This problem was reported in this UDN:
https://udn.unrealengine.com/s/question/0D52L00005PbEYNSA3/landscape-distance-fields-artifacts?fromCase=1
1) Launch QAGame with -dx12
2) Open ProcLandscape_Test.umap
3) Enable Show->Visualize->Global DistanceField
Observe random artifacts. The same are not there with DX11 or Vulkan. A quick look in RenderDoc reveals various horizontal and vertical lines in the source GlobalDistanceField<N> textures to the VisualizeMeshDistanceFieldCS shader. In DX11 these textures appear smooth.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-113387 in the post.
| 0 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 4.26 |
| Target Fix | 5.0 |
| Fix Commit | 17402288 |
|---|
| Created | Apr 13, 2021 |
|---|---|
| Resolved | Oct 6, 2021 |
| Updated | Dec 1, 2021 |