UKismetMaterialLibrary::GetVectorParameterValue
#include "Kismet/KismetMaterialLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintCallable
Description
Reads the current value of a vector (FLinearColor) parameter from a Material Parameter Collection instance. Logs a warning and returns black if ParameterName doesn't exist.
Caveats & Gotchas
- • Despite the name, the return type is FLinearColor, not FVector — treat it as an RGBA color, including HDR values outside the 0-1 range.
- • Returns FLinearColor::Black without a visible error if ParameterName is invalid — check the log to confirm the parameter exists on the collection.
- • Values reflect the current world's collection instance, which can differ from the collection asset's authored defaults once SetVectorParameterValue has been called at runtime.
Signature
static ENGINE_API FLinearColor GetVectorParameterValue(UObject* WorldContextObject, UMaterialParameterCollection* Collection, FName ParameterName);Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| WorldContextObject | UObject* | World context used to resolve the current world's collection instance. | — |
| Collection | UMaterialParameterCollection* | The Material Parameter Collection asset containing the vector parameter. | — |
| ParameterName | FName | Name of the vector parameter to read, as defined on the collection. | — |
Return Type
FLinearColor Example
Read back an MPC color parameter C++
const FLinearColor FogColor = UKismetMaterialLibrary::GetVectorParameterValue(this, WeatherCollection, TEXT("FogColor"));See Also
Tags
Version History
Introduced in: unknown
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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