The subset of a leaf material's surface the LOD cross-fade drives: read the
authored opacity as a fade base, write base × α, and clone-on-first-use
(materials are cached by props, so an in-place write would fade every layer
sharing the instance). getOpacity is the symmetric companion to
updateOpacity added to the material classes for exactly this.
The subset of a leaf material's surface the LOD cross-fade drives: read the authored opacity as a fade base, write
base × α, and clone-on-first-use (materials are cached by props, so an in-place write would fade every layer sharing the instance).getOpacityis the symmetric companion toupdateOpacityadded to the material classes for exactly this.