World base map overlay to fix slow mapsforge rendering on lower zooms
Problem with vector maps, as we all know, is that they render horribly slow on lower zooms. Zooming out a bit, moving to a new place and zooming back in is really not a nice experience in Locus.
I recently had the idea to "fix" this by using an offline sqlite world map (eg zooms 0 to 8) as "overlay" for vector maps. Because the overlay renders independently from the vector map, it would appear "immediately" when zooming out.
However, I cannot seem to find the correct "blend mode" setting for this. What I want:
Render the overlay at 100% (first).
Render each vector map tile at 100% on top of the overlay tile. Basically, the vector map tiles replace the overlay tiles when finished.
Do NOT render the white "Loading..." text on top of the overlay map.
Is this possible with current Locus? I think together with auto-loading of vector maps, it might lead to a very smooth "zoom out/pan/zoom in" experience.