Forums Technical Discussion Is relbbox possible in cvex volume procedural?

Is relbbox possible in cvex volume procedural?

   1518   2   0
User Avatar
goldleaf
Staff
4170 posts
Joined: Sept. 2007
Offline
 
I'm trying to modify the cloud rig's cvex shader, so I can taper off the cloud on the boundaries. I want to make it easier to blend between BG cloud rigs, and FG hero clouds.

Could someone share some insight as to why relbbox doesn't work when rendered in Mantra, but does in the viewport? There must be some un-documented gotcah here, right? Or is this a bug?

This is using the Cloud Rig shelf tool, so the viewport is displaying an Attrib VOP, set to SHOP, and pointing to the cvex network in the shopnet.

Thanks!
Edited by - Nov. 11, 2014 00:49:05

Attachments:
screenshot-area-2014-11-10-195402.png (178.4 KB)
modify_cloud_cvex.v003.hipnc (444.9 KB)

I'm o.d.d.
 Report
User Avatar
goldleaf
Staff
4170 posts
Joined: Sept. 2007
Offline
 
I should add, even the bbox input on Volume Global Inputs doesn't work when rendered.

Attachments:
screenshot-area-2014-11-10-204556.png (10.8 KB)

I'm o.d.d.
 Report
User Avatar
goldleaf
Staff
4170 posts
Joined: Sept. 2007
Offline
 
Okay, for anyone else that hits this, I found a work around, fitting P to the bbox_min/bbox_max. The important nodes are purple.

I still wonder if there is a bug, where relbbox should work as expected, but this work around is fine for now.

Attachments:
screenshot-area-2014-11-12-204145.png (189.3 KB)
screenshot-area-2014-11-12-204736.png (18.3 KB)
modify_cloud_cvex.v004.hipnc (446.9 KB)

I'm o.d.d.
 Report
  • Quick Links