jit.gl.bfg question

Guillaume's icon

hey everyone,
Do you think is possible to zoom in a specific area with jit.gl.bfg?

I would like to do something a little like this
https://thebookofshaders.com/12/cell.png

Thank you very much, and have a nice day :)

Rob Ramirez's icon

you can get pretty close with the fisheye shader:

Max Patch
Copy patch and select New From Clipboard in Max.

Guillaume's icon

thats a first step indeed it works, thank you very much rob.
Now my goal is to affect the zoom inside the noise but with something more complex than the fisheye, like a black and white texture for instance.