32c301e3cf
This adds a function that can turn an existing `bNodeTree` into an inlined one. The new node tree has all node groups, repeat zones, closures and bundles inlined. So it's just a flat tree that ideally can be consumed easily by render engines. As part of the process, it also does constant folding. The goal is to support more advanced features from geometry nodes (repeat zones, etc.) in shader nodes which the evaluator is more limited because it has to be able to run on the GPU. Creating an inlined `bNodeTree` is likely the most direct way to get but may also be limiting in the future. Since this is a fairly local change, it's likely still worth it to support these features in all render engines without having to make their evaluators significantly more complex. Some limitations apply here that do not apply in Geometry Nodes. For example, the iterations count in a repeat zone has to be a constant after constant folding. There is also a `Test Inlining Shader Nodes` operator that creates the inlined tree and creates a group node for it. This is just for testing purposes. #145811 will make this functionality available to the Python API as well so that external renderers can use it too.
463 lines
16 KiB
C++
463 lines
16 KiB
C++
/* SPDX-FileCopyrightText: 2008 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup spnode
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*/
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#pragma once
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#include "BLI_compute_context.hh"
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#include "BLI_vector.hh"
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#include "BKE_node.hh"
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#include "UI_interface.hh"
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#include "UI_interface_layout.hh"
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#include "UI_view2d.hh"
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struct ARegion;
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struct NodeInsertOfsData;
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struct View2D;
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struct bContext;
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struct bNode;
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struct bNodeLink;
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struct bNodeSocket;
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struct wmGizmoGroupType;
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struct wmKeyConfig;
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struct wmWindow;
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/* Outside of blender namespace to avoid Python documentation build error with `ctypes`. */
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extern "C" {
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extern const char *node_context_dir[];
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};
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namespace blender::ed::asset {
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struct AssetItemTree;
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}
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namespace blender::ed::space_node {
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struct NestedTreePreviews;
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/** Temporary data used in node link drag modal operator. */
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struct bNodeLinkDrag {
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/** Links dragged by the operator. */
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Vector<bNodeLink> links;
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/** Which side of the links is fixed. */
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eNodeSocketInOut in_out;
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/** Draw handler for the tooltip icon when dragging a link in empty space. */
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void *draw_handle;
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/** Temporarily stores the last picked link from multi-input socket operator. */
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bNodeLink *last_picked_multi_input_socket_link;
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/**
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* Temporarily stores the last hovered node for multi-input socket operator.
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* Store it to recalculate sorting after it is no longer hovered.
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*/
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bNode *last_node_hovered_while_dragging_a_link;
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/**
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* Temporarily stores the currently hovered socket for link swapping to allow reliably swap links
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* even when dragging multiple links at once. `nullptr`, when no socket is hovered.
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*/
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bNodeSocket *hovered_socket;
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/* The cursor position, used for drawing a + icon when dragging a node link. */
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std::array<int, 2> cursor;
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/** The node the drag started at. */
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bNode *start_node;
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/** The socket the drag started at. */
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bNodeSocket *start_socket;
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/** The number of links connected to the #start_socket when the drag started. */
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int start_link_count;
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bool swap_links = false;
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/* Data for edge panning */
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View2DEdgePanData pan_data;
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};
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struct SpaceNode_Runtime {
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float aspect;
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/** Mouse position for drawing socket-less links and adding nodes. */
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float2 cursor;
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std::optional<int> frame_identifier_to_highlight;
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/**
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* Indicates that the compositing int the space tree needs to be re-evaluated using
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* regular compositing pipeline.
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*/
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bool recalc_regular_compositing;
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/** Temporary data for modal linking operator. */
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std::unique_ptr<bNodeLinkDrag> linkdrag;
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/* XXX hack for translate_attach op-macros to pass data from transform op to insert_offset op */
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/** Temporary data for node insert offset (in UI called Auto-offset). */
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NodeInsertOfsData *iofsd;
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/**
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* Use this to store data for the displayed node tree. It has an entry for every distinct
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* nested node-group.
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*/
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Map<ComputeContextHash, std::unique_ptr<space_node::NestedTreePreviews>>
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tree_previews_per_context;
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/**
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* Temporary data for node add menu in order to provide longer-term storage for context pointers.
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* Recreated every time the root menu is opened. In the future this will be replaced with an "all
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* libraries" cache in the asset system itself.
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*
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* Stored with a shared pointer so that it can be forward declared.
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*/
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std::shared_ptr<asset::AssetItemTree> assets_for_menu;
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/**
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* Caches the sockets of which nodes can be synced. This can occasionally be expensive to compute
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* because it needs to traverse the tree. Also, we don't want to check whether syncing is
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* necessary for all nodes eagerly but only if a relevant node is visible to the user. The cache
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* is reset when something changes that may affect what nodes need to be synced.
