SpineGameObject.willRender is no longer hard-coded to return true. It instead now takes a Camera parameter and performs all of the checks needed before returning. Previously, this happened during the render functions.

Author: photonstorm

plugins/spine/src/gameobject/SpineGameObject.js

@@ -242,17 +242,27 @@ var SpineGameObject = new Class({
     },
 
     /**
-     * Overrides the default Game Object method and always returns true.
-     * Rendering is decided in the renderer functions.
+     * Returns `true` if this Spine Game Object both has a skeleton and
+     * also passes the render tests for the given Camera.
      *
      * @method SpineGameObject#willRender
      * @since 3.19.0
      *
-     * @return {boolean} Always returns `true`.
+     * @return {boolean} `true` if this Game Object should be rendered, otherwise `false`.
      */
-    willRender: function ()
+    willRender: function (camera)
     {
-        return true;
+        var skeleton = this.skeleton;
+
+        if (!skeleton)
+        {
+            return false;
+        }
+
+        var GameObjectRenderMask = 15;
+        var childAlpha = skeleton.color.a;
+
+        return !(GameObjectRenderMask !== this.renderFlags || (this.cameraFilter !== 0 && (this.cameraFilter & camera.id)) || childAlpha === 0);
     },
 
     /**