components/x11/libdga/src/mbufsetstr.h

   1 /* Copyright (c) 1993, 1994, Oracle and/or its affiliates. All rights reserved.
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a
   4  * copy of this software and associated documentation files (the "Software"),
   5  * to deal in the Software without restriction, including without limitation
   6  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7  * and/or sell copies of the Software, and to permit persons to whom the
   8  * Software is furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice (including the next
  11  * paragraph) shall be included in all copies or substantial portions of the
  12  * Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22
  23
  24 #ifndef _DGA_MBUFSETSTR_H
  25 #define _DGA_MBUFSETSTR_H
  26
  27 /*
  28 ** Client structure for multibuffer set.
  29 */
  30
  31 /*
  32 ** A "multibuffer set" (mbufset) stores client-side info about the multibuffers
  33 ** attached to a multibuffered window.
  34 */
  35
  36 typedef struct dga_mbufset {
  37     unsigned int        refcnt;
  38     short               numBufs;
  39     _Dga_pixmap         pNbPixmaps[DGA_MAX_GRABBABLE_BUFS];
  40
  41     /* shared info for nonviewable mbufs.  Indices that
  42        correspond to viewable mbufs are always NULL */
  43     SHARED_PIXMAP_INFO  *pNbShinfo[DGA_MAX_GRABBABLE_BUFS];
  44
  45     u_int               mbufseq[DGA_MAX_GRABBABLE_BUFS];
  46     u_int               clipseq[DGA_MAX_GRABBABLE_BUFS];
  47     u_int               curseq[DGA_MAX_GRABBABLE_BUFS];
  48
  49     /* last recorded cache count for nonviewable mbufs.  Indices that
  50        correspond to viewable mbufs are always 0 */
  51     u_int               cacheSeqs[DGA_MAX_GRABBABLE_BUFS];
  52
  53     /* last recorded cache count for nonviewable mbufs.  Indices that
  54        correspond to viewable mbufs are always 0 (viewable mbufs
  55        don't have devce info) */
  56     u_int               devInfoSeqs[DGA_MAX_GRABBABLE_BUFS];
  57
  58     /* Has the buffer been locked previously? */
  59     char                prevLocked[DGA_MAX_GRABBABLE_BUFS];
  60
  61 } DgaMbufSet;
  62
  63
  64 #endif /* _DGA_MBUFSETSTR_H */
  65