124c0f1692
The Blender config.ocio does not have any rules, but custom ones can. The default file rule is ignored if default_byte or default_float roles exist. These roles are Blender specific, so would not be found in a typical OCIO config. But when they are set appropriately, they help provide better default guesses than what is possible with standard OCIO rules. Pull Request: https://projects.blender.org/blender/blender/pulls/136516