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> Unreal Engine API Reference > Runtime > Engine > Kismet > UImportanceSamplingLibrary > UImportanceSamplingLibrary::ImportanceSample

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UImportanceSamplingLibrary::ImportanceSample

Distribute sample points proportional to Texture2D luminance.

Windows

MacOS

Linux

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Classes/Kismet/ImportanceSamplingLibrary.h
Include	#include "Kismet/ImportanceSamplingLibrary.h"
Source	/Engine/Source/Runtime/Engine/Private/Kismet/ImportanceSamplingLibrary.cpp

Syntax

static void ImportanceSample
(
    const FImportanceTexture & Texture,
    const FVector2D & Rand,
    int Samples,
    float Intensity,
    FVector2D & SamplePosition,
    FLinearColor & SampleColor,
    float & SampleIntensity,
    float & SampleSize
)

Remarks

Distribute sample points proportional to Texture2D luminance.

Parameters

Parameter	Description
Rand	Random 2D point with components evenly distributed between 0 and 1
Samples	Total number of samples that will be used
Intensity	Total intensity for light SamplePosition - Importance sampled 2D output texture coordinate (0-1) SampleColor - Representative color near Position from MIP level for SampleSize SampleIntensity - Intensity of individual points, scaled by probability and number of samples SampleSize - Local density of points near Position (scaled for 1x1 texture space)

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