It has become easier in Resolve 17, as you can add custom IDTs.
If you take a DCTL generated by @tommyzenth’s tool, and place it in the IDT folder under:
- MacOS: "~/Library/Application Support/Blackmagic Design/DaVinci Resolve/ACES Transforms" double check folders again
- Windows: "%AppData%\Blackmagic Design\\DaVinci Resolve\\Support\\ACES Transforms"
- Linux: "~/.local/share/DaVinciResolve/ACES Transforms"
(this is copied and pasted from the DCTL ReadMe. I can confirm the MacOS one is correct, but haven’t verified the others)
You then need to add one extra line to the top of the DCTL in a text editor:
DEFINE_ACES_PARAM(IS_PARAMETRIC_ACES_TRANSFORM: 0)
Restart Resolve, and your custom IDT will now show up at the bottom of the built-in IDT list.