From 8822690cf4e9d43858c120b90f56c407413ee5d2 Mon Sep 17 00:00:00 2001
From: Tim Schaub <tim.schaub@gmail.com>
Date: Wed, 14 Nov 2018 21:04:04 +0100
Subject: [PATCH] Work with sources that have a max zoom

---
 src/ol/renderer/canvas/TileLayer.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/ol/renderer/canvas/TileLayer.js b/src/ol/renderer/canvas/TileLayer.js
index 15dcc0d46c..5ce5da9495 100644
--- a/src/ol/renderer/canvas/TileLayer.js
+++ b/src/ol/renderer/canvas/TileLayer.js
@@ -174,9 +174,9 @@ class CanvasTileLayerRenderer extends CanvasLayerRenderer {
     let width = Math.round(frameState.size[0] * tilePixelRatio);
     let height = Math.round(frameState.size[1] * tilePixelRatio);
     if (tileResolution < viewResolution) {
-      const scale = tileResolution / tileGrid.getResolution(z + 1);
-      width *= scale;
-      height *= scale;
+      // scale canvas so it covers the viewport until new tiles come it
+      width *= 1.5;
+      height *= 1.5;
     }
 
     if (rotation) {