I’ve been playing with VXGI for a while… Right now it’s the best real time GI option for UE4 in terms of visual quality only. is what I can say (based on my experience) about VXGI state right now:
- It is just working nice with Spot Lights
- It has just one bounce, so you can’t get real time reflections of objects receiving only indirect light. You can’t use UE4 default reflection capture since it needs backed light, so you’ll have SSR only and it’s not enough for good results most of the time…
- May be not perfect for some large scenes since there is no control over voxelization and there may be light leaking on distant objects.
- 30fps is average for good results in small scenes like the Realistic Rendering project. And is on my GTX 780, so we are definitely not talking about a technology that can be used on many kinds of projects right now.