A big texture compare to many small ones

Development Asset Creation
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1

Hello everyone,

I have a question. which one has a better performance?
a- using a 4K texture
b- using 4 x 1k textures

thanks

2

I have asked this before and I will try to give the best explanation. High Res textures take large lightmaps and lets say you use a 4096x4096 image to do something, it is 16 times larger than what a 1024 texture would be. Large building I try to split up into a few parts and use 4096 textures, only because of visuals but If I can get by tiling then I use the smaller ones. It pretty much weighs out the same. Nothing else you can use all big textures and then if you need to get some performance then you can go back and start checking where you can cut back. You can always scale them down and not lose much detail but not scale them up without losing detail.