Struct bevy_render::render_asset::RenderAssetUsages

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pub struct RenderAssetUsages(/* private fields */);
Expand description

Defines where the asset will be used.

If an asset is set to the RENDER_WORLD but not the MAIN_WORLD, the asset will be unloaded from the asset server once it’s been extracted and prepared in the render world.

Unloading the asset saves on memory, as for most cases it is no longer necessary to keep it in RAM once it’s been uploaded to the GPU’s VRAM. However, this means you can no longer access the asset from the CPU (via the Assets<T> resource) once unloaded (without re-loading it).

If you never need access to the asset from the CPU past the first frame it’s loaded on, or only need very infrequent access, then set this to RENDER_WORLD. Otherwise, set this to RENDER_WORLD | MAIN_WORLD.

If you have an asset that doesn’t actually need to end up in the render world, like an Image that will be decoded into another Image asset, use MAIN_WORLD only.

§Platform-specific

On Wasm, it is not possible for now to free reserved memory. To control memory usage, load assets in sequence and unload one before loading the next. See this discussion about memory management for more details.

Implementations§

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impl RenderAssetUsages

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pub const MAIN_WORLD: Self = _

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pub const RENDER_WORLD: Self = _

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impl RenderAssetUsages

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pub const fn empty() -> Self

Get a flags value with all bits unset.

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pub const fn all() -> Self

Get a flags value with all known bits set.

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pub const fn bits(&self) -> u8

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

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pub const fn from_bits(bits: u8) -> Option<Self>

Convert from a bits value.

This method will return None if any unknown bits are set.

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pub const fn from_bits_truncate(bits: u8) -> Self

Convert from a bits value, unsetting any unknown bits.

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pub const fn from_bits_retain(bits: u8) -> Self

Convert from a bits value exactly.

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pub fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn’t correspond to any named flag.

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pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

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pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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pub const fn intersects(&self, other: Self) -> bool

Whether any set bits in a source flags value are also set in a target flags value.

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pub const fn contains(&self, other: Self) -> bool

Whether all set bits in a source flags value are also set in a target flags value.

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pub fn insert(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

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pub fn remove(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won’t truncate other, but the ! operator will.

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pub fn toggle(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

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pub fn set(&mut self, other: Self, value: bool)

Call insert when value is true or remove when value is false.

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pub const fn intersection(self, other: Self) -> Self

The bitwise and (&) of the bits in two flags values.

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pub const fn union(self, other: Self) -> Self

The bitwise or (|) of the bits in two flags values.

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pub const fn difference(self, other: Self) -> Self

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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pub const fn symmetric_difference(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in two flags values.

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pub const fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

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impl RenderAssetUsages

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pub const fn iter(&self) -> Iter<RenderAssetUsages>

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

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pub const fn iter_names(&self) -> IterNames<RenderAssetUsages>

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

Trait Implementations§

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impl Binary for RenderAssetUsages

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

Formats the value using the given formatter.
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impl BitAnd for RenderAssetUsages

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

The bitwise and (&) of the bits in two flags values.

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type Output = RenderAssetUsages

The resulting type after applying the & operator.
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impl BitAndAssign for RenderAssetUsages

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fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in two flags values.

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impl BitOr for RenderAssetUsages

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fn bitor(self, other: RenderAssetUsages) -> Self

The bitwise or (|) of the bits in two flags values.

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type Output = RenderAssetUsages

The resulting type after applying the | operator.
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impl BitOrAssign for RenderAssetUsages

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fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in two flags values.

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impl BitXor for RenderAssetUsages

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

The bitwise exclusive-or (^) of the bits in two flags values.

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type Output = RenderAssetUsages

The resulting type after applying the ^ operator.
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impl BitXorAssign for RenderAssetUsages

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fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in two flags values.

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impl Clone for RenderAssetUsages

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fn clone(&self) -> RenderAssetUsages

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for RenderAssetUsages

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

Formats the value using the given formatter. Read more
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impl Default for RenderAssetUsages

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fn default() -> Self

Returns the default render asset usage flags: RenderAssetUsages::MAIN_WORLD | RenderAssetUsages::RENDER_WORLD

This default configuration ensures the asset persists in the main world, even after being prepared for rendering.

If your asset does not change, consider using RenderAssetUsages::RENDER_WORLD exclusively. This will cause the asset to be unloaded from the main world once it has been prepared for rendering. If the asset does not need to reach the render world at all, use RenderAssetUsages::MAIN_WORLD exclusively.

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impl<'de> Deserialize<'de> for RenderAssetUsages

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Extend<RenderAssetUsages> for RenderAssetUsages

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fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)

The bitwise or (|) of the bits in each flags value.

