Substance painter UDIM textures vs Material IDs

Filip5

Hello, his is more of a question than an issue, but this thing  came across my mind and I wonder if I am right.

The thing is, one could add multiple materials in a 3D app to a single object, which are automatically presented as different texture set lists in SP. Hovewer, if you use just one material, and then use UDIM textures ( reffering to multiple UV tiles), SP also divides this into multiple texture set lists. Does that mean, UDIM textures and Material ID are more-less the same in terms of texturing ?

poopipe

UDIM is simply a standard for organising materials so in a functional sense yes, they're the same.

The benefit of UDIM is that somebody else has done the work of organising things for you. 

oglu

UDIMs are much easier to maintain in a feature film environment. Its no fun to select faces and assign 200 or more shaders to a hero asset. And its even more complicated if you have to assign shader overrides to hundreds of assets in a scene.

For games its fine but for film per face assigned shaders arnt used. 

Filip5

Okay guys, this is what I got after trying to use UDIMS inside SP... I wonder if someone could tell me what the issue is...

poopipe

its hard to tell from the screengrab but the since the error messages say there's shells spanning multiple UDIMs I'd say that's what the problem is - might be worth adding a little padding on each tile

Filip5

Icreasing the padding around uv borders did work after all !