UKismetMaterialLibrary::SetVectorParameterValue

function Engine Blueprint Since unknown

#include "Kismet/KismetMaterialLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintCallable

Description

Sets a vector (color) parameter value on the current world's instance of a Material Parameter Collection.

Caveats & Gotchas

• Logs a warning and does nothing if ParameterName doesn't match a vector parameter defined on the collection.
• Takes an FLinearColor, so values are treated as linear color/vector data, not sRGB — if you're driving a color visually, convert from sRGB first or the result will look washed out or too dark.
• Like SetScalarParameterValue, this is per-world and not replicated — call it on every machine (client and/or server) that needs the updated value.

Signature

static void SetVectorParameterValue(UObject* WorldContextObject, UMaterialParameterCollection* Collection, FName ParameterName, const FLinearColor& ParameterValue)

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 set, as defined on the collection.	—
ParameterValue	const FLinearColor&	New value for the vector parameter.	—

Return Type

void

Example

Drive a fog color parameter from gameplay code C++

UKismetMaterialLibrary::SetVectorParameterValue(this, WeatherCollection, TEXT("FogColor"), FLinearColor(0.4f, 0.45f, 0.5f, 1.0f));

Version History

Introduced in: unknown

Version	Status	Notes
5.6	stable	—

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