Blender Git Loki

Geometry Nodes: Rename grid output UV attribute

During review of D10730 it was discovered that the "uv" name causes
issues for cycles, which uses it as a default internal data name. While
that could be fixed in the future, there was no particular reason to use
"uv" instead of "uv_map", so we use the latter instead here, which
is consistent with the lowercase naming scheme chosen for attributes.