What is Dot3?

[L B]

I noticed the editor automatically looks for Dot3 extensions on terrain textures.

Opening the dot3 DDSes, I was rather puzzled, they don't look like normals to me but apparently behave like some (or am I wrong?)

 

I have normals for textures, but I don't know how to make them in Dot3. When I use normals for Dot3, I get an overly shiny terrain.

Is there a way of using bump maps like we could in 2.2X?

[Niosop]

dot3 is just a naming convention. They should be standard tangent space normals. Are you using a specular shader? If so, it uses the alpha channel of the normalmap as the specular map I think. So you might want to go in and tone down the alpha because it's probably set to a solid 255.

[Marleys Ghost]

I noticed the editor automatically looks for Dot3 extensions on terrain textures.

Opening the dot3 DDSes, I was rather puzzled, they don't look like normals to me but apparently behave like some (or am I wrong?)

 

I have normals for textures, but I don't know how to make them in Dot3. When I use normals for Dot3, I get an overly shiny terrain.

Is there a way of using bump maps like we could in 2.2X?

 

 

I think the alpha channel of the bumpmap/normal/dot3 acts as a specular map.