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

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• Author : matthieu
  Date : 2015-09-16 19:10:19
  Hash : 86ea9f12
  Message : Update to xserver 1.17.2. tested by dcoppa@, jsg@, jasper@ & naddy@

• xserver/fb/fbutil.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"
  
  FbBits
  fbReplicatePixel(Pixel p, int bpp)
  {
      FbBits b = p;
  
      b &= FbFullMask(bpp);
      while (bpp < FB_UNIT) {
          b |= b << bpp;
          bpp <<= 1;
      }
      return b;
  }
  
  #define O 0
  #define I FB_ALLONES
  
  const FbMergeRopRec FbMergeRopBits[16] = {
      {O, O, O, O},               /* clear         0x0         0 */
      {I, O, O, O},               /* and           0x1         src AND dst */
      {I, O, I, O},               /* andReverse    0x2         src AND NOT dst */
      {O, O, I, O},               /* copy          0x3         src */
      {I, I, O, O},               /* andInverted   0x4         NOT src AND dst */
      {O, I, O, O},               /* noop          0x5         dst */
      {O, I, I, O},               /* xor           0x6         src XOR dst */
      {I, I, I, O},               /* or            0x7         src OR dst */
      {I, I, I, I},               /* nor           0x8         NOT src AND NOT dst */
      {O, I, I, I},               /* equiv         0x9         NOT src XOR dst */
      {O, I, O, I},               /* invert        0xa         NOT dst */
      {I, I, O, I},               /* orReverse     0xb         src OR NOT dst */
      {O, O, I, I},               /* copyInverted  0xc         NOT src */
      {I, O, I, I},               /* orInverted    0xd         NOT src OR dst */
      {I, O, O, I},               /* nand          0xe         NOT src OR NOT dst */
      {O, O, O, I},               /* set           0xf         1 */
  };