Does mapnik support pyramids/overviews?

[Marcos_Dione]

@yvecai

You can compute Hillshading in 4326, then reproject (precompute) a big raster in webmercator and use it to render

Computationally is not that different, visually yes. OTOH, my issue is resizing for lower (<9) zooms, not the processing itself. I can do that in less than an hour.