LC retrace Thresold vs Detail enhance

[Subburb]

Hi Chaos team,

i've understood that retrace thresold is here to :
- avoid light leaks when bright and darks LC samples a near (doors/windows)
- improve glossies reflections/refractions especially if "use LC for glossy rays" is used.

I've couple of questions here...

- Is this option usefull for all Gi configs ? As far as i've tested it, it gives best results in IM+LC, universal (impressive !) but i've seen no difference in LC+LC.
- When IM+LC, Is it useful to use it WITH detail enhance ?

Thanks by advance,

[vlado]

i've understood that retrace thresold is here to :
- avoid light leaks when bright and darks LC samples a near (doors/windows)
- improve glossies reflections/refractions especially if "use LC for glossy rays" is used.

This is correct, yes.

- Is this option usefull for all Gi configs ? As far as i've tested it, it gives best results in IM+LC, universal (impressive !) but i've seen no difference in LC+LC.

If you use the light cache only, then differences will be minimal, yes. It makes most sense to use it either with the irradiance map or brute force as a primary engine.

- When IM+LC, Is it useful to use it WITH detail enhance ?

It will still be useful if "use light cache for glossy rays" is enabled.

Best regards,
Vlado

[Subburb]

Thanks Vlado for this fast and clear answer..
I must say that i'm impressed by thi 2.0 beta.. you & team have made a big hard work.. congrats !

i think i'll activate this option by default in SRfor Vray 2.0 as it improves greatly renderings...
I'm sure i can lower the irradiance map a bit (or increase interp samples) and reduce a bit LC subdivs (or raise sample size) to compensate the time taken by retrace thresold.