Unreal Engine 4

[Zema Bus]

The Imagination Engine: Why Next-Gen Videogames Will Rock Your World
By Stu Horvath May 17, 2012 6:30 am

As early as last March, Epic was making the case for more power with a demo screened at the 2011 GDC. Called Samaritan and built in Unreal Engine 3 with a new set of specialized plug-ins, the video showcased the rendering power of current high-end hardware, displaying an impressive array of effects, like realistic clothing, lifelike lighting, and highly detailed facial expressions. It took three high-end graphics cards to handle the demand, but it grabbed people’s attention. “We used it as an opportunity to make a point to the developers,” Sweeney says. “‘We want 10 times more power; here’s what we can do with it.’”

And that was merely for a souped-up version of Unreal 3. For Unreal 4, yet another quantum leap in hardware has to happen. Creating a game that operates on a level of fidelity comparable to human vision, Sweeney says, will require hardware at least 2,000 times as powerful as today’s highest-end graphics processors. That kind of super-hi-def experience may be only two or three console generations away, but it hinges on manufacturers moving toward the power levels Sweeney is looking for today. He needs the next generation of consoles to be good.

In the past, game developers employed a trick known as staged lighting to give the impression that light in a game was behaving as it would in the real world. That meant a lot of pre-rendering—programming hundreds of light sources into an environment that would then be turned on or off depending on in-game events. If a building collapsed in a given scene, all the light effects that had been employed to make it look like a real interior would remain in place over empty space. Shadows would remain in the absence of structure; glares that once resulted from sunlight glinting off windows would remain floating in midair. To avoid this, designers programmed the light to look realistic in any of that scene’s possible situations—one situation at a time. “You would have to manually sculpt the lighting in every section of every level,” Bleszinski says. “The number of man-years that required was astounding.” UE4 introduces dynamic lighting, which behaves in response to its own inherent properties rather than a set of preprogrammed effects. In other words, no more faking it. Every light in a scene bounces off every surface, creating accurate reflections. Colors mix, translucent materials glow, and objects viewed through water refract. And it’s all being handled on the fly, as it happens. That’s not realistic—that’s real.

Read the whole article at Wired.com.

No word about Unreal Tournament 4 though. Kind of sad that the article focused on consoles.