I've been trying to conjure my own shader out of the snippets from the internet that does the vertex snapping for the entire screen, but turns out - fullscreen vertex position node is grayed out so it doesn't do anything. Plus this shader makes everything bit blurry for some odd reason.
Is it possible to create vertex snapping shader as a full screen post-processing effect? I want it to be an optional effect that players can turn on and off and I also want to preserve the materials I've already applied to objects.