GeForce RTX graphics cards support several new, innovative advanced shading techniques, that enable developers to further improve performance, and do things that were previously impossible.
One of these techniques is NVIDIA Adaptive Shading (NAS), formerly known as Content Adaptive Shading (CAS). This adjusts the rate at which portions of the screen are shaded, meaning the GPU has less work to do, boosting performance.
Factors like spatial and temporal color coherence are measured each frame, and in areas where detail remains unchanged from frame to frame, such as sky boxes and walls, the shading rate can be lowered in successive frames.
Bethesda’s Wolfenstein II: The New Colossus is the first game to implement NAS, debuting the tech in a new patch that’s out now.