Directional lighting issue on an imported model.

Unity Engine
1

I’m using one directional light to light my scene full of low poly models for an iOS/Android game. I’m getting this kind of effect on my buildings:

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As you can see on the side of that building there is a huge difference in lighting (i’m guessing it’s due to the roof and the direction of the directional light). Is there any way to prevent this? I’m using Blender to build models. I’ve tried different shaders and they all seem to have the same problem (except unlit - I would prefer to have lighting effects on my buildings). If there isn’t any way around this, I will most likely just use the unlit shader.

I could also use multiple directional lights, but that would increase the number of draw calls - since i’m building this for iOS/Android, i’m trying to keep the number of draw calls to a minimum.

2

Looks like your vert normals (what would be Smooth or Edge Shading in Max/Maya) are at too high an angle and it’s smoothing the lighting to all faces.

In the Import options, under Normals Tangents, try setting Normals to “Calculate”, and use < 90° for Smoothing Angle (the default of 60 should be fine).

3

Thanks Pix10! - that did the trick!