you can find a working demo repository here: https://github.com/sphynx-owner/JFA_driven_motion_blur_demo
for a better overview of the subject here's a video I made on it: https://youtu.be/m_KvYlYF3sA and heres a paper I wrote on it: Using.the.Jump.Flood.Algorithm.to.Dilate.Velocity.Maps.in.the.application.of.Believable.High.Range.High.Fidelity.Motion.Blur.7_7_24.2.-.Google.Docs.pdf