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*/
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Map<int, bool> node_can_sync_states;
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};
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enum NodeResizeDirection {
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NODE_RESIZE_NONE = 0,
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NODE_RESIZE_TOP = (1 << 0),
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NODE_RESIZE_BOTTOM = (1 << 1),
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NODE_RESIZE_RIGHT = (1 << 2),
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NODE_RESIZE_LEFT = (1 << 3),
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};
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ENUM_OPERATORS(NodeResizeDirection, NODE_RESIZE_LEFT);
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/* Nodes draw without DPI - the view zoom is flexible. */
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#define BASIS_RAD (0.2f * U.widget_unit)
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#define NODE_DYS (U.widget_unit / 2)
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#define NODE_DY U.widget_unit
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#define NODE_ITEM_SPACING_Y (0.1f * U.widget_unit)
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#define NODE_WIDTH(node) (node.width * UI_SCALE_FAC)
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#define NODE_HEIGHT(node) (node.height * UI_SCALE_FAC)
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#define NODE_MARGIN_X (1.2f * U.widget_unit)
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#define NODE_SOCKSIZE (0.25f * U.widget_unit)
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#define NODE_MULTI_INPUT_LINK_GAP (0.25f * U.widget_unit)
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#define NODE_RESIZE_MARGIN (0.20f * U.widget_unit)
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#define NODE_LINK_RESOL 12
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/* `space_node.cc` */
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/**
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* Transform between View2Ds in the tree path.
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*/
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float2 space_node_group_offset(const SpaceNode &snode);
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int node_get_resize_cursor(NodeResizeDirection directions);
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/* `node_draw.cc` */
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/**
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* Usual convention here would be #node_socket_get_color(),
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* but that's already used (for setting a color property socket).
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*/
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void node_socket_color_get(const bContext &C,
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const bNodeTree &ntree,
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PointerRNA &node_ptr,
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const bNodeSocket &sock,
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float r_color[4]);
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const char *node_socket_get_label(const bNodeSocket *socket, const char *panel_label);
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void node_draw_space(const bContext &C, ARegion ®ion);
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void node_socket_add_tooltip(const bNodeTree &ntree, const bNodeSocket &sock, uiLayout &layout);
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/**
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* Update node draw order nodes based on selection: unselected nodes first, then selected,
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* then the active node at the very end. Relative order is kept intact.
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*/
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void tree_draw_order_update(bNodeTree &ntree);
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/** Return the nodes in draw order, with the top nodes at the end. */
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Array<bNode *> tree_draw_order_calc_nodes(bNodeTree &ntree);
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/** Return the nodes in reverse draw order, with the top nodes at the start. */
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Array<bNode *> tree_draw_order_calc_nodes_reversed(bNodeTree &ntree);
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void node_set_cursor(wmWindow &win, ARegion ®ion, SpaceNode &snode, const float2 &cursor);
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/* DPI scaled coords */
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float2 node_to_view(const float2 &co);
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void node_to_updated_rect(const bNode &node, rctf &r_rect);
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float2 node_from_view(const float2 &co);
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/* `node_ops.cc` */
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void node_operatortypes();
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void node_keymap(wmKeyConfig *keyconf);
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/* `node_select.cc` */
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rctf node_frame_rect_inside(const SpaceNode &snode, const bNode &node);
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bool node_or_socket_isect_event(const bContext &C, const wmEvent &event);
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bool node_deselect_all(bNodeTree &node_tree);
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void node_socket_select(bNode *node, bNodeSocket &sock);
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void node_socket_deselect(bNode *node, bNodeSocket &sock, bool deselect_node);
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void node_deselect_all_input_sockets(bNodeTree &node_tree, bool deselect_nodes);
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void node_deselect_all_output_sockets(bNodeTree &node_tree, bool deselect_nodes);
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/**
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* Select nodes that are paired to a selected node.
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*/
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void node_select_paired(bNodeTree &node_tree);
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void node_select_single(bContext &C, bNode &node);
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void NODE_OT_select(wmOperatorType *ot);
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void NODE_OT_select_all(wmOperatorType *ot);
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void NODE_OT_select_linked_to(wmOperatorType *ot);
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void NODE_OT_select_linked_from(wmOperatorType *ot);
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void NODE_OT_select_box(wmOperatorType *ot);
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void NODE_OT_select_circle(wmOperatorType *ot);
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void NODE_OT_select_lasso(wmOperatorType *ot);
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void NODE_OT_select_grouped(wmOperatorType *ot);
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void NODE_OT_select_same_type_step(wmOperatorType *ot);
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void NODE_OT_find_node(wmOperatorType *ot);
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/* `node_view.cc` */
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bool space_node_view_flag(
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bContext &C, SpaceNode &snode, ARegion ®ion, int node_flag, int smooth_viewtx);
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void NODE_OT_view_all(wmOperatorType *ot);
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void NODE_OT_view_selected(wmOperatorType *ot);
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void NODE_OT_backimage_move(wmOperatorType *ot);
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void NODE_OT_backimage_zoom(wmOperatorType *ot);
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void NODE_OT_backimage_fit(wmOperatorType *ot);
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void NODE_OT_backimage_sample(wmOperatorType *ot);
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/* `drawnode.cc` */
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float2 socket_link_connection_location(const bNode &node,
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const bNodeSocket &socket,
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const bNodeLink &link);
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NodeResizeDirection node_get_resize_direction(const SpaceNode &snode,
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const bNode *node,
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int x,
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int y);
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/* node socket batched drawing */
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void UI_node_socket_draw_cache_flush();
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void nodesocket_batch_start();
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void nodesocket_batch_end();
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void nodelink_batch_start(const SpaceNode &snode);
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void nodelink_batch_end(const SpaceNode &snode);
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/**
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* \note this is used for fake links in groups too.
