Nodes: Remove unnecessary node tree socket tagging

`SOCK_IN_USE` is now set in `update_socket_used_tags` in
`node_tree_update.cc` when a node tree is changed.
It doesn't need to run every single redraw. Removing this
results in a small speedup of 0.4 ms when drawing a tree
with about 4000 nodes (from about 70 ms total).

Differential Revision: https://developer.blender.org/D13645

3 files changed, 0 insertions, 22 deletions

diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h
index 7fbf9de53ce..5c35ff69233 100644
--- a/source/blender/blenkernel/BKE_node.h
+++ b/source/blender/blenkernel/BKE_node.h
@@ -827,7 +827,6 @@ void nodeClearActiveID(struct bNodeTree *ntree, short idtype);
 struct bNode *nodeGetActiveTexture(struct bNodeTree *ntree);
 
 int nodeSocketIsHidden(const struct bNodeSocket *sock);
-void ntreeTagUsedSockets(struct bNodeTree *ntree);
 void nodeSetSocketAvailability(struct bNodeTree *ntree,
                                struct bNodeSocket *sock,
                                bool is_available);
diff --git a/source/blender/blenkernel/intern/node.cc b/source/blender/blenkernel/intern/node.cc
index e5aa28f8e0a..e05d452ca50 100644
--- a/source/blender/blenkernel/intern/node.cc
+++ b/source/blender/blenkernel/intern/node.cc
@@ -4304,26 +4304,6 @@ void ntreeUpdateNodeLevels(bNodeTree *ntree)
   }
 }
 
-void ntreeTagUsedSockets(bNodeTree *ntree)
-{
-  /* first clear data */
-  LISTBASE_FOREACH (bNode *, node, &ntree->nodes) {
-    LISTBASE_FOREACH (bNodeSocket *, sock, &node->inputs) {
-      sock->flag &= ~SOCK_IN_USE;
-    }
-    LISTBASE_FOREACH (bNodeSocket *, sock, &node->outputs) {
-      sock->flag &= ~SOCK_IN_USE;
-    }
-  }
-
-  LISTBASE_FOREACH (bNodeLink *, link, &ntree->links) {
-    link->fromsock->flag |= SOCK_IN_USE;
-    if (!(link->flag & NODE_LINK_MUTED)) {
-      link->tosock->flag |= SOCK_IN_USE;
-    }
-  }
-}
-
 void ntreeUpdateAllNew(Main *main)
 {
   Vector<bNodeTree *> new_ntrees;
diff --git a/source/blender/editors/space_node/node_draw.cc b/source/blender/editors/space_node/node_draw.cc
index 635ef41d859..2d3c42b16d1 100644
--- a/source/blender/editors/space_node/node_draw.cc
+++ b/source/blender/editors/space_node/node_draw.cc
@@ -2380,7 +2380,6 @@ static void node_update_nodetree(const bContext &C,
 {
   /* Make sure socket "used" tags are correct, for displaying value buttons. */
   SpaceNode *snode = CTX_wm_space_node(&C);
-  ntreeTagUsedSockets(&ntree);
 
   count_multi_input_socket_links(ntree, *snode);