Font fallbacks.

TestGame/TestGame.cs

@@ -54,6 +54,8 @@ public class TestGame : Game
         {
             throw new Exception("Failed to load emitter settings!");
         }
+
+        _defaultFontSet = new([_font, _jpFont]);
     }
 
     protected override void Ready()
@@ -78,7 +80,7 @@ public class TestGame : Game
 
         if (Input.IsActionPressed("accept"))
         {
-            _container.AddChild(new Label("こんにちは世界！", _jpFont));
+            _container.AddChild(new Label("こんにちは世界！", _defaultFontSet));
         }
 
         if (Input.IsActionPressed("cancel") && _container.Children.Count != 0)
@@ -126,6 +128,9 @@ public class TestGame : Game
     private ResourceRef<ParticleEmitterSettingsResource> _fireEffect;
     private ResourceRef<Font> _font;
     private ResourceRef<Font> _jpFont;
+
+    private FontSet _defaultFontSet;
+
     private ResourceRef<Sound> _sound;
     private ResourceRef<Texture2d> _icon;