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Question by WillGFR · Sep 07, 2013 at 03:47 PM · mobilenormalmap

Normal Maps Import problem on Mobile App

Hello everyone,

I want to create a mobile game. I have imported in Unity my mesh and its textures (diffuse map and normal map). The textures are 2048x2048 .png files and I use the "Mobile/Bumped Diffuse" shader on my material.

Everything was fine until I compiled my Android application. After the compilation, my imported normal map suddenly was terribly distorted, as you can see on the following picture (on the left, the .png normal map ; on the right, the imported normal map in Unity) :

alt text

Now, even if I try to import it again from scratch, the same distorsions appear on my normal map. Do you know why and how I can fix that ?

Thank you very much for your help !

normal map issue.jpg (7.6 kB)
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Answer by WillGFR · Sep 08, 2013 at 12:44 PM

I found the solution. It was the compression of the normal map (by default RGBA 16bits ; I changed it to RGB 32 bits) that caused the problem.

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Answer by meat5000 · Sep 07, 2013 at 03:49 PM

Click it in editor. In inspector set Aniso to 0 and format to True Colour making sure that it is set to be a normal map.

See if that makes a difference. You may need to re-import it for this to work.

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avatar image WillGFR · Sep 07, 2013 at 04:55 PM 0
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I tried to re-import, with Aniso to 0, and still doesn't work. Of course, it sets to be a normal map.

But what bothers me is that it worked perfectly before compiling to Android. Is it possible that the compilation changed some settings, putting Unity in an "Android configuration", and messing with the import of normal maps ??

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