Does "Always Include Tangents" rebuilds Normals?

Cesium for Unreal
1

Dear forum,

I am working with a small terrain that includes the octvertexnormals extension specified here.

image
image945×731 76.7 KB

While the Normals in the upper version look smoother, the “Always Include Tangents” option leeds to discontinuities in between faces with booth versions of the terrain.

  • Does the the “Always Include Tangents” option rebuilds the Normals - essentially removing the need of including octvertexnormals on Unreal while using the option?
  • Is there another way to get continuous Normals with Tangents?
2

Fixed by using a terrain

  • with baked octvertexnormal,
  • “always generate tangent” not enabled and
  • the small edit in the terrain material mentioned here.