Changelog

Performance

Full renders are much faster. In our benchmark with default settings, a full render on Paper took 14.03 s instead of 38.59 s, a 2.75× speedup, using half as many render workers and producing identical output (Ryzen 9 5950X, 288,369 chunks, Minecraft 26.3). (#601, #610)

• Rewrote the rendering pipeline: renders work through a bounded number of regions at a time, scanning runs on a separate CPU worker pool, chunk and neighbour loads are planned ahead and shared, and region images are saved by multiple writers (#610)
• Read unloaded chunks directly from region files off the main thread on Paper, and on Fabric and NeoForge with the Moonrise mod installed (recommended) (#601)
• Skip biome blending when every position in the blend window is the same biome

Changed

• Render settings are now set per render mode under map.render.<full|radius|background>, and image saving is configured under map.image-saving. Existing configs are migrated automatically (config version 3)
• Default render worker counts are lower on machines with more than 8 threads. Configs using the old automatic default (-1) migrate to default and get the new counts
• The default max-chunks-per-interval for background renders is raised from 1024 to 2048. Configs still set to 1024 are migrated to 2048; other values are kept
• Radius renders now resume after a restart, like full renders; resumed renders skip chunks that are no longer visible
• Visibility limits, the world border and render settings are captured when a render starts
• Queued image saves are always completed at shutdown instead of being dropped after 5 seconds
• Region scanning log messages now name the world, and image read/save errors name the file; the could-not-*-region locale keys are now could-not-*-image
• Removed squaremap-client support
• Mark Moonrise versions older than 1.0.1 as incompatible on Fabric and NeoForge (Moonrise is still optional)
• Update dependencies

Fixed

• Fix world configs retaining worlds unloaded at runtime #600
• Fix partially upgraded terrain being rendered for retrogen chunks (#601)
• Fix terrain shading next to fluids (#604)
• Fix inconsistent shading across chunk and region boundaries in all render types
• Fix the first run limiting rendering to the world border even though the generated config showed the limit as disabled
• Fix full renders failing for dimensions that have never saved a chunk
• Fix /squaremap resetmap leaving tiles from in-progress renders and queued image saves in the reset map. It now refuses to run while a full or radius render is in progress
• Fix markers.json and other web files not being rewritten after a map reset when using an external web server
• Fix unreadable render progress being warned about on every startup
• Fix background renders losing claimed chunks in some cases, such as when stopped while planning
• Fix progress logging: the ETA no longer wraps after 24 hours, a final line is logged when a render ends, and re-enabling logging mid-render works
• Sponge: fix commands failing to register