I have a scene with base wall that comes with UE4 starter content and just a static point light and after building lights, the wall doesn’t appear to be as smooth as in stationary light results. there appears to be small block of shadow artifacts on the wall.
Please let me know what I am doing wrong
Thank you
Hi -
You are doing nothing wrong. This is how a static light’s information is applied to the meshes in the engine.
There are two things which can help with the blocky lighting. First increasing the Lightmap resolution of the meshes which are influenced by the Static Light which will help make the pixels smaller on the mesh when the Lightmap is applied so smaller blocky. On the architecture meshes in the engine around 256 + Lightmap resolution mostly eliminates the blockiness of the static lights.
The second thing you want to play around with is the Shadow Bias and Shadow Filter Sharpen on the Light which you will have to test based on your exact situation. On a test setup like in your image, a setting of A 1.0 Shadow Bias would help smooth out the blockiness and combined with the 256 Lightmap resolution and you get something very close to the Stationary Lights dynamic shading.
Thank You
Eric Ketchum
I did change the resolution to both 256 and 512 but still getting those blocky artifacts. Is there a way to reduce it completely.
Hi -
Not completely, but these artifacts are not as noticeable on meshes with normal maps and more detailed diffuse settings. The Plain White Wall Diffuse is probably the worst case scenario for those artifacts. If those are your planned environment pieces I would absolutely use Stationary Lighting over Static.
Thank You
Eric Ketchum
