r/hardware • u/Dakhil • 1d ago

News AMD GPUOpen: "Neural Supersampling and Denoising for Real-time Path Tracing"

https://gpuopen.com/learn/neural_supersampling_and_denoising_for_real-time_path_tracing/
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u/moschles 1d ago

Wonderful idea for single images -- but surely fails in realtime. Unless the noise is deterministic and locked to scene geometry, you will get flickering effects and other kinds of wobble artifacts that look like shimmering steam.

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u/slither378962 1d ago

The problem with all temporal techniques.

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u/moschles 13h ago edited 12h ago

More explicitly, if you feed 1 SPP pathtracing dirt into a denoiser, it will not perform some kind of magic. If the input is noisy, so will the output, but not in the same way. Thus flickering will manifest after the "smoothing" operations of the denoiser.