GPU Ray Tracing Performance Comparisons [2021] *spawn*

Captured from different, resized YT videos:

 

DLSS

 

Do you have a supporting link it's DLSS? It looks more artistic on part of the developers.

 

He just told you he took the screens from a compressed resized YouTube video.

In the meantime, the developer of Chernobylite is showing some noticeable improvements from RT GI.

 

Not sure where to put this.

New Research paper from Nvidia that shows AI accelerated ray tracing

Source:
https://research.nvidia.com/publication/2020-11_neural-control-variates
Youtube video:


Extremely smart

 

3080Ti is 50% faster than 6900XT in Chernobylite at 2K and 4K resolutions. The 2080Ti is providing slightly faster performance too.

https://gamegpu.com/action-/-fps-/-tps/chernobylite-test-rt

 

Neural Radiance Caching has the similar approach but adapted for fully dynamic scenes using realtime self training.
It still not in the practical performance for the games (30fps@1080p in RTX 3090) but hopefully we can see something in next-gen GPU.

 

Fast Parallel Construction of High-Quality Bounding Volume Hierarchies - Nvidia Research

It would be interesting to see what DPX could give benefit to this..

 

I doubt NVidia has waited 9 years to put this research into practice.

 

The TRBVH (technique described in the paper) were actually used in the OptiX until version 6.x but I don't know it's still used in the 7.x since the API has changed entirely to support hardware raytracing.
Now we know Nvidia has a patent about hardware SBVH traversal, and they have DPX instructions that can (potentially) accelerates TRBVH construction speed. Even if the performance is not good enough for the games they can bring back it for OptiX anyway.

 

Optix 7 dates from 2019 - the bitwise instructions in Turing look like candidates for the implementation of these techniques - or at the very least, some of them.

So what does DPX bring that's not in Turing that's covered in TRBVH?

9 years is a VERY LONG TIME in computing.

 

As described in the paper, dynamic programming is the key algorithm of building TRBVH.

 

Hitman 3 ray tracing support is currently scheduled for a May 24th patch.

 

F1 22 will have Ray Tracing Shadows, Reflections & Ambient Occlusion

Compusemble has shared a video, showcasing the game running on an NVIDIA GeForce RTX 3080Ti in 4K. The publication used the game’s Ultra settings and enabled all the Ray Tracing effects. They also tested all DLSS modes, as well as native 4K.

https://www.dsogaming.com/news/f1-2...-ambient-occlusion-first-pc-gameplay-footage/

 

Nvm

 

Intel Alchemist supports hardware traversal shader proposed in 2019.

Flexible Ray Traversal with an Extended Programming Model (yonsei.ac.kr)

No DXR/VK support yet.

 

Why though? A Vk extension seems like a good idea.

 

Yeah, Of course it's possible with vendor specific extension.

 

I don't get it, why isn't a DXR 1.1 inline shader that does programmable traversal enough?

 

Because it’s slow.