Motion blur

[Ludvearty]

I was searching this function.. thanks ^^
However it's not the effect I'm looking for, unfortunetly :/

This effect's (wich is a simple sanity effect) is like a "retard" blur, witch only printscreen the layer and let this shot keep appearing (the result is kinda gross I think). I'm looking for a way to change a lil bit the corresponding file to get closer to the Penumbra's motion blur effect.

This file is in the \redist\core\shaders\posteffect_image_trail_frag.glsl file (I think)

Thank you to take a look !

Ludvearty