Page 1 of 1
black square in render, hidden emitter
Posted: Fri Feb 03, 2017 12:48 am
by bifterX
hello
Im trying toast up a bounce emitter for a window ray on the floor, when I render I see black square, I've tried all combinations of hide but I still see the black square. Would I get a result by setting up the emitter as an MXM material rather than using the plugin and contextual menus? I've seen tuts showing how to do it in Studio - is this the way?
thanks
rob
Re: black square in render, hidden emitter
Posted: Fri Feb 03, 2017 12:51 am
by JDHill
Can you please upload (to dropbox/etc) a simplified scene that demonstrates this? There should probably be a way, but I'm not clear on the setup, just going by description.
Re: black square in render, hidden emitter
Posted: Fri Feb 03, 2017 1:16 am
by bifterX
Hi JD
Heres a link
https://www.dropbox.com/s/h4838ykj0ases ... y.skp?dl=0
just quickly put my last thought together in Mxed - seems to work in Fire in plugin - just gonna send to Render to check.
is it possible replicate this function within plugin?
sorry, I'm on v3 SU2016
also Im trying to get a particular shadow pattern through a sash window - obviously works via IBR but loads of noise - when I introduce a hidden emitter in the window I lose this detail and background reflection. its a bedroom with en-suite so loads of reflective surfaces - just setting the lighting up first.
cheers
rob
Re: black square in render, hidden emitter
Posted: Fri Feb 03, 2017 2:12 am
by JDHill
Please try selecting the emitter plane's group, going to the Maxwell context menu, and enabling Hide from Camera, Hide from Global Illumination, and Hide from Reflections/Refractions. If I understand correctly, that should also work for the second scenario you outlined.
Re: black square in render, hidden emitter
Posted: Fri Feb 03, 2017 2:25 am
by bifterX
yeah, i tried that, i initially made the mistake of applying the material directly to the face rather than the group and then applying the hide modifiers but i always got a square. now that I've done the emitter as an MXM - no square.
Im gonna try on the window emitter next- see if i can get the sash window show pattern.
Re: black square in render, hidden emitter
Posted: Fri Feb 03, 2017 2:27 am
by JDHill
For the record, I don't have your MXMs, so I was just using the built-in emitter "character" type. It's possible to create an invisible emitter using MXED, but it's not necessary.
Re: black square in render, hidden emitter
Posted: Fri Feb 03, 2017 2:44 am
by bifterX
The only difference I could see was that the mxm material had the 'vacuum' setting - transmit tan with to pure white and an Nd of 1
That's the only thing I can't set in the plugin - but it seems to have worked
Re: black square in render, hidden emitter
Posted: Fri Feb 03, 2017 2:46 am
by bifterX
Sorry, transmittance