Add an opts override for DirectML.

modules/dml/__init__.py

@@ -3,6 +3,7 @@ import torch
 import torch_directml # pylint: disable=import-error
 import modules.dml.hijack
 import modules.dml.amp as amp
+from modules.dml.opts import override_opts
 
 from .optimizer.unknown import UnknownOptimizer
 
@@ -43,6 +44,8 @@ class DirectML():
         DirectML._is_autocast_enabled = enabled
 
 
-# Alternative of torch.cuda for DirectML.
 DirectML.amp = amp
+# Alternative of torch.cuda for DirectML.
 torch.dml = DirectML
+
+override_opts()

modules/dml/opts.py

@@ -0,0 +1,5 @@
+from modules import shared
+
+def override_opts():
+    if shared.cmd_opts.backend.lower() == "diffusers":
+        shared.opts.diffusers_generator_device = "cpu" # DirectML does not support torch.Generator API.