Material Linker Node - is this a bug or is it a feature?

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Hi Y'all (1st post),

I'm a new Houdini (Indie) user (but not new to 3D) and I'm just working my way through all the learning material to introduce myself to Houdini's magical ways! I thought I'd start with the most recent content as I'm using H21; being the Foundations series:

https://www.sidefx.com/tutorials/h21-foundations-welcome/ [www.sidefx.com]

https://www.sidefx.com/tutorials/h21-foundations-smashing-wineglass/ [www.sidefx.com]

Firstly, amazing learning content (just so impressed being from a educational background) and I've absorbed everything I can from dissecting them and my mind is truly blown (coming from MODO and 3DS etc) ...basically already smitten with Houdini! :P

There's just one thing I noticed during both of these tutorials (a difference between my own Solaris 'MaterialLinker-NODE' view, and Robert Magee's in the Tutorials).

As such, I just wanted to check that what I'm seeing in my layout is normal (having duplicated the tutorials verbatim) as there's a discrepancy between them and I just thought I'd check with the dev's/community in case I goofed somewhere along the way!? Or is it just a tree display setting/filter option type thing?

It's only a small difference and nothing is broken, but there appears to be a duplicate series of references to scene assets that aren't shown in the tutorial. And then it did the exact same thing again with the second tutorial at which point it freaked me out!

NOTE: The Scene Graph looks normal despite the material linker panel showing duplicate asset references... also the duplicates appear to differ as they contain 2 meshes per asset. thus I was unsure if this represents the 'inside and outside' of the models (as 2 sided requires an additional mesh to draw the other side) ...but that's just a guess!

If its not an issue that's fine, but I just figured that as this is a basic scene there's little to confuse currently, but if it was a busy production scene with say a 1000+ assets, then that would mean there could be an additional 2000+ phantom asset references (eek), which would be a recipe for confusion! As such, I just thought it best to check right at the start so I don't adopt any misunderstanding's of Houdini's magical worksflow early on in my learning path (which I'm so enjoying BTW, Houdini is just wild)! :P

As such is this a bug or is it a feature?

Naturally, any help or advice is very much appreciated - Thanks!
Edited by Magical_Unicorn - yesterday 13:03:53

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Hi,

I posted a bug report about duplicates in the geometry tree for solaris a couple of weeks back.
They have patched something relevant in that area in the last week mentioning light linker but I believe it's
fixed anything relevant to the tree itself.....seems to have sorted my issue.

21.0.587 Fix a problem where the lightlinker UI was getting some items added to the geometry tree twice.

Download the latest daily version of Houdini, currently 21.0.591 and you should be good.
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Hi EZiniT,

Firstly a huge thanks for reaching out, as that totally nailed it! Yeah I was initially completely focused on the geometry but later realized that seemingly everything was getting sucked into that hungry vortex (lighting, cameras etc)! I was a little unsure about the daily builds initially so I just opted for the studio version (like NVIDIA Drivers) but after that epiphany, I'll be sure to run both from now on and keep them up to date! I was hoping someone else had experienced this so I just wanted to reach out and see before I filed a bug report too!

Many thanks, kudos!
Edited by Magical_Unicorn - yesterday 21:57:31

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