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  • Published 26 May 2025

Add a null node (placeholder) like Houdini

Houdini has a node that serves as a placeholder and does nothing, you can simply pass geomtry through it and have it be named whatever you like. It is useful when you have a node that branches off and want a buffer node in betwen so you can add a node before the branching off point easily. Like if one node becomes 3, adding the empty node before allows you to add a node before the empty and effect the following : nodes, otherwise if the empty node was something you use, it would effec that also. Right now I use join geometry (without joining) for this purpose but it looks a bit jank and I'm not sure if it's bad for performance.

Literally just a placeholder for organization with no other purpose. I do get in Houdini it's used often to reference an object from another but it would still be useful in blender for just organization. bb Screenshot_20250527_130311.png

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Development Status: Open

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dilroop-gill
26 May 2025

8 Comments

pablovazquez

you can simply pass geomtry through it and have it be named whatever you like

Then maybe use the Set Geometry Name node?

docs.blender.org/manual/en/latest/modeling/geometry_nodes/geometry/write/set_geometry_name.html

2
Lauloque

So it's a node whose only job is to provide a socket to plug things for a while? Maybe i'm not understanding well, but that sounds like what the reroute node from the Layout category already does pretty well:

demo picture

It's often used to... Well... Reroute noodles to help make them more readable, and it can be given a label e.g. to tell the user what data is it carrying so you don't have to scroll the view to its source, it also adds arrows on the noodles between reroutes to clearly indicate the data flow direction.

And bonus point: if you have the Node Wrangler addon enabled, you can ⇧ Shift Right🖱️ drag over an existing noodle to make a reroute on it. Which makes adding reroutes really fast.

3
cmbasnett

You have just described what the reroute node does.

dilroop-gill Author

Fine I want the reroute node to have the option of being skinned like any other node for consistency with the colorbar uptop for the name and have it say geo on the left and right with the label called null. The dot is not helpfull visually for me.

1
pablovazquez

You want a node that has geometry input and output but does nothing.

As I mentioned you can have that by using the Set Geometry Name node, without setting a name.

geometry name

llealloo

This would be cool, or it would be neat to be able to change the size or shape of the reroute node

dilroop-gill Author

Just going to keep using join geometry without joining for this purpose doesnt seem to be bad for performance, just dont like the reroutes look, makes my eyes glaze

llealloo

I agree it would be nice to be able to set a different icon for the reroute node!

1