xephyr scale patch
git clone https://git.neptards.moe/u3shit/xserver.git
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fbsetsp.c (2843B)

      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 fbSetSpans(DrawablePtr pDrawable,
     31            GCPtr pGC,
     32            char *src, DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
     33 {
     34     FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
     35     RegionPtr pClip = fbGetCompositeClip(pGC);
     36     FbBits *dst, *d, *s;
     37     FbStride dstStride;
     38     int dstBpp;
     39     int dstXoff, dstYoff;
     40     BoxPtr pbox;
     41     int n;
     42     int xoff;
     43     int x1, x2;
     44 
     45     fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
     46     while (nspans--) {
     47         d = dst + (ppt->y + dstYoff) * dstStride;
     48         xoff = (int) (((long) src) & (FB_MASK >> 3));
     49         s = (FbBits *) (src - xoff);
     50         xoff <<= 3;
     51         n = RegionNumRects(pClip);
     52         pbox = RegionRects(pClip);
     53         while (n--) {
     54             if (pbox->y1 > ppt->y)
     55                 break;
     56             if (pbox->y2 > ppt->y) {
     57                 x1 = ppt->x;
     58                 x2 = x1 + *pwidth;
     59                 if (pbox->x1 > x1)
     60                     x1 = pbox->x1;
     61                 if (pbox->x2 < x2)
     62                     x2 = pbox->x2;
     63                 if (x1 < x2)
     64                     fbBlt((FbBits *) s,
     65                           0,
     66                           (x1 - ppt->x) * dstBpp + xoff,
     67                           d,
     68                           dstStride,
     69                           (x1 + dstXoff) * dstBpp,
     70                           (x2 - x1) * dstBpp,
     71                           1, pGC->alu, pPriv->pm, dstBpp, FALSE, FALSE);
     72             }
     73         }
     74         src += PixmapBytePad(*pwidth, pDrawable->depth);
     75         ppt++;
     76         pwidth++;
     77     }
     78     fbValidateDrawable(pDrawable);
     79     fbFinishAccess(pDrawable);
     80 }