mirror of
https://github.com/brl/mutter.git
synced 2024-09-20 14:35:48 -04:00
a3e8e0025a
The OffscreenEffect should set up the off screen draw buffer so that it has the same projection and modelview as if it where on screen; we achieve that by setting up the viewport to be the same size of the stage but with an initial offset given by the left-most vertex of the actor. When we paint the texture attached to the FBO we then set up the modelview matrix of the on screen draw buffer so that it's the same as the stage one: this way, the texture will be painted in screen coordinates and it will occupy the same area as the actor would have had.
105 lines
3.7 KiB
C
105 lines
3.7 KiB
C
/*
|
|
* Clutter.
|
|
*
|
|
* An OpenGL based 'interactive canvas' library.
|
|
*
|
|
* Copyright (C) 2010 Intel Corporation.
|
|
*
|
|
* 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/>.
|
|
*
|
|
* Author:
|
|
* Emmanuele Bassi <ebassi@linux.intel.com>
|
|
*/
|
|
|
|
#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
|
|
#error "Only <clutter/clutter.h> can be included directly."
|
|
#endif
|
|
|
|
#ifndef __CLUTTER_OFFSCREEN_EFFECT_H__
|
|
#define __CLUTTER_OFFSCREEN_EFFECT_H__
|
|
|
|
#include <clutter/clutter-effect.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define CLUTTER_TYPE_OFFSCREEN_EFFECT (clutter_offscreen_effect_get_type ())
|
|
#define CLUTTER_OFFSCREEN_EFFECT(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), CLUTTER_TYPE_OFFSCREEN_EFFECT, ClutterOffscreenEffect))
|
|
#define CLUTTER_IS_OFFSCREEN_EFFECT(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), CLUTTER_TYPE_OFFSCREEN_EFFECT))
|
|
#define CLUTTER_OFFSCREEN_EFFECT_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), CLUTTER_TYPE_OFFSCREEN_EFFECT, ClutterOffscreenEffectClass))
|
|
#define CLUTTER_IS_OFFSCREEN_EFFECT_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), CLUTTER_TYPE_OFFSCREEN_EFFECT))
|
|
#define CLUTTER_OFFSCREEN_EFFECT_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), CLUTTER_TYPE_OFFSCREEN_EFFECT, ClutterOffscreenEffectClass))
|
|
|
|
typedef struct _ClutterOffscreenEffect ClutterOffscreenEffect;
|
|
typedef struct _ClutterOffscreenEffectPrivate ClutterOffscreenEffectPrivate;
|
|
typedef struct _ClutterOffscreenEffectClass ClutterOffscreenEffectClass;
|
|
|
|
/**
|
|
* ClutterOffscreenEffect:
|
|
*
|
|
* The #ClutterOffscreenEffect structure contains only private data
|
|
* and should be accessed using the provided API
|
|
*
|
|
* Since: 1.4
|
|
*/
|
|
struct _ClutterOffscreenEffect
|
|
{
|
|
/*< private >*/
|
|
ClutterEffect parent_instance;
|
|
|
|
ClutterOffscreenEffectPrivate *priv;
|
|
};
|
|
|
|
/**
|
|
* ClutterOffscreenEffectClass:
|
|
* @create_target: virtual function
|
|
* @paint_target: virtual function
|
|
*
|
|
* The #ClutterOffscreenEffectClass structure contains only private data
|
|
*
|
|
* Since: 1.4
|
|
*/
|
|
struct _ClutterOffscreenEffectClass
|
|
{
|
|
/*< private >*/
|
|
ClutterEffectClass parent_class;
|
|
|
|
/*< public >*/
|
|
CoglHandle (* create_target) (ClutterOffscreenEffect *effect,
|
|
gfloat min_width,
|
|
gfloat min_height);
|
|
void (* paint_target) (ClutterOffscreenEffect *effect);
|
|
|
|
/*< private >*/
|
|
void (* _clutter_offscreen1) (void);
|
|
void (* _clutter_offscreen2) (void);
|
|
void (* _clutter_offscreen3) (void);
|
|
void (* _clutter_offscreen4) (void);
|
|
void (* _clutter_offscreen5) (void);
|
|
void (* _clutter_offscreen6) (void);
|
|
void (* _clutter_offscreen7) (void);
|
|
};
|
|
|
|
GType clutter_offscreen_effect_get_type (void) G_GNUC_CONST;
|
|
|
|
CoglHandle clutter_offscreen_effect_get_target (ClutterOffscreenEffect *effect);
|
|
|
|
void clutter_offscreen_effect_paint_target (ClutterOffscreenEffect *effect);
|
|
CoglHandle clutter_offscreen_effect_create_target (ClutterOffscreenEffect *effect,
|
|
gfloat width,
|
|
gfloat height);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __CLUTTER_OFFSCREEN_EFFECT_H__ */
|