CGI-friendly openDRT

[rolledhand]

Hey, I've been trying to make a cgi friendly version for 4 days now, tried merging both the Jed OCIO and Chris OCIO together (which has some necessary parts for Houdini, I'll be happy to add them myself). I've also tried ociogen to create my own ones, well you can pretty much see the results of it, stuck with it for 2 days after trying to somehow make the OCIO version work in the 1st 2 prior to that.

Could you please create an v1.1 CGI friendly version idealy v2 OCIO? I'm a bit lost on it, maybe even a video on how to use ociogen along with oDRT node would be even better, actually the most appreciated if you found a bit of time. I don't think that more than sRGB Display's all that's necessary for CGI, a lot of people don't run on more than that :)

The initial ociogen was comming out with looks like this and I was stripping it down to the link bellow:

• !
  name: standard - sRGB Display
  family: Image
  description: standard view transform for sRGB Display display (using standard.cube).
  encoding: sdr-video
  from_reference: !
  children:
  - ! {src: reference, dst: Filmlight - E-Gamut2 - T-LogE}
  - ! {src: standard.cube, interpolation: tetrahedral}

  • !
    name: custom - sRGB Display
    family: Image
    description: custom view transform for sRGB Display display (using custom.cube).
    encoding: sdr-video
    from_reference: !
    children:
    - ! {src: reference, dst: Filmlight - E-Gamut2 - T-LogE}
    - ! {src: custom.cube, interpolation: tetrahedral}

  • !
    name: umbra - sRGB Display
    family: Image
    description: umbra view transform for sRGB Display display (using umbra.cube).
    encoding: sdr-video
    from_reference: !
    children:
    - ! {src: reference, dst: Filmlight - E-Gamut2 - T-LogE}
    - ! {src: umbra.cube, interpolation: tetrahedral}

Basically deleted the colorspacetransforms there initially, maybe it's supposed to be there, but it doesn't work properly with it. Started trying some different dst later on, I mean you can try. I've tried so many things to get it working properly that I'm simply getting fully lost in it. I'd really love to start using oDRT, but it's really hard to make work properly w/ OCIO especially when you're just a regular user.

Additionally my tests and even filmlight trasnfer only on custom, it keeps expanding the further I get:
Figma
open-display-transform-1.1-2.0.zip
linkw-exrs+mergedcofigissues

[jedypod]

I do apologize for how long it's been with the 1.1 release out and no OCIO configs. Life stuff has kept me away from this project for a bit. I'll try to scrape out some time soon to put together at the very least a simple "sRGB Display" version of the config for your use case. Stay tuned...

[rolledhand]

Thanks Jed! That'd be amazing, I've been diving through it all for some time, but it's pretty much a hit or miss state testing from my side.

As long as it's a v2 OCIO I can tweak it for Houdini as I need to add aliases and file rules for pipeline sanity as its image node's colorspace selection doesn't work at all and has to be hardcoded within the config...
(will gladly send it back to you once I set all of it up on the stable config)

Can't wait to start playing with oDRT! :)

Just to double-check, all that will be necessary with the OCIO config defined is just exporting the LUT, adding it to the LUT folder + new Colorspace entry with that cube as src and it'll transfer?

[jemabaris]

I'd also highly appreciate an OCIO config for 1.1 ❤️