Planet shadows don't cast on close-to-camera objects when shadow far below horizon #175
Description
- When objects on the surface of a planet are supposed to be in shadow, but the shadow caster surface is an extreme distance away, the object may be rendered as if it's not in shadow
- This is due to how Virtual Shadow Maps are implemented in Unreal; they have a limitation where extremely far shadow casters do not cast shadows on near objects.
- Back-faces of planet meshes do not yet shadow
- Typically does not have a problem when near an atmosphere-having planet, as there is an extra shadow computation for the planet "surface" sphere.
Version details:
- Unreal engine client program
- v0.45.2 and many previous versions
Resolution:
- We are working on reenabling Raytracing shadows, which do not have this issue
- This will be at least partially addressed for VSM shadows by an update in the future