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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/UMaterialExpressionRerouteBase
Description
Trace through the graph to find the first non Reroute node connected to this input. If there is a loop for some reason, we will bail out and return nullptr.
| Name | TraceInputsToRealExpression |
| Type | function |
| Header File | /Engine/Source/Runtime/Engine/Public/Materials/MaterialExpressionRerouteBase.h |
| Include Path | #include "Materials/MaterialExpressionRerouteBase.h" |
| Source | /Engine/Source/Runtime/Engine/Private/Materials/MaterialExpressions.cpp |
UMaterialExpression * TraceInputsToRealExpression
(
int32 & OutputIndex
) const
The final traced material expression.
Parameters
| Name | Remarks |
|---|---|
| OutputIndex | The output index of the connection that was traced back. |