[Sidefx-houdini-list] overlapping point instance volume density pop

François Duchesneau houdini at trinix.ca
Mon May 29 21:58:42 EDT 2017

Hi Tom,

It's normal to have an increase of density when two volumes overlap. You 
can reproduce it by rendering two volume sphere overlapping a little 
bit. Are you referring to something else?


On 05/29/2017 07:04 PM, Tom Nixon wrote:
> Hey everyone,
> I'm getting a result in my renders that I'm don't fully understand yet. I
> hope one or some of you have come across this and can shed some light on
> it.
> I have a number of volumes that are being instanced as packed disk
> primitives in my renders. The density appears to pop up and down a couple
> times through the frame range.
> When I isolate each volume and render it, I am unable to see the same pop
> in the renders.
> It appears that the pop is a result of the overlapping volumes, as when I
> offset the points to reduce the overlapping and render them together, the
> pop appears to disappear.
> If anyone has any experience with this, I'd appreciate your input!
> Thanks,
> Tom
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