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> Unreal Engine API Reference > Runtime > Engine > FLightMap2D > FLightMap2D::AllocateLightMap

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FLightMap2D::AllocateLightMap

Allocates texture space for the light-map and stores the light-map's raw data for deferred encoding.

Windows

MacOS

Linux

References

Module	Engine
Header	/Engine/Source/Runtime/Engine/Public/LightMap.h
Include	#include "LightMap.h"
Source	/Engine/Source/Runtime/Engine/Private/LightMap.cpp

Syntax

static TRefCountPtr< FLightMap2D > AllocateLightMap
(
    UObject * LightMapOuter,
    FQuantizedLightmapData *& SourceQuantizedData,
    const TMap< ULightComponent *, FShadowMapData2D * > & SourceShadowMapData,
    const FBoxSphereBounds & Bounds,
    ELightMapPaddingType InPaddingType,
    ELightMapFlags InLightmapFlags
)

Remarks

Allocates texture space for the light-map and stores the light-map's raw data for deferred encoding. If the light-map has no lights in it, it will return NULL. SourceQuantizedData will be deleted by this function.

Parameters

Parameter	Description
LightMapOuter	The package to create the light-map and textures in.
SourceQuantizedData	If the data is already quantized, the values will be in here, and not in RawData.
SourceShadowMapData	Shadow map data to be combined into the lightmap atlas, used when creating VT lightmaps
Bounds	The bounds of the primitive the light-map will be rendered on. Used as a hint to pack light-maps on nearby primitives in the same texture.
InPaddingType	the method for padding the lightmap.
LightmapFlags	flags that determine how the lightmap is stored (e.g. streamed or not)

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