Enum SystemStage 

pub enum SystemStage {
    Startup,
    AssetSync,
    AssetSyncDeps,
    PreUpdate,
    Update,
    PostUpdate,
    PreRender,
    Render,
    PostRender,
}

Determines when during a frame a system is executed.

Startup runs on every tick until a system on it returns Some(()) (then never again). Systems returning Option<()> are automatically “once” — they retry each tick until they succeed.

Variants

Startup

Run-once startup systems — any system added here that returns Option<()> runs until it returns Some(()), then is permanently retired.

AssetSync

Upload CPU-side source assets to the GPU backend.

AssetSyncDeps

Construct GPU resources and upload assets that depend on other processed assets.

PreUpdate

Before the main update.

Update

Main game-logic update.

PostUpdate

After the main update.

PreRender

Prepare rendering data and poll for the GPU backend.

Render

Issue draw calls.

PostRender

Cleanup or post-processing after rendering.

Trait Implementations

impl Clone for SystemStage

fn clone(&self) -> SystemStage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SystemStage

impl Debug for SystemStage

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

Formats the value using the given formatter.

impl Eq for SystemStage

impl Hash for SystemStage

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SystemStage

fn cmp(&self, other: &SystemStage) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SystemStage

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for SystemStage

fn partial_cmp(&self, other: &SystemStage) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for SystemStage