What options do I have to get path tracing in my application in UE5?
Currently integration of path tracing requires fairly intensive engine changes, you should be familiar with the rendering subsystem of whatever engine you are using. We currently do not have a custom implementation of path tracing in Unreal Engine 5. However, NVIDIA’s NVRTX branch does feature many elements from the PT SDK used in non path tracing modes, including RTXDI based sampled lighting, SER, NRD and DLSS 3.