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.
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Component | UE - Rendering Architecture - Materials |
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Affects Versions | 4.16 |
Target Fix | 4.18 |
Created | Jul 19, 2017 |
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Resolved | Aug 22, 2017 |
Updated | Nov 2, 2021 |