Struct wgpu::DownlevelFlags

pub struct DownlevelFlags { /* fields omitted */ }

Binary flags listing features that may or may not be present on downlevel adapters.

A downlevel adapter is a GPU adapter that WGPU supports, but with potentially limited features, due to the lack of hardware feature support.

Flags that are not present for a downlevel adapter or device usually indicates non-compliance with the WebGPU specification, but not always.

You can check whether a set of flags is compliant through the DownlevelCapabilities::is_webgpu_compliant() function.

Implementations

impl DownlevelFlags

pub const fn compliant() -> DownlevelFlags

All flags that indicate if the backend is WebGPU compliant

impl DownlevelFlags

pub const COMPUTE_SHADERS: DownlevelFlags

The device supports compiling and using compute shaders.

pub const FRAGMENT_WRITABLE_STORAGE: DownlevelFlags

Supports binding storage buffers and textures to fragment shaders.

pub const INDIRECT_EXECUTION: DownlevelFlags

Supports indirect drawing and dispatching.

pub const BASE_VERTEX: DownlevelFlags

Supports non-zero base_vertex parameter to indexed draw calls.

pub const READ_ONLY_DEPTH_STENCIL: DownlevelFlags

Supports reading from a depth/stencil buffer while using as a read-only depth/stencil attachment.

pub const DEVICE_LOCAL_IMAGE_COPIES: DownlevelFlags

Supports:

• copy_image_to_image
• copy_buffer_to_image and copy_image_to_buffer with a buffer without a MAP_* usage

pub const NON_POWER_OF_TWO_MIPMAPPED_TEXTURES: DownlevelFlags

Supports textures with mipmaps which have a non power of two size.

pub const CUBE_ARRAY_TEXTURES: DownlevelFlags

Supports textures that are cube arrays.

pub const COMPARISON_SAMPLERS: DownlevelFlags

Supports comparison samplers.

pub const INDEPENDENT_BLENDING: DownlevelFlags

Supports different blending modes per color target.

pub const VERTEX_STORAGE: DownlevelFlags

Supports storage buffers in vertex shaders.

pub const ANISOTROPIC_FILTERING: DownlevelFlags

Supports samplers with anisotropic filtering. Note this isn’t actually required by WebGPU, the implementation is allowed to completely ignore aniso clamp. This flag is here for native backends so they can comunicate to the user of aniso is enabled.

pub const FRAGMENT_STORAGE: DownlevelFlags

Supports storage buffers in fragment shaders.

pub const fn empty() -> DownlevelFlags

Returns an empty set of flags.

pub const fn all() -> DownlevelFlags

Returns the set containing all flags.

pub const fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

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

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

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

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> DownlevelFlags

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

Safety

The caller of the bitflags! macro can chose to allow or disallow extra bits for their bitflags type.

The caller of from_bits_unchecked() has to ensure that all bits correspond to a defined flag or that extra bits are valid for this bitflags type.

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

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

Returns true if there are flags common to both self and other.

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

Returns true if all of the flags in other are contained within self.

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

Inserts the specified flags in-place.

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

Removes the specified flags in-place.

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

Toggles the specified flags in-place.

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

Inserts or removes the specified flags depending on the passed value.

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

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

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

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both (see Self::symmetric_difference if that is undesirable).

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

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

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

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

Returns the symmetric difference between the flags in self and other.

Specifically, the returned set contains the flags present which are present in self or other, but that are not present in both. Equivalently, it contains the flags present in exactly one of the sets self and other.

This is equivalent to using the ^ operator (e.g. ops::BitXor), as in flags ^ other.

pub const fn complement(self) -> DownlevelFlags

Returns the complement of this set of flags.

Specifically, the returned set contains all the flags which are not set in self, but which are allowed for this type.

Alternatively, it can be thought of as the set difference between Self::all() and self (e.g. Self::all() - self)

This is equivalent to using the ! operator (e.g. ops::Not), as in !flags.

Trait Implementations

impl Binary for DownlevelFlags

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

Formats the value using the given formatter.

impl BitAnd<DownlevelFlags> for DownlevelFlags

pub fn bitand(self, other: DownlevelFlags) -> DownlevelFlags

Returns the intersection between the two sets of flags.

type Output = DownlevelFlags

The resulting type after applying the & operator.

impl BitAndAssign<DownlevelFlags> for DownlevelFlags

pub fn bitand_assign(&mut self, other: DownlevelFlags)

Disables all flags disabled in the set.

impl BitOr<DownlevelFlags> for DownlevelFlags

pub fn bitor(self, other: DownlevelFlags) -> DownlevelFlags

Returns the union of the two sets of flags.

type Output = DownlevelFlags

The resulting type after applying the | operator.

impl BitOrAssign<DownlevelFlags> for DownlevelFlags

pub fn bitor_assign(&mut self, other: DownlevelFlags)

Adds the set of flags.

impl BitXor<DownlevelFlags> for DownlevelFlags

pub fn bitxor(self, other: DownlevelFlags) -> DownlevelFlags

Returns the left flags, but with all the right flags toggled.

type Output = DownlevelFlags

The resulting type after applying the ^ operator.

impl BitXorAssign<DownlevelFlags> for DownlevelFlags

pub fn bitxor_assign(&mut self, other: DownlevelFlags)

Toggles the set of flags.

impl Clone for DownlevelFlags

pub fn clone(&self) -> DownlevelFlags

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DownlevelFlags

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

Formats the value using the given formatter.

impl Extend<DownlevelFlags> for DownlevelFlags

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

Extends a collection with the contents of an iterator.

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 FromIterator<DownlevelFlags> for DownlevelFlags

pub fn from_iter<T>(iterator: T) -> DownlevelFlags where
    T: IntoIterator<Item = DownlevelFlags>, 

Creates a value from an iterator.

impl Hash for DownlevelFlags

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl LowerHex for DownlevelFlags

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

Formats the value using the given formatter.

impl Not for DownlevelFlags

pub fn not(self) -> DownlevelFlags

Returns the complement of this set of flags.

type Output = DownlevelFlags

The resulting type after applying the ! operator.

impl Octal for DownlevelFlags

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

Formats the value using the given formatter.

impl Ord for DownlevelFlags

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<DownlevelFlags> for DownlevelFlags

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<DownlevelFlags> for DownlevelFlags

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Sub<DownlevelFlags> for DownlevelFlags

pub fn sub(self, other: DownlevelFlags) -> DownlevelFlags

Returns the set difference of the two sets of flags.

type Output = DownlevelFlags

The resulting type after applying the - operator.

impl SubAssign<DownlevelFlags> for DownlevelFlags

pub fn sub_assign(&mut self, other: DownlevelFlags)

Disables all flags enabled in the set.

impl UpperHex for DownlevelFlags

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

Formats the value using the given formatter.

impl Copy for DownlevelFlags

impl Eq for DownlevelFlags

impl StructuralEq for DownlevelFlags

impl StructuralPartialEq for DownlevelFlags