Whenever I have problems with normal maps, I take a look at some of these links and the problems go away. They’re all from polycount, and I think it’s awesome that they’re available for free. If you profit from this stuff please consider supporting polycount over at Patreon, even with only a small amount: Polycount Patreon.

Cover Image is by “Earthquake” from Polycount

You’re making me hard. Making sense of hard edges, uvs, normal maps and vertex counts

Understanding averaged normals and ray projection/Who put waviness in my normal map?

Skew you buddy! Making sense of skewed normal map details.

Polycount: Normal Maps

Normal Map Modeling

Of Bit Depths, Banding and Normal Maps