[Can't] phosphor-trails.cg to GLSL

I would really like to play around with this shader in some of my shader chains, but I use GLSL shaders, so no dice. I’d try to do it myself, but I can’t wrap my head around the conversion.

IIRC, the reason it doesn’t have a GLSL port is because the ‘feedback’ functionality was never implemented for that backend

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Thanks for the reply, so should I close this?

you can just leave it.

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