i'm trying to get this light effect "neon" but i'm having great difficulty, i have tried all sorts of lights, but the all create bad artifacts, this is my best attempt yet, using a vraylight material, but the light still doesn't spread evenly, any suggestions would be welcome. also i get a wierd error on my vray render log, saying that my floor material's bump is invalid.
"warning: Invalid bump basis (XYZ -1.#QNAN,-1.#QNAN,-1.#QNAN)."
"warning: Texture "Map#13" returned an invalid bump normal (XYZ -1.#QNAN,-1.#QNAN,-1.#QNAN)."