[solved]glass in front of backplate

[peterguthrie]

having a problem just now that hopefully is just me being stupid.

I have a backplate on a plane, with a glass balustrade in front of it. When I have the glass material as 'thin' all is fine, as soon as I untick 'thin' then my glass goes milky white.

its fine in front of corona sky btw.

[peterguthrie]

Fixed it,

seems 'cast shadows' being unticked in object properties of the backplate was screwing things up.

why would this be??

[maru]

Because it is fake. :)

Use the rayswitch method for the backplates: https://coronarenderer.freshdesk.com/support/solutions/articles/5000515605

[peterguthrie]

already was using the rayswitch method.. but isnt it strange that cast shadows  being unticked makes a difference?

things like this are very useful to know for people coming from vray to corona

[maru]

Oh, you unticked "cast shadows" in object's properties. Sorry, I thought it was in CoronaLightMtl's properties.

Then take a look here: https://coronarenderer.freshdesk.com/support/solutions/articles/5000516723

[peterguthrie]

thats it!

thanks, very useful info