Add support for .cube LUTs

[AlexDaniel]

Previous forum discussion: https://forum.babylonjs.com/t/support-for-cube-luts/32630/2

Right now colorGradingTexture only supports .3dl file.

The problem is very simple: a lot of tools (e.g. Davinci Resolve) can only export .cube files. It'd be nice to have first class support for that format to avoid extra conversion. Also, after hours of searching, I found no open-source utility to convert between the two formats, so I'm not sure that such conversion is even available.

An example .cube loader can be found in the amazing postprocessing library: https://github.com/pmndrs/postprocessing/blob/main/src/loaders/LUTCubeLoader.js

[carolhmj]

This would be a great contribution to the library, if anyone on the community wants to jump in 🙂

[github-actions]

This issue has been automatically staled because it has been inactive for more than 14 days. Please update to "unstale".

[AlexDaniel]

Still something I need 😇

[sebavan]

Would you want to contribute a loader for it ?

[AlexDaniel]

Not right now, but if nobody else does it in like two months or so, then I will.

[github-actions]

This issue has been automatically staled because it has been inactive for more than 14 days. Please update to "unstale".

[AlexDaniel]

14 days? Seriously?

…

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[sebavan]

Agree it is too short, I ll change it tonight.

[github-actions]

This issue has been automatically staled because it has been inactive for more than 14 days. Please update to "unstale".