Step #4 in the I Heart Vanilla: Director's Cut list
This is a modern, pluginless replacement of the old Windows Glow mods with many more features besides! Windows Glow suffered from every mod needing a patch to work with it. Glow in the Dahrk handles this automatically through the meshes themselves with a powerful code by NullCascade which can switch the visible portion of meshes on the fly.
C:\games\OpenMWMods\Architecture\GlowintheDahrk\00 Core C:\games\OpenMWMods\Architecture\GlowintheDahrk\01 Hi Res Window Texture Replacer C:\games\OpenMWMods\Architecture\GlowintheDahrk\02 Interior Sunrays C:\games\OpenMWMods\Architecture\GlowintheDahrk\03 Nord Glass Windows Interior Sunrays C:\games\OpenMWMods\Architecture\GlowintheDahrk\04 Telvanni Dormers on Vvardenfell C:\games\OpenMWMods\Architecture\GlowintheDahrk\05 Raven Rock Glass Windows Interior Sunrays