78ae7ec392
In very old OpenEXR version there was a limit on the channel names, which meant the pass names needed to be short like "DiffDir". Change them to be longer like "Diffuse Direct". * This breaks forward compatibility. Old Blender version will lose links when reading compositing node setups with such passes, but #146571 will fix it for 4.5 LTS. * Add-ons, scripts and compositing setups in other applications that rely on these names will also break. * The find_by_type function for render passes has also been removed, as this was already deprecated and replaced by find_by_name. * We assume spaces in the name are ok, since we have passes with them already and have not seen reports about compatibility issues. Pull Request: https://projects.blender.org/blender/blender/pulls/142731
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