AOV_rebuild_karma_examples_v002.nk
This updated nuke script brings everything (Karma) in the project into one place to show examples of AOV_rebuild and track development of Karma render engine.
To use the render files
https://drive.google.com/file/d/1xFd_NTzeSA4k5ENejdn-RPZtkI2HSJTL/view?usp=sharing
Download render.zip and extract inside AOV_rebuild_karma_examples folder (where you've placed it on disk).
(eg.) /example/directory/path/AOV_rebuild_karma_examples/renders
Be sure to keep this script 'AOV_rebuild_karma_examples_v002.nk' in the AOV_rebuild_karma_examples folder for relative file paths to match.
Once these are loaded correctly, you might need to update the colorspace knob of each read to match the version of ACES your version of Nuke is using.
This script uses Stamps for instancing and layout purposes so if you're not familiar with Stamps here's the link.
https://github.com/adrianpueyo/Stamps
Then use the 'Master_Switch' to toggle the viewer between versions of Houdini 21.0.440 & Houdini 22.0.368 and CPU / XPU.
All layers from Houdini's Karma Render Settings node shuffled with postage stamps.
As discussed in the 'Limitations' page; examples of Emissive Objects, Light Sources vs Additive Rebuild Divide / Multiply Loops.
Out of the box Houdini 22.0.368 renders are significantly improved which is great! The only thing I can't figure out between these versions is that renders from Houdini 22.0.368 do not divide color from light as expected in the albedo rebuild.
Without separating color from light to grade the albedo alone, the shelf tool 'karma_albedo_raw_rebuild.nk' included in the project doesn't work. If anyone using this project knows what is wrong I'd be very grateful if you would contact me with the answer via the issues page.
All renders are created from the same scene file in Houdini with default settings.