Unreal Engine 4.23 Preview

[Tim_Hobson]

@Leo_Rakes

Now it seems that the rendering part of 4.23 has become very bad, especially ray tracing.

Until the latest 4.23 Preview 3, RTGI was damaged, RT translucency was completely disabled, SSGI could not be combined with RT effect, LPV could not be combined with RT effect, which led to the only available GI effect under RT Shadow was RTGI, but its performance was so bad. Many parts of ray tracing look terrible, even worse than 4.22.3.

The only consolation is that we have seen support for these categories of HISM and Landscape, but we still don’t know when these rendering problems will be solved.

If you’ve not already, please report any issues you find that have regressed or are “bugged” from intended or expected behavior so they can be properly investigated and reported where possible.

As for LPV and SSGI, these are both experimental and unsupported features. SSGI is not yet ready for production and is not a feature we’re focused on marketing or calling out for the 4.23 life-cycle. It’s expected to be ready for 4.24, so expect to run into issues and incompatibility with other features.

For LPV, this is not an actively developed feature and any regressions are expected since we’ve been doing a lot of changes in rendering lately. These may or may not be resolved in a future release. It’s not a feature being actively developed by our Rendering teams.