Question Mip Stripping use case?

Can someone help me understand why Mip Stripping was introduced in recent Unity versions?

I am talking about this : https://docs.unity3d.com/2020.2/Documentation/ScriptReference/PlayerSettings-mipStripping.html

Which says "When enabled, strips unused mipmaps at build time."

Fair enough. Sounds good, but what is an unused mip? An actual unused mip is a mip that never shows in my game, because the camera never goes far enough from it, which isn't something that Unity can know at build time. So what are the criteria?

Huh?

Quality Settings...

Does anyone even use that any more?

So in my case, where I only have one Quality level with Full Res, enabling mip stripping, would effectively kill mips for all textures?

And that's good because...???

What's the use case here?

 

I don't think that's what the documentation tries to convey. I believe it works like this...

Lets assume the texture in question is 1024x1024.

If you set "Texture Quality = Full Res", Mip Stripping will not remove anything and that texture stays at 1024x1024.

If you set "Texture Quality = Half Res", Mip Stripping will get rid of mip 0 only. That is the 1024 mip, so the 1024x1024 texture becomes 512x512 instead.

If you set "Texture Quality = Quarter Res", Mip Stripping will get rid of mip 0 (1024) and mip 1 (512). So the 1024x1024 texture becomes 256x256 instead.

If you set "Texture Quality = Eights Res", Mip Stripping will get rid of mip 0 (1024), mip 1 (512) and mip2 (256). So the 1024x1024 texture becomes 128x128 instead.

Reduce download size and required space on disk.

 

Really? I am not getting that at ALL from the documentation. Not saying you're wrong, but if that's what it does, docs are not clear at all.

 

Isn't that the same as just going into the texture and setting a different resolution size for each platform?

 

Does it also work with Asset Bundles ?

Edit : For anyone looking for an answer it's works with Scriptable Build Pipeline