From 7921bcf255adc15681330dc30da77d066d964d99 Mon Sep 17 00:00:00 2001
From: Eugene Maksymenko <maxigene@gmail.com>
Date: Mon, 15 Aug 2022 19:39:26 +0300
Subject: [PATCH] Fix tiled elevation coverage absent resource list analysis
 during retrieve.

---
 src/globe/TiledElevationCoverage.js | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/src/globe/TiledElevationCoverage.js b/src/globe/TiledElevationCoverage.js
index 80f23e59a..202eb0a22 100644
--- a/src/globe/TiledElevationCoverage.js
+++ b/src/globe/TiledElevationCoverage.js
@@ -571,18 +571,15 @@ define(['../util/AbsentResourceList',
 
         // Intentionally not documented.
         TiledElevationCoverage.prototype.retrieveTileImage = function (tile) {
-            if (this.currentRetrievals.indexOf(tile.tileKey) < 0) {
-
-                if (this.currentRetrievals.length > this.retrievalQueueSize) {
-                    return;
-                }
+            if (this.currentRetrievals.length < this.retrievalQueueSize
+                && this.currentRetrievals.indexOf(tile.tileKey) < 0
+                && !this.absentResourceList.isResourceAbsent(tile.tileKey)) {
 
                 var url = this.resourceUrlForTile(tile, this.retrievalImageFormat),
                     xhr = new XMLHttpRequest(),
                     elevationCoverage = this;
 
-                if (!url)
-                    return;
+                if (!url) return;
 
                 xhr.open("GET", url, true);
                 xhr.responseType = 'arraybuffer';