From 43f313cb18dd810189c7099e3d91fae98f3a593a Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Tue, 23 Apr 2013 22:18:51 +0200
Subject: [PATCH] Scale tile queue according to number of sources

---
 src/ol/map.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/ol/map.js b/src/ol/map.js
index cfa2e6d613..ebe0ade07d 100644
--- a/src/ol/map.js
+++ b/src/ol/map.js
@@ -656,6 +656,9 @@ ol.Map.prototype.handlePostRender = function() {
         maxNewLoads = 2;
       }
     }
+    var tileSourceCount = goog.object.getCount(frameState.wantedTiles);
+    maxTotalLoading *= tileSourceCount;
+    maxNewLoads *= tileSourceCount;
     if (tileQueue.getTilesLoading() < maxTotalLoading) {
       tileQueue.reprioritize(); // FIXME only call if view has changed
       tileQueue.loadMoreTiles(maxTotalLoading, maxNewLoads);