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Problem with "blinking" wheels

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So I'm working on this shell oil truck (just a recolor of the default one) and have run into a problem I just can't figure out. The wheels do this weird "blinking" thing, which is mostly visible in the dark. It isn't light as the blinkers or headlights on it, but more like a weird reflection of light. I've got some screenshots of it. I tried taking away the bumps on the wheels with no change, I tried smooth and flat shading (using blender by the way) without any change. It's clearly something that happens as the wheels turn, but I have no idea how to fix this and it's too annoying to live with.

Hoping you guys have some ideas as to what might be the cause here. :)


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  • Original Poster
  • It seems you're right! I only tested with a neutral color on the wheels of the normal map thinking they shouldn't be affected anymore, but a quick test completely without the normal map has no blinking wheels. So it does look like there's something funky with the normal map. Gonna see if I can fix it tomorrow. :)

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    Yes if you extracted the model using mod tools, Weird things happen with normals on the model itself I've found out. That could be a problem as well. Like I extracted a crane before and I would get weird shadows until I reset the normals.

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    Yes if you extracted the model using mod tools, Weird things happen with normals on the model itself I've found out. That could be a problem as well. Like I extracted a crane before and I would get weird shadows until I reset the normals.

    That happens because the normal map and the specular map are combined.

    Red Channel: Normal x

    Green Channel: Normal y

    Blue Channel: Specular

    Just set the blue channel to 255.

      Edited by boformer  

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