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API > API/Runtime > API/Runtime/Engine > API/Runtime/Engine/FEmitter
Description
If the input has no value flowing in (e.g., because the input is disconnected), these DefaultXXX() functions will emit a constant value, bind it to the input, and return it. Note that these functions may return poison if the value flowing into this input was poison in FValueRef DefaultBool(FValueRef Value, bool Default);
| Name | InputDefaultBool |
| Type | function |
| Header File | /Engine/Source/Runtime/Engine/Public/Materials/MaterialIREmitter.h |
| Include Path | #include "Materials/MaterialIREmitter.h" |
| Source | /Engine/Source/Runtime/Engine/Private/Materials/MaterialIREmitter.cpp |
FValueRef InputDefaultBool
(
const FExpressionInput * Input,
bool Default
)