Luoshuang's GPULightmass

Epic has said there will be DXR in UE4 starting in 4.22 by the end of the year. It’s been posted in the forums by staff, and I believe mentioned in the blogs

So far Epic has shown ray tracing for AO, reflections, and shadows. So don’t expect light bouncing anytime soon. The Star Wars demo used baked lighting for example.

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