12a5bf2e06
*** This is an API change *** The create_target() virtual function should return a CoglHandle to a texture; clutter_offscreen_effect_get_target(), instead, returns a CoglMaterial to be painted in the implementation of the paint_target() virtual function. Instead of equating textures with materials, and confusing the user of the API, we should mark the difference more prominently. First of all, we should return a CoglMaterial* (now that we have that as a public type) in get_target(); having handles all over the place does not make it easier to distinguish the semantics of the virtual functions. Then we should rename create_target() to create_texture(), to make it clear that what should be returned is a texture that is used as the backing for the offscreen framebuffer.
104 lines
3.7 KiB
C
104 lines
3.7 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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* Copyright (C) 2010 Intel Corporation.
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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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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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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_OFFSCREEN_EFFECT_H__
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#define __CLUTTER_OFFSCREEN_EFFECT_H__
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#include <clutter/clutter-effect.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_OFFSCREEN_EFFECT (clutter_offscreen_effect_get_type ())
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#define CLUTTER_OFFSCREEN_EFFECT(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), CLUTTER_TYPE_OFFSCREEN_EFFECT, ClutterOffscreenEffect))
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#define CLUTTER_IS_OFFSCREEN_EFFECT(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), CLUTTER_TYPE_OFFSCREEN_EFFECT))
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#define CLUTTER_OFFSCREEN_EFFECT_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), CLUTTER_TYPE_OFFSCREEN_EFFECT, ClutterOffscreenEffectClass))
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#define CLUTTER_IS_OFFSCREEN_EFFECT_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), CLUTTER_TYPE_OFFSCREEN_EFFECT))
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#define CLUTTER_OFFSCREEN_EFFECT_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), CLUTTER_TYPE_OFFSCREEN_EFFECT, ClutterOffscreenEffectClass))
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typedef struct _ClutterOffscreenEffect ClutterOffscreenEffect;
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typedef struct _ClutterOffscreenEffectPrivate ClutterOffscreenEffectPrivate;
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typedef struct _ClutterOffscreenEffectClass ClutterOffscreenEffectClass;
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/**
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* ClutterOffscreenEffect:
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*
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* The #ClutterOffscreenEffect structure contains only private data
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* and should be accessed using the provided API
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*
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* Since: 1.4
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*/
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struct _ClutterOffscreenEffect
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{
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/*< private >*/
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ClutterEffect parent_instance;
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ClutterOffscreenEffectPrivate *priv;
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};
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/**
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* ClutterOffscreenEffectClass:
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* @create_texture: virtual function
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* @paint_target: virtual function
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*
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* The #ClutterOffscreenEffectClass structure contains only private data
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*
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* Since: 1.4
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*/
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struct _ClutterOffscreenEffectClass
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{
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/*< private >*/
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ClutterEffectClass parent_class;
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/*< public >*/
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CoglHandle (* create_texture) (ClutterOffscreenEffect *effect,
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gfloat min_width,
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gfloat min_height);
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void (* paint_target) (ClutterOffscreenEffect *effect);
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/*< private >*/
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void (* _clutter_offscreen1) (void);
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void (* _clutter_offscreen2) (void);
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void (* _clutter_offscreen3) (void);
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void (* _clutter_offscreen4) (void);
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void (* _clutter_offscreen5) (void);
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void (* _clutter_offscreen6) (void);
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void (* _clutter_offscreen7) (void);
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};
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GType clutter_offscreen_effect_get_type (void) G_GNUC_CONST;
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CoglMaterial *clutter_offscreen_effect_get_target (ClutterOffscreenEffect *effect);
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void clutter_offscreen_effect_paint_target (ClutterOffscreenEffect *effect);
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CoglHandle clutter_offscreen_effect_create_texture (ClutterOffscreenEffect *effect,
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gfloat width,
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gfloat height);
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G_END_DECLS
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#endif /* __CLUTTER_OFFSCREEN_EFFECT_H__ */
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