OptionalbaseNumber of base-tint sine cycles down the texture. Independent of
rings; gives a low-frequency warm/cool variation. Default 5.
OptionalcolorWood base colour. Default [0.462, 0.328, 0.210].
OptionalnormalheightToNormal strength. Default 1.8.
OptionalringsNumber of growth-ring cycles down the texture. Default 7.
OptionalroughnessRoughness centre. The output mr modulates +0..+0.18 above
this on grain peaks. Default 0.55.
Options accepted by paintOak.