[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:



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

[numerobis]

so am i the only one with this problem?

No problem at all?

[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.

[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.

[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?

[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.