Hi,

Thank you very much for the information, now I start to understand. It seems 
that you have done everything right. Maybe it is GDAL who thinks that the 
closest resolution comes from another zoom level when the axis swap happens. I 
am not sure yet how to test that, but I am still thinking. 

I suppose that your Mapserver and MapCache are not on the same machine, 
otherwise you could use osm_4326.gpkg directly in the mapfile LAYER-DATA 
without going through MapCache and WMTS. And you don't want to serve WMS from 
MapCache, even it should be able to do it with both versions 
https://mapserver.org/mapcache/services.html#ogc-wms-service. Is that right?

-Jukka Rahkonen-
________________________________________
Lähettäjä: Philippe Ghesquiere <[email protected]>
Lähetetty: Torstai 19. helmikuuta 2026 19.04
Vastaanottaja: Rahkonen Jukka <[email protected]>
Kopio: MapServer Users <[email protected]>
Aihe: Fwd: [MapServer-users] WMS with a GPKG-based layer : different responses, 
dependending on version (1.1.1 vs 1.3.0)

Hi Jukka,Our GPKG (osm_4326.gpkg) contains OSM tiles, with an InspireCRS84Quad 
tiling scheme. The pyramid goes from Z=0 down to Z=13.In the Mapfile, the 
layer's DATA is coming from the MapCache WMTS layer (i.e. the GPKG 
file).Mapfile excerpt :LAYER   NAME "osm_4326"   METADATA     "wms_title" 
"OpenStreet Map WMS"   END   TYPE RASTER   DATA "baselayers_gdal_osm.xml"   
PROJECTION      "init=epsg:4326"   ENDENDbaselayers_gdal_osm.xml 
content:<GDAL_WMTS>   
<GetCapabilitiesUrl>http://localhost/mapcache/wmts?request=GetCapabilities&amp;SERVICE=WMTS</GetCapabilitiesUrl>
   <Layer>osm_4326</Layer>   <Style>default</Style>   
<TileMatrixSet>WGS84</TileMatrixSet>   <DataWindow>      
<UpperLeftX>-180.0</UpperLeftX>      <UpperLeftY>90.0</UpperLeftY>      
<LowerRightX>180.0</LowerRightX>      <LowerRightY>-90.0</LowerRightY>   
</DataWindow>   <BandsCount>4</BandsCount>   <Cache/>   
<UnsafeSSL>true</UnsafeSSL>   <ZeroBlockHttpCodes>204,404</ZeroBlockHttpCodes>  
 <ZeroBlockOnServerException>true</ZeroBlockOnServerException></GDAL_WMTS>WMTS 
cache definition:<cache name="osm_cache_4326" type="sqlite3">    
<dbfile>/xxx/osm_4326.gpkg</dbfile>    <queries>       <get>select tile_data 
from tiles where tile_column=:x and tile_row=:inv_y and zoom_level=:z</get>    
</queries></cache><tileset name="osm_4326">    <cache>osm_cache_4326</cache>    
<grid restricted_extent="-180.0,-90.0,180.0,90.0">WGS84</grid>    
<format>PNG</format>    <metadata>       <title>OSM (Fond de carte) 
WGS84</title>    </metadata></tileset>PhilippeThe information in this e-mail is 
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