The File Output node does now allow empty names for its sockets, so
doing things like flat RGBA pass in an unnamed layer is impossible,
which was possible before the recent redesign of the node. To allow
this, socket items accessors now have an option to allow empty names.
Implementation wise, the non-default variant of BLI_uniquename_cb was
used to make the empty name replacement optional. Incidentally, the new
function is more CPP friendly, so the MAX_NAME length limitation was
lifted.
Pull Request: https://projects.blender.org/blender/blender/pulls/144334
This patch redesigns the File Output node to provide better UX and UI.
This is mainly achieved by allowing the user to create inputs by
dragging into an Extend socket and adjust existing inputs using the
familiar UI list design available in Blender. Additionally, various UI
changes were done:
- The Use Node Format option was renamed to Override Node Format for
clarity.
- Socket types are now fixed and do not change as new links are made,
allowing users to specify the exact output type and employ implicit
conversion if needed.
- The distinction between images and Multi-Layer EXR was made clearer.
- Final output paths are drawn in the UI to remove guess work.
- The Base Path was split into a Directory and a File Name.
- Panels were added to group options, include a panel for the node
format, items, and item formats.
Pull Request: https://projects.blender.org/blender/blender/pulls/141091
