do explicit vertex normals cost anything?
greentooth
Simple maybe dumb question
Is there any performance cost to using explicit vertex normals?
Is there any performance cost to using explicit vertex normals?
Replies
But if you split a vertex into multiple normals, for example to make a hard edge, that can increase the vertex count of the model, which can cost more memory, which may slow down frame rate. It all depends!
http://wiki.polycount.com/PolygonCount
and
You're making me hard. Making sense of hard edges, uvs, normal maps and vertex counts
Thank you for the answer!