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clutter/paint-nodes: Expose ClutterLayerNode

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ClutterLayerNode is a private paint node that paints the
contents of its subnodes into an offscreen buffer, then
paints this entire offscreen buffer at the previous draw
framebuffer with the given opacity.

It is specially interesting to the future ClutterContent
implementation of MetaShapedTexture, for the NVidia and
rotation cases where the contents are painted on an
offscreen.

Expose ClutterLayerNode as public API.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/405
This commit is contained in:
Georges Basile Stavracas Neto 2019-01-22 19:13:00 -02:00
parent d5262f0f4d
commit 41ece851d6
3 changed files with 29 additions and 32 deletions
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24
clutter/clutter/clutter-paint-node-private.h
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@ -145,30 +145,6 @@ ClutterPaintNode * clutter_paint_node_get_parent (Clutter
G_GNUC_INTERNAL
CoglFramebuffer * clutter_paint_node_get_framebuffer (ClutterPaintNode *node);
#define CLUTTER_TYPE_LAYER_NODE (_clutter_layer_node_get_type ())
#define CLUTTER_LAYER_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_LAYER_NODE, ClutterLayerNode))
#define CLUTTER_IS_LAYER_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_LAYER_NODE))
/*
* ClutterLayerNode:
*
* The #ClutterLayerNode structure is an opaque
* type whose members cannot be directly accessed.
*
* Since: 1.10
*/
typedef struct _ClutterLayerNode ClutterLayerNode;
typedef struct _ClutterLayerNodeClass ClutterLayerNodeClass;
GType _clutter_layer_node_get_type (void) G_GNUC_CONST;
ClutterPaintNode * _clutter_layer_node_new (const CoglMatrix *projection,
const cairo_rectangle_t *viewport,
float width,
float height,
guint8 opacity);
G_END_DECLS
#endif /* __CLUTTER_PAINT_NODE_PRIVATE_H__ */

14
clutter/clutter/clutter-paint-nodes.c
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@ -1079,11 +1079,9 @@ clutter_clip_node_new (void)
}
/*
* ClutterLayerNode (private)
* ClutterLayerNode
*/
#define clutter_layer_node_get_type _clutter_layer_node_get_type
struct _ClutterLayerNode
{
ClutterPaintNode parent_instance;
@ -1269,11 +1267,11 @@ clutter_layer_node_init (ClutterLayerNode *self)
* Since: 1.10
*/
ClutterPaintNode *
_clutter_layer_node_new (const CoglMatrix *projection,
const cairo_rectangle_t *viewport,
float width,
float height,
guint8 opacity)
clutter_layer_node_new (const CoglMatrix *projection,
const cairo_rectangle_t *viewport,
float width,
float height,
guint8 opacity)
{
ClutterLayerNode *res;
CoglColor color;

23
clutter/clutter/clutter-paint-nodes.h
View File

@ -143,6 +143,29 @@ CLUTTER_EXPORT
ClutterPaintNode * clutter_text_node_new (PangoLayout *layout,
const ClutterColor *color);
#define CLUTTER_TYPE_LAYER_NODE (clutter_layer_node_get_type ())
#define CLUTTER_LAYER_NODE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_LAYER_NODE, ClutterLayerNode))
#define CLUTTER_IS_LAYER_NODE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_LAYER_NODE))
/*
* ClutterLayerNode:
*
* The #ClutterLayerNode structure is an opaque
* type whose members cannot be directly accessed.
*/
typedef struct _ClutterLayerNode ClutterLayerNode;
typedef struct _ClutterLayerNodeClass ClutterLayerNodeClass;
CLUTTER_EXPORT
GType clutter_layer_node_get_type (void) G_GNUC_CONST;
CLUTTER_EXPORT
ClutterPaintNode * clutter_layer_node_new (const CoglMatrix *projection,
const cairo_rectangle_t *viewport,
float width,
float height,
guint8 opacity);
G_END_DECLS
#endif /* __CLUTTER_PAINT_NODES_H__ */