UKismetMathLibrary::LinearColor_SetFromSRGB

function Engine Blueprint Since 4.0

#include "Kismet/KismetMathLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintCallable

Description

Converts an 8-bit sRGB FColor into linear-space FLinearColor using the proper sRGB transfer function. Use this when your source color originated in a color picker, asset, or texture that encodes values in sRGB.

Caveats & Gotchas

• The sRGB transfer function is not a simple power-of-2.2 curve — it uses a piecewise formula with a linear segment near zero. Using LinearColor_SetFromPow22 instead will give slightly wrong results for dark colors.
• FColor's byte values are 0–255. Values are divided by 255 and then decoded. There is no range check; malformed FColor inputs with high bytes are technically valid but produce values > 1.0 after decode only if the byte was 255.

Signature

static UE_INL_API void LinearColor_SetFromSRGB(UPARAM(ref) FLinearColor& InOutColor, const FColor& InSRGB)

Parameters

Name	Type	Description	Default
InOutColor	FLinearColor&	The LinearColor variable to write the converted result into.	—
InSRGB	const FColor&	An 8-bit FColor assumed to be in sRGB gamma space (as read from a texture or color picker).	—

Return Type

void

Example

Convert a designer-specified sRGB color to linear for material use C++

FColor DesignerColor = FColor(255, 128, 0, 255); // orange from color picker
FLinearColor LinearOrange;
UKismetMathLibrary::LinearColor_SetFromSRGB(LinearOrange, DesignerColor);
// LinearOrange now holds the correct linear-space equivalent

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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