Struct TextRunScratch 

pub struct TextRunScratch {
    pub used_font: FontInstance,
    pub glyph_keys_range: Range<GlyphKey>,
    pub local_rect: LayoutRect,
    pub gpu_address: GpuBufferAddress,
    pub raster_scale: f32,
    pub local_raster: bool,
}

Per-frame scratch data for a TextRun primitive. Holds the snapshot of font + glyph state captured each frame in request_resources and read by batching. Pushed once per visible TextRun per frame.

Fields

used_font: FontInstance

Per-frame font instance derived from the specified font + this frame’s transform + raster space. Carries subpixel direction, flags, and the device-space size.

glyph_keys_range: Range<GlyphKey>

Range of glyph keys allocated for this run this frame, indexing into PrimitiveFrameScratch.glyph_keys.

local_rect: LayoutRect

Normalized prim local rect for this run. .min is the run anchor: the shader transforms it to device space and adds the per-glyph device offsets. Stored here so batching emits the identical anchor in PrimitiveHeader.local_rect that request_resources used to compute those offsets.

gpu_address: GpuBufferAddress

Per-instance GPU buffer address for the color block followed by the per-glyph offset blocks (two glyphs per block). In device mode these are glyph pen positions snapped to the device grid, relative to the transformed anchor; in local-raster mode they are absolute snapped raster-space positions. Per-instance because they depend on this frame’s transform.

raster_scale: f32

Raster scale used when rasterizing the glyphs (1.0 in device mode; the local/zoom scale or oversize-clamp scale in local-raster mode). Passed to the shader so it can map raster space back to local.

local_raster: bool

Whether this run uses local-raster mode (see request_resources).

Trait Implementations

impl Debug for TextRunScratch

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Serialize for TextRunScratch

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.