Struct Backends 

pub struct Backends(/* private fields */);

Represents the backends that wgpu will use.

Implementations

impl Backends

pub const NOOP: Self

Backend::Noop.

pub const VULKAN: Self

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

pub const GL: Self

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

pub const METAL: Self

Backend::Metal. Supported on macOS and iOS.

pub const DX12: Self

Backend::Dx12. Supported on Windows 10 and later

pub const BROWSER_WEBGPU: Self

Backend::BrowserWebGpu. Supported when targeting the web through WebAssembly with the webgpu feature enabled.

The WebGPU backend is special in several ways: It is not not implemented by wgpu_core and instead by the higher level wgpu crate. Whether WebGPU is targeted is decided upon the creation of the wgpu::Instance, not upon adapter creation. See wgpu::Instance::new.

pub const PRIMARY: Self

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

• Backends::VULKAN
• Backends::METAL
• Backends::DX12
• Backends::BROWSER_WEBGPU

pub const SECONDARY: Self

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

• Backends::GL

impl Backends

pub const fn empty() -> Self

Get a flags value with all bits unset.

pub const fn all() -> Self

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<Self>

Convert from a bits value.

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

pub const fn from_bits_truncate(bits: u32) -> Self

Convert from a bits value, unsetting any unknown bits.

pub const fn from_bits_retain(bits: u32) -> Self

Convert from a bits value exactly.

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.

pub const fn is_empty(&self) -> bool

Whether all bits in self 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: Self) -> bool

Whether any set bits in other are also set in self.

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

Whether all set bits in other are also set in self.

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

The bitwise or (|) of the bits in self and other.

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

The intersection of self with the complement of other (&!).

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: Self)

The bitwise exclusive-or (^) of the bits in self and other.

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

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

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

The bitwise and (&) of the bits in self and other.

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

The bitwise or (|) of the bits in self and other.

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

The intersection of self with the complement of other (&!).

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: Self) -> Self

The bitwise exclusive-or (^) of the bits in self and other.

pub const fn complement(self) -> Self

The bitwise negation (!) of the bits in self, truncating the result.

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.

impl Backends

pub fn from_env() -> Option<Self>

Gets a set of backends from the environment variable WGPU_BACKEND.

See Self::from_comma_list() for the format of the string.

pub fn with_env(&self) -> Self

Takes the given options, modifies them based on the WGPU_BACKEND environment variable, and returns the result.

pub fn from_comma_list(string: &str) -> Self

Generates a set of backends from a comma separated list of case-insensitive backend names.

Whitespace is stripped, so both ‘gl, dx12’ and ‘gl,dx12’ are valid.

Always returns WEBGPU on wasm over webgpu.

Names:

• vulkan = “vulkan” or “vk”
• dx12 = “dx12” or “d3d12”
• metal = “metal” or “mtl”
• gles = “opengl” or “gles” or “gl”
• webgpu = “webgpu”

Trait Implementations

impl Binary for Backends

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

Formats the value using the given formatter.

impl BitAnd for Backends

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

The bitwise and (&) of the bits in self and other.

type Output = Backends

The resulting type after applying the & operator.

impl BitAndAssign for Backends

fn bitand_assign(&mut self, other: Self)

The bitwise and (&) of the bits in self and other.

impl BitOr for Backends

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

The bitwise or (|) of the bits in self and other.

type Output = Backends

The resulting type after applying the | operator.

impl BitOrAssign for Backends

fn bitor_assign(&mut self, other: Self)

The bitwise or (|) of the bits in self and other.

impl BitXor for Backends

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

The bitwise exclusive-or (^) of the bits in self and other.

type Output = Backends

The resulting type after applying the ^ operator.

impl BitXorAssign for Backends

fn bitxor_assign(&mut self, other: Self)

The bitwise exclusive-or (^) of the bits in self and other.

impl Clone for Backends

fn clone(&self) -> Backends

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Backends

impl Debug for Backends

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

Formats the value using the given formatter.

impl Default for Backends

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Backends

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Backends

impl Extend<Backends> for Backends

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

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

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

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.

impl Flags for Backends

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

The set of defined flags.

type Bits = u32

The underlying bits type.

fn bits(&self) -> u32

Get the underlying bits value.

fn from_bits_retain(bits: u32) -> Backends

Convert from a bits value exactly.

fn all_named() -> Backends

Get a flags value with all bits from named flags set.

fn empty() -> Self

Get a flags value with all bits unset.

fn all() -> Self

Get a flags value with all known bits set.

fn known_bits(&self) -> Self::Bits

Get the known bits from a flags value.

fn unknown_bits(&self) -> Self::Bits

Get the unknown bits from a flags value.

fn contains_unknown_bits(&self) -> bool

This method will return true if any unknown bits are set.

fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value.

fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.

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

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

fn iter(&self) -> Iter<Self>

Yield a set of contained flags values.

fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values.

fn iter_defined_names() -> IterDefinedNames<Self>

Yield a set of all named flags defined by Self::FLAGS.

fn iter_equal_names(&self) -> IterEqualNames<Self>

Get an iterator over all defined names for this flags value.

fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

where Self: Sized,

Whether any set bits in other are also set in self.

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

where Self: Sized,

Whether all set bits in other are also set in self.

fn truncate(&mut self)

where Self: Sized,

Remove any unknown bits from the flags.

fn insert(&mut self, other: Self)

where Self: Sized,

The bitwise or (|) of the bits in self and other.

fn remove(&mut self, other: Self)

where Self: Sized,

The intersection of self with the complement of other (&!).

fn toggle(&mut self, other: Self)

where Self: Sized,

The bitwise exclusive-or (^) of the bits in self and other.

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.

fn clear(&mut self)

where Self: Sized,

Unsets all bits in the flags.

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

The bitwise and (&) of the bits in self and other.

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

The bitwise or (|) of the bits in self and other.

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

The intersection of self with the complement of other (&!).

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

The bitwise exclusive-or (^) of the bits in self and other.

fn complement(self) -> Self

The bitwise negation (!) of the bits in self, truncating the result.

impl From<Backend> for Backends

fn from(backend: Backend) -> Self

Converts to this type from the input type.

impl FromIterator<Backends> for Backends

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

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

impl Hash for Backends

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 IntoIterator for Backends

type Item = Backends

The type of the elements being iterated over.

type IntoIter = Iter<Backends>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl LowerHex for Backends

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

Formats the value using the given formatter.

impl Not for Backends

fn not(self) -> Self

The bitwise negation (!) of the bits in self, truncating the result.

type Output = Backends

The resulting type after applying the ! operator.

impl Octal for Backends

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

Formats the value using the given formatter.

impl PartialEq for Backends

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

type Primitive = u32

The type of the underlying storage.

type Internal = InternalBitFlags

The type of the internal field on the generated flags type.

impl Serialize for Backends

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Backends

impl Sub for Backends

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

The intersection of self with the complement of other (&!).

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

type Output = Backends

The resulting type after applying the - operator.

impl SubAssign for Backends

fn sub_assign(&mut self, other: Self)

The intersection of self with the complement of other (&!).

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

impl UpperHex for Backends

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

Formats the value using the given formatter.