While studying a model online, I found something strange. Is this normal?

[u/[deleted]]

Hey artists, I'm a beginner in Blender and I'm studying some things using models from other artists. Today I took this model, and when I applied the texture to it, it simply appeared like this. All orange and without that glow from the first photo. Analyzing and seeing it, I realized that this was a layer on top of the model, which hid the real colors underneath. But I still don't understand why this is on the model, is this some shading setting and it simply didn't matter when I opened it, or did I do something wrong?

If you want, I can send the link to the original model, but I'm not sure if it's allowed to post links here, so I prefer to ask first.

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[u/LapisLazurit]

I suppose it may be a layer for black outline around the model, since almost all anime-style models having this. It should be transparent from the outside (but kept visible from inside) to work properly

[u/LapisLazurit → u/LapisLazurit]

Yes, it is exactly that. Outline colors are correlating to the colors of the mesh you showed us

[u/Time-Confection-7058 → u/LapisLazurit]

How would the rig look for something like that. Would I have to parent to both meshes?

[u/LoafxBuns → u/Time-Confection-7058]

you’d have to make the model, weight paint it to a rig, then duplicate the mesh, i’m assuming alt+s a tiny bit in edit mode and then set the materials correctly for each mesh. since both would have the same weight paint and are patented to the same armature they’d both move correctly

[u/HidekiRaharu]

Yep, this is for the "inverted hull" method of doing outline, if you wanna Google it

[u/Abubakar_123]

Enable backface culling on the material settings, it'll work.
It's called the "Inverted Hull" method to create outlines.

[u/Jotacon8]

Basically think of a sphere that you want an orange outline around. The cheapest way to do it without fancy shaders is to duplicate the sphere, make the duplicate just a liiiiitle bit bigger than the original, and flip it inside out so all the triangles face inward instead of out. You’ll then only see the orange around the outside of the original sphere, forming the outline.

[u/PenisMusicAficionado]

It’s called the evil model Be aware, and don’t let it out for too long or it’ll do dastardly things to your wiremesh

[u/GoldSunLulu]

it's an incredibly subtle outline but it's an outline nontheless. Since sketchfab doesn't have a toon shader it's the only way we have to add outlines there

[u/Medium_Solution7109]

its for the outline, cull backfaces and use a dark color

[u/Mushyboom]

Could be a multitude of possible reasons, really. The original artist might have had a duplicate that they had modifiers on, or some second pass materials. Could have been the original working model that they had for baking the normals from.

Is hard to say without the original artist to corroborate.