This solution works in other engines like unity and ue4.
Unity light passing through walls.
By sydon thursday november 2 2017.
This is a quick fix for the light bleed that i was having a while ago.
You have a point light source behind some walls.
Although you have enclosed the light indirect light from the light source seems to seep through especially on the ceiling and the floor.
Create a unity primitive cube plane etc sized similarly to your wall remove its collider and in the mesh.
This solution works in other engines like unity and ue4.
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If either of these don t solve.
Set the point light s baking property to mixed or baked then bake your lighting data using the lighting tab.
You can simulate this in shaders or use raycasts to see if the light is behind a wall.
How to fix indirect lights seeping through walls.
That s why shadows exist.
These options have obvious edge cases that can t be easily resolved.
Light passing through walls 1.