Do OBJ Files Contain Textures?

mwokee

Software applications I work with apparently will soon be upgrading to where you can import OBJ files and work with 3D objects. But... do OBJ files contain texture and color information? I'll less excited if this is not the case. Thanks

Leana

They do, but rather basic ones IIRC.

barbult

I didn't think OBJ files had texture information at all. Sometimes they come with a companion mtl file that lists the path to some separate texture files, but those mtl files seldom work for me in Daz Studio. It could be that I just don't know how to use them properly.

Leana

barbult said:

I didn't think OBJ files had texture information at all. Sometimes they come with a companion mtl file that lists the path to some separate texture files, but those mtl files seldom work for me in Daz Studio. It could be that I just don't know how to use them properly.

Ah good point, I was thinking about the mtl file not the obj itself

PerttiA

barbult said:

I didn't think OBJ files had texture information at all. Sometimes they come with a companion mtl file that lists the path to some separate texture files, but those mtl files seldom work for me in Daz Studio. It could be that I just don't know how to use them properly.

The path to the textures inside the MTL file is absolute, and usually doesn't match where one placed them. Once the paths are fixed, the textures are loaded with the model.

WendyLuvsCatz

they can have very highly detailed vertex colours but only some software's see them

it's also dependent on mesh resolution 

fractal exports from Mandelbulber3D have very detailed painting and highpoly, Zbrush, Meshlab and Ultimate Unwrap 3D can see them out of the software I have

I suspect Substance Painter and other software that does 3D painting can too

it's what Zbrush calls polypaint

we a talking about meshes with millions of faces here

they don't need UV mapping or mtl files

Gordig

How well they work will also depend on the render engine, as different engines use different naming conventions for both parameters and maps. 

UncannyValet

so... solution: manually add the textures to obj whenever needed

Ascania

Stupido3D said:

so... solution: manually add the textures to obj whenever needed

No. The solution is to manually set up the textures on the obj once and then save it to the library as a DAZ asset.

UncannyValet

Ascania said:

Stupido3D said:

so... solution: manually add the textures to obj whenever needed

No. The solution is to manually set up the textures on the obj once and then save it to the library as a DAZ asset.

Hmm, I clearly missed the part of OP's post where they said they were talking about Daz Studio...

"Whenever needed" was not me advising the user to repeat busywork anytime they use an obj, but rather i meant that when using new obj for first time, they need to set up textures manually rather than entrust some automatic process to accurately assign textures to shader setup correctly.

Gordig

Stupido3D said:

Ascania said:

Stupido3D said:

so... solution: manually add the textures to obj whenever needed

No. The solution is to manually set up the textures on the obj once and then save it to the library as a DAZ asset.

Hmm, I clearly missed the part of OP's post where they said they were talking about Daz Studio...

The OP didn't specify what programs they're working with, but if the programs are only now adding OBJ import capabilities, they're clearly not talking about DS.

Ascania

UncannyValet said:

Ascania said:

Stupido3D said:

so... solution: manually add the textures to obj whenever needed

No. The solution is to manually set up the textures on the obj once and then save it to the library as a DAZ asset.

Hmm, I clearly missed the part of OP's post where they said they were talking about Daz Studio...

"Whenever needed" was not me advising the user to repeat busywork anytime they use an obj, but rather i meant that when using new obj for first time, they need to set up textures manually rather than entrust some automatic process to accurately assign textures to shader setup correctly.

In non-D|S software the solution is to set up the textures on the obj once and then save it as a native to the program asset.