OptionaldistanceHow far out to place the virtual sun when projecting it to screen.
Large so it reads as infinitely distant. Default 1e5.
OptionalcolorLinear-RGB tint of the sun core / streak. Default warm white.
OptionalintensityOverall flare strength. Default 1.
Unit vector pointing TOWARD the sun in world space. Required — usually
-light.direction. A function so it can track a moving/animated sun.