#font #ttf #truetype #gfx #text

glyph_brush_draw_cache

Texture draw cache for ab_glyph

6 releases

0.1.5 Nov 13, 2021
0.1.4 Jan 21, 2021
0.1.3 Oct 17, 2020
0.1.1 Jul 11, 2020
0.1.0 May 23, 2020

#24 in Caching

Download history 2927/week @ 2021-08-12 2587/week @ 2021-08-19 2557/week @ 2021-08-26 2411/week @ 2021-09-02 3432/week @ 2021-09-09 3802/week @ 2021-09-16 3309/week @ 2021-09-23 3112/week @ 2021-09-30 2774/week @ 2021-10-07 2810/week @ 2021-10-14 3116/week @ 2021-10-21 3514/week @ 2021-10-28 3333/week @ 2021-11-04 3680/week @ 2021-11-11 3583/week @ 2021-11-18 2412/week @ 2021-11-25

13,365 downloads per month
Used in 50 crates (via glyph_brush)

Apache-2.0

65KB
890 lines

glyph_brush_draw_cache crates.io Documentation

Rasterization cache for ab_glyph used in glyph_brush.

  • Manages a texture. Draws glyphs into it and provides texture rect lookup for glyphs.
  • Automatic re-use & reordering when needed.
use glyph_brush_draw_cache::DrawCache;

// build a cache with default settings
let mut draw_cache = DrawCache::builder().build();

// queue up some glyphs to store in the cache
for (font_id, glyph) in glyphs {
    draw_cache.queue_glyph(font_id, glyph);
}

// process everything in the queue, rasterizing & uploading as necessary
draw_cache.cache_queued(&fonts, |rect, tex_data| update_texture(rect, tex_data))?;

// access a given glyph's texture position & pixel position for the texture quad
match draw_cache.rect_for(font_id, &glyph) {
    Some((tex_coords, px_coords)) => {}
    None => {/* The glyph has no outline, or wasn't queued up to be cached */}
}

Example

See the draw_cache_guts example to see how it works (run it from the top level).

cargo run --example draw_cache_guts

Dependencies

~0.6–1MB
~20K SLoC