how to fix all textures not marked as normal map

Unity Engine
1

Hi all,

Well I appear to have upgraded a massive project from Unity 2 to 3 during the time that Unity wasn’t correctly marking textures as normal maps, and as a result have literally hundreds of textures with the “This texture is not marked as a normal map” warning and the “Fix Now” button. Is there a way to fix all these textures automatically without having to search through every object in every scene?

Thank in advance

2

I imagine an editor script could be written to do it. I’m kinda surprised one doesn’t exist actually, or maybe it does. Perhaps on the wiki, or in a forum thread? Seems there should be one somewhere.

3

I can’t find one and don’t have any experience coding Editor stuff. Any guru out there feel like a challenge? Anyone from Unity have any thoughts given that it was a Unity bug that caused this problem in the first place?

Thanks

4

I’d really like to know this myself as well.

There is this class here:

but it’s an editor class, which means you can’t put it’s scripts onto objects in the hiearchy and run them, so I don’t understand how you would get functions in that class to operate on things in the project pane

5

I could be wrong but I don’t think that is capable of fixing this issue. I’ve selected “Reimport All” from the assets menu so I’m hoping that will fix it - will find out when I get back to work tomorrow and will post the result on here.

cheers

6

I’m guessing http://unity3d.com/support/documentation/ScriptReference/TextureImporter-normalmap.html is what you want, from the list eem posted above. Followed by http://unity3d.com/support/documentation/ScriptReference/TextureImporterType.html and finally http://unity3d.com/support/documentation/ScriptReference/TextureImporterType.Bump.html

7

sorry but I don’t see how these can be used to fix the issue in my original post. Can you provide some more detail please?

8

Write something to go through various textures, perhaps all those in a specific directory or using a specific prefix or something

Create some kind of loop that checks each texture, the first link TextureImporter.normalmap, is it a normal map? true or false, if it is, move on to the next, if it isn’t, then run the third link, TextureImporterType.Bump (or TextureImporterType.Advanced) to convert said image into a normal map, then move onto the next.

I’m not writing it for you, because I’m not a coder, so I can’t. But that would be the general method you’d probably want to use to do it.

9

ok I’ll see how the reimport goes and if I don’t have any joy I’ll give that a shot.

Thanks for the help

10

FYI reimporting all the assets didn’t fix the problem.

11

After chatting to Unity support they said that reimporting the materials should popup a dialog box asking if I wanted to fix the incorrect normal maps. Didn’t work the first time but did the second.