Ray tracing
In simple terms, ray tracing, as the term suggests, is the process of how the pathways of light (rays) sources are computed (traced) to simulate their behavior on different objects within an environment. So, ray tracing allows the differentiation between lightning and shadow scenarios to be much more efficient while simulating a 3D environment with a graphics engine.
NVIDIA's latest Turing GPUs have introduced this feature with their RTX series of cards, which, when enabled, allow a virtual simulation in modern video games and graphics to become many times more realistic. There are many older technologies being employed through graphics engines such as HairWorks, PhysX, and Tress FX, the last of the three being from AMD. The RTX ...
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