CGTalk - GI Artefacts with Mograph?

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shamhead

05-04-2010, 10:45 AM

Hi all,
was hoping to get some advice on a scene which you can download below. I've stripped it down somewhat in an attempt to work out why I'm still getting a constant GI flickering in the shadows without success. The rubbish thing is, I rendered out another scene which has a setup pretty much the same as this recently which worked fine! I tried copying all my elements in the other scene which worked but on render I'm getting the same artefacts.

CLICK HERE FOR PROJECT FILE (http://www.shamhead.com/forums/dominoes.zip)

My settings etc are below, any help would be appreciated, otherwise I think ill be binning GI for this project, it can be a real headache sometimes.

Cheers.

http://www.shamhead.com/forums/1.jpg

http://www.shamhead.com/forums/2.jpg

http://www.shamhead.com/forums/settings1.jpg

http://www.shamhead.com/forums/settings2.jpg

shamhead

05-04-2010, 11:04 AM

DOh! Just solved it, it was a simple matter of unticking "render instances" checkbox in the Mograph cloner objects which I had turned on to get faster previews working.

Heerko

05-05-2010, 09:48 AM

Hmmm good to know for future projects. Do you maybe also know why render instances gives this problem? Is this a bug?

hiasakite

05-10-2010, 06:58 PM

Thanks for the tip. Not only can render instances cause this, I've also seen hidden objects being caught by GI and causing all kinds of weirdness (for example I had a mograph object and copied it as a backup, then hid it both from camera and render - yet it still produced artifacts in the final render).
If you ask me, it's a bug.

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