gonna bump this. this is a key feature for me. I just need it for the 3d models not really statics. I use unreal, are you sure it's not possible in real time? it seems like it would be based off of stuff like samurai and metal bringer from playism. I really need this feature because I plan to have a free camera and cant really use sprite sheets in the normal way. I use unreal but if push comes to shove I can move to godot, but I am hoping for this exact kind of shader support even if it's not actual support (as in, maybe i have to port over the shaders myself. or implement your view port system within unreal diy. but the shader itself, particularly the way it handles edges, is vital.
here are the trailers for metal bringer