So then they are using basically this tech, [ame="http://www.youtube.com/watch?v=fAsg_xNzhcQ"]Interactive Indirect Illumination Using Voxel Cone Tracing - YouTube[/ame]
If it's truly dynamic-lighting only, then no, it wouldn't be very scalable to older tech. Some devs might try and make custom builds with their own light baking solutions though.
just saw this lil vid this mornign. pretty awesome: [ame="http://www.youtube.com/watch?v=kr2oHPSJ0m8"]Unreal Engine 4 - »Infiltrator« - Tech-Demo zur UE4 - YouTube[/ame]
Use your head - people are developing tech in-house because third party solutions that already do what a company needs to do now are not available yet. Middleware takes time to develop.
Bah, looks amazing! Hope theres some nice animation tech/features ironed out ;) Now I have to go back to a throwback engine that even UE2 would probably laugh at, sigh.
The samaritan demo was created for gamers and consumers, this is a tech demo created for people that have used udk or similar tools, and can see what the new features are without being in a polished game with art direction context.
I pulled a bunch of the posts here into a PBR thread: http://www.polycount.com/forum/showthread.php?t=124683&page=2 edit: also I've merged in that PBR thread from tech talk as well, thanks artquest.
It is incredible, seriously. I learned a lot from it, since it visualizes a lot of the math concepts I only kinda thought I knew how they worked. Ryan Brucks (tech/environment artist) did a great job putting it together.