It might work with older versions. The stencil buffer is in Godot since 4.5 but just the visual effect could be usable in older versions. But I did not test other versions, so I wrote just 4.6
I do definetly need the stencil buffer so id have to at least update to 4.5, but my project is currently on 4.3 so it probably wont cause too many issues. Thanks for the info!