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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)
Reserves capacity in a collection for the given number of additional elements. Read more
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impl Flags for RenderAssetUsages

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const FLAGS: &'static [Flag<RenderAssetUsages>] = _

The set of defined flags.
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type Bits = u8

The underlying bits type.
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fn bits(&self) -> u8

Get the underlying bits value. Read more
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fn from_bits_retain(bits: u8) -> RenderAssetUsages

Convert from a bits value exactly.
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fn empty() -> Self

Get a flags value with all bits unset.
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fn all() -> Self

Get a flags value with all known bits set.
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fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value. Read more
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fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.
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fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set. Read more
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fn iter(&self) -> Iter<Self>

Yield a set of contained flags values. Read more
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fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values. Read more
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fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.
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fn is_all(&self) -> bool

Whether all known bits in this flags value are set.
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fn intersects(&self, other: Self) -> bool
where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.
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fn contains(&self, other: Self) -> bool
where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.
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fn insert(&mut self, other: Self)
where Self: Sized,

The bitwise or (|) of the bits in two flags values.
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fn remove(&mut self, other: Self)
where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!). Read more
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fn toggle(&mut self, other: Self)
where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.
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fn set(&mut self, other: Self, value: bool)
where Self: Sized,

Call Flags::insert when value is true or Flags::remove when value is false.
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fn intersection(self, other: Self) -> Self

The bitwise and (&) of the bits in two flags values.
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fn union(self, other: Self) -> Self

The bitwise or (|) of the bits in two flags values.
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fn difference(self, other: Self) -> Self

The intersection of a source flags value with the complement of a target flags value (&!). Read more
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fn symmetric_difference(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in two flags values.
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fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.
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impl FromIterator<RenderAssetUsages> for RenderAssetUsages

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fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self

The bitwise or (|) of the bits in each flags value.

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impl FromReflect for RenderAssetUsages
where Self: Any + Send + Sync,

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fn from_reflect(reflect: &dyn Reflect) -> Option<Self>

Constructs a concrete instance of Self from a reflected value.
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fn take_from_reflect( reflect: Box<dyn Reflect> ) -> Result<Self, Box<dyn Reflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails. Read more
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impl GetTypeRegistration for RenderAssetUsages
where Self: Any + Send + Sync,

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fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.
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fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type. Read more
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impl Hash for RenderAssetUsages

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl IntoIterator for RenderAssetUsages

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type Item = RenderAssetUsages

The type of the elements being iterated over.
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type IntoIter = Iter<RenderAssetUsages>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
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impl LowerHex for RenderAssetUsages

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

Formats the value using the given formatter.
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impl Not for RenderAssetUsages

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fn not(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.

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type Output = RenderAssetUsages

The resulting type after applying the ! operator.
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impl Octal for RenderAssetUsages

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

Formats the value using the given formatter.
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impl PartialEq for RenderAssetUsages

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PublicFlags for RenderAssetUsages

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type Primitive = u8

The type of the underlying storage.
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type Internal = InternalBitFlags

The type of the internal field on the generated flags type.
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impl Reflect for RenderAssetUsages
where Self: Any + Send + Sync,

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fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value. Read more
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fn into_any(self: Box<Self>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
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fn as_any(&self) -> &dyn Any

Returns the value as a &dyn Any.
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fn as_any_mut(&mut self) -> &mut dyn Any

Returns the value as a &mut dyn Any.
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fn into_reflect(self: Box<Self>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
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fn as_reflect(&self) -> &dyn Reflect

Casts this type to a reflected value.
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fn as_reflect_mut(&mut self) -> &mut dyn Reflect

Casts this type to a mutable reflected value.
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fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
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fn try_apply(&mut self, value: &dyn Reflect) -> Result<(), ApplyError>

Tries to apply a reflected value to this value. Read more
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fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
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fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
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fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type. Read more
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fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
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fn reflect_owned(self: Box<Self>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
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fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type). Read more
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fn reflect_partial_eq(&self, value: &dyn Reflect) -> Option<bool>

Returns a “partial equality” comparison result. Read more
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fn debug(&self, f: &mut Formatter<'_>) -> Result

Debug formatter for the value. Read more
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fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value. Read more
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fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value. Read more
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fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
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impl Serialize for RenderAssetUsages

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Sub for RenderAssetUsages

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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type Output = RenderAssetUsages

The resulting type after applying the - operator.
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impl SubAssign for RenderAssetUsages

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fn sub_assign(&mut self, other: Self)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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impl TypePath for RenderAssetUsages
where Self: Any + Send + Sync,

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fn type_path() -> &'static str

Returns the fully qualified path of the underlying type. Read more
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fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type. Read more
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fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous. Read more
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fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous. Read more
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fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more
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impl Typed for RenderAssetUsages
where Self: Any + Send + Sync,

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fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.
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impl UpperHex for RenderAssetUsages

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

Formats the value using the given formatter.
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impl Copy for RenderAssetUsages

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impl Eq for RenderAssetUsages

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impl StructuralPartialEq for RenderAssetUsages

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T, U> AsBindGroupShaderType<U> for T
where U: ShaderType, &'a T: for<'a> Into<U>,

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fn as_bind_group_shader_type(&self, _images: &RenderAssets<GpuImage>) -> U

Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
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impl<T> Borrow<T> for T
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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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fn downcast(&self) -> &T

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impl<T> Downcast for T
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Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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Feeds this value into the given Hasher.
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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Creates Self using data from the given World.
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