Light through the windows

Hi everyone!
I´ve just almost finished my project, but I have one problem. How can I make a material which allows to me cast light through the windows without make a holes to walls?
Maybe noob question, but Im just beginner. :)
Thanks for help

Michal

  • Jonathan Lampel replied

    Hey! If you make the mesh you'd like to become the windows a separate object you can uncheck Shadow in the object's visibility properties: 

    If it must be a material, you can do something like this so that it's only visible to the camera: