[Help] Textures & artifacts

[Dubai Skyscraper 129]

A question for the texture experts among us: Can anyone explain how to avoid artifacts? I've noticed them on all of my models and usually they aren't a big deal, sometimes you can't see them at all. But one of my latest ones is very dark so the white artificals are clearly visible.

They are a serious problem when the texture is being downsampled:

 

[Cool_Z 1,547]

You must make the texture a bit larger than the uvmapped part, it should solve the problem. The game engine is... "not very precise" 

[Dubai Skyscraper 129]

Makes sense... I'll try it. More texture space wasted  

[Cool_Z 1,547]

Yes that's a problem when you try to uvmap as close as possible. But you don't need to add much, maybe just a pixel is enough

[Dubai Skyscraper 129]

Right, but since it's the most outer row of pixels (does that make sense)? It has the longest perimeter and therefor takes up lots of space in relation to the mapped face. Not a big deal for large faces, but if you have a large amount of small faces in your model...

oh well. Somehow I'll deal with it.