Ray tracing is a form of rendering that mimics a reflection effect to increase realism. To do this, calculate the colour of the pixels by tracing the path the light would take if it travelled from the player's vision to the stage. As it passes through the environment, light can be reflected, cast shadows, pass through transparent objects, etc. In short, this technology aims to simulate how light works in the real world. The result is true-to-life reflections and shading.