GetOrCreateCharacterGlyph (0x5ca2d0) is the #2 CPU hotspot at 3.65%.
The game's glyph cache uses only 4 hash buckets for ~95 ASCII chars,
causing ~24-entry chain walks with pointer chasing on every lookup.
Text measurement (99.8% of calls) re-walks these chains per character,
thousands of times per frame during UI updates.
Shadow cache: 4096-entry direct-mapped array with Murmur2 hash,
keyed on (FontObject*, charCode, param2). Cache hit returns the
cached float width via FPU ST(0) inline asm, skipping the chain
walk entirely. Gated behind ab_use_custom for A/B benchmarking.
MarcelineVQ
d9701c528d