I had this forest scene modeled in V13 and it had a mist effect using a box shaped volumetric effect, and it worked fine. I loaded the prj yesterday in V15 and when I rendered, the volumetric effect wouldn't show up. Thinking possibly it was some incompatibility between the two versions, I got rid of the old one and made a new one to still no effect. Is there some new rendering setting or something that enables volumetric effects?

Could you post a PRJ with just one of them in the middle of a blank chor that works in V13?

I can't get them to work in either version so, I must be dong something wrong.

I think when I made this Volumetric Effects tutorial (v14 I believe)
http://www.hash.com/forums/index.php?s=&am...st&p=258581
Vol Effects did not work with boxes. Try using a cylinder and see how that works.

I did a test to day with all 12 variants of the volumetric effects and, no, boxes don't seem to work. Every one of them has something odd about it.

But I couldn't get a box to work in V13 either, so if Darkwing can make a sample PRJ that does work in V13 that might illuminate things.

odd, ok, i'll make a simple one in V13 and V15 and upload

Yep, just tried it, V13 works fine, V15 doesn't work at all

V13
Click to view attachment
Click to view attachment

V15
Click to view attachment
Click to view attachment

have done more experimenting, all other types of volumetric work in V15 except box. unfortunately that made me have to put a bunch of spherical ones for my mist instead of just two box ones, but oh well

Yup, your v13 PRJ worked in my V13 but not in V15.

Here's what you do... go to hash.com/reports and "report issue".

Explain that what worked in V13 doesn't work in V15 and include a render of that same PRJ in both V13 and V15

Attach the V13 PRJ in the upload file spot

then hit "submit."