From d8a4b19b54cc014dfd96155b16027e8c6e6c6ae7 Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Thu, 25 Apr 2013 14:49:55 +0200
Subject: [PATCH] Render error tiles as empty

---
 src/ol/renderer/canvas/canvastilelayerrenderer.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/ol/renderer/canvas/canvastilelayerrenderer.js b/src/ol/renderer/canvas/canvastilelayerrenderer.js
index 3bb0fef9d1..7fa86fde97 100644
--- a/src/ol/renderer/canvas/canvastilelayerrenderer.js
+++ b/src/ol/renderer/canvas/canvastilelayerrenderer.js
@@ -279,11 +279,11 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
 
       tile = tileSource.getTile(z, x, y, projection);
       tileState = tile.getState();
-      if (tileState == ol.TileState.LOADED || tileState == ol.TileState.EMPTY) {
+      if (tileState == ol.TileState.LOADED ||
+          tileState == ol.TileState.EMPTY ||
+          tileState == ol.TileState.ERROR) {
         tilesToDrawByZ[z][tile.tileCoord.toString()] = tile;
         continue;
-      } else if (tileState == ol.TileState.ERROR) {
-        continue;
       }
 
       allTilesLoaded = false;
@@ -335,7 +335,9 @@ ol.renderer.canvas.TileLayer.prototype.renderFrame =
           x = tileSize.width * (tile.tileCoord.x - canvasTileRange.minX);
           y = tileSize.height * (canvasTileRange.maxY - tile.tileCoord.y);
           tileState = tile.getState();
-          if (tileState == ol.TileState.EMPTY || !opaque) {
+          if (tileState == ol.TileState.EMPTY ||
+              tileState == ol.TileState.ERROR ||
+              !opaque) {
             context.clearRect(x, y, tileSize.width, tileSize.height);
           }
           if (tileState == ol.TileState.LOADED) {