In recent changes the viewport_quality setting was not working what users expected. This change will separate the anti-aliasing method that is being used. We now have three settings: * scene.display.render_aa: Will be used during `Render Image`. * scene.display.viewport_aa: Will be used during `Viewport Render Image`. * userpref.viewport_aa: Will be used in the 3d view. The viewport_quality setting has been replaced by the viewport_aa setting as it was the only thing in currently controlled. Reviewed By: brecht Maniphest Tasks: T64132 Differential Revision: https://developer.blender.org/D4828