Interior Mapping Shader based on a cross-layout-cubemap as an alternative to the UE`s native Interior Mapping Shader based on a lon-lat-layout-cubemap texture.

Simple material that fakes an interior behind windows.

Video showcasing the effect and textures:

https://www.youtube.com/watch?v=Y55j2MzbDOw

Naming convention and setup adjusted to work with textures from WParallax (https://wparallax.com/).

Based on the OSL-shader from Julius Ihle (https://julius-ihle.de) and extended with additional features.