6cdc12dc74
The design changes coming with pynodes for the node editor allow editing multiple node groups or pinning. This is great for working on different node groups without switching between them all the time, but it causes a problem for viewer nodes: these nodes all write to the same Image data by design, causing access conflicts and in some cases memory corruption. This was not a problem before pynodes because the editor would only allow 1 edited node group at any time. With the new flexibility of node editors this restriction is gone. In order to avoid concurrent write access to the viewer image buffer and resolve the ambiguity this patch adds an "active viewer key" to the scene->nodetree (added in bNodeTree instead of Scene due to otherwise circular DNA includes). This key identifies a specific node tree/group instance, which enables the compositor to selectively enable only 1 viewer node. The active viewer key is switched when opening/closing node groups (push/pop on the snode->treepath stack) or when selecting a viewer node. This way only the "last edited" viewer will be active. Eventually it would be nicer if each viewer had its own buffer per node space so one could actually compare viewers without switching. But that is a major redesign of viewer nodes and images, not a quick fix for bcon4 ...
112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2009 Blender Foundation.
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* All rights reserved.
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*
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*
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* Contributor(s): Blender Foundation
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file ED_node.h
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* \ingroup editors
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*/
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#ifndef __ED_NODE_H__
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#define __ED_NODE_H__
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struct ID;
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struct Main;
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struct Material;
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struct Scene;
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struct Tex;
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struct bContext;
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struct bNodeTree;
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struct bNode;
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struct bNodeType;
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struct bNodeSocketType;
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struct bNodeTree;
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struct bNodeTreeType;
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struct ScrArea;
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struct Scene;
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struct View2D;
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typedef enum {
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NODE_TOP = 1,
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NODE_BOTTOM = 2,
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NODE_LEFT = 4,
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NODE_RIGHT = 8
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} NodeBorder;
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/* space_node.c */
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int ED_node_tree_path_length(struct SpaceNode *snode);
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void ED_node_tree_path_get(struct SpaceNode *snode, char *value);
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void ED_node_tree_path_get_fixedbuf(struct SpaceNode *snode, char *value, int max_length);
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void ED_node_tree_start(struct SpaceNode *snode, struct bNodeTree *ntree, struct ID *id, struct ID *from);
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void ED_node_tree_push(struct SpaceNode *snode, struct bNodeTree *ntree, struct bNode *gnode);
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void ED_node_tree_pop(struct SpaceNode *snode);
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int ED_node_tree_depth(struct SpaceNode *snode);
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struct bNodeTree *ED_node_tree_get(struct SpaceNode *snode, int level);
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void ED_node_set_active_viewer_key(struct SpaceNode *snode);
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/* drawnode.c */
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void ED_node_init_butfuncs(void);
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void ED_init_custom_node_type(struct bNodeType *ntype);
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void ED_init_custom_node_socket_type(struct bNodeSocketType *stype);
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void ED_init_standard_node_socket_type(struct bNodeSocketType *stype);
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void ED_init_node_socket_type_virtual(struct bNodeSocketType *stype);
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void ED_node_sample_set(const float col[4]);
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void ED_node_draw_snap(struct View2D *v2d, const float cent[2], float size, NodeBorder border);
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/* node_draw.c */
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void ED_node_tree_update(const struct bContext *C);
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void ED_node_tag_update_id(struct ID *id);
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void ED_node_tag_update_nodetree(struct Main *bmain, struct bNodeTree *ntree);
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void ED_node_sort(struct bNodeTree *ntree);
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/* node_relationships.c */
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void ED_node_link_intersect_test(struct ScrArea *sa, int test);
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void ED_node_link_insert(struct ScrArea *sa);
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/* node_edit.c */
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void ED_node_set_tree_type(struct SpaceNode *snode, struct bNodeTreeType *typeinfo);
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int ED_node_is_compositor(struct SpaceNode *snode);
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int ED_node_is_shader(struct SpaceNode *snode);
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int ED_node_is_texture(struct SpaceNode *snode);
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void ED_node_shader_default(const struct bContext *C, struct ID *id);
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void ED_node_composit_default(const struct bContext *C, struct Scene *scene);
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void ED_node_texture_default(const struct bContext *C, struct Tex *tex);
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int ED_node_select_check(ListBase *lb);
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void ED_node_post_apply_transform(struct bContext *C, struct bNodeTree *ntree);
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void ED_node_set_active(struct Main *bmain, struct bNodeTree *ntree, struct bNode *node);
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void ED_node_composite_job(const bContext *C, struct bNodeTree *nodetree, struct Scene *scene_owner);
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/* node_ops.c */
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void ED_operatormacros_node(void);
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/* node_view.c */
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int ED_space_node_color_sample(struct SpaceNode *snode, struct ARegion *ar, int mval[2], float r_col[3]);
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#endif /* __ED_NODE_H__ */
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