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Premultiplied alfa in PSD/PSB/TIF
Posted: Fri May 09, 2025 11:28 am
by mikler
Win 10
GeForce RTX 4090
RAM 128 Gb
572.60
-
2025.1
Cinema 4d 2025.1
Starting from Octane 2024, It stopped recording Premultiplied Alfa in PSD, PSD and TIF Beauty layer. It writes to PNG from the same file as before.
That is, in PNG I get a file with a transparent background in the right places, if the glass is semi-translucent, then the alpha will be appropriate. And in PSD and others— the beauty layer is just on a black background, the alpha is nowhere to be found. At the same time, alpha is present only in the Denoise Beauty layer.
Re: Premultiplied alfa in PSD/PSB/TIF
Posted: Sun May 11, 2025 10:25 am
by mikler
Re: Premultiplied alfa in PSD/PSB/TIF
Posted: Sun May 11, 2025 10:22 pm
by mikler
Re: Premultiplied alfa in PSD/PSB/TIF
Posted: Wed May 14, 2025 8:42 am
by mikler
skientia wrote: Mon May 12, 2025 2:15 pm
Blank test project file In Octane Standalone 2025.a beta 1,
the TIFF results are as expected (working, no issue whatsoever).
Exporting the Cinema4D project file as ORBX to import in Standalone for testing purposes would be informative.
It would double-confirmed the issue is C4D Octane related.
YES! I think you're kidding me. I asked a question specifically about C4d Octane, not about Standalone. Especially not about the
beta version Standalone. I hope you'll fix the problems of recording alpha in TIF and PSD in the
C4d Octane in the next update. Thanks for the helpful advice about ORBX.
Re: Premultiplied alfa in PSD/PSB/TIF
Posted: Tue May 20, 2025 10:40 am
by DinoMuhic
Can someone sum up what the issue is here exactly?
That the plugin does not correctly render out TIFF with alpha?
Its a bit hard to follow this thread.
Cheers
Re: Premultiplied alfa in PSD/PSB/TIF
Posted: Tue May 20, 2025 9:22 pm
by DinoMuhic
ok I can confirm that the alpha is missing if "Multilayer file" is checked in the Render AOV manager tab. But only for the Beauty pass itself.
If that checkbox is off, then the Alpha is present (tested latest build and previewed in After Effects).
One workaround until we fix this would be to add an Output AOV with just a Beauty, that will have an alpha. All other AOVs (and the Denoised Beauty too) do have alpha.
Thanks for reporting.
Re: Premultiplied alfa in PSD/PSB/TIF
Posted: Fri Jun 20, 2025 4:33 pm
by ChrisHekman
mikler wrote: Fri May 09, 2025 11:28 am
Win 10
GeForce RTX 4090
RAM 128 Gb
572.60
-
2025.1
Cinema 4d 2025.1
Starting from Octane 2024, It stopped recording Premultiplied Alfa in PSD, PSD and TIF Beauty layer. It writes to PNG from the same file as before.
That is, in PNG I get a file with a transparent background in the right places, if the glass is semi-translucent, then the alpha will be appropriate. And in PSD and others— the beauty layer is just on a black background, the alpha is nowhere to be found. At the same time, alpha is present only in the
Denoise Beauty layer.
Which version of the plugin where you using where it worked? I tried a 2024.1-R2 and it rendered out completely black, which I dont think is what you want either.