From fd30df553738a39e5ab3e2b4e81f71ee746f2c0b Mon Sep 17 00:00:00 2001
From: Sean Lilley <lilleyse@gmail.com>
Date: Thu, 6 Sep 2018 10:35:23 -0400
Subject: [PATCH] Select ancestor of empty tile that can't refine

---
 Source/Scene/Cesium3DTilesetTraversal.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Source/Scene/Cesium3DTilesetTraversal.js b/Source/Scene/Cesium3DTilesetTraversal.js
index ef5eaff01521..495ea1ef23ca 100644
--- a/Source/Scene/Cesium3DTilesetTraversal.js
+++ b/Source/Scene/Cesium3DTilesetTraversal.js
@@ -472,8 +472,12 @@ define([
             if (hasEmptyContent(tile)) {
                 // Add empty tile just to show its debug bounding volume
                 // If the tile has tileset content load the external tileset
+                // If the tile cannot refine further select its nearest loaded ancestor
                 addEmptyTile(tileset, tile, frameState);
                 loadTile(tileset, tile, frameState);
+                if (!refines) {
+                    selectDesiredTile(tileset, tile, frameState);
+                }
             } else if (add) {
                 // Additive tiles are always loaded and selected
                 selectDesiredTile(tileset, tile, frameState);