“The interesting thing is a lot of times artists are having to make those super high-poly models anyways, they just have to take an extra step and build the low-poly model, put a lot of time and care into that and then bake all the high-quality details into a normal map,” says Epic Games VP of engineering Nick Penwarden. While movie-level visuals are often higher-quality, video game assets are lower-resolution and are buoyed by development tricks to make them seem more realistic. “Epic is quick to point out the quality of the assets used for the demo, which they say are film-quality assets as opposed to the ones typically used for video games. You’re lucky if you can change the state of a game and come back and it’s actually changed. You know, things don’t change, there’s not a lot of cause and effect. “If you notice, most video games today are pretty static environments. When a light source changes, it’s not multiple tricks to simulate a flashing light, but real-time processing power at work. When rocks crumble, it’s not a pre-rendered cutscene but a high-resolution rock asset moving in real-time based on the player’s actions.

The Lumens and Nanite demo showcase multiple instances where changes in the environment happen in real-time, and Unreal Engine 5 is capable of rendering these changes immediately. While games this generation and older are detailed and realistic, they’re also static. The goal, according to Kim Libreri, is to make game worlds as immersive and realistic as modern movies, but where that goal differs from previous game generations is how interactive that realism is.

are not just order-of-magnitude leaps in visual quality but they’re also greatly simplifying technologies for the artists who build content,” says Sweeney. 20 Images Epic Games founder and CEO Tim Sweeney explained Unreal Engine 5 is meant “to do things that are absolutely not possible today.” This means offering new levels of photorealism and visuality but also offer these tools in a way that increases the productivity and efficiency of game developers.

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