Realtime GI will be deprecated, what's the alternative?

Unity Engine
1

I’m making a game with realtime lightning, but there’s message popup that realtime GI will be deprecated with Enlighten. I’m not sure if I will finish my game before deprecation date, so what alternative do I have?

2

See Enlighten deprecation and replacement solution :

  • The 2020 LTS will be the last version to contain Enlighten functionality for the built-in renderer, and it is fully removed in 2021.1.
  • Projects authored with HDRP Enlighten functionality will continue to be supported as it currently exists today (as-is, with no new platform support) in 2019 LTS, with full removal of Enlighten functionality from HDRP in 2020.1.

That means:

  • If you want to use Enlighten via the built-in renderer right now, use versions up to 2020.1.
  • For the HDRP, your only option is to use versions up to 2019 LTS (2019.4).
3

Thanks for the reply!
So if I understand it right, Unity will not remove Enlighten from previous versions?

4

Yeah, it just won’t be included in future Unity versions.

As for alternatives, Unity will bring stable Ray-Traced Global Illumination to the HDRP in 2021.1 - with Screen-Space Global Illumination (SSGI) as a fallback for non-RTX developers/gamers (see here).

You can try out Ray Tracing in Unity 2019.3 and higher already - it’s in Preview:
https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@10.0/manual/Ray-Tracing-Getting-Started.html

1 Like
5

To be honest, there is no alternative.