Hi,
I'm trying to check my ACES pipeline for a project and I didn't manage to reproduce what I got with Cycles.
My workflow is : Conforming in Resolve ACES CCT and vfx plates exported as ACEScg (EXR half-float) - CGI in Blender, exported as ACEScg (EXR half-float) - Comp in NUKE also in ACES - Grading/Mastering back in Resolve. My view transform and mastering is in Rec709
For testing it I always made a simple "blank test" : I export a single frame according to the pipeline (ACEScg), import it in blender, render it back and check in resolve if I got a perfect match.
With Cycles I got no issue : I use the "image as plane" with shadeless option to import it and I tag ACEScg as IDT for the texture.
I install an ACES OCIO for overriding the native blender color management, export it and I got a perfect match.
I also always check with a colorchecker exr file also in ACEScg
But I didn't manage to make it work with Octane :
In the addon preference I use the "other config file" option with the same OCIO I use with Cycles.
For the other option I try with both "automatic" and manual with "ACES2065-1" as an entry for Manual(Octane) ; and both "ACES2065-1" or "[COlorSpace]ACES-ACEScg(ACES)"
I also deal with the Octane Imgager : using ACES:Rec709 as OCIA view (but it is only for viewer isn't it?)
For the plate, as the image as plane didn't work in Octane, I just create a plate at the good ratio and apply the texture as a RGB image.
I use a "OCIO color space" node tag as ACEScg in the Color space input socket of this "rgb image" node
For cheating the shadeless option : I use a diffuse material with roughness at 1 an use the emission input socket.
In the texture emission node I put the power to 1.
At last, for the rendering, I check the octne output option in the output properties tab
with:
file type : "EXR"
bit depth : 16-bit(floating point)
Color space : "ACEScg"
But, when I render the image, I got no match with the original plate.
Can anyone help me with that : I try a lot of variation but there is too many tweaking possibilities (issue with colormanagement, with the shader, with the render settings)...
I really to use blender octane for the project I am supervising but I need to be first 100% sure for the ACES pipeline
Thank you by advance