Struct PlacedGlyph 

pub struct PlacedGlyph {
    pub glyph: CachedGlyph,
    pub x: i32,
    pub y: i32,
    pub key: u64,
    pub color_rgba: Option<Arc<ColorGlyph>>,
}

One glyph placed by layout_glyphs: the cached rasterization plus its top-left pixel position and a stable atlas key (D109/Phase 27 Step 4).

Fields

glyph: CachedGlyph

x: i32

Top-left of the glyph bitmap, physical px.

y: i32

key: u64

Stable across frames: px_bits << 32 | char << 1 | wants_bold. Face routing is deterministic per (char, bold), so this fully identifies the rasterization without exposing FaceKey.

color_rgba: Option<Arc<ColorGlyph>>

Some for a color-emoji glyph (Phase 32 Step 4) — glyph above is then a cheap zero-size placeholder (never read) and consumers must blit this RGBA bitmap directly instead of using glyph’s coverage mask. Reuses the same premultiplied-RGBA-quad pipeline DrawCommand::BlitRgba (the Image widget) already established in both the CPU and GPU-shapes paths, rather than adding a second coverage-atlas page — real color rendering with no new render primitive.