When this problem occurs, "MaterialExpression" is null in FMaterialInstanceParameterDetails::GetParameterExpressionDescription.
1.Create NewMaterial and open MaterialEditor.
2.Add MakeFloat3Node ( Add any MaterialFunctionNode ).
3.Add ScalarParameterNode and add comment at "Desc" in DetailTab.
4.Create MaterialInstance from this material, and open MaterialInstance.
5.When show scalar parameter's desc, I see "ParameterValue".
It is not update.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-47417 in the post.
| 0 |
| Component | UE - Rendering Architecture - Materials |
|---|---|
| Affects Versions | 4.16 |
| Target Fix | 4.18 |
| Created | Jul 19, 2017 |
|---|---|
| Resolved | Aug 22, 2017 |
| Updated | Nov 2, 2021 |