Realtime Dynamic GI + Reflections + AO + Emissive - AHR

[ryan20fun]

@;515196

So, after months of testing diferent optimization techniques, I finally came up with something good. And by something good I mean that my GTX 970 now does the tracing stage AT LEAST twice as fast.
Will get into details later, but the main difference is that now I came up with a MipMap-ish texture that I use to skip empty spaces. way the number of samples needed is greatly reduced. Depending on the settings, about 10-20 samples are enough now.
In my test scene, tracing is taking the same time as the blur stage (that means that my blur needs a good upgrade now).
For really big grids you may see a negative impact on the voxelization stage, cause building that textures can take time. Working on how to improve that, but keeping the voxel res reasonable it’s usually really fast (about 0.1 ms).

Pretty impressive.

@;515196

I think there are some pictures back in the thread, but here are two just in case

http://i.imgur.com/MtBX8Y5.png

http://i.imgur.com/ywjHMV8.png

GI really makes a difference.

@;515196

Still, I’m quite sure I uploaded it at 1080p.

I watched it in 360p, I prefer not using much bandwidth on videos as I cannot (always) tell if it is going to be useless/unhelpful to me.

@;515196

Yes, I did came up with , that’s why there’s nothing out there . Originally, it was just raymarching the voxel grid, but over time I developed a few modifications and optimizations. Now it’s more complex, with the normal interpolation stage, that allows to recover detail from the blured image, and the new empty space skipping technique (that to my knowledge it’s new, but there’s so many people in the world that you can never know for sure ).
I should make a presentation talking about the inner-workings of AHR, but it had been in the back-burner for a while.

I would be interested in that paper/presentation, Will you link to it here if you get time to do it?

Side question: Do you have trouble compiling from source using VS2015 ?