Struct FlushCommands 

pub struct FlushCommands<'w> { /* private fields */ }

A system parameter that can be used to explicitly flush pending command buffers to the render queue. This is typically not necessary, as command buffers are automatically flushed at the end of each render system. However, in some cases it may be useful to flush command buffers earlier.

Implementations

impl<'w> FlushCommands<'w>

pub fn flush(&mut self)

Flushes all pending command buffers to the render queue.

Trait Implementations

impl SystemParam for FlushCommands<'_>

type State = FetchState

Used to store data which persists across invocations of a system.

type Item<'w, 's> = FlushCommands<'w>

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes.

fn init_state(world: &mut World) -> Self::State

Creates a new instance of this param’s State.

fn init_access( state: &Self::State, system_meta: &mut SystemMeta, component_access_set: &mut FilteredAccessSet, world: &mut World, )

Registers any World access used by this SystemParam.

fn apply(state: &mut Self::State, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations stored in this SystemParam’s state. This is used to apply Commands during ApplyDeferred.

fn queue( state: &mut Self::State, system_meta: &SystemMeta, world: DeferredWorld<'_>, )

Queues any deferred mutations to be applied at the next ApplyDeferred.

unsafe fn get_param<'w, 's>( state: &'s mut Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, change_tick: Tick, ) -> Result<Self::Item<'w, 's>, SystemParamValidationError>

Creates a parameter to be passed into a SystemParamFunction.

impl<'w, 's> ReadOnlySystemParam for FlushCommands<'w>

where ResMut<'w, PendingCommandBuffers>: ReadOnlySystemParam, Res<'w, RenderQueue>: ReadOnlySystemParam,