Struct GlyphRasterizer 

pub struct GlyphRasterizer {

    workers: Arc<ThreadPool>,
    font_contexts: Arc<FontContexts>,
    dedicated_thread: Option<GlyphRasterThread>,
    fonts: FastHashSet<FontKey>,
    pending_glyph_count: usize,
    pending_glyph_jobs: usize,
    glyph_request_count: usize,
    pending_glyph_requests: FastHashMap<FontInstance, SmallVec<[GlyphKey; 16]>>,
    glyph_rx: Receiver<GlyphRasterJob>,
    glyph_tx: Sender<GlyphRasterJob>,
    fonts_to_remove: Vec<FontKey>,
    font_instances_to_remove: Vec<FontInstance>,
    enable_multithreading: bool,
    can_use_r8_format: bool,
}

Fields

workers: Arc<ThreadPool>

font_contexts: Arc<FontContexts>

dedicated_thread: Option<GlyphRasterThread>

fonts: FastHashSet<FontKey>

The current set of loaded fonts.

pending_glyph_count: usize

The current number of individual glyphs waiting in pending batches.

pending_glyph_jobs: usize

The current number of glyph request jobs that have been kicked to worker threads.

glyph_request_count: usize

The number of glyphs requested this frame.

pending_glyph_requests: FastHashMap<FontInstance, SmallVec<[GlyphKey; 16]>>

A map of current glyph request batches.

glyph_rx: Receiver<GlyphRasterJob>

glyph_tx: Sender<GlyphRasterJob>

fonts_to_remove: Vec<FontKey>

font_instances_to_remove: Vec<FontInstance>

enable_multithreading: bool

can_use_r8_format: bool

Implementations

impl GlyphRasterizer

pub fn request_glyphs<F>( &mut self, font: FontInstance, glyph_keys: &[GlyphKey], handle: F, )

where F: FnMut(&GlyphKey) -> bool,

pub fn enable_multithreading(&mut self, enable: bool)

fn flush_glyph_requests( &mut self, font: FontInstance, glyphs: SmallVec<[GlyphKey; 16]>, use_workers: bool, )

Internal method to flush a list of glyph requests to a set of worker threads, or process on this thread if there isn’t much work to do (in which case the overhead of processing these on a thread is unlikely to be a performance win).

pub fn resolve_glyphs<F, G>(&mut self, handle: F, profile: &mut G)

where F: FnMut(GlyphRasterJob, bool), G: GlyphRasterizeProfiler,

impl GlyphRasterizer

pub fn new( workers: Arc<ThreadPool>, dedicated_thread: Option<GlyphRasterThread>, can_use_r8_format: bool, ) -> Self

pub fn add_font(&mut self, font_key: FontKey, template: FontTemplate)

pub fn delete_font(&mut self, font_key: FontKey)

pub fn delete_fonts(&mut self, font_keys: &[FontKey])

pub fn delete_font_instance(&mut self, instance: &FontInstance)

pub fn prepare_font(&self, font: &mut FontInstance)

pub fn has_font(&self, font_key: FontKey) -> bool

pub fn template_has_bitmap_strikes(&self, template: &FontTemplate) -> bool

Returns whether the font template contains embedded bitmap strikes. Intended to be called once per font at add time on the render backend thread so the result can be cached for lock-free lookup during frame building. The detection consults the shared font cache directly rather than a worker FontContext, so it does not take a worker mutex.

pub fn get_glyph_dimensions( &mut self, font: &FontInstance, glyph_index: GlyphIndex, ) -> Option<GlyphDimensions>

pub fn get_glyph_index(&mut self, font_key: FontKey, ch: char) -> Option<u32>

fn remove_dead_fonts(&mut self)