IABSD.fr/xenocara/xserver/fb/fbsolid.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/fbsolid.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.
   */
  
  #define FbSelectPart(xor,o,t)    xor
  
  #ifdef HAVE_DIX_CONFIG_H
  #include <dix-config.h>
  #endif
  
  #include "fb.h"
  
  void
  fbSolid(FbBits * dst,
          FbStride dstStride,
          int dstX, int bpp, int width, int height, FbBits and, FbBits xor)
  {
      FbBits startmask, endmask;
      int n, nmiddle;
      int startbyte, endbyte;
  
      dst += dstX >> FB_SHIFT;
      dstX &= FB_MASK;
      FbMaskBitsBytes(dstX, width, and == 0, startmask, startbyte,
                      nmiddle, endmask, endbyte);
      if (startmask)
          dstStride--;
      dstStride -= nmiddle;
      while (height--) {
          if (startmask) {
              FbDoLeftMaskByteRRop(dst, startbyte, startmask, and, xor);
              dst++;
          }
          n = nmiddle;
          if (!and)
              while (n--)
                  WRITE(dst++, xor);
          else
              while (n--) {
                  WRITE(dst, FbDoRRop(READ(dst), and, xor));
                  dst++;
              }
          if (endmask)
              FbDoRightMaskByteRRop(dst, endbyte, endmask, and, xor);
          dst += dstStride;
      }
  }