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Unreal Engine C++ API Reference > Developer > TextureCompressor > FTextureBuildSettings
Syntax
uint32 LODBias
Remarks
The source texture's final LOD bias (i.e. includes LODGroup based biases). Generally this does not affect the built texture as the mips are stripped during cooking, however for tiling some platforms require knowing the actual texture size that will be created. In this case they need to know the LOD bias to compensate.