Hi!
Last time I was checking with Unreal Engine to work on path tracing, VR. However, the graphics pipeline was DX11-based, and it was not possible until DX12. Recently Unreal Engine progressed a lot in path tracing. Still, I have the same question, is it possible to work with real-time path tracing in VR now? If yes, I would really appreciate it if you could suggest some resources.
Unity3D has pushed up its vr rendering pipeline with dx12 and vulkan. Is there any plan from Unreal Engine about it?
It’s not even possible to work with real-time path tracing in normal viewport, so much less VR.
The Path tracing in Unreal Engine is not a realtime solution, unlike what has been seen in Cyberpunk or Portal RTX.
For a project was interested to evaluate too the feasibility of getting realtime PT working in VR.
Looking at what CD Project has done on Cyberpunk 2077 (based on RED Engine), seems they have used RTXDI.
The case I’m considering it’s an archviz interactive where lights of any kind can be freely moved, changed, the environment can change materials and shape with both natural and artificial light. This need to be seen from a true 8k VR headset.
Among many doubts
- RTXDI can be integrated into UE5
- Will work on multiple GPUs (I doubt even a single 4090/A6000 might be able to achive the needed speed)
- The end users expect a quality similar to off-line path traced renderers like Octane or Corona, I have not the knowledge to judge if this approach can reach this level
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