IABSD.fr/xenocara/xserver/fb/fbsetsp.c

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• Author : matthieu
  Date : 2019-07-27 07:57:06
  Hash : a77e9959
  Message : Update to xserver 1.20.5. Tested by jsg@

• xserver/fb/fbsetsp.c

• /*
   * 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.
   */
  
  #ifdef HAVE_DIX_CONFIG_H
  #include <dix-config.h>
  #endif
  
  #include "fb.h"
  
  void
  fbSetSpans(DrawablePtr pDrawable,
             GCPtr pGC,
             char *src, DDXPointPtr ppt, int *pwidth, int nspans, int fSorted)
  {
      FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
      RegionPtr pClip = fbGetCompositeClip(pGC);
      FbBits *dst, *d, *s;
      FbStride dstStride;
      int dstBpp;
      int dstXoff, dstYoff;
      BoxPtr pbox;
      int n;
      int xoff;
      int x1, x2;
  
      fbGetDrawable(pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
      while (nspans--) {
          d = dst + (ppt->y + dstYoff) * dstStride;
          xoff = (int) (((long) src) & (FB_MASK >> 3));
          s = (FbBits *) (src - xoff);
          xoff <<= 3;
          n = RegionNumRects(pClip);
          pbox = RegionRects(pClip);
          while (n--) {
              if (pbox->y1 > ppt->y)
                  break;
              if (pbox->y2 > ppt->y) {
                  x1 = ppt->x;
                  x2 = x1 + *pwidth;
                  if (pbox->x1 > x1)
                      x1 = pbox->x1;
                  if (pbox->x2 < x2)
                      x2 = pbox->x2;
                  if (x1 < x2)
                      fbBlt((FbBits *) s,
                            0,
                            (x1 - ppt->x) * dstBpp + xoff,
                            d,
                            dstStride,
                            (x1 + dstXoff) * dstBpp,
                            (x2 - x1) * dstBpp,
                            1, pGC->alu, pPriv->pm, dstBpp, FALSE, FALSE);
              }
          }
          src += PixmapBytePad(*pwidth, pDrawable->depth);
          ppt++;
          pwidth++;
      }
      fbValidateDrawable(pDrawable);
      fbFinishAccess(pDrawable);
  }