maplibre/martin martin-v2.0.0-beta.3

on GitHub

Breaking changes

• The prebuilt x86_64 binaries, Debian package and Docker images require an x86-64-v3 CPU (AVX2, BMI2, FMA; Intel Haswell or AMD Excavator, 2015 or newer) (#3464). See migration.
• Some cargo features were merged to save CI time and reduce complexity. fonts, sprites and styles are now resources, hillshade, contour and geojson are now processing while mlt is always on (#3466). Only builds that pass --features or --no-default-features need to change. See migration.
• Rendered PNG tiles and static images are indexed (palette) PNGs instead of RGBA, about a quarter of the size on basemap tiles (#3456).
  Bytes and ETags change once on upgrade. Set styles.rendering.png_palette: false for the previous output, or png_palette: { max_colors: 64 } to tune the palette (2 to 256, default 128).

Added

• Rendered tiles answer {y}@{n}x.{format} for HiDPI clients such as Leaflet's {r}. styles.rendering.max_pixel_ratio (default 4) bounds n (#3453).
• styles.rendering.tile_size renders 256 or 512 px tiles (default 512) (#3457).
• Each tile worker keeps up to styles.rendering.renderers_per_worker renderers (default 8), so serving several styles no longer reloads a style on almost every request (#3454).
  Every loaded renderer holds its own memory. Lower the value, or max_pixel_ratio, to save memory.
• martin cp gets better performance via MbtilesBulkWriter (#3496).

Fixed

• PMTiles object store log lines name the source they belong to (#3502).
• martin cp without --bbox copies the source's bounds again instead of the whole world, as --help says. It has done the latter since 1.1.0 (#3489).
• martin cp refuses an inverted --bbox with an error instead of panicking (#3497).
• martin cp exits right after Ctrl+C instead of waiting out a 10 s drain timeout and losing the unsaved batch (#3498).
• Tile responses send Vary: Accept-Encoding, so shared caches such as nginx no longer hand one client's encoding to everyone (#3520).
• A tile request answers 304 when a proxy has weakened the ETag (W/"...") (#3521).
• A font stack takes each shared character from its first font. Before, MapLibre drew them in the last one (#3524).
• MLT tiles are no longer detected as MVT, which broke the catalog, the web UI inspector and Accept: application/vnd.maplibre-tile (#3486), nor as JPEG XL, which stopped MBTiles files from loading (#3522).
• Martin no longer crashes with SIGBUS, or serves the wrong bytes, when a served PMTiles archive is rewritten in place (#3487).
• A remote PMTiles source whose leaf directories moved reloads instead of failing with Invalid gzip header (#3450).

Performance

• Composite tiles (/a,b/{z}/{x}/{y}) are cached in the encoding the client receives instead of being merged and compressed on every request. CPU per request went from 2,504 µs to 72 µs on a Berlin extract. Each composite takes one more cache entry per encoding (#3523).
• Font glyph ranges are cached compressed. CPU per request dropped from 553 µs to 38 µs for gzip, and bodies are smaller (#3472).
• martin cp writes MBTiles with the bulk writer. Copying 349,525 PNG tiles into a dedup-id file went from 218 s to 76 s (#3500). MBTiles inserts also hash each tile once instead of three times (#3474).
• Local COG tiles are read from one open file handle, which cut CPU per tile from 102 µs to 35 µs for JPEG COGs (#3477).
• Decoded and re-encoded tiles carry no spare buffer capacity, which reduces tile cache memory by about 17% (#3473).
• Rendered images are encoded off the actix workers (#3460), and source resolution and Accept parsing allocate less per request (#3467, #3468).

Other

• (deps) update mlt-core to 0.19.0, hotpath (with hotpath-cloud enabled), lucide-react, maplibre-gl, the frontend's npm dependencies and the GitHub Actions (#3483, #3461, #3504, #3494, #3484, #3478, #3447, #3449)
• (ci) fmt, lint and pre-commit updates (#3491, #3476)