Blender Foundation: Blender 2.x BF release: Detail: 20241 half-transparent objects in volume have no shadow.

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Date:
2009-12-03 23:42 Priority:
3

State:
Closed

Submitted by:
Michael Soluyanov (crantisz) Assigned to:
Matt Ebb (broken)

Category:
Rendering Status:
Fixed / Closed

Relates to: Duplicates:

Patches:

Summary:
half-transparent objects in volume have no shadow.

Detailed description

half-transparent objects in volume have no shadow. v25100

Message

Date: 2010-01-30 14:20
Sender: marc chambon
rev26429, ubuntu 9.10 32-bit, ati proprietary drivers, HD4770
same result.
regards

Date: 2010-11-16 16:34
Sender: ronan ducluzeau
ubuntu 10.04 64bits rev33092

Objects outside of Volume but inside its shadow has same problem.
See other render, here.
http://www.pasteall.org/pic/show.php?id=6983

Date: 2010-11-20 17:21
Sender: Ton Roosendaal
Matt: friendly bump up for this report.
I noticed Volume feature was marked WIP in our wiki todo, is this for the list there to tackle later?

Date: 2010-11-29 08:09
Sender: Matt Ebb
Fix is in SVN. It's not a perfect fix, for this file it does the right thing, but other files may have slightly different behaviour. Best compromise for the time being and I don't want to spend any more time fighting with this tangled render code.

Note: Any internal objects are assumed to be hollow, so a shadow ray that passes through an internal hollow object won't be blocked by as much volume inside, and therefore will case a lighter shadow than surrounding areas where shadow ray paths have to travel through the entire width of volume.