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Mojo function

bc_frag_coord

def bc_frag_coord(lane: Int, i: Int) -> IndexList[Int(2)]

(row, col) in the 16x32 B/C tile for this lane's element i (0..15).

Args:

lane (Int): Simdgroup lane index in [0, 32); determines the lane's base (row, col) in the 16x32 B/C tile.
i (Int): B/C-fragment element index in [0, 16); selects which of this lane's 16 held B/C elements to map to (row, col).

Returns:

IndexList[Int(2)]