1 files changed, 11 insertions, 10 deletions
diff --git a/src/mbgl/renderer/sources/render_raster_dem_source.cpp b/src/mbgl/renderer/sources/render_raster_dem_source.cpp
index 76716518d7..b3153622c3 100644
--- a/src/mbgl/renderer/sources/render_raster_dem_source.cpp
+++ b/src/mbgl/renderer/sources/render_raster_dem_source.cpp
@@ -32,21 +32,22 @@ void RenderRasterDEMSource::update(Immutable<style::Source::Impl> baseImpl_,
 
     enabled = needsRendering;
 
-    optional<Tileset> tileset = impl().getTileset();
-
-    if (!tileset) {
-        return;
-    }
-
-    if (tileURLTemplates != tileset->tiles) {
-        tileURLTemplates = tileset->tiles;
+    optional<Tileset> _tileset = impl().getTileset();
 
+    if (tileset != _tileset) {
+        tileset = _tileset;
+        maxzoom = tileset->zoomRange.max;
         // TODO: this removes existing buckets, and will cause flickering.
         // Should instead refresh tile data in place.
         tilePyramid.tiles.clear();
         tilePyramid.renderTiles.clear();
         tilePyramid.cache.clear();
     }
+    // Allow clearing the tile pyramid first, before the early return in case
+    //  the new tileset is not yet available or has an error in loading
+    if (!_tileset) {
+        return;
+    }
 
     tilePyramid.update(layers,
                        needsRendering,
@@ -154,8 +155,8 @@ std::vector<Feature> RenderRasterDEMSource::querySourceFeatures(const SourceQuer
     return {};
 }
 
-void RenderRasterDEMSource::onLowMemory() {
-    tilePyramid.onLowMemory();
+void RenderRasterDEMSource::reduceMemoryUse() {
+    tilePyramid.reduceMemoryUse();
 }
 
 void RenderRasterDEMSource::dumpDebugLogs() const {