Various BlendLuxCore tests - Caustics and others

[JaAlVir657]

Hello,

For today, "Caust.Icosaedron"


Blender 4.5.4 - BlendLuxCore 2.10.2 - Glass


Glass + Dispersion


Glass + Thin Film Coating


Glass + Dispersion & Thin Film Coating

As usual, it's the same as BlenderArtists !

Hope you like them !

See you

[CodeHD]

This looks like a high path depth was involved

[JaAlVir657]

Hi,
Thanks, but how did you detect it ?

My values ​​are as follows:
Total Path Depth : 128
Diffuse, Glossy & Specular : 32

Is this not the right way ?
I thought (naively perhaps) that the more there are, the better and more precise it is !

I haven't even used the "Environment Light Cache" yet.

Could you recommend a good tutorial for optimizing my settings according to the LuxCore "philosophy and methodology" ?

Thank you for your time ...

[CodeHD]

Particularly the first picture has some typical look of many interior bounces, the sort of substructure in the glass. (At least looks like typical things I've seen).

Nothing wrong with choosing a large number of bounces, it may be needed to avoid black sports.

There was a post about glass tables a few years ago where I calculated that around 200 bounces may be needed at extreme angles. viewtopic.php?p=25818#p25818

Most of the time such high numbers are not necessary though.

Only thing I notice is "Diffuse, Glossy & Specular : 32". That would sum up to 96 as the total maximum, so setting the total path depth higher shouldn't do anything.
(This also proves that your glass object does fine with 32 bounces as regular glass counts as specular)