i have a small test scene. outside a hdri. two windows. I created two portals for the two windows. So two areas lights and the hook on at portals. However, I see no difference in the result (with or without area light/portals). Also, there is no difference in the render time. the portals fill the complete windows and they point inwards.
here with portals on:
here with portals off:
without it is even better?!?!
I’m sure I’m doing something wrong. but what?
iam also missing refraction and reflaction for the multipass/layer compositing. i do not know blender 2.79 or younger but i know there is this passes. i didnt find it in 2.8 yet ?!
any ideas what i am doing wrong?
I am looking forward to your answers. thank you!