Almost every person who has at least once used Photoshop has seen that created or changed images are rendered at the final stage. Rendering is a process when data is taken in by a computer or software and processed to get an image or video. When you add changes to any image adjusting colors, textures, lighting and any other features you have to complete a number of commands including image rendering to get a final look. It is a time-consuming and painstaking process especially if to speak about creating visual effects in movies and video games. But today the technological progress has made all these processes almost instant and we can say about real-time rendering.