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*/
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void node_draw_link(const bContext &C,
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const View2D &v2d,
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const SpaceNode &snode,
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const bNodeLink &link,
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bool selected);
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void node_draw_link_dragged(const bContext &C,
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const View2D &v2d,
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const SpaceNode &snode,
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const bNodeLink &link);
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/**
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* Don't do shadows if th_col3 is -1.
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*/
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void node_draw_link_bezier(const bContext &C,
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const View2D &v2d,
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const SpaceNode &snode,
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const bNodeLink &link,
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int th_col1,
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int th_col2,
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int th_col3,
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bool selected);
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std::array<float2, 4> node_link_bezier_points_dragged(const SpaceNode &snode,
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const bNodeLink &link);
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void node_link_bezier_points_evaluated(const bNodeLink &link,
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std::array<float2, NODE_LINK_RESOL + 1> &coords);
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std::optional<float2> link_path_intersection(const bNodeLink &link, Span<float2> path);
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void draw_nodespace_back_pix(const bContext &C,
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ARegion ®ion,
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SpaceNode &snode,
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bNodeInstanceKey parent_key);
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/* `node_add.cc` */
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bNode *add_node(const bContext &C, StringRef idname, const float2 &location);
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bNode *add_static_node(const bContext &C, int type, const float2 &location);
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void NODE_OT_add_reroute(wmOperatorType *ot);
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void NODE_OT_add_group(wmOperatorType *ot);
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void NODE_OT_add_group_asset(wmOperatorType *ot);
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void NODE_OT_add_object(wmOperatorType *ot);
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void NODE_OT_add_collection(wmOperatorType *ot);
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void NODE_OT_add_image(wmOperatorType *ot);
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void NODE_OT_add_mask(wmOperatorType *ot);
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void NODE_OT_add_material(wmOperatorType *ot);
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void NODE_OT_add_color(wmOperatorType *ot);
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void NODE_OT_add_import_node(wmOperatorType *ot);
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void NODE_OT_new_node_tree(wmOperatorType *ot);
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void NODE_OT_new_compositing_node_group(wmOperatorType *ot);
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void NODE_OT_add_group_input_node(wmOperatorType *ot);
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/* `node_group.cc` */
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StringRef node_group_idname(const bContext *C);
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void NODE_OT_group_make(wmOperatorType *ot);
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void NODE_OT_group_insert(wmOperatorType *ot);
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void NODE_OT_group_ungroup(wmOperatorType *ot);
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void NODE_OT_group_separate(wmOperatorType *ot);
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void NODE_OT_group_edit(wmOperatorType *ot);
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void NODE_OT_default_group_width_set(wmOperatorType *ot);
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/* `node_relationships.cc` */
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void update_multi_input_indices_for_removed_links(bNode &node);
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bool all_links_muted(const bNodeSocket &socket);
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/** Get the "main" socket based on the node declaration or an heuristic. */
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bNodeSocket *get_main_socket(bNodeTree &ntree, bNode &node, eNodeSocketInOut in_out);
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void NODE_OT_link(wmOperatorType *ot);
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void NODE_OT_link_make(wmOperatorType *ot);
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void NODE_OT_links_cut(wmOperatorType *ot);
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void NODE_OT_links_detach(wmOperatorType *ot);
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void NODE_OT_links_mute(wmOperatorType *ot);
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void NODE_OT_parent_set(wmOperatorType *ot);
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void NODE_OT_join(wmOperatorType *ot);
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void NODE_OT_attach(wmOperatorType *ot);
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void NODE_OT_detach(wmOperatorType *ot);
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void NODE_OT_link_viewer(wmOperatorType *ot);
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void NODE_OT_insert_offset(wmOperatorType *ot);
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wmKeyMap *node_link_modal_keymap(wmKeyConfig *keyconf);
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wmKeyMap *node_resize_modal_keymap(wmKeyConfig *keyconf);
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/* `node_edit.cc` */
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float2 node_link_calculate_multi_input_position(const float2 &socket_position,
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int index,
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int total_inputs);
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float node_socket_calculate_height(const bNodeSocket &socket);
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bool composite_node_active(bContext *C);
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/** Operator poll callback. */
