From 3ed1a433fb12706f0f820fd7019b355fc25d2d6a Mon Sep 17 00:00:00 2001
From: Andreas Hocevar <andreas.hocevar@gmail.com>
Date: Tue, 24 Sep 2019 17:37:22 +0200
Subject: [PATCH] Don't attempt to render when there is no source

---
 src/ol/renderer/canvas/TileLayer.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ol/renderer/canvas/TileLayer.js b/src/ol/renderer/canvas/TileLayer.js
index 1e79f7723c..4af8c5024d 100644
--- a/src/ol/renderer/canvas/TileLayer.js
+++ b/src/ol/renderer/canvas/TileLayer.js
@@ -122,7 +122,7 @@ class CanvasTileLayerRenderer extends CanvasLayerRenderer {
    * @inheritDoc
    */
   prepareFrame(frameState) {
-    return true;
+    return !!this.getLayer().getSource();
   }
 
   /**