While investigating how to improve lighting in one of our scenes we noticed that the static directional lighting is behaving in a way we didn’t expect.
There is a little hot spot on movable objects which appears opposite to the directional light forward vector.
In this screenshot, the large spheres are meshes and the small spheres are the volumetric lightmap visualization.
The mesh on the left is Static. The mesh on the right is Moveable.
The directional light is Static, and the lighting has been baked
The hotspot appears to be baked into the Volumetric Lightmap as you can see it on the small debug spheres.
I have attached the sample project I took this screenshot from [here]
Changing the Directional Light to ‘Stationary’ removes this little hotspot. But we would prefer to use Static lights for everything.
My question is - is this behavior normal? Is it something which can be fixed?