Struct TextDrawCall 

pub struct TextDrawCall {
    pub vertices: Vec<TextVertex>,
    pub indices: Vec<u16>,
    pub atlas_slot: usize,
    pub clip_rect: Option<[f32; 4]>,
    pub layer: i32,
}

One text draw call: quads for all visible characters sharing one atlas texture.

Fields

vertices: Vec<TextVertex>

One quad (4 vertices, 6 indices) per character.

indices: Vec<u16>

Triangle indices into vertices.

atlas_slot: usize

Index into the backend’s text atlas texture array.

clip_rect: Option<[f32; 4]>

Optional clip rectangle in window pixels [x, y, width, height]. When set, the backend scissors this call to the rect so a scrollable UI panel’s off-band rows do not bleed over its chrome. None draws unclipped.

layer: i32

Draw layer for overlay ordering: calls are stable-sorted by this (ascending, so higher draws on top) before submission when a HudLayers override is active. 0 for everything by default, which leaves insertion order intact.