[iandavis]

I just finished some extensive testing with glass. Here are my findings.

-there is no difference in shadow between 1mm and 5mm thick glass.
-there is no way of removing the shadow from glass. in the real world we all know...1mm thick glass does NOT cast a shadow (at least not one easily perceptable).

- There is no difference in shadow by subdividing the object
I created 4 panes of glass from a single tripled box to a 16x16 tripled box. no difference in shadow.

- white glass produces the least amount of shadow... but it's still too much.

- changing the absorbtion from 0 through to 1 has no effect on shadow.

- changing the Abbe and the ND does not change the shadow substantially (except to make it darker)

So, it seems this is a very serious flaw/bug. Not being able to have a reflective yet transparent (cast no shadow) material...

Ian.

[Fernando Tella]

All I can say is:

[giacob]

to me is a much more serious bug than having black dot on ss .. or ather bug that were fixed..
and i am worried by the fact that THEY dont say nothing about that..

oscar.. tom... mawell lighting is fantastic (no othere renderer to me achieve such a beatifull ligth ) ......just because we all love maxwell that we are longing to know when this bug will be fixed

[Aldaryn]

iandavis, this is still not about the glass plane itself (its size, its mesh density), or its thickness.
Maxwell handles absorption of dielectric mediums well, if you render a 2cm thick glass will render much darker, than a 4mm thin one, if you wait long eneugh, the caustics (the shadow of the glass plane) will appear as dark accordingly.

In the first few levels, only the shadow, the occluded area, is visible, it takes longer to calculate transmitted light.