byteCoderIn 1999, calculating 3D lighting required doing 1 / sqrt(x) millions of times a second. CPUs back t
In 1999, calculating 3D lighting required doing 1 / sqrt(x) millions of times a second. CPUs back then would completely choke on this math. so the developers of Quake III used this literal black magic code instead. How the hell does 0x5f3759df calculate a square root?👇 https://t.co/sTZ6CALJYO