Well I haven't tried it, but I know it's possible and while it won't neccessarily look BETTER, (it already looks pretty darn good in my opinion) it will allow you to avoid the issue of the cel shading light position being modified by the orientation of the camera.
So yea cubic will definitely work, and will give "better" results. I dunno when I'll get around to updating my cel shading code to use cubic mapping, but it's pretty trivial.
So yea cubic will definitely work, and will give "better" results. I dunno when I'll get around to updating my cel shading code to use cubic mapping, but it's pretty trivial.