[unity] `SkeletonMecanim` now provides additional parameter `Custom MixMode` which can be disabled to use recommended MixMode settings. By default the parameter is enabled to maintain current 3.8 behaviour.

CHANGELOG.md

@@ -232,6 +232,7 @@
   * Added support for **Render Separator Slots** at `SkeletonGraphic`. Render separation can be enabled directly in the `Advanced` section of the `SkeletonGraphic` Inspector, it does not require any additional components (like `SkeletonRenderSeparator` or `SkeletonPartsRenderer` for `SkeletonRenderer` components). When enabled, additional separator GameObjects will be created automatically for each separation part, and `CanvasRenderer` GameObjects re-parented to them accordingly. The separator GameObjects can be moved around and re-parented in the hierarchy according to your requirements to achieve the desired draw order within your `Canvas`. A usage example can be found in the updated `Spine Examples/Other Examples/SkeletonRenderSeparator` scene.
   * Added `SkeletonGraphicCustomMaterials` component, providing functionality to override materials and textures of a `SkeletonGraphic`, similar to `SkeletonRendererCustomMaterials`. Note: overriding materials or textures per slot is not provided due to structural limitations.
   * Added **Root Motion support** for `SkeletonAnimation`, `SkeletonMecanim` and `SkeletonGraphic` via new components `SkeletonRootMotion` and `SkeletonMecanimRootMotion`. The `SkeletonAnimation` and `SkeletonGraphic` component Inspector now provides a line `Root Motion` with `Add Component` and `Remove Component` buttons to add/remove the new `SkeletonRootMotion` component to your GameObject. The `SkeletonMecanim` Inspector detects whether root motion is enabled at the `Animator` component and adds a `SkeletonMecanimRootMotion` component automatically.
+  * `SkeletonMecanim` now provides an additional `Custom MixMode` parameter under `Mecanim Translator`. It is enabled by default in version 3.8 to maintain current behaviour, using the set `Mix Mode` for each Mecanim layer. When disabled, `SkeletonMecanim` will use the recommended `MixMode` according to the layer blend mode. Additional information can be found in the [Mecanim Translator section](http://esotericsoftware.com/spine-unity#Parameters-for-animation-blending-control) on the spine-unity documentation pages.
 
 * **Changes of default values**
   * `SkeletonMecanim`'s `Layer Mix Mode` now defaults to `MixMode.MixNext` instead of `MixMode.MixAlways`.

spine-unity/Assets/Spine/Editor/spine-unity/Editor/Components/SkeletonMecanimInspector.cs

@@ -39,6 +39,7 @@ namespace Spine.Unity.Editor {
 		public static bool mecanimSettingsFoldout;
 
 		protected SerializedProperty autoReset;
+		protected SerializedProperty useCustomMixMode;
 		protected SerializedProperty layerMixModes;
 		protected SerializedProperty layerBlendModes;
 
@@ -46,6 +47,7 @@ namespace Spine.Unity.Editor {
 			base.OnEnable();
 			SerializedProperty mecanimTranslator = serializedObject.FindProperty("translator");
 			autoReset = mecanimTranslator.FindPropertyRelative("autoReset");
+			useCustomMixMode = mecanimTranslator.FindPropertyRelative("useCustomMixMode");
 			layerMixModes = mecanimTranslator.FindPropertyRelative("layerMixModes");
 			layerBlendModes = mecanimTranslator.FindPropertyRelative("layerBlendModes");
 		}
@@ -64,9 +66,13 @@ namespace Spine.Unity.Editor {
 						"pose when an animation finishes, according to the " +
 						"animation's keyed items."));
 
-					EditorGUILayout.Space();
-					DrawLayerSettings();
-					EditorGUILayout.Space();
+					EditorGUILayout.PropertyField(useCustomMixMode, new GUIContent("Custom MixMode",
+						"When disabled, the recommended MixMode is used according to the layer blend mode. Enable to specify a custom MixMode for each Mecanim layer."));
+
+					if (useCustomMixMode.hasMultipleDifferentValues || useCustomMixMode.boolValue == true) {
+						DrawLayerSettings();
+						EditorGUILayout.Space();
+					}
 				}
 			}
 		}

spine-unity/Assets/Spine/Editor/spine-unity/Editor/Components/SkeletonRendererInspector.cs

@@ -172,11 +172,8 @@ namespace Spine.Unity.Editor {
 			if (serializedObject.ApplyModifiedProperties() || SpineInspectorUtility.UndoRedoPerformed(Event.current) ||
 				AreAnyMaskMaterialsMissing()) {
 				if (!Application.isPlaying) {
-					if (multi) {
-						foreach (var o in targets) SpineEditorUtilities.ReinitializeComponent((SkeletonRenderer)o);
-					} else {
-						SpineEditorUtilities.ReinitializeComponent((SkeletonRenderer)target);
-					}
+					foreach (var o in targets)
+						SpineEditorUtilities.ReinitializeComponent((SkeletonRenderer)o);
 					SceneView.RepaintAll();
 				}
 			}

spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonMecanim.cs

@@ -125,6 +125,7 @@ namespace Spine.Unity {
 		public class MecanimTranslator {
 			#region Inspector
 			public bool autoReset = true;
+			public bool useCustomMixMode = true;
 			public MixMode[] layerMixModes = new MixMode[0];
 			public MixBlend[] layerBlendModes = new MixBlend[0];
 			#endregion
@@ -351,14 +352,7 @@ namespace Spine.Unity {
 										out clipInfo, out nextClipInfo, out interruptingClipInfo, out interpolateWeightTo1);
 
 					MixBlend layerBlendMode = (layer < layerBlendModes.Length) ? layerBlendModes[layer] : MixBlend.Replace;
-					MixMode mode = layerMixModes[layer];
-					// Note: at additive blending it makes no sense to use constant weight 1 at a fadeout anim add1 as
-					// with override layers, so we use AlwaysMix instead to use the proper weights.
-					// AlwaysMix leads to the expected result = lower_layer + lerp(add1, add2, transition_weight).
-					if (layerBlendMode == MixBlend.Add && mode == MixMode.MixNext) {
-						mode = MixMode.AlwaysMix;
-						layerMixModes[layer] = mode;
-					}
+					MixMode mode = GetMixMode(layer, layerBlendMode);
 					if (mode == MixMode.AlwaysMix) {
 						// Always use Mix instead of Applying the first non-zero weighted clip.
 						for (int c = 0; c < clipInfoCount; c++) {
@@ -469,7 +463,24 @@ namespace Spine.Unity {
 				}
 			}
 
-		#if UNITY_EDITOR
+			private MixMode GetMixMode (int layer, MixBlend layerBlendMode) {
+				if (useCustomMixMode) {
+					MixMode mode = layerMixModes[layer];
+					// Note: at additive blending it makes no sense to use constant weight 1 at a fadeout anim add1 as
+					// with override layers, so we use AlwaysMix instead to use the proper weights.
+					// AlwaysMix leads to the expected result = lower_layer + lerp(add1, add2, transition_weight).
+					if (layerBlendMode == MixBlend.Add && mode == MixMode.MixNext) {
+						mode = MixMode.AlwaysMix;
+						layerMixModes[layer] = mode;
+					}
+					return mode;
+				}
+				else {
+					return layerBlendMode == MixBlend.Add ? MixMode.AlwaysMix : MixMode.MixNext;
+				}
+			}
+
+#if UNITY_EDITOR
 			void GetLayerBlendModes() {
 				if (layerBlendModes.Length < animator.layerCount) {
 					System.Array.Resize<MixBlend>(ref layerBlendModes, animator.layerCount);