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bool composite_node_editable(bContext *C);
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bool node_has_hidden_sockets(bNode *node);
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void node_set_hidden_sockets(bNode *node, int set);
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bool node_is_previewable(const SpaceNode &snode, const bNodeTree &ntree, const bNode &node);
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wmOperatorStatus node_render_changed_exec(bContext *, wmOperator *);
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bNodeSocket *node_find_indicated_socket(SpaceNode &snode,
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ARegion ®ion,
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const float2 &cursor,
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eNodeSocketInOut in_out);
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float node_link_dim_factor(const View2D &v2d, const bNodeLink &link);
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bool node_link_is_hidden_or_dimmed(const View2D &v2d, const bNodeLink &link);
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void remap_node_pairing(bNodeTree &dst_tree, const Map<const bNode *, bNode *> &node_map);
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void NODE_OT_duplicate(wmOperatorType *ot);
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void NODE_OT_delete(wmOperatorType *ot);
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void NODE_OT_delete_reconnect(wmOperatorType *ot);
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void NODE_OT_resize(wmOperatorType *ot);
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void NODE_OT_mute_toggle(wmOperatorType *ot);
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void NODE_OT_collapse_toggle(wmOperatorType *ot);
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void NODE_OT_hide_socket_toggle(wmOperatorType *ot);
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void NODE_OT_preview_toggle(wmOperatorType *ot);
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void NODE_OT_options_toggle(wmOperatorType *ot);
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void NODE_OT_node_copy_color(wmOperatorType *ot);
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void NODE_OT_deactivate_viewer(wmOperatorType *ot);
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void NODE_OT_activate_viewer(wmOperatorType *ot);
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void NODE_OT_test_inlining_shader_nodes(wmOperatorType *ot);
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void NODE_OT_read_viewlayers(wmOperatorType *ot);
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void NODE_OT_render_changed(wmOperatorType *ot);
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/**
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* \note clipboard_cut is a simple macro of copy + delete.
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*/
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void NODE_OT_clipboard_copy(wmOperatorType *ot);
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void NODE_OT_clipboard_paste(wmOperatorType *ot);
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void NODE_OT_shader_script_update(wmOperatorType *ot);
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void NODE_OT_viewer_border(wmOperatorType *ot);
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void NODE_OT_clear_viewer_border(wmOperatorType *ot);
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void NODE_OT_cryptomatte_layer_add(wmOperatorType *ot);
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void NODE_OT_cryptomatte_layer_remove(wmOperatorType *ot);
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/* `node_gizmo.cc` */
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void NODE_GGT_backdrop_transform(wmGizmoGroupType *gzgt);
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void NODE_GGT_backdrop_crop(wmGizmoGroupType *gzgt);
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void NODE_GGT_backdrop_glare(wmGizmoGroupType *gzgt);
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void NODE_GGT_backdrop_corner_pin(wmGizmoGroupType *gzgt);
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void NODE_GGT_backdrop_box_mask(wmGizmoGroupType *gzgt);
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void NODE_GGT_backdrop_ellipse_mask(wmGizmoGroupType *gzgt);
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void NODE_GGT_backdrop_split(wmGizmoGroupType *gzgt);
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/* `node_geometry_attribute_search.cc` */
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void node_geometry_add_attribute_search_button(const bContext &C,
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const bNode &node,
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PointerRNA &socket_ptr,
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uiLayout &layout,
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StringRef placeholder = "");
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/* `node_geometry_layer_search.cc` */
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void node_geometry_add_layer_search_button(const bContext &C,
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const bNode &node,
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PointerRNA &socket_ptr,
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uiLayout &layout,
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StringRef placeholder = "");
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/* `node_context_path.cc` */
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Vector<ui::ContextPathItem> context_path_for_space_node(const bContext &C);
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/* `link_drag_search.cc` */
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void invoke_node_link_drag_add_menu(bContext &C,
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bNode &node,
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bNodeSocket &socket,
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const float2 &cursor);
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/* `add_menu_assets.cc` */
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MenuType add_catalog_assets_menu_type();
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MenuType add_unassigned_assets_menu_type();
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MenuType add_root_catalogs_menu_type();
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/* `node_sync_sockets.cc` */
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void NODE_OT_sockets_sync(wmOperatorType *ot);
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/* node_socket_tooltip.cc */
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void build_socket_tooltip(uiTooltipData &tip_data,
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bContext &C,
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uiBut *but,
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const bNodeTree &tree,
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const bNodeSocket &socket);
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} // namespace blender::ed::space_node
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