Object depth sorting optimised

Hi there, I've made a few optimizations for render. One of the main issues was depth sorting for objects, each ray in the render pipeline tries to do the sort of each part of the object in rays, but now it pre-calculates once before rendering all the rays of the ray cast pipeline. Two versions were added to compare performance, one with light shading, and a second with disabled lights. Try it. Waiting for your feedback.