5d702853b8
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.
73 lines
2.7 KiB
C
73 lines
2.7 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Authored By Matthew Allum <mallum@openedhand.com>
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*
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* Copyright (C) 2006 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, see <http://www.gnu.org/licenses/>.
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*/
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#ifndef __CLUTTER_FEATURE_H__
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#define __CLUTTER_FEATURE_H__
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#include <glib.h>
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G_BEGIN_DECLS
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/**
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* ClutterFeatureFlags:
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* @CLUTTER_FEATURE_TEXTURE_NPOT: Set if NPOTS textures supported.
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* @CLUTTER_FEATURE_SYNC_TO_VBLANK: Set if vblank syncing supported.
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* @CLUTTER_FEATURE_TEXTURE_YUV: Set if YUV based textures supported.
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* @CLUTTER_FEATURE_TEXTURE_READ_PIXELS: Set if texture pixels can be read.
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* @CLUTTER_FEATURE_STAGE_STATIC: Set if stage size if fixed (i.e framebuffer)
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* @CLUTTER_FEATURE_STAGE_USER_RESIZE: Set if stage is able to be user resized.
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* @CLUTTER_FEATURE_STAGE_CURSOR: Set if stage has a graphical cursor.
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* @CLUTTER_FEATURE_SHADERS_GLSL: Set if the backend supports GLSL shaders.
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* @CLUTTER_FEATURE_OFFSCREEN: Set if the backend supports offscreen rendering.
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* @CLUTTER_FEATURE_STAGE_MULTIPLE: Set if multiple stages are supported.
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*
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* Runtime flags indicating specific features available via Clutter window
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* sysytem and graphics backend.
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*
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* Since: 0.4
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*/
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typedef enum
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{
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CLUTTER_FEATURE_TEXTURE_NPOT = (1 << 2),
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CLUTTER_FEATURE_SYNC_TO_VBLANK = (1 << 3),
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CLUTTER_FEATURE_TEXTURE_YUV = (1 << 4),
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CLUTTER_FEATURE_TEXTURE_READ_PIXELS = (1 << 5),
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CLUTTER_FEATURE_STAGE_STATIC = (1 << 6),
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CLUTTER_FEATURE_STAGE_USER_RESIZE = (1 << 7),
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CLUTTER_FEATURE_STAGE_CURSOR = (1 << 8),
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CLUTTER_FEATURE_SHADERS_GLSL = (1 << 9),
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CLUTTER_FEATURE_OFFSCREEN = (1 << 10),
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CLUTTER_FEATURE_STAGE_MULTIPLE = (1 << 11),
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CLUTTER_FEATURE_SWAP_EVENTS = (1 << 12)
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} ClutterFeatureFlags;
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gboolean clutter_feature_available (ClutterFeatureFlags feature);
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ClutterFeatureFlags clutter_feature_get_all (void);
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G_END_DECLS
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#endif /* __CLUTTER_FEATURE_H__ */
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