CombineLayer, fix for Data.sparse_dim

Author: albertz

returnn/tf/layers/basic.py

@@ -6295,6 +6295,11 @@ def get_out_data_from_opts(cls, eval_locals=None, n_out=NotSpecified, out_type=N
           out_type_.pop("batch_dim_axis", None)
           out_type_.pop("feature_dim_axis", None)
           out_type_.pop("time_dim_axis", None)
+        if "dim" in out_type:
+          if out_type_.pop("sparse_dim", None):
+            out_type_["sparse"] = True
+        if "sparse" in out_type:
+          out_type_.pop("sparse_dim", None)
         out_type_.update(out_type)
       elif callable(out_type):
         def call_out_type_with_eval_locals(**out_type_kwargs):