Enum BarrierRequirement 

pub enum BarrierRequirement {
    Global,
    PaddedLocal {
        top: Px,
        right: Px,
        bottom: Px,
        left: Px,
    },
    Absolute(PxRect),
}

Defines the sampling requirements for a rendering command that needs a barrier.

Variants

Global

The command needs to sample from the entire previously rendered scene. This will cause a full-screen texture copy.

PaddedLocal

The command needs to sample from a region relative to its own bounding box. The padding value extends the sampling area beyond the component’s own size. For example, a padding of 10.0 on all sides means the component can access pixels up to 10px outside its own boundaries.

Fields

top: Px

right: Px

bottom: Px

left: Px

Absolute(PxRect)

The command needs to sample from a specific, absolute region of the screen.

Implementations

impl BarrierRequirement

pub const ZERO_PADDING_LOCAL: Self

pub const fn uniform_padding_local(padding: Px) -> Self

Creates a PaddedLocal barrier requirement with uniform padding on all sides.

Trait Implementations

impl Clone for BarrierRequirement

fn clone(&self) -> BarrierRequirement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BarrierRequirement

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

Formats the value using the given formatter.

impl PartialEq for BarrierRequirement

fn eq(&self, other: &BarrierRequirement) -> 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 BarrierRequirement

impl StructuralPartialEq for BarrierRequirement