pix_update.c revision 943
/* Copyright (c) 1993, 2002, Oracle and/or its affiliates. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*
** pix_update.c
**
** Routines of the update phase for pixmaps.
*/
#ifdef SERVER_DGA
#include <X11/Xlib.h>
#endif /* SERVER_DGA */
#include "dga_incls.h"
#include "pix_grab.h"
void
dgai_pix_notify(_Dga_pixmap dgapix)
{
if (dgapix->siteNotifyFunc && (dgapix->changeMask & DGA_CHANGE_SITE)) {
(*dgapix->siteNotifyFunc)((Dga_drawable)dgapix, -1,
dgapix->siteNotifyClientData,
dgapix->siteChgReason);
dgapix->changeMask &= ~DGA_CHANGE_SITE;
}
}
int
dgai_pix_update(Dga_drawable dgadraw, short bufIndex)
{
_Dga_pixmap dgapix = (_Dga_pixmap)dgadraw;
SHARED_PIXMAP_INFO *infop;
#ifdef MT
if (dgaMTOn) {
mutex_lock(dgapix->mutexp);
DGA_LOCK(dgadraw);
/* check the real change count that we saved away */
if (dgapix->shadow_chngcnt[0] == *dgapix->s_chngcnt_p) {
mutex_unlock(dgapix->mutexp);
DGA_UNLOCK(dgadraw);
return (0);
}
}
#endif
infop = PIX_INFOP(dgapix);
dgapix->changeMask = 0;
/* first, see if the shared info is still valid */
if (infop->obsolete) {
dgapix->changeMask |= DGA_CHANGE_ZOMBIE;
}
if (dgapix->changeMask & DGA_CHANGE_ZOMBIE) {
dgapix->changeMask |= (DGA_CHANGE_SITE | DGA_CHANGE_CLIP);
dgapix->siteChgReason = DGA_SITECHG_ZOMBIE;
}
/* see if the dev_info has changed */
if (dgapix->c_devinfocnt != *dgapix->s_devinfocnt_p) {
dgapix->changeMask |= DGA_CHANGE_DEVINFO;
dgapix->c_devinfocnt = *dgapix->s_devinfocnt_p;
}
/* Has the cache changed? */
if (dgapix->c_cachecnt != *dgapix->s_cachecnt_p) {
dgapix->changeMask |= (DGA_CHANGE_CACHE | DGA_CHANGE_SITE);
dgapix->siteChgReason = DGA_SITECHG_CACHE;
dgapix->c_cached = *dgapix->s_cached_p;
dgapix->c_cachecnt = *dgapix->s_cachecnt_p;
}
dgai_pix_notify(dgapix);
#ifdef MT
if (dgaMTOn) {
/* save the real change count */
dgapix->shadow_chngcnt[0] = *dgapix->s_chngcnt_p;
/* For the MT case, make sure that this update function gets called
* the next time around, so make the change count different.
*/
dgapix->c_chngcnt[0] = *dgapix->s_chngcnt_p - 1;
mutex_unlock(dgapix->mutexp);
DGA_UNLOCK(dgadraw);
} else {
dgapix->c_chngcnt[0] = *dgapix->s_chngcnt_p;
}
#else
dgapix->c_chngcnt[0] = *dgapix->s_chngcnt_p;
#endif
return(dgapix->changeMask);
}