Problem with transparent Cube

[Leanxp]

I have 3 models

1. Door frame
2. Astronaut
3. Cube transparent

I've been using blender to get that transparent cube to be in the first layer and not to show astronaut, but it's impossible...
This is my idea, like a portal AR.

https://imgur.com/Hz1vAaW

[elalish]

Yeah, glTF is based on physical materials, and it seems like what you want is a non-physical material, so that's likely the trouble. I think you'd need some kind of new glTF extension that specifies the behavior you want.

[Leanxp]

Is there no way to enable a transparent material that makes that layer (material) above the astronaut object?

[elalish]

By "above" do you mean "occludes"?

[Leanxp]

Exactly!! I need to deploy an "hider" (invisible material) but it's impossible in gltf...
Something like this: https://imgur.com/OmsTxqu

[elalish]

Yes, as I say, this is a non-physical material (there's nothing you could build in the real world that would do this), hence why it's not in glTF. However, it's a good idea, and hence could be a useful extension to add.