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0070fce | 1 2 3 4 5 6 7 8 9 10 11 12 13 | # Reference: https://github.com/comfyanonymous/ComfyUI
def append_dims(x, target_dims):
"""Appends dimensions to the end of a tensor until it has target_dims dimensions"""
dims_to_append = target_dims - x.ndim
if dims_to_append < 0:
raise ValueError(f"input has {x.ndim} dims but target_dims is {target_dims}, which is less")
expanded = x[(...,) + (None,) * dims_to_append]
# MPS will get inf values if it tries to index into the new axes, but detaching fixes this.
# https://github.com/pytorch/pytorch/issues/84364
return expanded.detach().clone() if expanded.device.type == "mps" else expanded
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