Description

In previous versions of the engine (4.21), 10 MipMaps are generated with the above repro steps. Starting from 4.22 and CLs above the editor only produces 1 MipMap with the above texture settings.

Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5365847), 4.23 (CL - 5408081)

Steps to Reproduce
  1. Import a texture with the power of two resolution
  2. Set the Compression Setting to User Interface RGBA
  3. Make sure the Mip Gen Settings are set to FromTextureGroup
  4. Change the Texture Group to UI

Expected: Multiple MipMaps are created

Result: There is only one MipMap generated

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-71737 in the post.

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By Design
ComponentUE - Graphics Features
Affects Versions4.224.23
CreatedMar 19, 2019
ResolvedMar 20, 2019
UpdatedNov 4, 2020