cadrgtsecond/mosham - Change NOSXMSCMJV75LYKAIRD4FG4LFPYQ4CI5SIKGQC7MEYUEAB7X7NWAC

Use rustybuzz::shape_with_plan for speedup in shaping

Created by cadrgtsecond on December 27, 2025

NOSXMSCMJV75LYKAIRD4FG4LFPYQ4CI5SIKGQC7MEYUEAB7X7NWAC

Dependencies

In channels

main

Change contents

Replacement in src/render.rs at line 5 [3.34]

B:BD[3.159] → [2.0:45]

use rustybuzz::{GlyphBuffer, UnicodeBuffer};

[3.159]

[3.189]

use rustybuzz::{Direction, GlyphBuffer, Language, Script, ShapePlan, UnicodeBuffer};

Insertion in src/render.rs at line 9 [3.34]

[2.87]

[3.315]


type GlyphIndex = u16;
type FontIndex = usize;
struct FontData {
    // This is referred by rb_face
    #[allow(unused)]
    data: Vec<u8>,
    rb_face: rustybuzz::Face<'static>,
    fd_face: fontdue::Font,
}

Insertion in src/render.rs at line 24 [3.34]

[2.203]

    plans: HashMap<(FontIndex, Direction, Script, Option<Language>), ShapePlan>,

Deletion in src/render.rs at line 35 [3.34]

∅:D[2.271] → [3.488:538]

B:BD[3.488] → [3.488:538]

B:BD[3.538] → [3.538:699]

}
type GlyphIndex = u16;
type FontIndex = usize;
struct FontData {
    // This is referred by rb_face
    #[allow(unused)]
    data: Vec<u8>,
    rb_face: rustybuzz::Face<'static>,
    fd_face: fontdue::Font,

Insertion in src/render.rs at line 73 [3.34]
[3.2056]
[4.21]
```
            plans: HashMap::new(),
```

Insertion in src/render.rs at line 91 [3.34]

[3.2277]

    fn shape(&mut self, font: FontIndex, ubuf: UnicodeBuffer) -> GlyphBuffer {
        let direction = match ubuf.direction() {
            Direction::Invalid => Direction::LeftToRight,
            dir => dir,
        };
        let script = ubuf.script();
        let language = ubuf.language();
        let face = &self.faces[font].rb_face;
        let plan = self
            .plans
            .entry((font, direction, script, language.clone()))
            .or_insert_with(|| {
                ShapePlan::new(&face, direction, Some(script), language.as_ref(), &[])
            });
        rustybuzz::shape_with_plan(face, plan, ubuf)
    }

Replacement in src/render.rs at line 232 [3.34]

B:BD[3.5706] → [2.4336:4433]

                let glyph_buffer = rustybuzz::shape(&self.fonts.faces[font].rb_face, &[], ubuf);

[3.5706]

[2.4433]

                let glyph_buffer = self.fonts.shape(font, ubuf);

Replacement in src/render.rs at line 244 [3.34]

B:BD[2.4872] → [2.4872:4965]

            let glyph_buffer = rustybuzz::shape(&self.fonts.faces[font].rb_face, &[], ubuf);

[2.4872]

[2.4965]

            let glyph_buffer = self.fonts.shape(font, ubuf);

Replacement in src/render.rs at line 255 [3.34]

B:BD[2.5382] → [2.5382:5479]

                let glyph_buffer = rustybuzz::shape(&self.fonts.faces[font].rb_face, &[], ubuf);

[2.5382]

[2.5479]

                let glyph_buffer = self.fonts.shape(font, ubuf);