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If your OpenGL driver supports GLX_INTEL_swap_event that means when glXSwapBuffers is called it returns immediatly and an XEvent is sent when the actual swap has finished. Clutter can use the events that notify swap completion as a means to throttle rendering in the master clock without blocking the CPU and so it should help improve the performance of CPU bound applications.
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/* Clutter.
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* An OpenGL based 'interactive canvas' library.
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* Authored By Matthew Allum <mallum@openedhand.com>
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* Copyright (C) 2006-2007 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __CLUTTER_STAGE_GLX_H__
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#define __CLUTTER_STAGE_GLX_H__
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#include <glib-object.h>
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#include <clutter/clutter-stage.h>
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#include <X11/Xlib.h>
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#include <X11/Xatom.h>
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#include <GL/glx.h>
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#include <GL/gl.h>
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#include "clutter-backend-glx.h"
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#include "../x11/clutter-stage-x11.h"
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_STAGE_GLX (clutter_stage_glx_get_type ())
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#define CLUTTER_STAGE_GLX(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_STAGE_GLX, ClutterStageGLX))
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#define CLUTTER_IS_STAGE_GLX(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_STAGE_GLX))
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#define CLUTTER_STAGE_GLX_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_STAGE_GLX, ClutterStageGLXClass))
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#define CLUTTER_IS_STAGE_GLX_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_STAGE_GLX))
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#define CLUTTER_STAGE_GLX_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_STAGE_GLX, ClutterStageGLXClass))
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typedef struct _ClutterStageGLX ClutterStageGLX;
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typedef struct _ClutterStageGLXClass ClutterStageGLXClass;
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struct _ClutterStageGLX
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{
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ClutterStageX11 parent_instance;
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int pending_swaps;
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GLXPixmap glxpixmap;
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GLXWindow glxwin;
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};
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struct _ClutterStageGLXClass
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{
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ClutterStageX11Class parent_class;
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};
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GType clutter_stage_glx_get_type (void) G_GNUC_CONST;
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G_END_DECLS
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#endif /* __CLUTTER_STAGE_H__ */
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