Lanai - SwingMark performance with Metal is about 90% that of OpenGL on discrete graphics card

With Discrete graphics card enabled on MBP 16" with Retina display and macOS 10.15.6, SwingMark numbers are greater (indicating lower performance) for Metal as compared to OpenGL.


OpenGL : javax.swing.plaf.metal.MetalLookAndFeel
----------------------------------------------------------------------
Startup Time: 990
Sub-Menus = 252 (Paint = 0)
TextArea = 592 (Paint = 693)
Sliders = 643 (Paint = 502)
Lists = 367 (Paint = 493)
Table Rows = 384 (Paint = 213)
Tree = 709 (Paint = 814)
Score: 4039

Metal : javax.swing.plaf.metal.MetalLookAndFeel
------------------------------------------------------------------
Startup Time: 1238
Sub-Menus = 204 (Paint = 0)
TextArea = 637 (Paint = 693)
Sliders = 1038 (Paint = 502)
Lists = 373 (Paint = 493)
Table Rows = 477 (Paint = 213)
Tree = 1177 (Paint = 814)
Score: 5239




OpenGL : javax.swing.plaf.nimbus.NimbusLookAndFeel
---------------------------------------------------------------------------
Startup Time: 1008
Sub-Menus = 1170 (Paint = 0)
TextArea = 423 (Paint = 602)
Sliders = 923 (Paint = 502)
Lists = 352 (Paint = 493)
Table Rows = 401 (Paint = 212)
Tree = 648 (Paint = 814)
Score: 5050


Metal : javax.swing.plaf.nimbus.NimbusLookAndFeel
-----------------------------------------------------------------------
Startup Time: 1248
Sub-Menus = 1515 (Paint = 0)
TextArea = 585 (Paint = 602)
Sliders = 885 (Paint = 502)
Lists = 361 (Paint = 493)
Table Rows = 500 (Paint = 212)
Tree = 1242 (Paint = 814)
Score: 6468