The "downgrade" in GTA 6's new footage is mostly simulated air. Rockstar moved to ray-traced global illumination running on a $499 console from 2020, and the first casualty of physically accurate light is the postcard look of the old trailer. Jump out of a plane over the real Miami and the skyline sits behind haze. Water vapor and aerosols scatter sunlight before it reaches your eye, so distant buildings lose contrast and colors wash toward blue-gray. Photographers call it aerial perspective.…