How to make a radial blur post-process material in Unreal Engine 4 (version 4.20.3) using a custom HLSL node and a radial gradient. Topics covered: HLSL, custom nodes, post-processing, material graphs. Thanks to Joubert van Zyl for the request, and special thanks to Tomura for writing the original code in 2015.
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UE4 Forum Post - https://bit.ly/2P3Ndeb
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