Struct FrameBudget 

pub struct FrameBudget {
    pub total_us: u64,
    pub layout_us: u64,
    pub shaping_us: u64,
    pub diff_us: u64,
    pub present_us: u64,
    pub headroom_us: u64,
}

Wall-clock time budget for a single render frame.

All values are in microseconds for sub-millisecond precision without floating point.

Fields

total_us: u64

Total frame budget (layout + shaping + diff + present).

layout_us: u64

Maximum time for the layout solver pass.

shaping_us: u64

Maximum time for text shaping (shaped or terminal path).

diff_us: u64

Maximum time for buffer-diff computation.

present_us: u64

Maximum time for the presenter (ANSI emit).

headroom_us: u64

Headroom reserved for widget render + event dispatch + IO.

Implementations

impl FrameBudget

pub const fn from_fps(fps: u32) -> u64

Budget for a target frame rate.

Returns the per-frame total in microseconds.

pub const fn as_duration(&self) -> Duration

Convert the total budget to a Duration.

pub const fn allocated(&self) -> u64

Sum of allocated sub-budgets (should equal total).

pub const fn is_consistent(&self) -> bool

Whether the sub-budgets are consistent with total.

Trait Implementations

impl Clone for FrameBudget

fn clone(&self) -> FrameBudget

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FrameBudget

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

Formats the value using the given formatter.

impl Display for FrameBudget

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

Formats the value using the given formatter.

impl PartialEq for FrameBudget

fn eq(&self, other: &FrameBudget) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for FrameBudget

impl Eq for FrameBudget

impl StructuralPartialEq for FrameBudget