I modeled my room using an Add-on called Archimesh to make more easily windows doors and so on when I finally modeled the room and rendered it I faced 2 problems which are:

  1. I added a sunlight that passes through the window of the room there is light in the room however it is really dim and the glass material of the WINDOW is not transparent I watched how BlenderGuru made the material for the glass and mine still is solid despite the fact that light is coming through the room.

  2. The next problem is rendering I used the Cycles render engine to render the room and got a really grainy image in the sampler I tried increasing the render value to 1000 still looks like crap.

Render of my room

enter image description here


marked as duplicate by cegaton cycles Jun 17 at 13:00

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.