Tessellation is not working on landscapes, but it does works fine on static meshes. This is a regression from 4.23.1 (CL-9631420) where the tessellation was visible with this setup.

This was tested and reported in 4.24 (CL-10570792) and reproduced in 4.25 (CL-10773962)

Steps to Reproduce
  1. Open the UE4 Editor and create a Blank project
  2. Create a Material with the setup in the screenshot (Constant3Vector, TextureSample, and a Constant. Flat Tessellation needs to be set on the Material.
  3. Create a Landscape and apply the material
  4. In the Viewport change the Lighting to Wireframe from Lit

Results: The landscape is not showing the tessellation in wireframe mode.

Expected: Landscape should show the tessellation and displacement

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ComponentUE - LD & Modeling - Terrain - Landscape
Affects Versions4.244.25
Target Fix4.24.2
Fix Commit10801000
Main Commit11123615
Release Commit10814483
CreatedDec 17, 2019
ResolvedDec 18, 2019
UpdatedJan 26, 2021