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

Branch : - branch - master - tag -

• Show log

  Commit

• Author : matthieu
  Date : 2012-06-10 13:21:05
  Hash : e60da745
  Message : Update to xserver 1.12.2. tested by naddy@, krw@, mpi@.

• xserver/fb/fbfillsp.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
  fbFillSpans(DrawablePtr pDrawable,
              GCPtr pGC, int n, DDXPointPtr ppt, int *pwidth, int fSorted)
  {
      RegionPtr pClip = fbGetCompositeClip(pGC);
      BoxPtr pextent, pbox;
      int nbox;
      int extentX1, extentX2, extentY1, extentY2;
      int fullX1, fullX2, fullY1;
      int partX1, partX2;
  
      pextent = RegionExtents(pClip);
      extentX1 = pextent->x1;
      extentY1 = pextent->y1;
      extentX2 = pextent->x2;
      extentY2 = pextent->y2;
      while (n--) {
          fullX1 = ppt->x;
          fullY1 = ppt->y;
          fullX2 = fullX1 + (int) *pwidth;
          ppt++;
          pwidth++;
  
          if (fullY1 < extentY1 || extentY2 <= fullY1)
              continue;
  
          if (fullX1 < extentX1)
              fullX1 = extentX1;
  
          if (fullX2 > extentX2)
              fullX2 = extentX2;
  
          if (fullX1 >= fullX2)
              continue;
  
          nbox = RegionNumRects(pClip);
          if (nbox == 1) {
              fbFill(pDrawable, pGC, fullX1, fullY1, fullX2 - fullX1, 1);
          }
          else {
              pbox = RegionRects(pClip);
              while (nbox--) {
                  if (pbox->y1 <= fullY1 && fullY1 < pbox->y2) {
                      partX1 = pbox->x1;
                      if (partX1 < fullX1)
                          partX1 = fullX1;
                      partX2 = pbox->x2;
                      if (partX2 > fullX2)
                          partX2 = fullX2;
                      if (partX2 > partX1) {
                          fbFill(pDrawable, pGC,
                                 partX1, fullY1, partX2 - partX1, 1);
                      }
                  }
                  pbox++;
              }
          }
      }
  }