Module glyph_cache 

Glyph path and cell cache for CPU text rendering. Glyph path and cell cache for CPU rendering.

Two-level cache:

1. Path cache: PathStorage objects keyed by (font, glyph, ppem). Avoids redundant path construction from font outlines.
2. Cell cache: Rasterizer cells keyed by (font, glyph, ppem, scale, sub-pixel). Avoids the expensive path→cells conversion on every frame. Cells are computed at position (0,0) and offset at render time.

Structs

CachedGlyph

Result of a cache lookup: the path plus whether it’s hinted (pixel coords) or not.

GlyphCache

Cache of built glyph paths and pre-rasterized cells.

Functions

build_path_from_contours

Build an agg PathStorage from TrueType contour data (points in F26Dot6).