I can turn on CSM on mobile, but as far as i see, it has only one level (on/off).
While on PC preview i see several levels (green dots, from darken to lighter).
Is it normally for mobile (Android, UE 5.5.3) or i missed some settings?
Hello there @9Evgeny9!
This is an interesting point. Following UE’s official docs on the feature, it should be possible to have multiple levels of CSM rendered in Mobile, by adjusting its value for “Maximum number of CSM cascades to render”:
However, checking around the community, there are multiple threads stating that the engine does not follow through fully with the desired setting, often getting a single shadow level, sometimes two.
The general consensus is that the ammount of levels in-game will be defined by the platform’s performance, and will vary by device, UE version, and mobile limitations.
I suggest playing around with scalability values, and test adjusting shadow distance and resolution. Then, if you are stuck with a single cascade effect, you can tweak how far it extends, so the cutoff looks less abrupt. Hope this helps, and good luck!
In my my further investigation, i found “Cast Modulated Shadows“ in Directional light, and after checking levels of mobile shadows APPEARED
BUT
Happens another problem look at the picture. Strange artifacts when baked and CSM combined.
Hello again!
According to UE’s docs on the CSM feature, combining modulated and baked shadows is not recommender, as they won’t blend together properly:
Shadow Blending: Unlike Dynamic shadows, Modulated shadows can not blend with other shadows, either baked or dynamic, that you see in your project’s. This means that when a Modulated shadow is on top of another shadow, both shadows will show instead of a single shadow that blends together.