LuxCoreRender Forums

lacilaci wrote: ↑Tue Jul 30, 2019 8:43 am here, but it never gets that noisy with a basic setup as it does within "complex" environment full of obstacles.
lux_sink_only.blend

The test scene doesn't show the kind of bad fireflies you have, after 60secs is pretty much fireflies free:


I think the source of your fire flies may be the very reflective tap over the sink, have you tried to remove just the tap ? Have you tried hybrid forward/backward path tracing ?

Dade wrote: ↑Tue Jul 30, 2019 10:07 am Have you tried hybrid forward/backward path tracing ?

To further elaborate, with hybrid forward/backward path tracing: anything over the glossiness threshold will be handled by PhotonGI and anything under will be handled by hybrid forward/backward so you should not have fireflies at all (aside from SDS paths but your scene should not have any significative SDS path).

To further elaborate, with hybrid forward/backward path tracing: anything over the glossiness threshold will be handled by PhotonGI and anything under will be handled by hybrid forward/backward so you should not have fireflies at all (aside from SDS paths but your scene should not have any significative SDS path).

Look like a very good idea

no change,

I also simplified some materials around the sing that could be in reflections but still everything is the same... I will start deleting objects from scene to see if something is messed up.

this is so weird
BY THE WAY: I had quite a few banana trees/leaves outside the windows that have all translucency. Once I deleted them the performance increase is insane (aside the weird sink)

So a sidenote to this topic: can something be done about translucency performance? Stuff like curtains and vegetation directly on/outside windows will destroy performance!

I'll continue to clean up the main scene for now...

from this image it seems that not just the sink have problems.

Take a look to the part of the table in front of the sink that look to the sink. It's full of noise. And there is also a noisy area on the right part of the image where the kitchen ends (visually near to the coffee bottle).

marcatore wrote: ↑Tue Jul 30, 2019 10:46 am from this image it seems that not just the sink have problems.

Take a look to the part of the table in front of the sink that look to the sink. It's full of noise. And there is also a noisy area on the right part of the image where the kitchen ends (visually near to the coffee bottle).

yea I've noticed....

still this keeps looking weird, but performance increases:

please try with clamping = 1

clamping too low just introduces bunch of other problems: best I could get is using very low photongi glossiness threshold... So maybe it's just a performance issue in this type of scene...

Another test results using Path OCL.
Halt: 160 samples
OIDN v1.0

1. PT

- RAW - OIDN stats
2. + Env. Cache

- RAW - OIDN stats
3. + PGI

- RAW - OIDN stats To be continued...