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Re: Shadow Terminator problem

Posted: Wed Nov 27, 2019 2:48 pm
by Dade
Based on Appleseed workaround: https://github.com/skwerner/blender/com ... 1be6a29bd1

I don't think it has an high priority at the moment but something to keep an eye on.

Re: Shadow Terminator problem

Posted: Wed Nov 27, 2019 2:54 pm
by Sharlybg
Our current Velvet shader seem to have some shadow terminator issue even without bump map. have to find time to investigate.

Re: Shadow Terminator problem

Posted: Wed Nov 27, 2019 4:29 pm
by Racleborg
Sometimes, tweaking the 'Advanced' settings or making the light source larger appears to fix this. Also, it can be really sensitive to whether of not there is enough Sub-divisions. I don't understand why, but that's how I've been using it.

Re: Shadow Terminator problem

Posted: Wed Nov 27, 2019 4:56 pm
by Egert_Kanep
Is shadow terminator treated automatically or are there any settings to turn it on?

Re: Shadow Terminator problem

Posted: Wed Nov 27, 2019 5:08 pm
by Sharlybg
Racleborg wrote:
Wed Nov 27, 2019 4:29 pm
Sometimes, tweaking the 'Advanced' settings or making the light source larger appears to fix this. Also, it can be really sensitive to whether of not there is enough Sub-divisions. I don't understand why, but that's how I've been using it.
i do the same but this is not normal. a single shader shouldn't completely dictate your lighting preference ;)

Re: Shadow Terminator problem

Posted: Wed Nov 27, 2019 5:20 pm
by Racleborg
i do the same but this is not normal. a single shader shouldn't completely dictate your lighting preference ;)
I agree, and even though I really like the Velvet shader it has been a bit hit and miss at times. The settings aren't labelled very definitively and are described as 'abstract'(or something like that) which may not be helping matters.

Re: Shadow Terminator problem

Posted: Wed Nov 27, 2019 7:05 pm
by Dade
Egert_Kanep wrote:
Wed Nov 27, 2019 4:56 pm
Is shadow terminator treated automatically or are there any settings to turn it on?
It is always enabled (if you use bump/normal mapping, the topic of this thread, not the last link I posted).

Re: Shadow Terminator problem

Posted: Thu Nov 28, 2019 7:22 am
by Mango3
Egert_Kanep wrote:
Wed Nov 27, 2019 4:56 pm
Is shadow terminator treated automatically or are there any settings to turn it on?
Just to clarify. The appleseed fix is not automatic, one can set a numeric correction factor (part of the object modifier) for the affected object.
It is not dependent on bump mapping and works on general low poly objects.

Re: Shadow Terminator problem

Posted: Mon Dec 02, 2019 9:41 pm
by kintuX
From what I saw, it produces really good and expected results. Hope one day to see it land in LuxCore. 8-)