My old dayjob was photorealistic architectural renderings. The point is GTAV, which was/is exemplar for game engine graphics, and even current gen RTX game eng

My old dayjob was photorealistic architectural renderings. The point is GTAV, which was/is exemplar for game engine graphics, and even current gen RTX game engine rendering all look "bad" due to constraints and budgets of real time rendering. Bad in the sense that they're necessarily rudimentary - actual photo realism requires many layers of expensive details. This technique fills in many of those kind of details. The improvement in photo realism demonstrated here is significant and a huge leap in terms of image quality.