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Arbitrary projections in deck.gl will help a lot with regional and polar data. Is the reprojection done per tile on the GPU, or are tiles resampled up front?

For vector data, reprojection is done per coordinate on CPU with proj4.js. For raster data, reprojection is mostly done on the GPU, in the same way that deck.gl-raster already handles reprojection. See developmentseed.org/deck.gl-rast... for an explainer of how the GPU-based warping works

Thanks, that explainer is handy. CPU for vector coords and GPU for raster warping is a sensible split. Does the GPU warp hold up near the poles, or do you subdivide the mesh more there?