I am trying to make a model with a glass enclosure over a red light, something like you might see on the a robot or on a police car. The end result will be to make the red light shine on and off, but I am having trouble getting the light to shine through the enclosure.
I have a mesh that is glass (materials set for the enclosure to appear like glass) and then have put a hemi light inside the glass and made it a red light. For some reason, when I render the scene the light seems to be trapped inside the glass enclosure.
How can I make the light shine through the glass enclosure mesh and also have a normal light glow to it?