Right now in my game I need to set the z scale of many game objects to -1. Would it be more efficient to create a copy of the world with the said scales and teleport my player there, than to scale many objects over and over again?
Note: I am asking this because I am trying to create the illusion of walking into a mirror, if that helps you answer this question.
I feel like the scaling itself takes up absolutely nothing. The computer is already multiplying by the scale, even it’s it always 1.
But the things you may have to add to make negative scaling work, will slow you down. For example, I think you’d need to turn off backface culling on any 3D objects.
(if this makes sense, please don’t check as answer. It’s just my best guess. Hopefully someone too good for this question will pounce and tell me how wrong I am. Which will make me feel bad, but help you.)