When moving around my little test level I get some weird flickering. After some testing I figured out that this was the geometry not beeing rendered properly. You can see the issue in the two pictures I have included. The one marked with red is showing the problem when moving. The other picture is showing the same place with when standing still.
I am new to the engine and game making in general and I have no clue what is causing and therefore don’t know what can be done to fix it. Anyone seen anything like this? Help would be greatly appreciated.
This is caused by Occlusion/Visibility culling. It’s expected since the hardware occlusion query that checks the actors in the scene is compiled into a list and sent to the GPU and read back one frame later.
Here are some resources posted on the AnswerHub, Forums, and elsewhere that can help you understand how to work with this and get better culling effectiveness for your scene.
Hopefully this helps you get started with understanding Visibility and Occlusion culling in UE4. There is documentation in the works currently for this being updated along with Cull Distance Volumes and Precomputed Visibility Volumes which help with culling effectiveness.
