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adaptivity
Posted: Thu Oct 25, 2018 8:06 am
by lacilaci
Is it working? Are there some good examples of before/after, where it helped?
I'm asking cause in my curent adaptivity of 0.95 and 0.00 give me the exact same result in the same time, absolutely no difference at all.
Re: adaptivity
Posted: Thu Oct 25, 2018 8:32 am
by B.Y.O.B.
Here's the announcement thread:
viewtopic.php?f=5&t=83&p=1187
The thing about adaptivity is that it uses the convergence test.
You can only change how often the convergence test is done if you enable the noise halt condition.
It is on my todo list to make this more obvious, but I didn't come around to it yet.
So in your case, it could be that you did not render enough samples for the convergence test to be done at all.
By default, there is a warmup phase of 64 samples, then after 64 more samples the first convergence test is performed and the adaptivity starts to kick in.
So you need to render more than 128 samples to see an effect.
You can test if the adaptivity is working by enabling the "Samplecount" AOV.
Re: adaptivity
Posted: Thu Oct 25, 2018 8:47 am
by lacilaci
B.Y.O.B. wrote: Thu Oct 25, 2018 8:32 am
Here's the announcement thread:
viewtopic.php?f=5&t=83&p=1187
The thing about adaptivity is that it uses the convergence test.
You can only change how often the convergence test is done if you enable the noise halt condition.
It is on my todo list to make this more obvious, but I didn't come around to it yet.
So in your case, it could be that you did not render enough samples for the convergence test to be done at all.
By default, there is a warmup phase of 64 samples, then after 64 more samples the first convergence test is performed and the adaptivity starts to kick in.
So you need to render more than 128 samples to see an effect.
You can test if the adaptivity is working by enabling the "Samplecount" AOV.
Ok thanks, are there some limitations to what I can use as warmup samples and test step samples? Cause I changed those values and now luxcore renders at 0 samples/sec and rendering is black with about 8 white pixels and if I stop it blender freezes
Re: adaptivity
Posted: Thu Oct 25, 2018 8:58 am
by lacilaci
Ok, so I just learned that enabling the samplecount AOV breaks the rendering, at least in my case...
Re: adaptivity
Posted: Thu Oct 25, 2018 9:08 am
by B.Y.O.B.
Sounds like a bug?
Re: adaptivity
Posted: Thu Oct 25, 2018 9:16 am
by lacilaci
B.Y.O.B. wrote: Thu Oct 25, 2018 9:08 am
Sounds like a bug?
I guess, but is it luxcore or addon? In different scene rendering went on ok, but stopping rendering froze blender and samplecount aov was just few white pixels in transparent background...