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Philbert
08-14-2014, 05:37 PM
I downloaded this free plant from X-Frog and it's making objects behind it invisible. I think someone helped me with this before but I forget what the solution was. Anyone know? It's driving me nuts, trying to solve it. The surface for the leaves seems pretty straight forward. Each one is just a poly with a UV map and leaf image for color spec transparency and bump.

123641

http://content.screencast.com/users/philnolan3d/folders/Snagit/media/4209e77d-5f3b-4adc-8777-f51013747706/08.14.2014-19.40.png

ernpchan
08-14-2014, 06:08 PM
That's a weird one. What if you increase your 'Ray Recursion' limit? What about using Clip Maps instead? Does turning 'Exlude From VStack' off help?

Kaptive
08-14-2014, 06:30 PM
Yeah as Ernpchan says, ray recursion limit is most likely. Though also worth mentioning, is that VPR can be a bit weird when looking through multiple transparencies, certainly in draft mode. So worth checking against a proper render.

Philbert
08-14-2014, 07:24 PM
Ray Recursion Limit was the trick. I tried cranking it up to 20 before and that didn't work so I thought it must be something else. This time I cranked it up the 30 and it solved the problem.

Thanks guys!

123643

probiner
08-14-2014, 10:12 PM
Why not use the transparency map as clip map?

Cheers

Kaptive
08-14-2014, 10:16 PM
Why not use the transparency map as clip map?

Cheers

Stop being so sensible! lol

It's so obvious that it clearly should have been said sooner. Well pointed out.

probiner
08-14-2014, 10:59 PM
You trippy cat! :)

Just pointed it out because increasing the Ray Recursion Limit a lot can be render costly if you're going to have materials like glass, etc also in the scene.

The drawback is that those settings are kept in the object properties of the scene... I actually haven't tested how clip maps work with instances also.

Cheers

djwaterman
08-15-2014, 05:20 AM
Clip maps work with instances, I've been doing that lately. I've also had this same problem as well and it drives you crazy and makes your head hurt. These plants can have many layers of transparent leaves and you end up having to crank up the RRL a lot, I'd try clip maps and see if it looks okay, most of those xfrog alpha maps have hard clean edges so it should work really well and render faster.

Danner
08-15-2014, 07:25 AM
Unless you need variable transparency clip maps are better/faster in most situations. The biggest downside is that they are applied per object, not per surface.