Cache mesh AABB when modified by skeleton and update instance AABB when

skeleton changes

drivers/gles3/storage/mesh_storage.cpp

@@ -528,7 +528,7 @@ AABB MeshStorage::mesh_get_aabb(RID p_mesh, RID p_skeleton) {
 
 	Skeleton *skeleton = skeleton_owner.get_or_null(p_skeleton);
 
-	if (!skeleton || skeleton->size == 0) {
+	if (!skeleton || skeleton->size == 0 || mesh->skeleton_aabb_version == skeleton->version) {
 		return mesh->aabb;
 	}
 
@@ -622,6 +622,8 @@ AABB MeshStorage::mesh_get_aabb(RID p_mesh, RID p_skeleton) {
 		}
 	}
 
+	mesh->aabb = aabb;
+	mesh->skeleton_aabb_version = skeleton->version;
 	return aabb;
 }
 

drivers/gles3/storage/mesh_storage.h

@@ -126,6 +126,7 @@ struct Mesh {
 
 	AABB aabb;
 	AABB custom_aabb;
+	uint64_t skeleton_aabb_version = 0;
 
 	Vector<RID> material_cache;
 

servers/rendering/renderer_rd/storage_rd/mesh_storage.cpp

@@ -715,6 +715,8 @@ AABB MeshStorage::mesh_get_aabb(RID p_mesh, RID p_skeleton) {
 		}
 	}
 
+	mesh->aabb = aabb;
+
 	mesh->skeleton_aabb_version = skeleton->version;
 	return aabb;
 }

servers/rendering/renderer_scene_cull.h

@@ -476,6 +476,7 @@ public:
 			Instance *instance = (Instance *)tracker->userdata;
 			switch (p_notification) {
 				case Dependency::DEPENDENCY_CHANGED_SKELETON_DATA:
+				case Dependency::DEPENDENCY_CHANGED_SKELETON_BONES:
 				case Dependency::DEPENDENCY_CHANGED_AABB: {
 					singleton->_instance_queue_update(instance, true, false);
 
@@ -491,8 +492,7 @@ public:
 				case Dependency::DEPENDENCY_CHANGED_REFLECTION_PROBE: {
 					singleton->_instance_queue_update(instance, true, true);
 				} break;
-				case Dependency::DEPENDENCY_CHANGED_MULTIMESH_VISIBLE_INSTANCES:
-				case Dependency::DEPENDENCY_CHANGED_SKELETON_BONES: {
+				case Dependency::DEPENDENCY_CHANGED_MULTIMESH_VISIBLE_INSTANCES: {
 					//ignored
 				} break;
 				case Dependency::DEPENDENCY_CHANGED_LIGHT_SOFT_SHADOW_AND_PROJECTOR: {