Custom 2D filters in rendering?

Hello. I’ve learned a bit of GLSL and while normally I make 2D filters for the game engine, I also have renders to make, so I was wondering if there was a way in the compositing nodes to use custom 2D filters… Thanks!

Wow cool I have no idea. But pynodes are supposed to be around the corner, perhaps GLSL is exposed there? Would be awesome to have faster effects in Compositor. Why not ask a dev? Or a power user like Bartek?