Ray Tracing, Game Development, 3d Technology, Unreal Engine, Global Illumination.
like Raytracing or Pathtracing is all about ‘how can we create more accurate & realistic images’. We kinda figure out how we can do it. Now, we started to ask ‘How can we do that much faster?’ Before Real-time Lightning technologies, we were baking the light & objects in the scene(We still do).