r.RayTracing.Shadows.EnableTwoSidedGeometry
VarUnreal Engine Var console variable.
rRayTracingShadowsEnableTwoSidedGeometry
Description
Enables two-sided geometry when tracing shadow rays (default = 1)
Usage
r.RayTracing.Shadows.EnableTwoSidedGeometry [value]Set via the console (~) or in DefaultEngine.ini / DefaultGame.ini.

