Page 1 of 1

Embeded alpha channel in coop mode

Posted: Thu Aug 09, 2012 1:56 pm
by numerobis
there seems to be a bug using the embeded alpha channel of PNGs with HDRI background/lighting
It only happens in coop network mode, the direct render is ok.
Using a separated alpha map works. Here is a comparison of the network render results:

Image

scene setup:
- HDRI for all channels
- one emitter material using MXI
- two normal emitter materials

Re: Embeded alpha channel in coop mode

Posted: Mon Aug 13, 2012 9:02 pm
by numerobis
so am i the only one with this problem?

No problem at all?

Re: Embeded alpha channel in coop mode

Posted: Mon Aug 13, 2012 9:32 pm
by Mihai
Could you please try with a TIF also to see if it's just an issue with PNG, or really it's a difference between removing the alpha afterwards in PS, vs doing it 'beforehand' when saving with PNG and transparent alphas.

Re: Embeded alpha channel in coop mode

Posted: Mon Aug 13, 2012 10:24 pm
by numerobis
i will try it.

I have to add that this scene was using multilight, i don't know if this could make a difference.

Re: Embeded alpha channel in coop mode

Posted: Fri Aug 17, 2012 11:06 am
by tom
The background in these rows are different. Clouds and trees? I didn't get what's wrong with your output. Could you send the scene to tomATnextlimitDOTcom?

Re: Embeded alpha channel in coop mode

Posted: Fri Aug 17, 2012 11:54 am
by numerobis
no, it is the same background.
The "clouds" should be the trees in the lower image. But it seems to be "merged" with the background EXR.
I will try to reduce the scene to the neccessary elements and send it to you.