mutter/clutter/glx/clutter-event-glx.c

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/* Clutter.
* An OpenGL based 'interactive canvas' library.
* Authored By Matthew Allum <mallum@openedhand.com>
* Copyright (C) 2006-2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "clutter-x11.h"
#include "clutter-stage-x11.h"
#include "clutter-backend-x11.h"
#include "clutter-stage-glx.h"
#include "clutter-backend-glx.h"
#include "clutter-private.h"
#include "clutter-stage-private.h"
#include <clutter/clutter-backend.h>
#include <clutter/clutter-stage-manager.h>
#include <X11/Xlib.h>
#include <GL/glxext.h>
#include <glib.h>
gboolean
_clutter_backend_glx_handle_event (ClutterBackendX11 *backend_x11,
XEvent *xevent)
{
#ifdef GLX_INTEL_swap_event
ClutterBackendGLX *backend_glx = CLUTTER_BACKEND_GLX (backend_x11);
ClutterStageManager *stage_manager;
GLXBufferSwapComplete *swap_complete_event;
const GSList *l;
if (xevent->type != (backend_glx->event_base + GLX_BufferSwapComplete))
return FALSE; /* Unhandled */
swap_complete_event = (GLXBufferSwapComplete *)xevent;
#if 0
{
const char *event_name;
if (swap_complete_event->event_type == GLX_EXCHANGE_COMPLETE_INTEL)
event_name = "GLX_EXCHANGE_COMPLETE";
else if (swap_complete_event->event_type == GLX_BLIT_COMPLETE_INTEL)
event_name = "GLX_BLIT_COMPLETE";
else
{
g_assert (swap_complete_event->event_type == GLX_FLIP_COMPLETE_INTEL);
event_name = "GLX_FLIP_COMPLETE";
}
g_print ("XXX: clutter_backend_glx_event_handle event = %s\n",
event_name);
}
#endif
stage_manager = clutter_stage_manager_get_default ();
for (l = clutter_stage_manager_peek_stages (stage_manager); l; l = l->next)
{
ClutterStageWindow *stage_win = _clutter_stage_get_window (l->data);
ClutterStageGLX *stage_glx = CLUTTER_STAGE_GLX (stage_win);
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_win);
if (stage_x11->xwin == swap_complete_event->drawable)
{
/* Early versions of the swap_event implementation in Mesa
* deliver BufferSwapComplete event when not selected for,
* so if we get a swap event we aren't expecting, just ignore it.
*
* https://bugs.freedesktop.org/show_bug.cgi?id=27962
*/
if (stage_glx->pending_swaps > 0)
stage_glx->pending_swaps--;
return TRUE;
}
}
return TRUE;
#else
return FALSE;
#endif
}