1

I am attempting to emulate what's seen in the image below:

enter image description here

I have an indoor scene that's fully surrounded by walls. The only way in for light is the glass skylight at the top.

enter image description here

When I render the image with an HDRI and without the object representing the top glass, I get very hard shadows correctly aligned to match the concept art.

enter image description here

I'd like to keep the shadows while introducing the glass material, but as soon as I add the glass, the light gets foggy and dark.

enter image description here

These are the settings for the glass material. I've played with the settings but nothing seems to help.

enter image description here

How can I have an object with a material representing the glass while achieving full light transmission and hard shadows?

kettlepot
  • 111
  • 1
  • Without further instruction the principled bsdf will still cast a shadow. Related post here - https://blender.stackexchange.com/questions/213181/is-glass-in-cycles-just-broken-or-am-i-doing-something-wrong/213186#213186 – Allen Simpson Mar 17 '21 at 22:41
  • https://blender.stackexchange.com/questions/2558/how-to-illuminate-the-darkness-inside-glass-objects-in-cycles?r=SearchResults&s=1|54.5726 – Timaroberts Mar 17 '21 at 23:01
  • I'd suggest that you simply avoid using the glass altogether since Cycles struggles with transmission of refracted light. Also, reflections on the glass usually aren't visible from the inside of a building. – HISEROD Mar 17 '21 at 23:07
  • The top two comments seem to work. @HISEROD what would you suggest using instead of the glass shader? – kettlepot Mar 17 '21 at 23:13
  • I would either leave the window frames completely empty or use a shader that transmits light using just the Transparent BSDF like in the first linked answer. – HISEROD Mar 17 '21 at 23:19
  • I recommend using the Glass shader node instead so as to avoid questionable Principled settings, but aside from that, you may be able to use the Ray information node to have only direct rays from the glass be refracted. – TheLabCat Mar 18 '21 at 03:00

0 Answers0