Global Illumination alternatives

The Deep G-Buffer GI seems like it could be a nice addition, it retains some properties of SSDO, performs very good AO and it’s relatively cheap.

It’s still not a real solution by itself I’m afraid. It’s screen space, and even with all the tricks they used it doesn’t take into account the actual volume of light scattered into the whole scene. All light behind camera is not scattering anything. Which is fine BTW, as a real preactical solution could be to use a coarse volume sampling to get interactions from the areas outside the camera frustum and blend them over with DGBGI when it gets into the view.
Sort of like the reflection system we have right now, where samples from the reflection probes gets blended with SSR.

Still I’d love to see strides in implementing something more elegant, ie. something I don’t have to massage placing proxy probes carefully to integrate a screen space effect. Think about procedural levels for instance. You will not be able to art direct any volume you would need to get lighting info. If you have some corridors, maybe fire behind the corner, you’re not gonna see it. Then it suddenly pops in and scatters, could be a nice effect but still not really realistic. They shomehow solved this using 2 or 3 levels of G-buffers, but the placement is very tight and doesn’t allow much. And still it doesn’t take into account the fire you already passed and it’s now in your back.

Please calm down. After all this is an Epic Feedback forum. If you want to fight take it to another thread.
Pony last made an intelligent statement, that applies to every company in the world: investment cost/time vs return. In his eyes this tech is not really something to invest time on, and the comment he made are pretty legit.
It’s good tech, mind me, so you comments are pretty legit too. It only depends on how much time and resources you have to invest.
If he’s developing something you should be happy instead of bashing him, since that’s going to be distributed at a certain time and everyone could benefit from this. If he doesn’t deliver, well, who cares? you already have the tools to make a beautiful game, and those comes from Epic, not him.

That being said, is there anyone willing to port the released source code of DGBGI to UE?
I’m just an artist with enough technical knowledge, the best i could do is make you a statue in 3d :wink: