.MTL Files for Obj

Hi monrollitup,

Ask whatever you want and need, of course!

Some files (.msh, FBX) have integrated textures while others (.obj) needs external document to know the associations (.mtl). Those textures will be converted to "materials" for every MESH. Imagine your city has trees, let's say 30 tree meshes, and that that full model contains 200 texture images, but all trees share same texture. It will mean there's 1 material. This is the reason some models may contain a lot of textures but we will use a reduced number (<121) of materials. It also means you can join (CTRL + J) the meshes that share the same materials.

For the MTL, the file shall be named the same as the .OBJ file. Inside the MTL, you may find something like this:

D/Desktop/aaaaaaaaa.png (it means the location of an image file; if the files are missing, the model will look PINK in textures, because it's associated to a texture that is not in that location)

R 0 0 0 (in this case, there's no image file. It is using a color. This one is struggling because for .msh files we need textures. If a model is painted in yellow touching the RGB parameters, you would need to create a texture for that).

So, in case you need to edit something about the MTL file, I guess you should check in Blender each mesh and texture associated to see if its being loaded correctly. Please, send here the model so I can have a look.

Hi monrollitup,

this file do not contain texture images altough it includes the .mtl. You can open it in Notepad and there you will see many parameters such as:

Código:

Ns 10.000
Ni 1.5000
d 1.000
Tr 0.0000

These are supposed to be materials filled by colors. For example, if there's a red mesh, it should be like Red (100%) Green (0%) Blue (0%). It's the same, but with different parameters. In Blender you will see the colors, but after you export there will no colors because The Movies need texture images.

Instead, we need mapping (when the texture is actually an image that is modified to fit well with the mesh), this is an example from your model:

Código:

map_Ka C:\Users\User\Desktop\ASSET STORE\seher\PROJE.fbm\5.jpg

It says there's an image file to be loaded for that mesh. But if we're missing the images, then there's no texture to load.

To conclude, your model has to be with texture images. Sometimes you get models with mtl and no textures, some other times there're textures with no mtl file. When this happens, we usually discard the models if you don't want to go manually texturing 1 by 1, which seems a lot of job. :Good: