What is the optimal way to make edges for buildings in gamedev?

rocketjump4d · Jul 2020

Hello guys,
It's a part of a building that I'm making.

How to make these jagged corners (yellow arrows) and this dirt (red)?

I guess, I can make dirt using decals. But what to do with corners?

AFAIK using normal maps for big constructions is bad practice. So I may bevel them and adjust vertex normal. Something like this

Image: https://us.v-cdn.net/5021068/uploads/editor/ld/88qslloxy0e2.jpg

Cons of this method
- extra geometry
- corners are perfect (not jagged)

Are there any ways? And how to make corners not so perfect?

Ghogiel · Jul 2020

Dirt could be done with a decal sheet or blend shader that uses some type of mask(s) or vert colors.

The edges probably could be tackled with a trim sheet. I think yoiu could get that painterly surface imperfection on the edges that way easily and not have to mess with beveling every edge and vert normals.

http://twvideo01.ubm-us.net/o1/vault/gdc2015/presentations/Olsen_Morten_TheUltimateTrim.pdf

Amiminoru · Jul 2020

Edge Decals

https://www.artstation.com/artwork/l3wwa

rocketjump4d · Jul 2020

Awesome! That's what I need. Thank you, buddies

What is the optimal way to make edges for buildings in gamedev?

Replies