# Backends in maplibre::render::settings - Rust
Represents the backends that wgpu will use.

# Struct maplibre::render::settings::Backends

    #[repr(transparent)]pub struct Backends(pub(crate) <Backends as PublicFlags>::Internal);

Expand description

Represents the backends that wgpu will use.

## Tuple Fields§

§ `0: <Backends as PublicFlags>::Internal`

## Implementations§

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### impl Backends

#### pub const VULKAN: Backends = _

Supported on Windows, Linux/Android, and macOS/iOS via Vulkan Portability (with the Vulkan feature enabled)

#### pub const GL: Backends = _

Supported on Linux/Android, the web through webassembly via WebGL, and Windows and macOS/iOS via ANGLE

#### pub const METAL: Backends = _

Supported on macOS/iOS

#### pub const DX12: Backends = _

Supported on Windows 10

#### pub const DX11: Backends = _

Supported on Windows 7+

#### pub const BROWSER_WEBGPU: Backends = _

Supported when targeting the web through webassembly

#### pub const PRIMARY: Backends = _

All the apis that wgpu offers first tier of support for.

Vulkan + Metal + DX12 + Browser WebGPU

#### pub const SECONDARY: Backends = _

All the apis that wgpu offers second tier of support for. These may be unsupported/still experimental.

OpenGL + DX11

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### impl Backends

#### pub const fn empty() -> Backends

Get a flags value with all bits unset.

#### pub const fn all() -> Backends

Get a flags value with all known bits set.

#### pub const fn bits(&self) -> u32

Get the underlying bits value.

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

#### pub const fn from_bits(bits: u32) -> Option<Backends>

Convert from a bits value.

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

#### pub const fn from_bits_truncate(bits: u32) -> Backends

Convert from a bits value, unsetting any unknown bits.

#### pub const fn from_bits_retain(bits: u32) -> Backends

Convert from a bits value exactly.

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

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.

#### pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

#### pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

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

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

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

#### pub fn insert(&mut self, other: Backends)

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

#### pub fn remove(&mut self, other: Backends)

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.

#### pub fn toggle(&mut self, other: Backends)

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

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

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

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

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

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

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

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

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.

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

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

#### pub const fn complement(self) -> Backends

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

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### impl Backends

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

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.

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

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.

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### impl Backends

#### pub fn contains_invalid_bits(&self) -> bool

Returns true if the bitflags contains bits that are not part of the bitflags definition.

## Trait Implementations§

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### impl Binary for Backends

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

Formats the value using the given formatter.
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### impl BitAnd for Backends

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#### fn bitand(self, other: Backends) -> Backends

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

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#### type Output = Backends

The resulting type after applying the `&` operator.
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### impl BitAndAssign for Backends

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#### fn bitand_assign(&mut self, other: Backends)

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

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### impl BitOr for Backends

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#### fn bitor(self, other: Backends) -> Backends

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

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#### type Output = Backends

The resulting type after applying the `|` operator.
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### impl BitOrAssign for Backends

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#### fn bitor_assign(&mut self, other: Backends)

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

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### impl BitXor for Backends

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#### fn bitxor(self, other: Backends) -> Backends

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

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#### type Output = Backends

The resulting type after applying the `^` operator.
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### impl BitXorAssign for Backends

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#### fn bitxor_assign(&mut self, other: Backends)

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

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### impl Clone for Backends

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#### fn clone(&self) -> Backends

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 Backends

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

Formats the value using the given formatter. Read more
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### impl Extend<Backends> for Backends

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

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 Backends

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

The set of defined flags.
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#### type Bits = u32

The underlying bits type.
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#### fn bits(&self) -> u32

Get the underlying bits value. Read more
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#### fn from_bits_retain(bits: u32) -> Backends

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 From<Backend> for Backends

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#### fn from(backend: Backend) -> Backends

Converts to this type from the input type.
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### impl FromIterator<Backends> for Backends

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#### fn from_iter<T>(iterator: T) -> Backends
where T: IntoIterator<Item = Backends>,

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

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### impl Hash for Backends

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

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 Backends

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#### type Item = Backends

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

Which kind of iterator are we turning this into?
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#### fn into_iter(self) -> <Backends as IntoIterator>::IntoIter

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

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

Formats the value using the given formatter.
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### impl Not for Backends

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#### fn not(self) -> Backends

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

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#### type Output = Backends

The resulting type after applying the `!` operator.
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### impl Octal for Backends

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

Formats the value using the given formatter.
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### impl PartialEq for Backends

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#### fn eq(&self, other: &Backends) -> 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 Sub for Backends

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#### fn sub(self, other: Backends) -> Backends

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 = Backends

The resulting type after applying the `-` operator.
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### impl SubAssign for Backends

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#### fn sub_assign(&mut self, other: Backends)

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 UpperHex for Backends

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

Formats the value using the given formatter.
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### impl Copy for Backends

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### impl Eq for Backends

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### impl StructuralEq for Backends

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### impl StructuralPartialEq for Backends

## Auto Trait Implementations§

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### impl RefUnwindSafe for Backends

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### impl Send for Backends

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### impl Sync for Backends

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### impl Unpin for Backends

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### impl UnwindSafe for Backends

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Gets the `TypeId` of `self`. Read more
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Immutably borrows from an owned value. Read more
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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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Checks if this value is equivalent to the given key. Read more
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Compare self to `key` and return `true` if they are equal.
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Instruments this type with the provided [`Span`], returning an `Instrumented` wrapper. Read more
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