three3d/extras/pmrem_generator
library
Properties
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getter/setter pair
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lodMin
↔ int
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This class generates a Prefiltered, Mipmapped Radiance Environment Map
(PMREM) from a cubeMap environment texture. This allows different levels of
blur to be quickly accessed based on material roughness. It is packed into a
special CubeUV format that allows us to perform custom interpolation so that
we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
chain, it only goes down to the LOD_MIN level (above), and then creates extra
even more filtered 'mips' at the same LOD_MIN resolution, associated with
higher roughness levels. In this way we maintain resolution to smoothly
interpolate diffuse lighting while limiting sampling computation.
getter/setter pair
