Thanks, I’m glad you like it!
I am not familiar with OBS shaders, but it might well be possible to integrate my shaders with that. It is not something I would do though, but the code is open source so maybe someone else will.
I do have a standalone image viewer using the shader, and the code to that can be found here https://github.com/mattiasgustavsson/crtview
It might be a useful reference for anyone trying to use it for something else