@oguyot_c2c @erilem I don't mind depending on another communautary project, if our voice can be heard. I'm afraid about 2D assumptions, yes! Also even for sources, we already have difficulties, because we use raster source as DEM information. For COGs, last time we checked, openlayers did process them too much for us (especially COGS with one 32 bits band if I remember correctly?)