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Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 10:58 am
by Sharlybg
Yes, like PhotonGI, there is a ".visibilitymapcache.visibility.glossinessusagethreshold" to set the glossy threshold.
So what is the current glossinessusagethreshold number ? And what will happen if we reduce it to make it cover very reflective object ?

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 11:40 am
by lacilaci
Sharlybg wrote: Mon Jul 29, 2019 10:58 am
Yes, like PhotonGI, there is a ".visibilitymapcache.visibility.glossinessusagethreshold" to set the glossy threshold.
So what is the current glossinessusagethreshold number ? And what will happen if we reduce it to make it cover very reflective object ?
I think we already saw what will hapen...

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 11:52 am
by Dade
Sharlybg wrote: Mon Jul 29, 2019 10:58 am
Yes, like PhotonGI, there is a ".visibilitymapcache.visibility.glossinessusagethreshold" to set the glossy threshold.
So what is the current glossinessusagethreshold number ? And what will happen if we reduce it to make it cover very reflective object ?
it is 0.05 like with PhotonGI.

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 12:02 pm
by Sharlybg
it is 0.05 like with PhotonGI.
Is there any way to break this reflection limitation ?

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 2:47 pm
by Dade
Sharlybg wrote: Mon Jul 29, 2019 12:02 pm
it is 0.05 like with PhotonGI.
Is there any way to break this reflection limitation ?

Eh ? It is a feature, not a limitation :?: It handle glossy-nearly-specular surface as specular instead of glossy.

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 4:13 pm
by Sharlybg
Eh ? It is a feature, not a limitation :?: It handle glossy-nearly-specular surface as specular instead of glossy.
I mean a limitation in a way that if you go too low something like 0.001 the result lead to light weird beahaviour or black spot .... anyway result go too wrong to let it go.
I think we already saw what will hapen...
An image to refresh my brain :)

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 4:29 pm
by kintuX
Sharlybg wrote: Mon Jul 29, 2019 12:02 pm
it is 0.05 like with PhotonGI.
Is there any way to break this reflection limitation ?
It's a feature that needs to be exposed in Blender ;)

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 4:44 pm
by lacilaci
Sharlybg wrote: Mon Jul 29, 2019 4:13 pm
I think we already saw what will hapen...
An image to refresh my brain :)
With this visibility cache, before we had artifacts on very glossy objects, now they are excluded from env.cache if they are bellow 0.05 glossiness...

One way or another, they are gonna be noisy. At least from what I've experienced so far.

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 5:14 pm
by Sharlybg
It's a feature that needs to be exposed in Blender ;)
So my point stay. I mean limitation or no limitation in way that even high reflection object can still be well sampled as it is for less reflective one without artifacts.
It is a limitation to get all the speed unlocked :

If you stay at 0.05 =====>> you get artefact free render =====>> you get too much noise

If you go down 0.05 ====>>you get performance but =====>> Artefacts stop you

you're limited anyway.

Re: Env. Light Visibility Cache

Posted: Mon Jul 29, 2019 5:24 pm
by lacilaci
Sharlybg wrote: Mon Jul 29, 2019 5:14 pm
It's a feature that needs to be exposed in Blender ;)
So my point stay. I mean limitation or no limitation in way that even high reflection object can still be well sampled as it is for less reflective one without artifacts.
It is a limitation to get all the speed unlocked :

If you stay at 0.05 =====>> you get artefact free render =====>> you get too much noise

If you go down 0.05 ====>>you get performance but =====>> Artefacts stop you

you're limited anyway.
It was just my assumption, only Dade knows if it's like that.