Leo Santos


About Me

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United States of America


Recent Forum Posts

GLTF 2.0 file format Feb. 20, 2018, 12:51 p.m.

Hey Leo! I'm here because I would also like a GLTF exporter!
Hi Barrett! :-)

what could be done is to use houdini fbx export and blender GLTF exporter
Yeah, there are other FBX to GLTF options out there as well. But it's very cumbersome, not to mention it doesn't support exporting Pbr materials. Even a basic translation of Principled shaders to Gltf Pbr Material would be incredibly welcome!


"Wrapping" a principled shader into a Digital Asset Jan. 5, 2018, 5:02 p.m.


Super beginner question here: How do I “wrap” a Principled shader into a simpler digital asset that only exposes a few of the parameters?

I'm collapsing it into a subnetwork, then “promoting” the parameters I want, but it seems to break the material.

<edit>I think the problem is that when I turn it into a subnetwork, I can't drag the subnetwork directly onto an object, or select it as a “valid” material anymore. Is there a way to flag a subnetwork's output as a a valid material?

This is the digital asset's interface (param names are a little different than default Principled shader names):

This is what the asset looks like inside:

Explanation: I'm using a custom 3D engine with a PBR shader that uses a few of the same parameters as the Principled shader (with different names). I wanted to take advantage that Houdini already does a good job of displaying the parameters I need (roughness, metalness, etc) in the viewer, so I'm going to use that shader and export my materials' needed parameters to a .json file using a python script from Houdini.

However, when I collapse a Principled shader into a subnetwork so that I can convert it into a reusable digital asset, it instantly stops working! How do I get around that?

Please notice that properly understanding shader networks is well beyond my scope right now, I just wanted to reuse an existing shader and simplify its interface without building my own shader from scratch.

Any help appreciated.

GLTF 2.0 file format Dec. 24, 2017, 7:48 p.m.

I'd love to post the link, but was unable to locate a “Find RFE” section or similar on the website to use the number I was provided (87080).

There's an easy to find “Report RFE” section, but the “Find RFE” counterpart is not obvious.