To those who don't know, interior mapping is a great technique used to create virtual interiors on a material without any physical resemblance.
It can create believable interiors for such buildings as seen throughout the city without creating complex interiors within the mesh and at a reduced draw call.
I've been experimenting with implementing the shader to Unity and so far it's proven to be working, but there's some slight modifications I'd require to do in order to adapt to Bloodlines' building textures, including the re-add of specular and bumpmap support.
For more information about the technique behind this shader, here's the link:
http://interiormapping.oogst3d.net/
