Struct GlyphCache 

pub struct GlyphCache { /* private fields */ }

Per-frame glyph vertex cache shared by one [GlGfxCtx] instance.

Create once alongside GlGfxCtx::new and keep alive for the lifetime of the rendering context. Do not clear between frames.

Implementations

impl GlyphCache

pub fn new() -> Self

Create an empty cache.

pub fn get_or_insert( &mut self, font: &Font, glyph_id: u16, size: f64, ) -> Option<&CachedGlyph>

Return the cached tessellation for (font, glyph_id, size), tessellating on first access.

Returns None for glyphs with no visible outline (space, tab, etc.).

pub fn len(&self) -> usize

Number of entries (including None entries for non-outline glyphs).

pub fn is_empty(&self) -> bool

True when no glyphs have been cached yet.

pub fn clear(&mut self)

Discard all cached tessellations. Only needed when the GL context is recreated (e.g., window resize on some platforms that destroy the surface).

Trait Implementations

impl Default for GlyphCache

fn default() -> Self

Returns the “default value” for a type.