Steyin, if you set your render time to 9min and turn on denoising, what does that look like compared to 10min? Surely it looks better.
Of course it's this.
Your 10 minute render has much higher noise ratio (more than 10percent) than the latter with 30 minutes (but 10perc. noise ratio is still very high, very noisy). But there is
no relationship between that time and threshold.
If you had written down the noise ratio that you had after 10 minute first render, than used the exact noise ratio as limit for the next one, it would be done again in 10 minutes. And they would look identical.
Using any kind of limit, has no effect on actual performance.
I'm finding that a smaller time limit with denosing is producing an image that is noisier than just rendering for the 10 minutes without denoising (in the case of the 3000px).
This is almost impossible, because the overhead for additional passes needed for denoising is rather small. It can produce 'ugly' result (because high noise would produce artifacts and loss of details), but not 'noiser' (noiser=higher noise ratio).
Steyin, aren't you completely just confusing the hell out of it ? Denoising, has nothing to do with Noise threshold limit. And 10 minute render against 10 minute render with 1 minute denoise will look dramatically better in favour of denoised, with exception of quality loss if noise ratio was too high. But if it was too high to begin with, than your non-denoised test would be ugly and noisy as well.
My 7680px (8k) renders take 8 hours on 40 cores. With denoising, I can denoise after 2 hours (where I have reached about 2.5 +/- noise ratio) and get literally almost the same result, minus some bump map loss.
The same goes for my 2560px tests, I just don't have any numbers from head right now.
Can you post screenshots with framebuffer Stats page open ? Maybe you encountered a bug that needs solving but surely looks like something more trivial.
« Last Edit: 2016-05-22, 21:04:51 by Juraj_Talcik »
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