> You claimed that investing in sampling algorithms would reduce the need for denoising. You claimed that 3Delight's sampling algorithm is proof of that. One t

> You claimed that investing in sampling algorithms would reduce the need for denoising. You claimed that 3Delight's sampling algorithm is proof of that. One thing I can share is that 3Delight has a found a way to do weighted filtering of pixel samples w/o introducing correlation. They do not publish any papers though. Many other vendors of renderers have this issue and the noise this correlation produces is hard to remove. But I'm sure you understand all that since you were offering to lecture me on Monte Carlo methods below. ;) Because of this e.g. Intel Open Image Denoise needs uncorrelated pixels samples to work at all. And the crazy thing resulting from this is that Intel ask you to turn off this sort of pixel filtering in your renderer. Which makes the image more noisy. Aka: you are adding noise to be able to then denoise. More irony ... this time lost on advocates of denoising, I guess. Quote from the IOID docs: "Weighted pixel sampling (sometimes called splatting) introduces correlation between neighboring pixels, which causes the denoising to fail (the noise will not be filtered), thus it is not supported."[1] This is actually misinformation (or maybe trending fake news?). What they should have written is "We believe that weighted pixel sampling (sometimes called splatting) introduces correlation between neighboring pixels [in all renderers we know of] [...]" To quote a 3Delight developer on this text: "That text from Intel, apparently the same as for RenderMan, is pure, unadulterated, pseudo-science. [...] 3Delight will work with [the] Intel denoiser [...]"[2] Proof: you can feed a pixel filtered image from 3Delight into IOID and it will work as the samples are not correlated[3]. [1] https://openimagedenoise.github.io/documentation.html https://openimagedenoise.github.io/documentation.html [2] https://discordapp.com/channels/618404428776472581/618415516641525791/700743937048051833 https://discordapp.com/channels/618404428776472581/618415516... [3] https://cdn.discordapp.com/attachments/618415516641525791/700694474824744980/unknown.png https://cdn.discordapp.com/attachments/618415516641525791/70...