Blender import, UV Maps unreliable

Unity Engine
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1

Firstly hello all (my first post), and many thanks Unity for a stunning piece of kit.

Now to my problem:
I have read nearly everything (I think) of importing from blender. I have been very maticulous with the UV mapping in Blender and I am sure its done right. A few things have been happening though.

  1. I have managed to make a simple block in blender and UV mapped it, pulled it into Unity and it showed perfect.

  2. I have been working on a more complicated scene of an apartment block. Slowly building it, importing it every nw and then to see if it works and all is good. Then I UV mapped one piece of the scene, pulled it in again and woohoo the texture showed. I then went on to UV map the rest, pulled it in and none show.

I have tried to re-apply the materials and images to the items in Unity, some worked some not at all and some displayed wrong.

Basically, are there any tricks involved here? Is there a specific workflow or maybe some do’s and don’t that are not in the general literature?

2

No tricks necessary, I’ve been using Blender with Unity for 3+ years and never experienced any issues with UV mapping. What does the UV map look like in Blender? Are you using multiple UV’s? If you set “viewport shading” to “textured” are your UV mapping and textures correct? Does your UV map disappear or did the texture just turn to a blank color? Did you rename anything in Blender, ie. gave the texture or material a new name?

3

Hi and thanks for the reply bigkahun.

I was and am pretty sure my UV mapping is correct, in fact within the last hour I managed to get it all working perfectly. The problem was… NORMALS.

The model is quite simple and therefore I did not check the normals, they did in fact flip and after fixing it all worked fine.

I did however realise that the best way to get the models into Unity is to do all the blender work with textures and relating files in a seperate folder, then when ready copying it all into the assets main directory, importing or subcategory didn’t work for me. :smile:

4

Yeah, I’ve been “fooled” by flipped normals before, glad you sorted it out.

I typically rough out the design in Blender (.blend)/Gimp (.PNG or .PSD) and then put them in a folder in my Unity Assets folder. Then I double click on the file in Unity to edit them. Works a treat.

BTW, my next door neighbor is from Glasgow. Still wears a kilt and plays the bag pipes for New Years. :slight_smile: