NVIDIA has announced a new beam monitoring algorithm. This algorithm will theoretically be up to 65 times faster than in the old ones, it said.
NVIDIA researchers, In 2020, SIGGRAPH introduced a new algorithm created in collaboration with Visua Computing Lab at Dartmouth College. This algorithm, called ReSTIR, can detect and process dynamic and direct (non-reflected) lights from millions of light sources.
Describing the new ray tracking algorithm, Benedikt Bitterli and a PhD student who received a scholarship from NVIDIA in Dartmouth wrote, “Our basic view is to use the information we receive from the pixels that come to decide which rays to watch. This idea brings with it post-transaction balancing and anti-aliase.”.
Beam monitoring technology is evolving day by day
Kevin Margo, Creative Director of NVIDIA CGI, said: “This research could lead us to a fundamental change. In visual scenes, we need to intuitively place an arbitrary number of resources in order to create dynamic shadows.” The ReSTIR algorithm briefly resamples a series of light samples and applies them to spatial and temporal samples around it to get information from the samples around it.
The newly developed beam monitoring algorithm can monitor a maximum of 8 rays per pixel and has managed to process a scene containing 3.4 million resources in less than 50 milliseconds. Of course, the video card has to be strong, which will process such a high-quality image and algorithm. NVIDIA has opted for one of its flagships, the GeForce RTX 2080Ti graphics card, but according to the researchers, it is worth using a video card with higher memory for other scenes other than the amusement park scene used in the test.
In general, this approach has a speed increase of up to 60 timeswhen a side-free prediction tool is used according to algorithms used by previous ray tracking technologies, and up to 65 times the speed of the dependent prediction tool is used. Another important issue is that regeneration and filtering do not need to be processed after the build process is complete.
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As with most scientific research, the ReSTIR algorithm is not yet ready. We expect it to be officially published in the future.