xorg-server-1.4/hw/dmx/dmxshadow.c

   1 /*
   2  * Copyright 2001 Red Hat Inc., Durham, North Carolina.
   3  *
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation on the rights to use, copy, modify, merge,
  10  * publish, distribute, sublicense, and/or sell copies of the Software,
  11  * and to permit persons to whom the Software is furnished to do so,
  12  * subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial
  16  * portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21  * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
  22  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  23  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25  * SOFTWARE.
  26  */
  27
  28 /*
  29  * Authors:
  30  *   Kevin E. Martin <kem@redhat.com>
  31  *   David H. Dawes <dawes@xfree86.org>
  32  *
  33  */
  34
  35 #ifdef HAVE_DMX_CONFIG_H
  36 #include <dmx-config.h>
  37 #endif
  38
  39 #include "dmx.h"
  40 #include "dmxsync.h"
  41 #include "dmxshadow.h"
  42
  43 /** \file
  44  * This file provides support for the shadow frame buffer. */
  45
  46 /** Update the screen from the shadow frame buffer. */
  47 void dmxShadowUpdateProc(ScreenPtr pScreen, shadowBufPtr pBuf)
  48 {
  49     RegionPtr      damage = &pBuf->damage;
  50     int            nbox = REGION_NUM_RECTS(damage);
  51     BoxPtr         pbox = REGION_RECTS(damage);
  52     DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum];
  53
  54     if (!dmxScreen->beDisplay)
  55         return;
  56
  57     while (nbox--) {
  58         XPutImage(dmxScreen->beDisplay,
  59                   dmxScreen->scrnWin,
  60                   dmxScreen->shadowGC,
  61                   dmxScreen->shadowFBImage,
  62                   pbox->x1, pbox->y1,
  63                   pbox->x1, pbox->y1,
  64                   pbox->x2 - pbox->x1,
  65                   pbox->y2 - pbox->y1);
  66
  67         pbox++;
  68     }
  69
  70     dmxSync(dmxScreen, FALSE);
  71 }