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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/FMaterialShaderMapId
Syntax
FGuid BaseMaterialId
Remarks
The base material's StateId. This guid represents all the state of a UMaterial that is not covered by the other members of FMaterialShaderMapId. Any change to the UMaterial that modifies that state (for example, adding an expression) must modify this guid.