Struct PrepareTimings 

pub struct PrepareTimings {
    pub layout: Duration,
    pub layout_intrinsic_cache: LayoutIntrinsicCacheStats,
    pub layout_prune: LayoutPruneStats,
    pub draw_ops: Duration,
    pub draw_ops_culled_text_ops: u64,
    pub paint: Duration,
    pub paint_culled_ops: u64,
    pub gpu_upload: Duration,
    pub snapshot: Duration,
    pub text_layout_cache: TextLayoutCacheStats,
}

Per-stage CPU timing inside each backend’s prepare. Cheap to compute (a handful of Instant::now() calls per frame) and useful for finding the dominant cost when frame budget is tight.

Stages:

• layout: layout pass + focus order sync + state apply + animation tick.
• draw_ops: tree → DrawOp[] resolution.
• paint: paint-stream loop (quad packing + text shaping via cosmic-text).
• gpu_upload: backend-side instance buffer write + atlas flush + frame uniforms.
• snapshot: cloning the laid-out tree for next-frame hit-testing.

Fields

layout: Duration

layout_intrinsic_cache: LayoutIntrinsicCacheStats

layout_prune: LayoutPruneStats

draw_ops: Duration

draw_ops_culled_text_ops: u64

paint: Duration

paint_culled_ops: u64

gpu_upload: Duration

snapshot: Duration

text_layout_cache: TextLayoutCacheStats

Trait Implementations

impl Clone for PrepareTimings

fn clone(&self) -> PrepareTimings

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PrepareTimings

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

Formats the value using the given formatter.

impl Default for PrepareTimings

fn default() -> PrepareTimings

Returns the “default value” for a type.

impl Copy for PrepareTimings