RenderDragon

Render Dragon is a rendering engine added in 1.13.0

Features
The exact set of features will depend on the device's capabilities. However, it is generally designed to improve performance. Render Dragon makes few graphical changes by default, but drastically improves customizability.

There is a new "ray lighting" option, in which all lighting is based on light sources projecting rays. This allows blocks to cast realistic-looking shadows. However, the world is less visible with ray lighting than with normal lighting. However, it does require an Xbox One S. If you are using Windows 10 you will need an RTX graphics card to use render dragon.