gfauto always uses binding 0 when making a buffer for a compute shader

[afd]

Line 663 of amber_converter.py has:

       result += f"  BIND BUFFER {ssbo_name} AS storage DESCRIPTOR_SET 0 BINDING 0\n"

This always uses binding 0, even if the JSON data specifies a different binding, as in the following:

{
  "$compute": {
    "buffer": {
      "fields": [ { "type": "uint", "data": [0] } ],
      "binding": 1
    },
    "num_groups": [1, 1, 1]
  }
}