Reply To: Why is th UV island normal baking margin calculation by dividing the normal map resolution by 128?

[Jonathan Lampel]

I fairly sure it’s just in the range of good values found by testing and that number is specifically convenient because a lot of common texture sizes are multiples of 128. I’d bet it also helps the result of downsampling to be a bit cleaner. More here: http://wiki.polycount.com/wiki/Edge_padding