Geometry Nodes: Switch Node Fields Update

This update of the Switch node allows for field compatible types
to be switched through the node. This includes the following:

Float, Int, Bool, String, Vector, and Color

The remaining types are processed with the orginal code:

Geometry, Object, Collection, Texture, and Material

Because the old types require a diffent "switch" socket than the
field types, versioning for old files is included to move links
of those types to a new switch socket. Once fields of other types
are supported, this node can be updated to support them as well.

Differential Revision: https://developer.blender.org/D12642

1 files changed, 26 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_300.c b/source/blender/blenloader/intern/versioning_300.c
index 11b6ad9b8ea..5b436d59213 100644
--- a/source/blender/blenloader/intern/versioning_300.c
+++ b/source/blender/blenloader/intern/versioning_300.c
@@ -617,6 +617,32 @@ void do_versions_after_linking_300(Main *bmain, ReportList *UNUSED(reports))
     do_versions_idproperty_ui_data(bmain);
   }
 
+  if (!MAIN_VERSION_ATLEAST(bmain, 300, 32)) {
+    /* Update Switch Node Non-Fields switch input to Switch_001. */
+    LISTBASE_FOREACH (bNodeTree *, ntree, &bmain->nodetrees) {
+      if (ntree->type != NTREE_GEOMETRY) {
+        continue;
+      }
+
+      LISTBASE_FOREACH (bNodeLink *, link, &ntree->links) {
+        if (link->tonode->type == GEO_NODE_SWITCH) {
+          if (STREQ(link->tosock->identifier, "Switch")) {
+            bNode *to_node = link->tonode;
+
+            uint8_t mode = ((NodeSwitch *)to_node->storage)->input_type;
+            if (ELEM(mode,
+                     SOCK_GEOMETRY,
+                     SOCK_OBJECT,
+                     SOCK_COLLECTION,
+                     SOCK_TEXTURE,
+                     SOCK_MATERIAL)) {
+              link->tosock = link->tosock->next;
+            }
+          }
+        }
+      }
+    }
+  }
   /**
    * Versioning code until next subversion bump goes here.
    *