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Re: PhotonGI cache
Posted: Mon Feb 18, 2019 2:20 pm
by lacilaci
cache+bump seems to work alright, probably needs more testing but, look at oidn+reflected caustics / unclamped rendering
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 2:22 pm
by epilectrolytics
B.Y.O.B. wrote: Mon Feb 18, 2019 8:22 am
Maybe the issues come from the export/import? For example excessive scale in object space, or extremely large/small models, causing floating point precision issues?
I just fought with this last week but now with a build from two days ago I cannot reproduce it
Either I'm stupid or it's gone, anyways, currently there is no "black box light leak" issue apparently
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 3:05 pm
by marcatore
lacilaci's image seems really good... render times?
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 3:11 pm
by lacilaci
marcatore wrote: Mon Feb 18, 2019 3:05 pm
lacilaci's image seems really good... render times?
this is 15min. in 2K using gtx1060... I wanted to render bumpmapped material covered glossy walls, but forgot to turn on clamping. Pretty surprised to see how oidn handled those caustics with OCLpath.
@Dade, do you plan to work on caustic cache first or make all materials work with indirect cache first?
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 3:31 pm
by Dade
lacilaci wrote: Mon Feb 18, 2019 3:11 pm
@Dade, do you plan to work on caustic cache first or make all materials work with indirect cache first?
I'm thinking to go first for caustic cache: it is a bit more complex than indirect cache on GPUs and it is required to cover all features on GPUs too (I mean, you can already render any material with indirect cache, it just fall back to normal path tracing for one bounce, having the support for more material will only slightly increase the performance).
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 3:40 pm
by lacilaci
Dade wrote: Mon Feb 18, 2019 3:31 pm
lacilaci wrote: Mon Feb 18, 2019 3:11 pm
@Dade, do you plan to work on caustic cache first or make all materials work with indirect cache first?
I'm thinking to go first for caustic cache: it is a bit more complex than indirect cache on GPUs and it is required to cover all features on GPUs too (I mean, you can already render any material with indirect cache, it just fall back to normal path tracing for one bounce, having the support for more material will only slightly increase the performance).
Well... coating material is kinda problem... I have a scene that has no benefit from caching due to coating layer killing cache
this is indirect debug view, wood materials that have coating layer are black
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 4:12 pm
by Dade
lacilaci wrote: Mon Feb 18, 2019 3:40 pm
Well... coating material is kinda problem... I have a scene that has no benefit from caching due to coating layer killing cache
this is indirect debug view, wood materials that have coating layer are black
Glossy coating is easy to add but are you using coating over what type of material ?
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 4:32 pm
by lacilaci
Dade wrote: Mon Feb 18, 2019 4:12 pm
lacilaci wrote: Mon Feb 18, 2019 3:40 pm
Well... coating material is kinda problem... I have a scene that has no benefit from caching due to coating layer killing cache
this is indirect debug view, wood materials that have coating layer are black
Glossy coating is easy to add but are you using coating over what type of material ?
over glossy... I did this to get secondary specular lobe. Just seemed to look more closely resembling wood. Underlying glossy is pretty rough, so it would do well with cache
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 4:38 pm
by Dade
lacilaci wrote: Mon Feb 18, 2019 4:32 pm
over glossy... I did this to get secondary specular lobe. Just seemed to look more closely resembling wood. Underlying glossy is pretty rough, so it would do well with cache
It should the same of plugging the wood texture on Kd glossy parameter and using all glossy coating parameter on other glossy arguments (but only quite slower to render).
Anyway, it is easy to add the support for glossy coating and I will.
Re: PhotonGI cache
Posted: Mon Feb 18, 2019 6:48 pm
by lacilaci
Dade wrote: Mon Feb 18, 2019 4:38 pm
lacilaci wrote: Mon Feb 18, 2019 4:32 pm
over glossy... I did this to get secondary specular lobe. Just seemed to look more closely resembling wood. Underlying glossy is pretty rough, so it would do well with cache
It should the same of plugging the wood texture on Kd glossy parameter and using all glossy coating parameter on other glossy arguments (but only quite slower to render).
Anyway, it is easy to add the support for glossy coating and I will.
Fantastic, btw regarding caustics, do you think that you could cache reflective caustics too? Maybe bellow certain roughness, opposite of indirect cache...