The official RTXGI plugin was last updated for UE4.27, and isn’t compatible with UE5.
This RTXGI plugin from “Project Borealis” seems to support UE5, but it’s unofficial and isn’t smooth for our rendering engineers to implement:
https://github.com/ProjectBorealis/RTXGI\-UE\-Plugin
Is there any recent integration support from Epic Games for DDGI? Otherwise is there a better DDGI plugin/workflow that Epic Games (or the community) can suggest?
Steps to Reproduce
Hello, since we decided to focus development effort on Lumen HWRT GI, we’re not looking to revisit/revive DDGI/RTXGI. What is the motivation to use DDGI/RTXGI in your plugin instead of Lumen?
Hi Alex,
Motivations has been market analysis of games that are using Lumen vs. DDGI and the player feedback/popularity these games receive. For example, The Finals and Arc Raiders seem to use DDGI and have both been well received by players, while Borderlands 4 has faced heavy criticism and backlash surrounding performance issues, which I believe uses Lumen?
Are you able to shed some light on perhaps how Borderlands 4 may have misused Unreal Engine render settings and features? I assume Epic Games have done a deep-dive into this, considering Borderlands 4 was a highly anticipated AAA release using your engine?
Hello, thanks for the feedback! We definitely want to offer a range of quality/performance tuning abilities with Lumen. The High scalability level and optimizations in UE 5.6 were largely aimed at providing a good starting point for games wanted to achieve 60hz and we’re working on improving the quality and performance of settings on Medium scalability. I can’t speak to the specifics of Borderlands 4, but do recommend that all developers who started projects before UE 5.6, look at the scalability level changes made in UE 5.6 and at our sample profiles for consoles which include 120hz performance settings.
It’s very likely DDGI will continue to be a good fit for some games but as a general GI solution we intend to focus on Lumen which is already integrated with most other rendering features continue to improve performance and quality for medium and high scalability settings. If you have have a specific GPU budget for GI in mind for a particular scalability level and hardware config that could be useful to determine where Lumen’s costs are going in that scenario (e.g. High scalability 60hz @ 4k X ms for GI)