Found that one in GAF.

To resume do you remember the differences between the original UE4 PC and the PS4 version? The lack of Sparse Voxel Octree Global Illumination (SVO-GI)? So Sony showed alternatives to how to do that on PS4.

Insted to do the SVO-GI using heavy CPU processing they combined CPU + GCN (GPU) to create SVC-GI with a similar result.

The source (in German): http://www.pcgameshardware.de/PlayStation-4-Konsolen-220102/Specials/PS4-Inside-1084325/

Video:

Slides:

I'd buy 60 before I bought lighting solutions. That being said, does any of this reduce overhead?

I noted the DirectX 11.2+ (plus) in the slides too.

Another slide.

Yes, confused by this I am.  Does anyone know if they actually got Microsoft to license them DirectX?

It might help unifiy game development, but I think it unlikely it would be the same.

AMD GPUs ware DirectX compatible... there is no way to use GCN without have this support... and Sony games won't use it because the lack in the OS part (you need to have the tech in both sides... the hardware and the OS).

But what I found intresting is that PS4 GPU is 11.2+ compatible... it is more modern than any GPU on nVidia and AMD lineup right now.

To be more specific the latest officially DirectX released for Windows 8 is the DirectX 11.1.

PS4 GPU is already compatible with the next generation of GPU and DirectX on PC.

No they didn't they aren't using an Octree... It's not really the same thing, just call it what it is Sparse voxel cone tracing.

I know part of the .1 is that is DirectX 11.1 is supposed to be really good with stereoscopic images (like 3D).  That version came out last year with Windows 8.

But 11.1, actually, it's already behind.  The DirectX for the Xbox One, and Windows 8.1 has already been released and is DriectX 11.2.  With it's tiled resources it is supposed to be much faster at handling giant images with a trivial amount of RAM. 

http://www.youtube.com/watch?v=-I5TEpAnuEg