Concurrent Chunk Management Engine (Fabric)

C2ME 0.3.0 for Minecraft 1.21.3 is released

Key highlights:

• Partially rewrites the chunk system. This release introduces a dead simple implementation of the scheduling subsystem designed to perform reliably under high load. It eliminates the need of complex workarounds caused by design pitfalls of the vanilla chunk system.
• Introduces the density function compiler. This new optimization accelerates world generation datapacks by up to 30% by compiling them into JVM bytecode, avoiding all kinds of overhead caused by interface method calls.

Brief changelog:

• perf: chunk system rewrite
• perf: native acceleration v2
• perf: density function compiler v0
• perf: optimize aquifer heavily
• perf: consolidate light update notifications
• perf: reduce GC pressure when using some datapacks
• new: add ext_render_distance_v1 protocol for 127+ RD multiplayer
• new: log changed settings on startup
• new: actually unload POI
• new: uncap render distance in VulkanMod
• fix: mitigate ghost mushroom past simulation distance
• fix: improve player ticket consistency
• fix: very rare NPE in SchedulingManager#getPriority
• change: use twice the parallelism for notickvd max concurrent loads
• change: disable density function compiler by default
• change: adjust thread count allocation